Copyright: ©1994 Digital Equipment Corporation
Citation: ©1994 Digital Equipment Corporation


Expanding Your Server

Introduction - Expanding Your Server

Tools Needed

Before You Begin

Unlocking  and Removing Side Panel

Removing Security Door

FRU List (Part Numbers)

Server Components

Expansion Brackets

Expansion Slots

Main Logic Board

Mass Storage Devices

SCSI Controller

Connecting Diskette and IDE Devices

Connecting SCSI Devices

Connecting an External SCSI Bus

Installing Additional Secondary Cache Memory (i486 CPU Modules)

Upgrade Sockets and Jumper Locations

Installing Additional Server Memory

Memory Configurations

Installing Expansion Boards

Installing SIMMs

Removing the 3½-Inch Diskette Drive

Removing a 3½-Inch Mass Storage Device (Internal Drive Bay)

Removing a 5¼-Inch Device (Front Access Drive Bay)

Removing CPU Chip

Removing CPU Module

Removing Expansion Boards

Removing Fan Pipe

Removing Fan/Speaker Assembly

Removing Main Logic Board

Removing Power Supply

Removing SIMMs

Replace Server Battery/Real Time Clock (RTC)

Upgrading the CPU

Upgrading the CPU Module


Introduction - Expanding Your Server

The following information will help you install, replace, or modify the following hardware:

•	CPU module

•	Main logic board options:

Memory

Real-time clock (RTC) (server battery)

Video memory

•	Optional EISA and PCI local bus expansion boards

•	Mass storage devices


Tools Needed

The following tools are recommended:

•	A Phillips screwdriver

•	An antistatic wrist strap (recommended, but not required)

	WARNING See also Static Electricity


Before You Begin

Before removing the side panel, do the following:

1.	Turn off power to all external devices connected to server.

2.	Turn server off.

3.	Unplug power cord from wall outlet.

4.	Disconnect power cord and monitor cord from server.

	WARNING See also Static Electricity


Unlocking and Removing Side Panel

	WARNING You might injure yourself or damage your server if you attempt to remove the side panel before unplugging ac and monitor power cords.
1.	Unlock side panel.

Insert the key into the keylock at lock position number 2.  To open the security door, turn the key clockwise to lock position number 1.  To open the side panel, continue to turn the key clockwise to the unlock position.

2.	Slide panel to rear of server.


Removing the Security Door

To remove the security door:

1.	Unlock the security door and swing it open.

2.	Lightly push the hinged side of the door upward to release the hinge pin from the lower socket.

3.	 Pull the door forward and down to detach it from the front panel.


Server Components

Click the Legend icon to see information about specific portions of the illustration.

  LEGEND


Legend - Server Components

A	Power supply

B	5 EISA and 2 PCI 32-bit local bus expansion slots or
4 EISA and 3 PCI 32-bit local bus expansion slots

C	CPU module

D	Main logic board

E	3½-inch diskette drive (or internal device in place of)

F	Front access 5¼-inch half-height drive bays

G	Internal 3½-inch drive bays


Expansion Brackets

You can install 3½-inch, 1-inch high or half-height devices in any of the internal drive bay slots.  If you plan on installing a 3½-inch device in a 5¼-inch drive bay slot, you must first install expansion brackets onto the device.  Expansion brackets will either be supplied with the device or can be purchased from Digital.


Expansion Slots

Click the Legend icon to see specific information about the expansion slots..

 LEGEND

Your PRIORIS XL Server contains eight slots for installing up to seven EISA or PCI expansion boards.  Five of the slots support industry-standard 32-bit EISA expansion boards.  The remaining three expansion slots support 32-bit PCI local bus expansion boards.

NOTE
When installing expansion boards, always read the accompanying documentation for server memory address and IRQ requirements.  Compare that information to the server memory and IRQ requirements in the appropriate CPU module specifications booklet.  If conflicts are detected, you must configure the expansion board to alternate settings.

Only one expansion board can reside in slot J4 and J13 at any one time. These slots have to share the expansion slot opening at the rear panel.


Legend - Expansion Slots

J5 through J8	EISA	Supports industry-standard 32-bit EISA expansion boards
J4	EISA	Supports industry-standard 32-bit EISA expansion boards Designated as a shared slot with PCI slot J13  (see NOTE)
J11/PCI slot 1	PCI	Supports bus mastering 32-bit PCI expansion boards
J12/PCI slot 2	PCI	Supports bus mastering 32-bit PCI expansion boards
J13/PCI slot 3	PCI	Supports bus mastering 32-bit PCI expansion boards Designated as a shared slot with EISA slot J4  (see NOTE)


Mass Storage Devices

Your server has two drive bay areas.  Mass storage devices such as hard disk drives, floppy diskette drives, CD-ROM drives and tape backup systems are installed in these drive bay areas.  The two drive bay areas are:

•	Front access drive bay area

This area has room for one 3½-inch diskette drive (standard on all PRIORIS XL Servers), two 5¼-inch half-height devices, or one 5¼-inch full-height device.  The 5¼-inch drive bays are equipped with removable panels to accommodate devices requiring front panel access.

•	Internal drive bay area

This area has room for six 3½-inch, 1-inch high devices or four 3½-inch half-height devices.

NOTE
Refer to the manufacturer's instructions for your mass storage device to determine if switches, jumper settings, or terminating resistors need to be set or installed on the device.  Set all applicable switches and jumpers, or remove terminating resistors prior to installing any mass storage device.

See also:	Server Components
SCSI Controller


Main Logic Board

Click the Legend icon to see information about specific portions of the illustration.

 LEGEND


Legend - Main Logic Board

A	5 V dc power supply connection

B	Diskette drive connection

C	Mouse and keyboard connections

D	Serial port connections

E	Parallel port and video connections

F	4 EISA expansion slots

G	Flash BIOS

H	Dedicated CPU module connector

I	Real-time clock/server battery

J	Eight 36-bit SIMM sockets

K	IDE drive connector

L	68-pin internal SCSI bus connector

M	50-pin internal SCSI bus connector

N	3.3 V dc power connector

O	2 PCI expansion slots

P	1 EISA and 1 PCI expansion slot (only one slot used at any one time)

Q	VGA feature connector (output only)

R	Video memory upgrade socket


SCSI Controller

Your PRIORIS  XL Server includes an onboard Adaptec AIC-7870 SCSI controller.  The AIC-7870 connects directly to the PCI local bus and supports up to seven SCSI devices installed within the server enclosure.  Additional SCSI devices can be added to your server by using an EISA- or PCI-based SCSI controller installed in an available expansion slot in conjunction with an external SCSI expansion box.

The onboard SCSI controller also supports either industry-standard 8-bit, narrow, 50-pin or 16-bit, wide, 68-pin SCSI devices.  Separate SCSI interface connectors are provided on the main logic board to connect either type of SCSI interface cable.  In most cases your server has been supplied with a standard 50-pin SCSI ribbon cable installed at the factory.  The following SCSI cables are available:

•	68-pin wide internal SCSI ribbon cable
(part number FR-PCXAR-WA).

•	Wide-to-narrow cable adapter for internal wide SCSI ribbon cable
(part number FR-PCXAR-WB).

•	Narrow internal channel - adding a narrow external channel
(part number FR-PCXAR-WC).

•	Narrow internal channel - adding a wide external channel
(part number FR-PCXAR-WD).

•	Wide internal channel - adding a narrow external channel
(part number FR-PCXAR-WE).

See also:	SCSI Configuration Guidelines
External SCSI Bus Guidelines
Connecting SCSI Devices
Connecting an External SCSI Bus


SCSI Configuration Guidelines

Your server configuration, SCSI controller, and all SCSI devices must work together for optimum performance.  Use the following guidelines to configure your server and all SCSI devices.

•	Each SCSI device (including the SCSI host adapter) must be configured with a unique ID number. SCSI host adapters usually default to ID 7.  Use SCSI ID 0 through 6  (narrow devices) and 0 through 15 (wide devices) for the remaining SCSI devices.  Hard disk drives should be configured to start with SCSI ID 0 and the lower ID numbers.

•	Both ends of the SCSI chain must be properly terminated.  Your sever comes with the main logic board SCSI terminators enabled.  This properly terminates the SCSI controller (the first device in the SCSI chain).  The supplied SCSI ribbon cable is equipped with an active SCSI terminator installed at the end of the cable.  Use only the SCSI cable supplied with your server.

•	SCSI device drivers are required to operate your SCSI devices.

•	You can add 50-pin SCSI devices to a server equipped with a 68-pin wide SCSI ribbon cable.  This cable is supplied with three 68-pin to 50-pin SCSI interface converter cables to allow adding SCSI devices such as tape drives and CD-ROM systems that are not presently offered with 68-pin SCSI interfaces.  Contact your Digital sales representative if additional SCSI converter cables are required.

NOTE
68-pin wide SCSI devices cannot be added to a SCSI cable connected to the main logic boards 50-pin narrow SCSI interface connector.

•	SCSI hard disk drives are low-level formatted at the factory.  Use the appropriate operating system command to high-level format any hard disk drive.

•	If your server boots from a disk drive other than SCSI, make sure all SCSI device drivers are installed on that disk drive.  SCSI devices can be used with an IDE drive only if the IDE drive is configured as drive C.

•	Make sure the proper SCU setup options are set for SCSI operation.

See also:	CD-ROM Startup Diskette and CD-ROM
Configuring Your Server
External SCSI Bus Guidelines

Also refer to the supplied Adaptec 7800 Family Manager Set Users Guide for additional information on configuring SCSI devices.


External SCSI Bus Guidelines

•	Make sure that the SCSI addresses you select for the external SCSI devices do not conflict with other devices in the server.

•	Make sure that the external SCSI bus is terminated properly.

•	For proper operation, the length of the SCSI cable must not exceed
1 meter (3.28 ft).

•	Use only a high-density external connector.


Connecting Diskette and IDE Devices

Click the Legend icon to see detailed information about specific portions of the illustration.  Note that the length of the IDE cable requires IDE drives to be placed in drive bay slots 1 and 2 in order for the cable to reach the drive connector.

To connect diskette and IDE devices, perform the following:

	CAUTION Do not install a 5.25-inch floppy drive in the top drive bay.  EMI shielding may cause electrical shorts to the etch on the disk.
  LEGEND

1.	Connect supplied ribbon cable to appropriate device as shown.

2.	Connect appropriate power cable to device.

3.	Replace and lock side panel.

4.	Connect external devices and restore power.

5.	Run SCU  to configure server.


NOTE

Make sure cable is connected with correct orientation.  Most cables and sockets are keyed so you cannot connect them backwards.  If your cable or device is not keyed, you must connect pin 1 of cable to pin 1 of device's socket.

Pin 1 of cable is on edge with colored stripe.  Pin 1 of device's socket should be marked with an arrow at one end of socket.  If necessary, refer to the device's documentation for pin 1 orientation.


Legend - Diskette/IDE Connections

A	Power supply
B	Power connections
C	Diskette drive connection
D	IDE drive connection
E	Diskette drive
F	Hard disk drive
G	Optional storage devices


Connecting SCSI Devices

Click the Legend icon to see detailed information about specific portions of the illustration.

  LEGEND

To connect SCSI devices, perform the following:

1.	Connect supplied ribbon cable to appropriate device as shown.

2.	Connect appropriate power cable to device.

3.	Replace and lock side panel.

4.	Connect external devices and restore power.

5.	Run SCU  to configure server.

See also:	SCSI Configuration Guidelines
External SCSI Bus Guidelines
Connecting an External SCSI Bus


Legend - SCSI Connections

A	Power supply
B	Power connections
C	SCSI cable
D	SCSI controller connector
E	SCSI hard disk drive
F	CD-ROM drive (or other SCSI device)
G	Single-ended active terminator


Connecting an External SCSI Bus

You can use the wide (68-pin) or narrow (50-pin) SCSI connector on your main logic board to connect external SCSI devices to your server.

NOTE
The External Onboard SCSI field in the BIOS Setup must be set to Enabled.

To connect an external SCSI bus, follow these instructions:

1.	Connect the 68-pin or 50-pin cable connector to the corresponding connector on the main logic board.

2.	Decide which SCSI knockout you need.  The top SCSI knockout is for a narrow 50-pin connector.  The bottom SCSI knockout is for a wide 68-pin connector.

Using a screwdriver, gently pry away one of the external SCSI knockouts located at the rear of the server.

3.	Screw the external SCSI connector to the rear panel with the screws provided.

4.	Connect the external device making sure the SCSI bus is properly terminated.

5.	If you are using a wide external SCSI connector, set the wide SCSI jumper (J22) on the main logic board to Enabled.

6.	Run the SCU and any other SCSI utilities to configure your server.

See also:	SCSI Configuration Guidelines
External SCSI Bus Guidelines
Connecting SCSI Devices
Configuring Your Server


Installing Additional Secondary Cache Memory
(i486 CPU Modules)

Your CPU module is equipped with 128 KB direct-mapped adaptive write-back secondary cache memory.  This secondary cache memory is designed to improve the performance of the installed CPU.

An additional 128 KB cache memory option is available to increase secondary cache memory to 256 KB.  This kit consists of four 32 KB × 8 SRAM chips installed in DIP sockets on the CPU module.

	CAUTION If your computer contains 64 MB or more of memory, you must install an additional 128 KB of secondary cache.  Failure to do so can cause server failure.
To install additional secondary cache memory:

1.	Remove the CPU module.

2.	Place the CPU module on an anti-static surface.

3.	Locate the secondary cache memory DIP sockets on the CPU module.

4.	Remove the secondary cache memory chips from their anti-static packaging, handling each chip only by their edges.

5.	Position each chip with the notched end facing to the right of the CPU module.

Insert each chip into the appropriate DIP socket.

	CAUTION Make sure each SRAM chip's pin 1 location is properly aligned with the pin 1 location on the socket (A, Figure 5-9).  Improper installation can cause faulty computer operation.
6.	Set all appropriate cache jumpers.

7.	Install and secure the CPU module to the main logic board.

See also:	Upgrade Sockets and Jumper Locations


Upgrade Sockets and Jumper Locations

  LEGEND

The location of the secondary cache memory upgrade sockets and jumper pins is shown at A.  The following table lists the factory default settings.

If necessary, refer to Device Mapping for i486 CPU module memory mapping information or to the supplied Pentium CPU Module booklet for Pentium CPU module memory mapping information.


i486 CPU Module Jumper Settings
Legend - i486 CPU Module Jumper Settings

Feature	Description	Setting
Cache size select   (default depends on the amount installed at the factory)	128 KB 256 KB	J8, pins 1 and 2 jumpered   J9, pins 1 and 2 jumpered J10, pins 1 and 2 jumpered   J8, pins 2 and 3 jumpered   J9, pins 2 and 3 jumpered J10, pins 2 and 3 jumpered
CPU clock input  (default depends on the CPU installed at the factory)	25 MHz 33 MHz	J12, pins 1 and 2 jumpered J12, pins 2 and 3 jumpered


Installing Additional Server Memory

Adding more memory allows your server to run larger, more complicated software and run it quicker.

The amount of memory your server supports depends on the type of CPU module you have installed.  If you have the i486 PCI Series CPU module installed, your server will support up to 128 MB using SIMM banks 0 through 3. If you have the Pentium 560/566 CPU module installed, your server will support up to 256 MB using SIMM banks 0 through 5.  The Pentium 590 CPU module will support up to 512 MB using SIMM banks 0 through 7.

	CAUTION If you plan on operating your server with 64 MB or more of memory and you have the i486 PCI Series CPU module installed, you must install an additional 128 KB of secondary cache.  Failure to do so can cause server failure.  Refer to your CPU Module Specifications booklet for additional information.
Your server comes with at least 8 MB of memory.  When adding additional memory make sure you:

•	Install 36-bit SIMMs having an access time of 70 ns or less.

•	Fill two sockets at a time using the same SIMM size, type and speed.  Supported SIMM sizes:  4 MB, 8 MB, 16 MB, and 32 MB.

•	Fill banks 0 and 1 before banks 2 and 3, banks 0 through 3 before banks 4 and 5, and banks 0 through 5 before banks 6 and 7.

See also:	Installing SIMMs
Memory Configurations


Memory Configurations

Banks 6 and 7 are for the 590 Pentium only.

0	1	2	3	4	5	6	7	Total
4 MB	4 MB	4 MB	4 MB					16 MB
8 MB	8 MB							16 MB
4 MB	4 MB	4 MB	4 MB	4 MB	4 MB			24 MB
4 MB	4 MB	8 MB	8 MB					24 MB
4 MB	4 MB	4 MB	4 MB	8 MB	8 MB			32 MB
8 MB	8 MB	8 MB	8 MB					32 MB
16 MB	16 MB							32 MB
4 MB	4 MB	8 MB	8 MB	8 MB	8 MB			40 MB
4 MB	4 MB	16 MB	16 MB					40 MB
8 MB	8 MB	8 MB	8 MB	8 MB	8 MB			48 MB
8 MB	8 MB	16 MB	16 MB					48 MB
4 MB	4 MB	4 MB	4 MB	16 MB	16 MB			48 MB
4 MB	4 MB	8 MB	8 MB	16 MB	16 MB			56 MB
8 MB	8 MB	8 MB	8 MB	16 MB	16 MB			64 MB
16 MB	16 MB	16 MB	16 MB					64 MB
32 MB	32 MB							64 MB
4 MB	4 MB	32 MB	32 MB					72 MB
4 MB	4 MB	16 MB	16 MB	16 MB	16 MB			72 MB
4 MB	4 MB	4 MB	4 MB	32 MB	32 MB			80 MB
8 MB	8 MB	16 MB	16 MB	16 MB	16 MB			80 MB
8 MB	8 MB	32 MB	32 MB					80 MB
4 MB	4 MB	8 MB	8 MB	32 MB	32 MB			88 MB
8 MB	8 MB	8 MB	8 MB	32 MB	32 MB			96 MB
16 MB	16 MB	16 MB	16 MB	16 MB	16 MB			96 MB
16 MB	16 MB	32 MB	32 MB					96 MB
4 MB	4 MB	16 MB	16 MB	32 MB	32 MB			104 MB
8 MB	8 MB	16 MB	16 MB	32 MB	32 MB			112 MB
32 MB	32 MB	32 MB	32 MB					128 MB
16 MB	16 MB	16 MB	16 MB	32 MB	32 MB			128 MB
64 MB	64 MB							128 MB
4 MB	4 MB	32 MB	32 MB	32 MB	32 MB			136 MB
4 MB	4 MB	64 MB	64 MB					136 MB
8 MB	8 MB	32 MB	32 MB	32 MB	32 MB			144 MB
8 MB	8 MB	64 MB	64 MB					144 MB
4 MB	4 MB	4 MB	4 MB	4 MB	4 MB	64 MB	64 MB	152 MB
16 MB	16 MB	32 MB	32 MB	32 MB	32 MB			160 MB
16 MB	16 MB	64 MB	64 MB					160 MB
8 MB	8 MB	8 MB	8 MB	8 MB	8 MB	64 MB	64 MB	176 MB
32 MB	32 MB	32 MB	32 MB	32 MB	32 MB			192 MB
32 MB	32 MB	64 MB	64 MB					192 MB
16 MB	16 MB	16 MB	16 MB	16 MB	16 MB	64 MB	64 MB	224 MB
32 MB	32 MB	32 MB	32 MB	32 MB	32 MB	32 MB	32 MB	256 MB
32 MB	32 MB	64 MB	64 MB	64 MB	64 MB			256 MB
4 MB	4 MB	4 MB	4 MB	64 MB	64 MB	64 MB	64 MB	272 MB
8 MB	8 MB	8 MB	8 MB	64 MB	64 MB	64 MB	64 MB	288 MB
32 MB	32 MB	32 MB	32 MB	32 MB	32 MB	64 MB	64 MB	320 MB
32 MB	32 MB	64 MB	64 MB	64 MB	64 MB	64 MB	64 MB	448 MB
64 MB	64 MB	64 MB	64 MB	64 MB	64 MB	64 MB	64 MB	512 MB


Installing Expansion Boards

NOTE
Read and fully understand your optional expansion board's documentation before installing it.

To install an EISA or PCI local bus expansion board:

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Unscrew and remove the metal filler plate  from selected expansion slot.

5.	Insert new expansion board into socket.

Push expansion board firmly into place.

6.	Secure expansion board to slot with screw removed in step 4.

7.	Replace and lock side panel.

8.	Connect external devices and restore power.

9.	Run SCU to configure server.


Metal Filler Plate


Installing SIMMs

	CAUTION Use care when installing SIMMs. The retaining clips on the sockets break easily if the SIMM is not seated correctly.
1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Install SIMM into socket at a 45 degree angle.

Make sure notch is oriented as shown.  Rock SIMM gently until it completely engages bottom of socket.  Tip SIMM upright until both retaining clips engage.

5.	Replace and lock side panel.

6.	Connect external devices and restore power.

7.	Run SCU to configure server for additional memory.

See also:	Configuring Your Server
Memory Configurations


Removing the 3½-Inch Diskette Drive

To remove the 3½-inch diskette drive:

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Disconnect power and ribbon cables.

See also:	Connecting Diskette and IDE Devices

5.	Remove two screws securing drive to chassis.

6.	Slide drive forward out of server.


Removing a 5¼-Inch Device (Front Access Drive Bay)

To remove a 5¼-inch device from one of the front access drive bays.

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Disconnect power and ribbon cables.

See also:	Connecting Diskette and IDE Devices

5.	Remove two screws securing device to chassis.

6.	Slide 5¼-inch device forward out of drive bay.


Removing a 3½-Inch Mass Storage Device (Internal Drive Bay)

To remove a 3½-inch mass storage device from the internal drive bay.

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Disconnect power and ribbon cables.

See also:	Connecting Diskette and IDE Devices
Connecting SCSI Devices

5.	Remove mounting screws.

6.	Pull drive from internal drive bay.

7.	Remove expansion brackets.


Removing CPU Chip
Removing a CPU Chip

NOTE
Earlier versions of the CPU module did not have a voltage regulator card
(66 MHz version) as shown or jumper card (60 MHz version).

	CAUTION Before installing a new CPU module, update your server BIOS.  Do not wait to update the BIOS until after installing a new CPU module.
To remove the CPU chip:

1.	Remove CPU module.

2.	Lift up on lever to release the CPU.

3.	Remove CPU, noting its pin 1 location.


pin 1


voltage regulator card


Removing CPU Module

	CAUTION Before installing a new CPU module, update your server BIOS.  Do not wait to update the BIOS until after installing a new CPU module.
1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Remove CPU module retaining bracket.

5.	Carefully remove CPU module from main logic board.


Removing Expansion Boards

To remove an expansion board:

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Remove screw from metal filler plate.

5.	Gently pull board outward.


Removing Fan Pipe

To remove the fan pipe:

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Unhook plastic fan pipe from lower fan assembly and remove.


Removing Upper Fan Assembly

To remove the upper fan assembly:

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Remove fan connection from main logic board.

See also:	Removing Main Logic Board

5.	Press in on retaining clips.

6.	Tilt assembly away from front panel and remove.


Removing Fan/Speaker Assembly

To remove the fan/speaker assembly:

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Remove fan and speaker connections from main logic board.

See also:	Removing Main Logic Board

5.	Press down on the two retaining clips.

6.	Tilt assembly away from front panel and remove.


Removing Main Logic Board

To remove the main logic board:

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Remove all connectors.

5.	Remove CPU module retaining bracket and CPU module.

5.	Remove all expansion boards.

6.	Remove upper fan, fan pipe, and fan/speaker assembly.

7.	Remove mounting screws.

8.	Carefully slide main logic board forward until external device connectors clear rear panel, then remove from server.


Removing Power Supply

To remove the power supply:

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Disconnect power cord.

5.	Pull off Power On/Off button from switch at front panel.

6.	Remove two screws securing On/Off switch to chassis.

7.	Remove four screws securing power supply to rear panel.

8.	Remove power supply from server.


Removing SIMMs

To remove SIMMs

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Press retaining clips out.

5.	Push SIMM down and pull out.


Removing Video Memory

To remove video memory:

1.	Turn off external devices and server.

2.	Disconnect external devices, ac power, and monitor power.

3.	Unlock and remove side panel.

4.	Carefully remove video memory DRAM chip.


Replace Server Battery/Real Time Clock (RTC)

To replace the server battery/real time clock:

1.	Record server configuration settings.

2.	Turn off external devices and server.

3.	Disconnect external devices, ac power, and monitor power.

4.	Unlock and remove side panel.

5.	Remove battery.

6.	Install new battery.

	CAUTION Make sure pin 1 on battery is correctly aligned with location on socket (see figure).  Incorrect installation can cause faulty server operation.
7.	Replace and lock side panel.

8.	Connect external devices and restore power.

9.	Run SCU to reconfigure server using recorded configuration settings from step 1.

See also:	Configuring Your Server


Upgrading the CPU Module

Illustrations

Removing CPU Module

Replacing CPU Module

Installing a higher-performance CPU module increases the capabilities of your server.  It also allows you to upgrade with future CPUs as technology becomes more advanced.  To upgrade your CPU module:

1.	If necessary, update your computer's BIOS.

Refer to your User's Guide and to the README files on any diskette that came with the new CPU module.

2.	Remove the CPU module's retaining bracket.

3.	Grasping both ends of the CPU module, carefully remove it from the main logic board.

4.	Place the CPU module in an anti-static package.

5.	Set any appropriate jumpers on the new CPU module.

Refer to the section titled "Upgrade Sockets and Jumper Locations" for i486 CPU module jumper locations or the the supplied Pentium CPU Module booklet for Pentium CPU module jumper locations.

6.	Install the new CPU module.

7.	Secure the CPU module to the main logic board using the previously removed retaining bracket.


{bmc DEC243_2.BMP}


{bmc DEC243_3.BMP}


Upgrading the CPU

Illustrations

Releasing CPU

Replacing CPU

Your CPU module is equipped with a Pentium OverDrive Ready ZIF socket.  The socket is capable of supporting faster i486 CPUs and OverDrive CPUs (including future 3.3 V dc CPU technology).  Contact your Digital sales representative for CPU availability and ordering information for your computer.

To install a higher performance CPU:

1.	Remove the CPU module.

2.	Place the CPU module on an anti-static surface.

3.	Lift up on the lever to release the CPU.

Remove the CPU noting its pin 1 location.

NOTE
If you are installing a faster i486 CPU, make sure you align it with the outside row of pins visible.

4.	Install the new CPU.

Make sure pin 1 on the CPU is aligned with pin 1 on the ZIF socket.  Pin 1 is located at the notched end of the CPU (A).

5.	Return the release lever to its original position.

6.	Set any appropriate jumpers.

Refer to Upgrade Sockets and Jumper Locations for i486 CPU module jumper locations or the the supplied Pentium CPU Module booklet for Pentium CPU module jumper locations.

7.	Install and secure the CPU module to the main logic board.


{bmc DEC175_2.BMP}


{bmc DEC175_3.BMP}


server battery/real time clock:
server battery/real time clock

Runs the server clock and retains any configuration information when it is turned off.


CPU module

If you plan on replacing your CPU module or upgrading your CPU module's CPU, refer to the appropriate CPU Specifications Booklet supplied with your server.


new screws

Do not use old screws.  They might be too long and, as a result, can damage your device's internal mechanisms.


SIMM

Single In-line Memory Module


static electricity

Static electricity collects on non-conductors such as paper, cloth, or plastic.  A static discharge can be damaging even though you cannot see or feel it.

To prevent damage to circuit boards and/or components:

•	Before touching any circuit board or component, touch the metal frame of your server to discharge any static electricity.

•	Keep circuit boards and components away from non-conductors.

•	Keep clothing away from circuit boards and components.

•	Keep circuit boards in anti-static bags.


FRU List (Part Numbers)

Part #	Description

12-41670-01	SCSI terminator
17-00606-02	Power cord
17-03460-05	Cable assembly (diskette drive)
17-03461-05	Cable assembly (IDE drive)
17-03779-01	Ext.cable
17-03961-01	Cable assembly (SCSI)
17-04001-01	Cable assembly (feature connector)
21-39151-01	Battery/real time clock
22-00908-03	QUPlus/FE
  -PC77M-AA	SIMM, 8MB
  -PC77M-AB	SIMM, 16MB
  -PC77M-AC	SIMM, 32MB
  -PC77M-AD	SIMM, 64MB
  -PC7XS-AA	2-button mouse
  -PC7XV-KA	14 monitor, monochrome
  -PCTAR-AA	raid control 1-CH
  -PCTAZ-CB	2740 SCSI adapter
  -PCTXH-IA	ext. cable
  -PCT7M-DA	512KB video RAM upgrade kit
  -PCXAL-NA	keyboard
  -PCXAG-AM	Diamond Viper PCI
  -PCXAR-AR	3.5/1 1GB fast SCSI
  -PCXAR-CL	HDD, 540 MB (IDE)
  -PCXAT-AF	4/8 GB RDAT tape
  -PCXAT-BC	500+ MB QIC
  -PCXAV-EC	17 monitor, color SVGA
  -PCXCV-GC	14 monitor, color VGA
  -PCXDF-AA	14.4K data/fax modem
  -RE24M-E	3.5 HDD, 340 MB IDE
  -RRD43-AA	CD-ROM dual speed, 5.25
  -RRD44-	CD-ROM high speed
  -RX23L-AA	3.5 FDD 1.44 MB
  -RX26 -AA	3.5" FDD, 2.88 MB
  -RX33L-	5.25 FDD 1.2 MB
  -RZ24M-E	3.5/1 HDD, 340 MB SCSI
  -RZ25L-	3.5 HDD, 535MB SCSI
  -RZ26L-	3.5/1 HDD, 1GB SCSI
  -RZ28-	3.5/1.6 HDD, 2GB SCSI
  -RZ28L-	3.5/1 HDD, 2GB SCSI
  -TZK11-AA	2/4 GB QIC
  -TZK12-AA	525MB QIC (SCO, DOS, OS/2)
30-42091-01	power supply, 300W
30-42097-01	enclosure w/cable & panel assembly
36-42163-01	Label, regulatory, made in Taiwan
36-42163-02	Label, regulatory, assembly in U.K.
36-42163-03	Label, regulatory, made in Canada
36-42163-04	Label, regulatory, assembly in Japan
36-42163-05	Label, regulatory, assembly in Australia
37-01499-01	package assembly
54-23456-01	module, LE Server PCI-EISA
54-23528-04	module, P5-60/66 MHz CPU card w/566 CPU chip WB cache
54-23528-05	module, P5-60/66 MHz CPU card w/o CPU chip
54-23528-06	module, P5-60/66 MHz CPU card w/560 CPU chip WB cache
54-23532-01	256 KB external cache for P5-90 MHz CPU, standard
54-23560-02	module, 466D2 CPU card w/466 CPU
54-23560-03	module, P24C card w/4100 CPU
54-23560-04	module, 433DX/466D2 CPU card w/128K cache, w/o CPU
70-31628-01	CPU chip P5/60 MHz, w/heatsink
70-31628-02	CPU chip P5/66 MHz, w/heatsink
70-31628-04	CPU chip P5/90 MHz, w/heatsink
74-48434-06	name plate, 590DP
74-48434-08	name plate, 466
74-48434-09	name plate, 4100
74-48434-10	name plate, 560
74-48434-11	name plate, 566
74-48434-12	name plate, 590
74-48747-01	door
74-49028-01	bracket, 3.5 drive
74-49029-01	bracket, 5.25 drive
FR-PC77M-AE	128 KB external cache for I486 CPU, optional
FR-PCXAR-AR	1GB HDD, wide SCSI
FR-PCXAR-AS	1GB HDD, wide SCSI
(w/68-pin cable & 3 wide-to-narrow cable adapters)
FR-PCXAR-WA	68-pin wide cable & 3 wide-to-narrow cable adapters
FR-PCXAR-WB	wide-to-narrow cable adapter
FR-PCXAR-WC	narrow internal channel - adding a narrow external channel
FR-PCXAR-WD	narrow internal channel - adding a wide external channel
FR-PCXAR-WE	wide internal channel - adding a narrow external channel
QC-01RAB-HC	software kit


Device Mapping

These Help topics list your server's device mapping.

CPU Memory Address Map (Full Range)

CPU Memory Address Map (PC Compatibility Range)

CPU I/O Address Map

I/O Address Map

Computer Interrupt Levels

DMA Channel Assignment

PCI Configure Space Address Map


CPU Memory Address Map (Full Range)

Range	Function	Notes
0 KB to 512 KB	main memory	PC compatibility range
512 KB to 1024 KB (1MB)	main memory	PC compatibility range EISA/ISA memory lower limit
1 MB to 16 MB	main memory	EISA/ISA memory upper limit
	memory space gap	PCI memory hole (16 MB max size)
16 MB to 128 MB	main memory	i486, DX2/66 upper limit
128 MB to 4 GB	PCI memory


CPU Memory Address Map (PC Compatibility Range)

Address Range	Function	Size
0000 to 7FFFF	Main memory	512 KB
80000 to 9FFFF	Main/PCI/ISA memory	128 KB
A0000 to BFFFF	PCI/ISA video buffer memory	128 KB
C0000 to C7FFF	Video memory BIOS	32 KB
C8000 to DFFFF	PCI/ISA card BIOS and buffer memory	96 KB
E0000 to EBFFF	ISA/PCI adapter RAM after POST Used by BIOS Setup during POST	64 KB (32 KB if SCSI BIOS enabled)
EC000 to EFFFF	SCSI BIOS (if enabled)	32 KB
F0000 to FFFFF	Planar BIOS memory	64 KB


CPU I/O Address Map

Range (hexadecimal)	Function
0000 to 0CF7	PCI I/O space
0CF8	Configuration space enable register
0CF9	Turbo and reset control register
0CFA to BFFF	PCI I/O space
C000 to CFFF	PCI configuration space
D000 to FFFF	PCI I/O space


I/O Address Map

Range (hexadecimal)	Function
060 to 064	Keyboard/mouse controller
0F0 to 0FF	Math co-processsor
1F0 to 1F7	IDE controller (if enabled)
278 to 27F	LPT2 (if enabled)
2F8 to 2FF	COM2 (if enabled)
378 to 37F	LPT1 (if enabled)
3BC to 3BE	LPT3 (if enabled)
3F0 to 3F7	Diskette controller (if enabled)
3F8 to 3FF	COM1 (if enabled)


Computer Interrupt Levels

Interrupt Number	Interrupt Source
IRQ1	Keyboard controller
IRQ3	COM2 (if enabled)
IRQ4	COM1 (if enabled)
IRQ6	Diskette drive (if enabled)
IRQ7	LPT1, LPT2, LPT3 (if enabled)
IRQ12	Mouse interrupt
IRQ13	Math co-processor
IRQ14	Hard disk drive (if enabled)


DMA Channel Assignment

Channel	Controller	Function
0	1	Refresh
1	1	Not used
2	1	Diskette controller (if enabled)
3	1	Not used
4	2	Cascade DMA
5	2	Not used
6	2	Not used
7	2	Not used


PCI Configure Space Address Map

Range (hexadecimal)	Function
C0xx	CPU bridge
C1xx	Onboard PCI SCSI (if applicable)
C2xx	EISA/ISA bridge
C6xx	PCI slot 1
C7xx	PCI slot 2
C8xx	PCI slot 3


Server Messages

The following topics list the PRIORIS XL server messages you might see or hear when you turn on power.  The computer messages are grouped as follows:

•	POST and Boot Messages

•	Beep Codes for Fatal Errors

•	Beep Codes for Nonfatal Errors


POST and Boot Messages

The POST displays messages to alert you to errors in hardware, software, and firmware or to provide operating information about your computer.

Each time the POST displays a message on your screen, the computer's speaker beeps twice.  If an error occurs before the monitor is initialized, specific beep codes sound to alert you to a problem.  The table below lists a general grouping of system messages arranged by the POST countdown number.  In addition, each message is accompanied by text describing the message and in most cases, a recommended solution to the problem.

NOTE
Italics indicate variable parts of a message such as memory addresses, hexadecimal values, and so on.  These messages can differ at each occurrence.

POST Countdown Number	Message Number	Message	Solution
240	0007	No timer tick	Replace main logic board.
200	0001	Shutdown failure	Replace main logic board.
190	0009	Timer 2 failure	Replace main logic board.
180	0010	Keyboard stuck key Keyboard controller Keyboard clock line Keyboard data line Keyboard failure	Check the keyboard connection.  If the connection is secure, the keyboard or keyboard controller might have failed.  replace keyboard.
170	0041	Mouse failure	Check the mouse connection.  If the problem persists, replace the mouse.
160		640 KB base memory    0 KB extended        memory
150	0017	Time-of-day clock stopped	Replace RTC.
100	0018	Invalid configuration information	Run the SCU.
090	0011	Diskette drive failure	Run the SCU.  Check all connections.  If the problem persists, replace the diskette drive.
080	0015	Hard disk controller failure	Run the SCU.  Check all connections.  If the problem persists, replace the controller.
080	0016	Hard disk 0 failure	Run the SCU.  Check all connections.  If the problem persists, replace the hard disk.
060	0021	xxxx0h optional ROM bad checksum = xx	Correct the address conflict. If the problem persists, replace the ROM chip.   .
050	0019	Time-of-day not set	Run SCU and set the time and date.
040	0020	Keyboard is locked	Unlock the keyboard.
020		Enable NMI
010		Enable cache
000		Boot


Beep Codes for Fatal Errors

If the POST finds an error and cannot display a message, the computer's speaker emits a series of beeps to indicate the error and places a value in I/O port 80h.

For example, a failure of bit 3 in the first 64 KB of RAM is indicated by a 2-1-4 beep code (a burst of two beeps, a single beep, and a burst of four beeps).

The table below lists the beep codes and the values the POST writes to I/O port 80h when it encounters a fatal error.  This table lists fatal errors that lock up the computer.  Nonfatal errors that do not lock up the computer are listed in a separate table.

See also:	Beep Codes for Nonfatal Errors

Beep Code	Error Message	Port 80h
1-1-3	CMOS write/read failure	02h
1-1-4	ROM checksum failure	03h
1-2-1	Interval timer failure	04h
1-2-2	DMA failure	05h
1-2-3	DMA page register write/read failure	06h
1-3-1	RAM refresh failure	08h
1-3-3	1st 64 KB RAM chip or data line failure	0Ah
1-3-4	1st 64 KB RAM odd/even logic failure	0Bh
1-4-1	1st 64 KB RAM address line failure	0Ch
1-4-2	1st 64 KB RAM parity failure	0Dh
2-1-1	Bit 0 1st 64 KB RAM failure	10h
2-1-2	Bit 1 1st 64 KB RAM failure	11h
2-1-3	Bit 2 1st 64 KB RAM failure	12h
2-1-4	Bit 3 1st 64 KB RAM failure	13h
2-2-1	Bit 4 1st 64 KB RAM failure	14h
2-2-2	Bit 5 1st 64 KB RAM failure	15h
2-2-3	Bit 6 1st 64 KB RAM failure	16h
2-2-4	Bit 7 1st 64 KB RAM failure	17h
2-3-1	Bit 8 1st 64 KB RAM failure	18h
2-3-2	Bit 9 1st 64 KB RAM failure	19h
2-3-3	Bit A 1st 64 KB RAM failure	1Ah
2-3-4	Bit B 1st 64 KB RAM failure	1Bh
2-4-1	Bit C 1st 64 KB RAM failure	1Ch
2-4-2	Bit D 1st 64 KB RAM failure	1Dh
2-4-3	Bit E 1st 64 KB RAM failure	1Eh
2-4-4	Bit F 1st 64 KB RAM failure	1Fh
3-1-1	Slave DMA register failure	20h
3-1-2	Master DMA register failure	21h
3-1-3	Master interrupt mask register failure	22h
3-1-4	Slave interrupt mask register failure	23h
3-2-1	No recovery diskette or disk error	24h
3-2-3	Boot block checksum failure	26h
3-2-4	Keyboard/mouse controller failure	27h
4-2-1	Timer tick interrupt failure	34h
4-2-2	Shutdown failure	35h
4-2-3	Gate A20 failure	36h
4-2-4	Unexpected interrupt in protected mode	37h
4-3-1	RAM failure (above 0FFFFh)	38h
4-3-3	Interval timer 2 failure	3Ah
4-3-4	Time-of-day clock failure	3Bh
4-4-1	Serial port failure	3Ch
4-4-2	Parallel port failure	3Dh
4-4-3	Math coprocessor failure	3Eh


Beep Codes for Nonfatal Errors

If the POST finds an error and cannot display a message, the computer's speaker emits a series of beeps to indicate the error and places a value in I/O port 80h.

For example, a failure of bit 3 in the first 64 KB of RAM is indicated by a 2-1-4 beep code (a burst of two beeps, a single beep, and a burst of four beeps).

The table below lists the beep codes and the values the POST writes to I/O port 80h when it encounters a nonfatal error.  This table lists nonfatal errors that do not lock up the computer. Fatal errors that lock up the computer are listed in a separate table.

See also:	Beep Codes for Fatal Errors

Beep Code	Error Message	Port 80h
1-4-4	Software NMI port test in progress	0Fh
3-3-4	Screen memory failure	2Bh
3-4-1	Screen initialization failure	2Ch
3-4-2	Screen retrace failure	2Dh


Technical Specifications

These topics provide information about the technical characteristics of the PRIORIS XL Server.

Server Specifications

External Computer Connectors

EISA Expansion Slots

PCI Local Bus Expansion Slots

Power Supply and Input Power

Nominal Current Requirements

Known Limitations

Main Logic Board Jumpers


Server Specifications

These topics provide information about the physical and technical specifications of the PRIORIS XL Server.

CPU Specifications

Server Performance Specifications

Server Dimensions

Server Environmental Specifications


CPU Specifications

CPU specifications vary depending on the type of CPU module installed in your computer.  Refer to the appropriate CPU Module Specifications booklet for further information.


Server Performance Specifications

Attributes	Specification
Bus clock    ISA    PCI	7.5/8.33 MHz 30/33 MHz
Data I/O    ISA    PCI	8-bit and 16-bit 32-bit
Main logic board DRAM	8 MB minimum up to 128 MB (i486 CPU module installed) up to 256 MB (560/566 Pentium CPU module installed)  up to 512 MB (590 Pentium CPU module installed)
ROM BIOS size	128 KB


Server Dimensions

Dimension	Specification
Width	190.5 mm (7.5 in)
Length	469.9 mm (18.5 in)
Height	487.6 mm (19.2 in)
Weight	18 kg (39.6 lb)


Server Environmental Specifications

Attributes	Specification
Operating temperature	10°C to 40°C (50°F to 104°F)
Storage temperature	−20°C to 65°C (−4°F to 149°F)
Operating humidity (noncondensing)	10% to 90% relative humidity,  maxium wet bulb 40°C  (104°F)
Storage humidity (noncondensing)	5% to 95% relative humidity,  maximum wet bulb 65°C  (149°F)
Altitude   Operating   Nonoperating	2,438 m (8,000 ft) maximum 4,876 m (16,000 ft) maximum
Shipping vibration	IAW Federal Standard 101, method 5019
Nonoperating shock	30 G, 25 ms halfsine


External Computer Connectors

These topics list the pin assignments for your computer's external connectors.

•	Parallel Printer Connector
25-pin D-submini female

•	Serial Port Connectors
9-pin D-submini male

•	Keyboard and Mouse Connectors
6-pin mini-DIN

•	Feature Connector
26-pin output-only


Parallel Printer Connector

The parallel printer connector provides an interface to a printer or other parallel devices.  The table below lists pin assignments.  An asterisk (*) indicates an active low signal.

Parallel Printer Pinout

DB25 Pin	Signal	Function
1	STB-R*	Strobe
2	PRTD0	Printer data bit 0
3	PRTD1	Printer data bit 1
4	PRTD2	Printer data bit 2
5	PRTD3	Printer data bit 3
6	PRTD4	Printer data bit 4
7	PRTD5	Printer data bit 5
8	PRTD6	Printer data bit 6
9	PRTD7	Printer data bit 7
10	ACK*	Acknowledge
11	BUSY	Busy
12	PE	Paper end
13	SLCT	Select
14	AUTOFDXT*	Autofeed
15	ERR*	Error
16	INIT*	Initialize printer
17	SLCTIN*	Select input
18 to 25	GND	Ground


Serial Port Connectors

The serial port connectors consist of two 9-pin D-submini connectors. The two connectors are not interchangeable.  The table below lists the pins assignments.

The baud rates supported by the computer's serial ports are 300, 1200, 2400, 4800, 9600, 19 200, and 38 400.

9-Pin Serial Port Pinouts

DB9 Pin	Signal	Function
1	DCD	Data carrier detect
2	RXD	Receive data
3	TXD	Transmit data
4	DTR	Data terminal ready
5	GND	Ground
6	DSR	Data set ready
7	RTS	Request to send
8	CTS	Clear to send
9	RI	Ring indicator


Feature Connector

The system card provides a VESA-standard VGA pass-through connecter called the feature connector.  The connector enables an additional VGA board or 8514/A board to pass-through or be pass-throughed by the system card.  The signals for the feature connector are listed below.

Feature Connector Pin Assignments

Pin #	Function	Pin #	Function
1	Ground	2	Pixel data 0
3	Ground	4	Pixel data 1
5	Ground	6	Pixel data 2
7	EVIDEO L	8	Pixel data 3
9	ESYNC L	10	Pixel data 4
11	EPCLK L	12	Pixel data 5
13	N/C	14	Pixel data 6
15	Ground	16	Pixel data 7
17	Ground	18	Pixel clock
19	Ground	20	Blank
21	Ground	22	Horizontal SYNC
23	N/C	24	Vertical SYNC
25	No pin	26	Ground


Keyboard and Mouse Connectors

The keyboard and mouse connectors consist of two 6-pin mini-DIN connectors.  The table below lists the pin assignments.

Keyboard and Mouse Connector Pinouts

Pin	Signal
1	Data
2	Reserved
3	Ground
4	+5 V dc (fused)
5	Clock
6	No connection


EISA Expansion Slots

The main logic board contains five ISA expansion slots.  The maximum available +5 V dc current allowable to any expansion slot depends upon the following parameters:

•	Power supply capacity

•	The +5 V dc requirements of the main logic board and CPU module

•	The +5 V dc requirements of the peripherals

•	The power demands of all other slots in use


PCI Local Bus Expansion Slots

The main logic board contains three PCI local bus expansion slots.  These slots support:

•	5 V dc only PCI expansion boards

•	5/3.3 V dc universal PCI expansion boards

•	Bus mastering


Power Supply and Input Power Requirements

The power supply provides four dc voltages: +12 V dc, −12 V dc, +5 V dc, −5 V dc.  These voltages are used by the various components within the computer.  The table below lists the input power requirements.  Rated input current includes outlet current.

Computer Input Power Requirements

Rated  Voltage Range	Maximum Range	Rated Input Current	Operating Frequency Range
100 V ac - 120 V ac	88 V ac  - 132 V ac	7 A	47 Hz - 63 Hz
220 V ac - 240 V ac	176 V ac - 264 V ac	3.5 A	47 Hz - 63 Hz


Nominal Current Requirements

PRIORIS XL servers provide the following nominal current requirements:

•	+3.3 V dc 35 A

•	+5 V dc 38 A

•	-5 V dc 0.5 A

•	+12 V dc 7 A

•	−12 V dc 0.5 A


Known Limitations

•	Do not install a 5¼-inch diskette drive in the top drive bay.  EMI shielding might cause elecrical shorts to the etch on the diskette drives circuit board.

•	Due to the length of the IDE cable, make sure IDE drives are installed in drive bay slots 1 and 2.  Otherwise, the IDE cable will not reach the IDE drives connector.

•	PCI IDE expansion boards will not work in your server.

•	The time required to boot your server might increase when a DE422 network card is installed in a server that uses a Pentium CPU module.


Main Logic Board Jumpers

The illustration shows the locations of the main logic board jumper pins.  Note that the square pin of each jumper block is pin 1.

See the table in Main Logic Board Jumper Settings for a list of the main logic board jumpers and factory-default settings.

	CAUTION Do not touch any electronic component unless you are safely grounded.  Wear a grounded wrist strap or touch an exposed metal part of the system box chassis.  A static discharge from your fingers can result in permanent damage to electronic components. Do not use the password clear jumper (J32); use instead the clear CMOS jumper (J29).  Using the clear CMOS jumper then sets all your other CMOS settings back to the defaults.

See also:	Main Logic Board Jumper Settings
CPU Module Jumper Settings


Main Logic Board Jumper Settings

Factory default settings are listed in blue.

Feature	Description	Setting
VGA IRQ 9 select	Enable Disable	J9, jumpered J9, open
Onboard VGA	Enabled Disabled	J17, jumpered J17, open
Enable wide SCSI	Enabled Disabled	J22, jumpered J22, open
CPU number select	Single CPU Multi-CPU	J24, pins 1 and 2 open J25, pins 1 and 2 open J24, pins 2 and 3 jumpered J25, pins 2 and 3 jumpered
CPU type select	Reserved  Intel	J27, jumpered J27, open
Display type	Mono Color	J37, open J37, jumpered
Password clear	Normal mode Password clear (MFG test)	J38, open J38, jumpered
Recovery mode	Normal Recovery mode	J39, open J39, jumpered
BIOS upgrade	Enable Disable	J41, jumpered( J41, open
Boot block writeable	Disable Enable	J50, pins 1 & 2 jumpered( J50, pins 2 & 3 jumpered


NOTE

ROM-based Setup must be enabled.


NOTE

Disabling this jumper prevents corruption of the boot block when a boot block update is not required


CPU Module Jumper Settings (Pentium)
CPU Module Jumper Settings

Refer to the appropriate CPU Module Specifications booklet for information on CPU jumper settings.


Problem Solving and Troubleshooting

These topics provide initial troubleshooting procedures and tables listing specific problems, probable causes, and recommended actions to take if your server fails after you configure it or after you install optional hardware or software.

Refer to the documentation supplied with additional options if you are experiencing problems with specific options that you have installed.

Initial Troubleshooting

Server Troubleshooting

Disk Drive Troubleshooting

Monitor Troubleshooting

See also:	Server Messages


Initial Troubleshooting

Follow these general procedures to troubleshoot your PRIORIS XL Server.

Press [Ctrl] + [Alt] + [Del].  If your server fails to boot, turn it off, wait until all hard disk drives completely spin down, and then turn it back on.

Ensure that all cables and connections are secure.

If the POST detects an error refer to Server Messages and take the appropriate steps to correct the problem.  After the problem has been resolved, restart the server.

Make sure all necessary video, printer, and application device drivers are properly installed.

Run the diagnostic software.

Run the SCU.

See also:	 Configuring Your Server

NOTE
If you need to return a failed component, pack it in its original container and return it to Digital for service.

If you are a self-maintenance customer, call your Digital service representative for assistance and recommendations.


Server Troubleshooting

Problem	Possible Cause	Action
No response when the server is turned on.	Server is not plugged in.	Turn off the server, plug it in, and then turn it back on again.
	No power at the wall outlet.	Use another wall outlet.
	Main logic board  failure.	Replace main logic board.
	Main logic board jumpers incorrectly set.	Set all appropriate jumpers.
	CPU module failure.	Replace CPU module.
	CPU module  jumpers incorrectly set.	Make sure the jumpers are correctly set.
Power is on, but there is no screen display.	Brightness and contrast controls are not correctly set.	Adjust the brightness and contrast controls.
	Monitor is off.	Turn on the monitor.
	Monitor cable is incorrectly installed.	Check all monitor connections.
	Incorrect VGA drivers installed.	Install the correct VGA drivers.  See CD-ROM Startup Diskette and CD-ROM
	Video controller failure.	Replace main logic board.
Server operates incorrectly after installing optional expansion board.	Expansion board installed incorrectly.	Remove expansion board and reinstall.
	Did not run SCU to configure expansion board after installation.	Run the SCU to properly configure expansion board. See Configuring Your Server
	Expansion board failure.	Remove expansion board and reboot.  If server boots without errors, replace expansion board.
Server operates incorrectly after installing optional system memory (SIMMs).	SIMMs installed incorrectly. SIMMs have failed.	Remove SIMMs and reinstall. Replace SIMMs.
Server does not boot from an IDE hard disk drive.	Operating system software is not installed on the IDE hard disk drive.	Install the appropriate operating system.
	IDE hard disk drive is not correctly formatted or the requested partition does not exist.	Format the IDE hard disk drive or partition the IDE hard disk drive using the supplied operating system software.
	There is no software on the requested partition.	Install software on the requested partition.
	IDE hard disk drive jumpers incorrectly set.	Refer to the supplied IDE hard disk drive kit installation instructions.
	IDE drive type incorrect.	Run the SCU to identify the correct drive type. See drive type label on drive or consult drive documentation.
	Loose cables.	Secure all cable connections.
	Onboard IDE interface disabled.	Run the SCU and set the IDE Hard Disk Drives option to "Enabled."
	"Boot from Hard Disk C" is disabled in SCU	Run the SCU and enable the "Boot from Hard Disk C" option.
Server does not recognize an internal SCSI device.	SCSI device jumpers incorrectly set.	Refer to the supplied SCSI device kit installation instructions.
	SCSI ID conflicts.	Refer to the supplied SCSI device kit installation in structions on setting SCSI IDs.
	Terminating resistors not removed from the SCSI device.	Remove terminating resistors. Refer to the supplied kit installation instructions.
	SCSI controller failure.	Replace main logic board.
	Loose SCSI cable.	Secure all cable connections.
	Main logic board jumper incorrectly set.	Make sure jumper J22 (Enable Wide SCSI) is properly set for the internal wide SCSI devices installed. See Main Logic Board Jumpers
Server does not recognize an external SCSI device.	SCSI device jumpers incorrectly set.	Refer to the supplied SCSI device kit installation instructions.
	SCSI ID conflicts.	Refer to the supplied SCSI device kit installation in structions on setting SCSI IDs.
	Terminating resistors not removed from the SCSI device.	Remove terminating resistors. Refer to the supplied kit installation instructions.
	SCSI controller failure.	Replace main logic board.
	Loose SCSI cable.	Secure all cable connections.
Server does not boot from an internal SCSI hard disk drive.	Operating system software is not installed on the SCSI hard disk drive.	Install the appropriate operating system.
	Requested partition does not exist.	Partition the SCSI hard disk drive and then reload the operating software.
	Server not configured for SCSI hard disk drive operation.	Run the SCU and set Hard Disk 1/Hard Disk 2 to "Not Installed" and IDE Hard Disk Drives options to "Disabled."  This disables the onboard IDE interface. NOTE If you have both IDE and SCSI hard disk drives installed, your server uses the IDE hard disk drive as the boot device.
	SCSI boot hard disk drive not formatted.	Format the SCSI hard disk drive.
	SCSI device drivers not installed or incorrectly installed on SCSI boot hard disk drive.	Properly install all required SCSI device drivers.  See CD-ROM Startup Diskette and CD-ROM
Server does not boot from a target diskette drive.	Drive ID incorrectly set.	Make sure the drive ID is correctly set (refer to the documentation supplied with your diskette drive).
	Diskette drive not enabled.	Run the SCU to enable the diskette drive.
	Diskette boot option disabled.	Run the SCU and set Boot From Diskette A to "Enabled."
	Diskette does not contain start-up files.	Insert a diskette with the correct start-up files.
	Diskette drive is empty.	Insert a diskette that contains an operating system.
	Diskette is worn or damaged.	Try another diskette.
	Loose cables.	Secure all cable connections.
No response to keyboard commands.	Keyboard is password protected.	Enter the keyboard password.
	Keyboard is not connected.	Power down the server and connect the keyboard.
	Keyboard is connected to the mouse port.	Power down the server and connect the keyboard to the keyboard port.
No response to mouse commands.	Mouse is password protected.	Enter the keyboard and mouse password.
	Mouse is not connected.	Power down the server and connect the mouse.
	Mouse is connected to the keyboard port.	Power down the server and connect the mouse to the mouse port.
	Mouse driver not installed.	Install the appropriate mouse driver.  Refer to your supplied application software documentation.
Server operates correctly but application software does not.	Application software installed incorrectly.	Refer to your application software documentation.
	CPU speed setting causes conflict with application software.	Run the SCU and reduce CPU speed setting.  Refer to Running the SCU
	Having external cache enabled causes conflict with application software.	Run the SCU and disable external cache. Refer to Running the SCU


Disk Drive Troubleshooting

Problem	Possible Cause	Action
IDE/SCSI hard disk drive cannot read or write information.	Incorrect disk drive jumper settings.	Refer to the supplied kit installation instructions..
	Loose or incorrectly installed cables.	Make sure all cables are correctly installed.
	IDE/SCSI hard disk drive is not correctly formatted or partitioned.	Format and partition as required using the supplied operating system
	IDE drive type incorrect.	Run the SCU to identify the correct drive type
Target diskette drive cannot read or write information	Diskette is not formatted.	Format the diskette.
	Diskette is worn or damaged.	Try another diskette.
	Diskette is write-protected.	Slide the write-protect switch so the hole is not visible (3½-inch diskette) or uncover the writeprotect notch (5¼-inch diskette).
	Diskette drive is empty.	Insert a diskette.
.	Diskette write protection enabled.	Run the SCU and set the Diskette Write Protection option to "Disabled."


Monitor Troubleshooting

Problem	Possible Cause	Action
Monitor power indicator is not on.	Monitor is turned off.	Turn on the monitor.
	Power cord is not connected.	Connect the power cord to the server.
	No power at wall outlet.	Use another outlet.
	Power indicator is defective.	Replace power indicator.
No screen display.	Monitor power cable is loose or disconnected.	Secure or reattach the monitor power cable.
	Configuration error.	Run the SCU to configure the server for VGA operation. Set the jumper for VGA operation.  See Main Logic Board Jumpers
	Monitor brightness and contrast controls are incorrectly set.	Adjust the monitor brightness and contrast controls.
No monitor display while loading Windows video drivers.	Monitor type incorrectly set.	Set the correct monitor type using the appropriate utility.  Also see Accessing CD-ROM Disk Image Files and Utilities and any appropriate README files.
Distorted, rolling, or flickering screen display, or wrong/uneven color.	Monitor incorrectly adjusted.	Adjust accordingly.
	Monitor signal cable incorrectly installed.	Straighten any bent connector pins and then reconnect.
Color monitor displaying monochrome.	Server was turned on before the monitor was turned on.	Turn off the server, turn on the monitor, then turn the server back on.
	Video jumper incorrectly set.	Set the jumper for color operation.  (See Main Logic Board Jumpers ).
Monitor fails to switch to high-resolution mode.	Appropriate high-resolution video drivers are not installed or incorrectly installed.	Correctly install all appropriate high-resolution video drivers.  See Accessing CD-ROM Disk Image Files and Utilities
Monitor display not centered while loading Windows video drivers.	Monitor type incorrectly set.	Set the correct monitor type using the appropriate utility.  Also see Accessing CD-ROM Disk Image Files and Utilities and any appropriate README files.


Contents

PRIORIS XL Server Field Service/Field Training - Version 2.0

The following Help Topics or groups of Help Topics are available:

About This Help System

Introduction

General Server Features

Server Utilities & Configuration

Expanding Your Server

Server Messages

Problem Solving and Troubleshooting

Device Mapping

FRU List (Part Numbers)

Technical Specifications

Glossary

Related Material

For Help on Help, Press F1


General Server Features

i486/PCI CPU Features

Pentium/PCI CPU Features

PCI Features

Standard Server Features

Standard Slots and Ports

Storage Bay Features

Front Panel Controls and Indicators

Rear Panel Connectors and Voltage Select Switch


Server Utilities & Configuration

CD-ROM Startup Diskette and CD-ROM

Before Using the CD-ROM Startup Diskette and CD-ROM

Accessing CD-ROM Disk Image Files and Utilities

About UPGRADE.EXE

Creating a Recovery Diskette

Upgrading Your Server's BIOS

Running SETUP.EXE

Running EPP3SMC.EXE

Running KP.EXE

Configuring Your Server

Before Using the SCU

Running the System Configuration Utility (SCU)

SCU and Setup Options


About This Help System

This topic is designed to help you understand the way this Help file has been organized and the graphic and stylistic conventions which have been used in presenting the material.

Organization

There are several "layers" of contents pages in this Help file, each grouping a related set of Help topics.  The topics are also selectively cross-referenced, so that you can jump quickly between Help topics grouped in different sections of the file.  Simply click on the highlighted words, phrases, and topic titles to move from topic to topic.

Enhanced Illustrations

Where parts of an illustration appear boxed by dotted lines, you can click on the boxed area to see further information about the item being illustrated.  Note that if you have significantly reduced the size of the Help window, some illustrations may not be completely visible and/or the scrollable area of the window may become too small to display text.  If this happens, simply increase the size of the Help window until all the information you need becomes visible or can be scrolled into view.

The illustrations in this Help system have been designed for high-resolution display.  You should set your monitor to the highest possible screen resolution in order to view the illustrations most clearly.

Note and Legend Buttons

Some Help topics contain special buttons which indicate the presence of additional information.  For example, the [image] button identifies a Legend describing features of the illustration it accompanies.  Clicking on the button will allow the Legend or Note to appear for you to study.

Color

Information of special importance has been indicated in this Help file by the use of colored text: blue for NOTE, red for CAUTION, and dark red for WARNING.  (If your system is equipped with a monochrome display, these colors will appear as BOLD text.)  You may find some of this colored text difficult to read if you have made changes in your Windows screen colors.  This problem can be solved by returning the color settings to one of the pre-defined Windows color sets while you are using the Help file.

Entire contents of this Help file copyright © 1994 Digital Equipment Corporation.


Introduction

PRIORIS XL Servers are high-performance, highly scaleable network servers equipped with the latest CPU, EISA bus, and PCI local bus technology.  They can be used as stand-alone servers, or as servers in an network environment.  Developed using modular CPU technology and offering a host of high-performance options, the PRIORIS XL Server offers you the most advanced computer in its class.  Note that your monitor, keyboard, and mouse might look different from the one shown.

Server Description
All PRIORIS XL Servers are industry-standard Intel microprocessor-based computers using a versatile tower enclosure.  The server also features several modular CPU board designs that allow for easy server upgrades to the latest available CPU technology.  The Intel i486-based CPU module employs an Intel Pentium OverDrive Ready ZIF socket to allow CPU upgrades to future Intel Pentium microprocessor technologies.  The Intel Pentium-based CPU module offers full 64-bit processing with ZIF technologies upgradeable via future Intel OverDrive CPUs.  Contact your local Digital sales representative for server upgrade information.


i486/PCI CPU Features

Your PRIORIS XL Server might contain an Intel i486 CPU.  The i486 CPU and related high-performance caching circuitry are located on a CPU module connected to the main logic board inside your server.  i486/PCI CPU features include:

•	I486 or IntelDX4 CPU operating at 33 MHz externally

•	Standard 128 KB secondary cache memory, optionally expandable to 256 KB

•	ZIF socket for CPU upgrades


Pentium/PCI CPU Features

Your PRIORIS XL Server might contain an Intel Pentium CPU.  The Pentium CPU and related high-performance caching circuitry are located on a CPU module connected to the main logic board inside your server.  Pentium/PCI CPU features include:

•	Pentium CPU operating at 60, 66, or 90 MHz

•	Standard 256 KB of secondary cache memory

•	ZIF socket for CPU upgrades

NOTE	If you install a DE422 network card in a server with a Pentium CPU, the time required to boot your computer may increase.


PCI Features

Your server's PCI architecture delivers maximum server performance by providing a wider data path, greater speed, and improved expandability.  Simply put, PCI removes various types of peripheral controllers from the slower ISA and EISA buses and connects them directly to a wider, faster data path.  This results in faster data transfers for devices such as SCSI controllers and high-end video adapters.  This is extremely important while running graphic-intensive software.  Features include:

•	Highest performing bus on the market today

•	Offers the best expandability for high-performance peripheral devices

•	Supports multiple bus masters

•	32-bit data transfer at 132 MB per second (maximum)

•	PCI-to-ISA bridge circuitry allows continued use of existing ISA expansion boards on the market that do not require the high data transfer rate of PCI

NOTE	PCI IDE cards do not work with the PRIORIS XL Server.


Standard Server Features

IDE	Dual IDE controller - supports 2 drives and 32-bit accesses under Windows

Floppy	Dual floppy controller - supports 2 drives:
720 KB, 1.44 MB, and 2.88 MB 3½-inch drive, and
360 KB, 1.2 MB 5¼-inch drive

SCSI	Onboard Adaptec AIC-7870 PCI-based SCSI controller -
Supports up to seven SCSI devices by way of the internal
50-pin fast SCSI or 68-pin fast/wide SCSI bus


Storage Bay Features

Front access	1 - 3½-inch (diskette drive) 1-inch high
2 - 5¼-inch half-height bays (optional storage devices) or
1 - 5¼-inch full-height bay (optional storage device)

Internal	1 - 3½-inch, 1-inch high device (in place of 3½-inch diskette drive)
6 - 3½-inch, 1-inch high devices or 4 - 3½-inch half-height devices

See also:	 Front Panel Controls and Indicators


Standard Slots and Ports

Expansion slots	5 EISA slots and 2 PCI 32-bit local bus slots or
4 EISA and 3 PCI 32-bit local bus slots

Serial COMM ports	2 serial ports - 16550 compatible

Printer port	1 parallel (full ECP and EPP support)

Mouse	PS/2 compatible

Keyboard	PS/2 compatible

Video	Industry-standard 15-pin VGA analog

Feature connector	26-pin output-only connector (can be used with
a graphic accelerator or other multi-display use)

A feature connector cable is supplied with your server

See also:	Expansion Slots
Rear Panel Connectors and Voltage Select Switch


Front Panel Controls and Indicators

Click on the Legend icon to see a list describing the purpose and function of the various controls and indicators on the front panel.

 Legend


Legend - Front Panel Controls and Indicators

A		name plate	Medallion showing server model name
B		drive bays	These are the upper 5¼-inch drive bays.
C		3½-inch diskette drive	This is the factory-installed 3½-inch diskette drive (might have an internal device in place of)
D		diskette eject button	Pressing this button releases a 3½-inch diskette inserted in the diskette drive.
E		power on/off button	This button turns ac power on and off.
F		reset button	This button resets the server and causes POST to run.
G		power light	The power light is lit when the server is on.
G		hard disk drive light	The hard disk drive light is lit when a hard disk drive is in use (IDE and SCSI).
H		internal drive bays.	These are the internal 3½-inch drive bays.
I		security door	This door prevents unauthorized access to front panel controls and indicators.
J		security door lock/ chassis lock	This locks the security door and the left side panel to prevent unauthorized access to the inside of the server.  Insert the key into the keylock at lock position number 2.  To open the security door, turn the key clockwise to lock position number 1.  To open the side panel, continue to turn the key clockwise to the unlock position.


CAUTION

Do not install a 5.25-inch floppy drive in the top drive bay.  EMI shielding may cause electrical shorts to the etch on the disk.


Rear Panel Connectors and Voltage Select Switch

Click on the Legend icon to see a list describing the purpose and function of the various controls and indicators on the rear panel.

 Legend


Legend - Rear Panel Connectors and Voltage Select Switch

A	ac output connector	Allows you to connect a monitor to ac power.
B	ac line connector	Allows you to connect the server to an ac power source.
C	mouse connector	Allows you to connect a PS/2 compatible mouse.
D	keyboard connector	Allows you to connect a 101-key or 102-key keyboard.
E	serial port connectors	These ports allow you to connect serial devices, such as an external modem.
F	parallel port connector	This port allows you to connect an industrystandard parallel printer.
G	expansion slots  (EISA, PCI, EISA/PCI)	These slots allow you to install up to five EISA and two PCI local bus expansion boards, or four EISA and three PCI local bus expansion boards.  (See Expansion Slots for further information.)
H	voltage select switch	Allows you to select 115 V ac input power or 230 V ac input power.
I	analog video connector	Provides the interface between the onboard video controller and a supported monitor
J	padlock ring	Allows you to secure your server with your own padlock to help prevent theft.
K	SCSI knockouts	Allow you to connect external SCSI devices to your server.  The top knockout is for a narrow (50-pin) connector.  The bottom knockout is for a wide (68-pin) connector.


CD-ROM Startup Diskette and CD-ROM

Your server comes with a CD-ROM startup diskette used to access your server utilities, operating system-specific SCSI device drivers, VGA device drivers, and mouse drivers contained on the CD-ROM.  Use the CD-ROM startup diskette and CD-ROM to:

•	Copy operating system-specific 7870 SCSI device driver disk images to diskettes for use when loading your operating system

•	Copy VGA device drivers to diskettes after installing your operating system

•	Run the following MS-DOS utilities:

•	UPGRADE.EXE — allows you to upgrade or restore your server's BIOS via Flash ROM

•	SETUP.EXE — allows you to run an MS-DOS executable version of the BIOS Setup utility

•	Create a French, German, Spanish, or Italian System Configuration Utility (SCU) diskette.

NOTE	The CD-ROM also contains EPP and Logitech mouse drivers, and the keyboard and mouse password utility KP.EXE.  The EPP and mouse drivers can be installed directly from the CD-ROM.  The keyboard and mouse password utility is described elsewhere in this Help file.


Before Using the CD-ROM Startup Diskette and CD-ROM

If you are unfamiliar with utility programs and their uses, carefully read and understand the following information before attempting to use the CD-ROM startup diskette and CD-ROM.

Also, make sure your server operates as expected following the instructions in Chapter 1 of your Users Guide.

See also:	Configuring Your Server


Accessing CD-ROM Disk Image Files and Utilities

Before you use the factory installed CD-ROM drive, read the CD-ROM documentation supplied with your server.  Also, follow these procedures to copy SCSI and VGA disk images, run server utilities, or create a language SCU diskette:

1.	Insert the CD-ROM into the CD-ROM drive.

2.	Insert the CD-ROM startup diskette into drive A and boot your server.

After your server boots, you will be prompted for a language selection.  Select your preferred language.  Afterwards, the following menu will appear on your monitor screen.

View Startup README file

Create 7870 SCSI Drivers diskettes for OS build

Create VGA display drivers diskettes

Modify BIOS setup (SETUP.EXE)

Run the Flash BIOS Upgrade Utility (UPGRADE.EXE)

Create System Configuration Utility disk

Exit

3.	Select an appropriate menu item and then press Enter.

Follow the instructions on your monitor screen after selecting the appropriate menu item.

Also, read any additional README files on the CD-ROM as well as the documentation supplied with the CD-ROM.


UPGRADE.EXE
About UPGRADE.EXE

All servers have BIOS software in a read-only, non-volatile memory (ROM) chip.  This BIOS initializes hardware and boots the operating system when the server is turned on.  The BIOS also provides access to other services such as keyboard and disk drives.

Your server comes equipped with flash memory.  This means that you can restore your server's BIOS simply by running the UPGRADE.EXE utility contained on the CD-ROM startup diskette.  You can also upgrade your server's BIOS to future releases by running UPGRADE.EXE along with any flash BIOS update diskette if necessary.

 Before Using UPGRADE.EXE


Before Using UPGRADE.EXE

If you are not familiar with utility programs and their uses, carefully read and understand the following information before attempting to use UPGRADE.EXE.

Make sure your server operates as expected using the instructions in Chapter 1 of your User's Guide.

Have the following items available before you begin:

•	Blank formatted diskette

•	CD-ROM startup diskette (supplied with your server)

•	Recovery diskette

NOTE	Before attempting to upgrade the flash BIOS, ensure that J41 is set correctly.  To perform a flash BIOS upgrade, J41 must be set to enable.  After the upgrade, make sure J41 is set back to disable as a security measure (if desired).

See also:	Creating a Recovery Diskette
Technical Specifications


Creating a Recovery Diskette

1.	Insert the CD-ROM startup diskette into drive A.

2.	Boot your server.

3.	Allow POST to complete.

4.	Highlight Run the Flash BIOS Upgrade Utility from the main menu, and then press [Enter].

This invokes UPGRADE.EXE.  Also, the following menu items appear on the screen:

Make Recovery Diskette from Flash
Make Recovery Diskette from Image File
Upgrade Flash from Image File
Save Flash to Image File
Compare Flash to Image File
BIOS Information
Exit

For additional on-line help,  press [F1].

5.	Select the Make Recovery Diskette from Flash menu option.

The message, "Please select the diskette drive that you will use to create a Flash Recovery Diskette, or select "Cancel" to abort," appears on your screen.

6.	Press [Tab] or the up and down arrow keys to highlight the diskette drive you want to use, then press [Enter].   Drive A is the default diskette drive.

The message, "Insert a formatted diskette into drive A.  The contents of this diskette will be lost!  and replaced with system recovery software and the BIOS image you specified.  Select "Continue" to start writing the recovery diskette, or "Cancel" to abort," appears on your screen.

7.	Insert a blank (formatted) diskette in drive A, and select Continue to proceed with creating a recovery diskette.  A message window notifies you when it completes.  Press any key to continue.

8.	Remove the recovery diskette and store it in a safe place.


Upgrading Your Server's BIOS

1.	Perform steps 1 through 4 from Creating a Recovery Diskette.

2.	Select the Upgrade Flash from Image File menu option.

You are then prompted to select a BIOS image file to program into flash memory.

NOTE	If your BIOS resides on a diskette, you need to use that diskette to upgrade your BIOS.

3.	Press [Enter] to list a directory of .BIN (BIOS image) files.  Select the image file you want to use.

The message, "Your BIOS will now be replaced by the new BIOS image you selected.  Select "Program" to start, or "Cancel" to abort.  Keep in mind that programming a new BIOS into Flash memory requires a fair amount of power.  If you are running on battery power you should have a full charge!" appears on your screen.

4.	Press [Enter] to continue programming the new BIOS into flash memory.

The message, "DO NOT TURN OFF THE POWER," appears on your screen.

The flash memory is erased, and replaced by the new BIOS.  Depending on the size of flash memory, programming takes 20-40 seconds.  When programming completes, a message briefly appears on your screen, then the server attempts to reboot.

5.	Remove the CD-ROM startup diskette and allow your server to reboot without error.

If an error occurs, the flash memory is corrupted and a beep sounds when your server is rebooted.  If this occurs, insert the recovery diskette into drive A or B so the original BIOS can be copied back into flash memory.

If server does not reboot and the beep does not sound, turn off your server.  Set the main logic board jumper J39 to recovery mode.  This forces a BIOS recovery process.

⇒	See Technical Specifications

6.	Insert the CD-ROM startup diskette into drive A, invoke UPGRADE.EXE, and then select the Compare Flash to Image File menu option.

The message, "Select BIOS Image File Name to compare against flash memory," appears on your screen.

7.	Press [Enter] to display a list of .BIN (BIOS image) files.  Select the .BIN file you want to compare with flash memory.

A message window shows whether flash memory contains the same BIOS as the disk file.

Press any key to continue.

8.	If applicable, select the Save Flash to Image File menu option.  This option reads BIOS out of flash memory and stores it on a disk file.  A valid image file can be used with other upgrade commands that need an image file.

The default name for an image file is DEFAULT.BIN.  You can type in a different file name if you do not want to use the default name.

9.	Exit UPGRADE.EXE and remove the CD-ROM startup diskette.


Running SETUP.EXE

SETUP.EXE allows you to select and permanently store information about the server's installed hardware and software in the battery-backed memory of the CMOS RAM.  This information takes effect each time the server boots and can be changed each time you run Setup.

NOTE	If you use Setup to make changes to your server configuration, it is recommended that you use the ROM Based Setup.  Use SETUP.EXE only when you need to disable/enable the ROM Based Setup option.

NOTE	Also, if you use SETUP.EXE to disable the ROM Based Setup option, be sure you keep the CD-ROM startup diskette readily available.  You will need it if you want to change any server setup information.

To access SETUP.EXE:

1.	Insert the CD-ROM startup diskette into drive A.

2.	Boot your server.

3.	Allow POST to complete.

•	If an error message appears on your screen, see Server Messages,

4.	Highlight Modify BIOS setup from the main menu, and then press [Enter].

Page 1 of Setup appears.

5.	Press the right arrow key to move the cursor to the ROM Based Setup option.  Change the setting to Enable/Disable.

•	See also:	Configuring Your Server

6.	Follow the instructions on your screen to exit SETUP.EXE (saving the changes).

7.	Remove the CD-ROM startup diskette.

8.	Reboot your server.


EPP3SMC.EXE

EPP3SMC.EXE can be executed as an MS-DOS command or added to your CONFIG.SYS file as a device driver.  In either case, use the BIOS Setup utility or the SCU to set the parallel port to EPP mode.


KP.EXE

KP.EXE is an MS-DOS executable file that allows you to set a password for the keyboard and mouse without turning off your server.  When you set this password, the keyboard and mouse can not process any input other than the current keyboard and mouse password.  Setting this password secures your server against unauthorized access while your server remains turned on.

If you set a keyboard and mouse password, each time you turn off your server, the password is deleted.  When you turn on the server again, you must set a new keyboard and mouse password.  When you have a power-on password set, the power-on password becomes the keyboard and mouse password.

Keyboard and mouse passwords can have as many as seven upper or lower case keyboard characters and is recorded exactly as you enter them.  For example, if you use the 6 from the typewriter key section of the keyboard, you cannot substitute the 6 from the numeric keypad.

NOTE	When you create a keyboard and mouse password, the characters do not appear on the screen as you type them.  Each time you enter or change a keyboard and mouse password, the characters also do not appear on the screen as you type them.

See also:	Copying KP.EXE onto Your Server's Hard Disk
Setting a Keyboard and Mouse Password


Copying KP.EXE onto Your Server's Hard Disk

1.	Insert the CD-ROM into the CD-ROM drive.

2.	Boot your server.

3.	Allow the POST to complete.

If an error message appears on your screen, see Server Messages,

4.	Copy KP.EXE from your CD-ROM onto your hard disk drive.

5.	Remove the CD-ROM.


Setting a Keyboard and Mouse Password

After copying KP.EXE onto your server's hard disk, you can set a keyboard and mouse password without using the CD-ROM.

Perform the following steps to set a keyboard and mouse password:

1.	At the C:\> prompt type kp then press [Enter].  You are then prompted to enter a password.

NOTE	Other applications, such as QEMM386 V6.01, use the character string kp to invoke or enable commands.  If you have such an application installed, add the /nic parameter when you want to set a keyboard and mouse password using the Keyboard Password utility.

2.	Enter a password then press [Enter].  You are then prompted to type a password again to verify it.

3.	Enter the password then press [Enter].  The keyboard has been locked.

4.	To unlock your keyboard, enter the password and press [Enter].


Configuring Your Server

The information in the Help topics listed below explains how to configure your server using the System Configuration utility (SCU). Digital recommends that you use the SCU to initially configure your server and each time you add hardware, remove hardware, or change server settings.

NOTE	If your server was delivered with factory-installed hardware and software, it has already been configured.

Before Using the SCU

Running the System Configuration Utility (SCU)

Configure Your Computer

Maintain the SCU Diskette

SCU Keyboard Function Keys

SCI Files and CFG Files

SCU and Setup Options


Before Using the SCU

If you are familiar with utility programs and their uses, refer to the material in the SCU and setup options table as you configure your server.  Otherwise, carefully read and understand all the information in this Help topic before attempting to modify your server's configuration settings

Make sure your server operates as expected using the instructions in Chapter 1, "Getting Started."

In addition, have the following items readily available:

1.	A 1.44 MB formatted diskette.

2.	Configuration (CFG) files supplied with any EISA/PCI expansion boards you have installed.

See also:	SCI Files & CFG Files

3.	Kit installation instructions for any optional hardware you have installed.

See also:	Running the System Configuration Utility (SCU)
SCU and Setup Options


SCU Keyboard Function Keys

The following lists the keyboard function keys that can be used to scroll through the menu screens, and select specific menu items in the SCU.

You can also use the mouse that was shipped with your server to select items in the SCU.  If you are unfamiliar with using the mouse, refer to mouse operation information in Chapter 2 of your Users Guide.

Keyboard Key	Function
[↓]	Moves the cursor down one menu item.
[↑]	Moves the cursor up one menu item.
[→]	Moves the cursor one character to the right.
[←]	Moves the cursor one character to the left.
[Enter]	Displays the available user-selectable settings for the highlighted option or selects the highlighted menu item.
[F6]	Displays available resources (IRQs, DMAs, I/O Ports, or memory) for the highlighted option.
[F10]	Press [F10] to complete a step.
[F1]	Displays the selected menu item's help screen.
[Esc]	Returns the monitor screen to the previously selected menu item.


SCI Files and CFG Files

The SCU creates a System Configuration Information (SCI) file each time you configure your server.  This SCI file can be used on other PRIORIS XL Servers that are equally configured and can serve as a backup to the EISA configuration stored in NVRAM memory.  The SCI file is maintained on the System Configuration Utility diskette and has a default name of SYSTEM.SCI.

Configuration (CFG) files contain main logic board, EISA, PCI, and ISA expansion board vital characteristics and the server resources they require for proper operation.  If you installed additional EISA, PCI, or ISA expansion boards, make sure you copy the CFG files (and overlays, if applicable) associated with the expansion boards, to the System Configuration Utility diskette before attempting to configure your server.

See also:	Maintain the SCU Diskette


Running the SCU
Running the System Configuration Utility (SCU)

Use the SCU if you experience problems with your hard disk and need to reconfigure your server.  In addition, the SCU should be used to modify the configuration after you add or remove hardware, or change server settings.

If this is the first time using the SCU, it is recommended that you follow the procedures in the order given.  If this is a subsequent session, refer to the appropriate sections to update your server configuration.

To run the SCU, perform the following steps:

1.	Install any optional hardware, for example disk drives, EISA expansion boards, and so on.

2.	Make a backup copy of the supplied System Configuration Utility diskette.  Store the original in a secure place and only use the backup copy when running the SCU.  If you are unable to make a backup copy, use the original diskette cautiously.

NOTE	It is recommended that you do not install the SCU or any of its utilities on a hard disk drive.  Running the SCU or any of its utilities from a hard disk drive might cause memory conflicts between the SCU and application software.  This specifically applies to memory managers and Windows applications.

3.	Insert the backup System Configuration Utility diskette into drive A and then soft boot (reset) your server.  The SCU introductory screen appears.

NOTE	The SCU contains help pop-up screens for any selected menu item.  Press [F1] at anytime to display a help screen.  Press [Esc] to remove a help screen.

4.	Press [Enter] to display the SCU Welcome screen.

If no configuration errors appear, the Welcome screen displays information about the SCU.  Press [Enter] to display the Main menu and proceed to Step 6.

If a configuration error appears, the Welcome screen displays information about the error and tells you to reconfigure your server.

Press [Enter] to display the Main menu,  select the Configure Computer option, then select the View and Edit Details   option.

Make any changes as indicated by the POST error message, and then select the Exit and Save  option to end the SCU session and boot the server so the changes take effect.

See also:	Configure Your Computer

5.	If applicable, select the Learn About Configuring Your Computer option to familiarize yourself with the SCU.

6.	If applicable, set the current server time and date using the Set Time  and Set Date  menu options.

7.	Using the Maintain System Configuration Diskette option, copy the CFG files supplied with any EISA, PCI, or ISA expansion board.

See also:	Maintain the SCU Diskette

8.	Select the Configure Computer option to configure your server.

9.	If applicable, select the Maintain System Configuration Diskette option to create, change, or update SCI or CFG files.

10.	To end the SCU session select the Exit From This Utility  option.

11.	If applicable, install your operating system and any application software.


Maintain the SCU Diskette

Select this option to maintain Configuration (CFG) files and System Configuration Information (SCI) files.  The following menu options are available:

•	Create a backup SCI file

•	Load a backup SCI file

•	Copy/update CFG files

•	Copy/update SCI files

•	Delete CFG files

•	Delete SCI files

•	Return to Main menu

See also:	SCI Files and CFG Files


Configure Your Computer

If you are accessing this menu item for the first time, it is recommended that you follow the menu items listed below in the order given.  Click on the check marks beside each step to learn more about the procedure.  If this is a subsequent session, refer to the appropriate menu item to update your server configuration.

NOTE
If you are adding an ISA board, see Adding ISA Boards  before following the menu items.

 Step 1:  Important EISA Configuration Information

 Step 2:  Add or remove boards

 Step 3:  View or edit details

 Step 4:  Examine required switches

 Step 5:  Save and Exit


Adding ISA Boards

Perform the following steps to add ISA boards to your server configuration:

1.	Select "Step 2: Adding and Removing Boards," and update the list of boards and options to include any ISA boards you are going to install in your server.

2.	Select "Step 4: Examine Required Switches," to check the required switch and jumper settings of the ISA boards.

3.	Select "Step 5: Save and Exit," to save your configuration and exit the SCU.

4.	Turn off your server and install the ISA boards.

CAUTION	Do not attempt to physically install boards while your server is turned on.


Step 1:  Important EISA Configuration Information

This menu item provides basic EISA configuration information and how it differs from ISA configuration.  These screens are available at any time during the configuration process by pressing [F1] and by selecting EISA configuration from the help menu.


Step 2:  Adding or Removing Boards

This menu item provides a list of boards and options in your configuration.  You can add, move, and delete boards from this list until it shows all the boards and options you have installed in your server, including the boards you have not yet physically installed.

The SCU automatically detects any EISA expansion boards installed on your server and configures your server accordingly.  The SCU does not automatically detect ISA expansion boards.


Step 3:  View or Edit Details

This menu item allows you to examine and change the setting of each function and the resource allocated for those functions.  If you edit a function or resource in this step, you might have to change the switch or jumper setting.


Step 4:  Examine Required Switches

This menu item allows you to view settings (switches and jumpers) that need to be manually set and software drivers that need to be installed.  These recommendations must be followed exactly, otherwise your server will not work properly.


Step 5:  Save and Exit

This menu item allows you to exit the SCU program with or without saving your configuration settings.


SCU and Setup Options

This Help topic lists the options available in the BIOS Setup utility and in the SCU (View or Edit details).   Following this list are detailed descriptions of the options that need further explanation.

Use the keyboard function keys to help you select options, change values, and display help information.

Specific notes pertaining to some SCU and Setup options may be obtained by clicking on colored entries in the Setup Field column below, and/or by clicking on the icons in the rightmost column.

NOTE
The ROM BIOS Setup utility, SETUP.EXE, and the SCU each contain the options described in the following list.  Digital recommends that you use the SCU to configure your server each time you add hardware, remove hardware, or change server settings.

Setup Field	Settings	Comments
System time	Current time	Displays the current time
System date	Current date	Displays the current date
Language	English  Français Deutsch Italiano Español	Sets the selected language
Diskette A / Diskette B	3.5", 1.44 MB 3.5", 2.88 MB Not Installed 5.25", 360 KB 5.25", 1.2 MB 3.5", 720 KB	Sets the size and density of diskette drives
Hard disk 1 /hard disk 2	Drive types 1 through 49	Enables hard drive size and specific parameters from a predetermined list of drive types.  Drive types 2 and 3 or 48 and 49 are user definable for hard drives not listed in the BIOS drive table
Base memory	Not user selectable	Displays the size of base (conventional) memory
Extended memory	Not user selectable	Displays the current amount of extended memory
Video card	VGA or EGA CGA 40 Column CGA 80 Column Monochrome Not Installed	Sets the video controller type
Keyboard	Installed Not Installed	Enables or disables the keyboard when using the server as a network server
NumLock at boot	On Off	Enables or disables the NumLock feature each time the server boots
Password	System only Setup only System and setup Not Installed	Enables or disables a system power-on and/or BIOS setup password
ROM based setup	Enabled Disabled	Enables or disables the ROM based setup utility
Mouse port	Enabled Disabled	Enables the mouse port and assigns IRQ12 Disables the mouse port and frees up IRQ12 for option use
Parallel port	Enabled at: 378h-37Ah (IRQ7) Enabled at: 278h-27Ah (IRQ7) Enabled at: 3BCh-3BEh (IRQ7) Disabled	Enables or disables any desired onboard printer port at the specified address
	Compatible mode Extended mode	Allows you to select between standard printer and bi-directional (extended) applications
	ECP mode EPP mode	Allows you to select between enhanced parallel port (EPP) and extended capabilities port (ECP) applications
Serial port 1	Enabled at: 3F8h-3FFh (IRQ4) Enabled at: 2F8h-2FFh (IRQ3) Enabled at: 3E8h-3EFh (IRQ4) Enabled at: 2E8h-2EFh (IRQ3) Disabled	Enables or disables any desired onboard serial port at the specified address
Serial port 2	Enabled at: 2F8h-2FFh (IRQ3) Enabled at: 3E8h-3EFh (IRQ4) Enabled at: 2E8h-2EFh (IRQ3) Disabled Enabled at: 3F8h-3FFh (IRQ4)	Enables or disables any desired onboard serial port at the specified address
Diskette drive	Enabled Disabled	Enables or disables the onboard diskette drive controller
Exchange diskette drives	Disabled Enabled	Allows you to logically exchange physical diskette drive designations
Diskettes write protection	Disabled Enabled	Enables or disables the selected diskette drive's write protect option
IDE hard disk drives	Enabled Disabled	Enables or disables the onboard IDE disk drive controller Disable this option for SCSI operation
HDD user definable types	Types 2 and 3 Types 48 and 49	The SCU allows types 2 and 3 or types 48 and 49 to be user definable
HDD data transfer method	Standard PIO	Allows for a standard, compatible data transfer method (one data block per interrupt)
	Auto optimum	Allows the server's BIOS to automatically set up the installed drive for optimum performance (multiple data blocks per interrupt)
Large drive addressing	Standard	The drives cylinder/ head/ sector values are used by the BIOS and operating system
	LBA convert	Allows the servers BIOS to convert the logical cylinder/head/sector used by the operating system to the drives cylinder/head/sector value
Boot from diskette A	Enabled Disabled	Enables or disables drive A as the logical boot device
Boot from hard disk C	Enabled Disabled	Enables or disables drive C as the logical boot device
CPU speed	Fast Slow	Determines the speed used by your server each time you turn it on or reboot
Primary cache	Enabled Disabled	Enables or disables your CPU's internal cache
Secondary cache	Enabled WT Enabled WB Disabled	Enables or disables your server's external cache in WT or WB mode
Cache BIOS ROM	Enabled Disabled	Allows you to enable or disable a caching request for your server's BIOS
Shadow video ROM	Enabled Disabled	Enables or disables your server's shadow video ROM option
Cache video ROM	Enabled Disabled	Enables or disables your server's cache video ROM option
Shadow 32K at C8000	Enabled Disabled	Enables or disables your server's C8000 shadow option
Shadow 32K at D0000	Enabled Disabled	Enables or disables your server's D0000 shadow option
Shadow 32K at D8000	Enabled Disabled	Enables or disables your server's D8000 shadow option
AT bus space	Disabled	Memory hole not available Upper memory is contiguous
	F80000h, .5MB	Sets the memory hole at address F80000 with .5 MB memory available.
	F00000h, 1MB	Sets the memory hole at address F00000 with 1 MB memory available
	E00000h, 1MB	Sets the memory hole at address E00000 with 1 MB memory available
	E00000h, 2MB	Sets the memory hole at address E00000 with 2 MB memory available
	C00000h, 4MB	Sets the memory hole at address C00000 with 4 MB memory available
512KB-640 KB mapping	Main memory PCI/ISA	Allows you to map the  memory region between 512KB to 640KB to your server's main memory Allows you to map the  memory region between 512KB and 640KB to the PCI or ISA bus
PCI device	Enable device:  Enabled Disabled	Allows you to individually enable or disable each PCI slot and onboard SCSI
	Device IRQ: None IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ14 IRQ15	Allows you to individually set an IRQ default for each PCI slot
	Enable master:    Enabled   Disabled	Allows you to enable or disable a PCI device that requires master capability
	Latency timer    Default	Allows you to set the PCI latency timer (in PCI clocks) for each PCI device
PCI arbiter priority	System default	Use system default according to Host/EISA bridge used
	Pure Rotating	The Priority rotates for all PCI devices
	EISA slot	EISA bridge got highest priority
	Onboard SCSI	Onboard SCSI got highest priority
	CPU	CPU got highest priority
	PCI slot 3	PCI slot 3 got highest priority
	PCI slot 2	PCI slot 2 got highest priority
	PCI slot 1	PCI slot 1 got highest priority


Notes
NOTE

Drive type 48 or 49 information is aliased to drive type 2 or 3 when application software does not recognize drive types above 47.  Auto-detection of IDE drive parameter is supported in types 2 and 3 and types 48 and 49.


Notes
NOTE

Some operating systems do not recognize hard disk drive types above 29.  Auto-detection of IDE drive parameter is supported in types 2 and 3 and types 48 and 49.


Notes
NOTE

WB =  Write-Back; WT =  Write-Through.


Notes
NOTE

The options listed are applicable to onboard SCSI and PCI slots 1, 2, and 3.


NOTE

The language field in SETUP.EXE contains all the languages listed as possible settings.  The BIOS Setup utility does not.  The BIOS Setup utility has English only.  Use the CD-ROM startup diskette to run UPGRADE.EXE to update your servers BIOS to one of the following languages:  French, German, Spanish, or Italian.


NOTE

You must initially setup your server with a keyboard.


NOTE

If your server is connected to a network, see your System Administrator.


NOTE

This selection is only applicable to i486 systems.


CAUTION

If you select Disabled, make sure your server is bootable and you have a working copy of SETUP.EXE provided on the supplied CD-ROM.


CAUTION

Make sure the IRQ selected is not in conflict with any main logic board resource or any expansion board.


CAUTION

The PCI Arbiter Priority selection for factory installed PCI expansion boards should stay at the factory default settings.  Modifications to the default setting can cause server failure.


Hard Disk Drive 1/Hard Disk Drive 2

This option allows you to disable or configure your server for the IDE hard disk drives that are installed.  You have the option of manually selecting drive types or using an auto-detect feature.  To use the auto-detect feature, you must first select either drive types 2 and 3 or drive types 48 and 49.  Once selected, you are prompted to execute the auto-detect feature by press the [Enter] key.


Base Memory

The main logic board reserves the first 1024 KB of address space for server use.  Base memory (640 KB) is first assigned to the operating system.  The remaining 384 KB is assigned to shadow main logic board BIOS, video BIOS, or for other server use.

Base memory can be modified using the 512KB-640KB mapping field.


ROM Based Setup

This option is often used by educational facilities that have public access to their servers.  Disabling this option prevents unauthorized personnel from changing any server's configuration parameters.


Parallel Port and Serial Ports

Your server logically assigns LPTx and COMx names to:

•	Parallel ports in the address order 378h and 278h

•	Serial ports in the address order 3F8h, 2F8h, 3E8h, and 2E8h

This occurs during each boot process.  For example, if you disable the serial port that is assigned to 3F8h as COM1, during the next boot cycle the server reassigns the name COM1 to the next enabled serial port in the sequence.


Server Boot Management

Your server comes from the factory with options Boot From Diskette A and Boot From Hard C enabled.  This means that each time you turn on or reset your server it attempts to first boot from diskette A and then from hard disk drive C.  Should you choose to change your servers boot sequence, be aware of the following:

NOTE	If you have a second diskette drive installed, you can choose which one to boot from using the "Exchange Diskette Drives" SCU and Setup option.

Boot From Diskette A	Boot From  Hard Disk C	Comments
Disabled	Disabled	Allowed only if booting from a network server
Enabled	Disabled	Server will only boot from diskette A
Disabled	Enabled	Server will only boot from hard disk drive C


CPU Speed

This option determines the speed used by the server each time you turn it on or reboot it.

•	Fast—is the normal speed and causes the CPU to run at its rated speed.

•	Slow—(equivalent to 8 MHz) is used to reduce the effective CPU speed to be compatible with some speed-dependent application programs.

If an application program does not run correctly at full speed, try disabling all caches or changing the CPU speed to slow.

	CAUTION Server performance will be severely degraded while operating in slow mode.


Large Drive Addressing

This option allows you to select standard for IDE hard disk drives up to 528 MB.  When using IDE drives greater than 528 MB and MS-DOS or MS-Windows as your operating system, select LBA convert.  Select standard for all other operating systems.


HDD Data Transfer Method

This option lets you take advantage of new IDE hard disk drive technologies.   Setting this option to Auto Optimum allows your server's BIOS to interrogate and automatically set up any installed IDE hard disk drive for optimum performance.


Primary Cache

This option lets you enable or disable the microprocessor's internal (primary) cache.  Enabling the cache controller significantly improves server performance by reducing the average number of wait states seen by the microprocessor.

However, in some instances you might want to disable the primary cache, for example, while using time-dependent software.  In this instance, the server can operate but not at full potential.


Secondary Cache

This option lets you enable or disable the server's external (secondary) cache.  Enabling the secondary cache significantly improves server performance by reducing the average number of wait states seen by the microprocessor.

However, in some instances, you might want to disable the secondary cache, for example, while using time-dependent software.  In this instance, the server can operate but not at full potential.

Also, this field can be set to either Write-Back or Write-Through mode.

NOTE
If you do not have any secondary cache installed, make sure this option is set to disabled.


Cache BIOS ROM

This option allows the server's BIOS to be cached in the primary cache and secondary cache (if installed).  This increases server performance because BIOS instructions are executed in cache instead of RAM.


Shadow Video ROM

The main logic board reserves an area of DRAM for a copy of video BIOS ROM.  This DRAM called "shadow memory" is write-protected and has the same addresses as the video BIOS ROM locations.  When you shadow video BIOS ROM, the ROM information is copied into an appropriate area in DRAM.  This increases your server's performance because the video BIOS instructions are in fast DRAM instead of ROM.


Cache Video ROM

This option allows your server to cache video BIOS information.  Caching your server's video ROM provides greater performance at the VGA level, however, when running certain application software, conflicts might occur.


Shadow 32K at C8000, D0000, and D8000

These options allow your server to shadow any device BIOS located in the C8000 to DFFFF address space.  Shadowing device BIOS in these areas increases your server's overall performance.

NOTE
Refer to the devices documentation to determine if this function can be performed.


AT Bus Space

This option allows you to select a memory hole in upper memory (between 1 MB and 16 MB) to be used by optional network expansion boards or optional software using frame-grab memory.  Selecting an available memory hole range avoids memory address conflicts by mapping the physical memory that has been addressed to the region to the top of main memory.

Refer to the user documentation supplied with the optional network expansion board or optional software to see if a specific memory range is required for proper operation.  Also make sure your operating system can support the memory hole selections prior to enabling this feature.

NOTE
Banyan Vines users must select AT Bus Space E00000h, 1 MB to eliminate memory address conflicts.


512KB-640KB Mapping

This option allows the address space between 80000 (512 KB) and 9FFFF (640 KB) to be mapped to the PCI or ISA bus.  Note that when this option is enabled, the amount of conventional memory under MS-DOS is reduced by 128 KB.


PCI Device

This option allows you to configure the PCI slots on your server's main logic board when adding PCI expansion boards.

	CAUTION The PCI Device selections for factory installed PCI expansion boards should stay at the factory default settings.  Modifications can cause server failure.


BIOS

Basic Input/Output System


flash memory

Allows you to restore or update your server's BIOS via software.


PCI local bus

Peripheral Component Interconnect (PCI) Local Bus delivers maximum server performance by providing a wider data path, greater speed, and improved expandability.


recovery diskette

A recovery diskette should always be prepared before attempting to upgrade the BIOS.  This diskette contains a BIOS image and a program to load the image into flash memory.


SCSI controller

Your server uses an embedded SCSI controller that automatically controls SCSI peripherals.  It can also function as a secondary peripheral controller if your server already uses a primary disk drive controller (such as IDE).


SETUP.EXE

Digital recommends that you use SETUP.EXE only when you need to enable the ROM Based Setup option.  Otherwise, use the SCU.


ZIF

Zero Insertion Force.  A ZIF socket allows you to easily upgrade your CPU module by adding a higher performance CPU chip.


Related Material

PRIORIS XL Server Quick Setup Guide	ER-791WW-IA
PRIORIS XL Server User's Guide	ER-791WW-UA
Pentium CPU Modules	ER-78XWW-CA


Glossary

512KB-640KB mapping

AT bus space

Base memory

BIOS

Cache BIOS ROM

Cache video ROM

CPU module

CPU speed

flash memory

HDD data transfer method

new screws

Parallel port and serial ports

PCI device

Primary cache

Recovery diskette

ROM based setup

SCSI controller

Secondary cache

Server battery/real time clock:

Shadow 32K at C8000, D0000, and D8000

Shadow video ROM

SIMM

static electricity

ZIF