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SB21064

INDUSTRIAL COMPUTER SOURCE

SB21064

Processor

Alpha

Processor Speed

275/300MHz

Chip Set

DEC

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

512/2048KB

BIOS

Unidentified

Dimensions

Unidentified

I/O Options

Floppy drive interface, IDE interface, SCSI-2 interface, parallel port, PS/2 mouse interface, serial ports (2), cache slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

SCSI-2 interface

J1

Chassis fan power

J14

Speaker, keyboard, keylock ,reset

J3

IDE interface LED

J15

IDE interface

J4

PS/2 mouse interface

J19

Floppy drive interface

J5

Serial port 1

P1

Serial port 2

J6

Cache slots

SL1 & SL2

Parallel port

J11

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

SCSI termination enabled

J10

Open

 

SCSI termination disabled

J10

Closed

Ľ

Flash BIOS memory update enabled

J16

Pins 2 & 3 closed

 

Flash BIOS memory update disabled

J16

Pins 1 & 2 closed

 

SROM debugger

J17/pins 23 & 24

Open

 

Flash BIOS first image booted

J17/pins 25 & 26

Open

 

Flash BIOS firmware image booted

J17/pins 25 & 26

Closed

 

SROM test port

J18

Unidentified

 

SCSI controller enabled

J20

Pins 1 & 2 closed

 

SCSI controller disabled

J20

Pins 2 & 3 closed

Ľ

Factory configured - do not alter

JP1

Unidentified

SIMM CONFIGURATION

Size

Bank 0

8MB

(2) 1M x 36

16MB

(2) 2M x 36

32MB

(2) 4M x 36

64MB

(2) 8M x 36

128MB

(2) 16M x 36

CACHE CONFIGURATION

Note: The sizes of the cache modules and orientation are unidentified.

CACHE JUMPER CONFIGURATION

Size

J13/pins 1 & 2

J13/pins 3 & 4

J13/pins 5 & 6

J13/pins 7 & 8

None

Open

Open

Open

Open

512KB

Open

Open

Open

Open

2MB

Closed

Closed

Open

Open

CACHE JUMPER CONFIGURATION (CONíT)

Size

J17/pins 11 & 12

J17/pins 13 /& 14

J17/pins 15 & 16

None

Closed

Closed

Closed

512KB

Open

Closed

Closed

2MB

Open

Open

Closed

CACHE JUMPER CONFIGURATION (CONíT)

Size

J17/pins 17 & 18

J17/pins 19 & 20

J17/pins 21 & 22

512KB

Closed

Open

Open

2MB

Closed

Open

Open

CPU SPEED SELECTION

Speed

J17/pins 1 & 2

J17/pins 3 & 4

J17/pins 5 & 6

J17/pins 7 & 8

275MHz

Closed

Open

Open

Open

300MHz

Closed

Open

Open

Open