SB21064 Motherboard Settings and Configuration

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
»
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
»
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 (CON’T)
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 (CON’T)
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

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SB21064 Motherboard Settings and Configuration

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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
»	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
»	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 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 (CON’T)
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 (CON’T)
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