ALPHA XL Motherboard Settings and Configuration

DIGITAL EQUIPMENT CORPORATION

ALPHA XL

Processor
Alpha
Processor Speed
300/366/433MHz
Chip Set
Unidentified
Video Chip Set
None
Maximum Onboard Memory
512MB
Maximum Video Memory
None
Cache
Unidentified
BIOS
Unidentified
Dimensions
330mm x 218mm
I/O Options
32-bit PCI slots (3), CPU slot
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Unidentified
CN1
Unidentified
CN4
Unidentified
CN2
32-bit PCI slots
PC1 – PC3
Unidentified
CN3
CPU slot
SL1

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
SCSI autosense enabled
J21
Pins 1 & 2 closed

SCSI autosense & termination disabled
J21
Pins 2 & 3 closed
»
CMOS memory normal operation
J22
Pins 1 & 2 closed

CMOS memory clear
J22
Pins 2 & 3 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
32MB
(4) 2M x 36
None
64MB
(4) 2M x 36
(4) 2M x 36
64MB
(4) 4M x 36
None
96MB
(4) 4M x 36
(4) 2M x 36
128MB
(4) 4M x 36
(4) 4M x 36
128MB
(4) 8M x 36
None
160MB
(4) 8M x 36
(4) 2M x 36
192MB
(4) 8M x 36
(4) 4M x 36
256MB
(4) 8M x 36
(4) 8M x 36
256MB
(4) 16M x 36
None
288MB
(4) 16M x 36
(4) 2M x 36
320MB
(4) 16M x 36
(4) 4M x 36
384MB
(4) 16M x 36
(4) 8M x 36
512MB
(4) 16M x 36
(4) 16M x 36

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Factory configured – do not alter
J5
Open
»
Factory configured – do not alter
J6
Open
»
Flash BIOS write enabled
J15
Pins 2 & 3 closed

Flash BIOS write disabled
J15
Pins 1 & 2 closed
»
Console select primary
J17
Pins 2 & 3 closed

Console select alternate
J17
Pins 1 & 2 closed
»
Console secure disabled
J18
Pins 2 & 3 closed

Console secure enabled
J18
Pins 1 & 2 closed

SROM PROGRAM SELECTION
Speed
J2
J3
J7
J9
J10
J11
»
Power up enabled
Open
Open
Open
Open
Open
Closed

MCHK mini console
Open
Closed
Open
Open
Open
Open

MFG mem test
Open
Open
Closed
Open
Open
Open

Failsafe floppy
Open
Open
Open
Closed
Open
Open

No init mini-console
Closed
Open
Open
Open
Open
Open

Mini console
Open
Open
Open
Open
Closed
Open

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Console secure disabled
J9
Pins 2 & 3 closed

Console secure enabled
J9
Pins 1 & 2 closed
»
Console select primary
J10
Pins 2 & 3 closed

Console select alternate
J10
Pins 1 & 2 closed
»
Factory configured – do not alter
J15
Open
»
Factory configured – do not alter
J16
Open
»
Flash BIOS write enabled
J18
Pins 2 & 3 closed

Flash BIOS write disabled
J18
Pins 1 & 2 closed

SROM PROGRAM SELECTION
Speed
J11
J12
J13
J14
J17
J19
»
Power up enabled
Closed
Open
Open
Open
Open
Open

Mini console
Open
Closed
Open
Open
Open
Open

Failsafe floppy
Open
Open
Closed
Open
Open
Open

MFG mem test
Open
Open
Open
Closed
Open
Open

MCHK mini console
Open
Open
Open
Open
Closed
Open

No init mini-console
Open
Open
Open
Open
Open
Closed

CPU SPEED SELECTION
Speed
SW1/1
SW1/2
SW1/3
SW1/4
SW2/1
SW2/2
SW2/3
SW2/4
366MHz
Off
On
Off
Off
Off
Off
On
Off
433MHz
Off
Off
On
Off
On
Off
Off
On

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ALPHA XL Motherboard Settings and Configuration

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Processor	Alpha
Processor Speed	300/366/433MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	512MB
Maximum Video Memory	None
Cache	Unidentified
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	32-bit PCI slots (3), CPU slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Unidentified	CN1	Unidentified	CN4
Unidentified	CN2	32-bit PCI slots	PC1 – PC3
Unidentified	CN3	CPU slot	SL1

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	SCSI autosense enabled	J21	Pins 1 & 2 closed
	SCSI autosense & termination disabled	J21	Pins 2 & 3 closed
»	CMOS memory normal operation	J22	Pins 1 & 2 closed
	CMOS memory clear	J22	Pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
32MB	(4) 2M x 36	None
64MB	(4) 2M x 36	(4) 2M x 36
64MB	(4) 4M x 36	None
96MB	(4) 4M x 36	(4) 2M x 36
128MB	(4) 4M x 36	(4) 4M x 36
128MB	(4) 8M x 36	None
160MB	(4) 8M x 36	(4) 2M x 36
192MB	(4) 8M x 36	(4) 4M x 36
256MB	(4) 8M x 36	(4) 8M x 36
256MB	(4) 16M x 36	None
288MB	(4) 16M x 36	(4) 2M x 36
320MB	(4) 16M x 36	(4) 4M x 36
384MB	(4) 16M x 36	(4) 8M x 36
512MB	(4) 16M x 36	(4) 16M x 36

SROM PROGRAM SELECTION
Speed		J2	J3	J7	J9	J10	J11
»	Power up enabled	Open	Open	Open	Open	Open	Closed
	MCHK mini console	Open	Closed	Open	Open	Open	Open
	MFG mem test	Open	Open	Closed	Open	Open	Open
	Failsafe floppy	Open	Open	Open	Closed	Open	Open
	No init mini-console	Closed	Open	Open	Open	Open	Open
	Mini console	Open	Open	Open	Open	Closed	Open

CPU SPEED SELECTION
Speed	SW1/1	SW1/2	SW1/3	SW1/4	SW2/1	SW2/2	SW2/3	SW2/4
366MHz	Off	On	Off	Off	Off	Off	On	Off
433MHz	Off	Off	On	Off	On	Off	Off	On