DIGITAL EQUIPMENT CORPORATION
ALPHASERVER 300
|
Device Type |
Mainboard |
|
Processor |
Alpha |
|
Processor Speed |
266MHz |
|
Chip Set |
Unidentified |
|
Maximum Onboard Memory |
512MB |
|
Cache |
2MB |
|
BIOS |
Unidentified |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
Floppy drive interface, SCSI interfaces (2), parallel port, PS/2 mouse port, serial ports (2), riser slot |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Service LED |
CN1 |
Serial port |
CN6 |
|
Service LED |
CN2 |
PS/2 mouse port |
CN7 |
|
SCSI interface |
CN3 |
SCSI interface |
CN8 |
|
Parallel port |
CN4 |
Floppy drive interface |
CN9 |
|
Serial port |
CN5 |
Riser slot |
SL1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
Console select main console |
J1 |
Pins 2 & 3 closed |
|
Console select mini console |
J1 |
Pins 1 & 2 closed | |
|
|
Boot up from flash BIOS |
J2 |
Pins 2 & 3 closed |
|
Boot up from floppy |
J2 |
Pins 1 & 2 closed | |
|
|
Reset switch select reset |
J3 |
Pins 1 & 2 closed |
|
Reset switch select halt interrupt request |
J3 |
Pins 2 & 3 closed | |
|
|
Flash BIOS write protect disabled |
J4 |
Pins 1 & 2 closed |
|
Flash BIOS write protect enabled |
J4 |
Pins 2 & 3 closed | |
|
|
Factory configured - do not alter |
J21 |
Open |
|
|
External SCSI cable sensing enabled |
J27 |
Open |
|
|
External SCSI cable sensing disabled |
J27 |
Closed |
|
SIMM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
16MB |
(4) 1M x 36 |
None |
|
32MB |
(4) 1M x 36 |
(4) 1M x 36 |
|
32MB |
(4) 2M x 36 |
None |
|
48MB |
(4) 2M x 36 |
(4) 1M x 36 |
|
64MB |
(4) 2M x 36 |
(4) 2M x 36 |
|
64MB |
(4) 4M x 36 |
None |
|
80MB |
(4) 4M x 36 |
(4) 1M x 36 |
|
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 |
|
272MB |
(4) 16M x 36 |
(4) 1M x 36 |
|
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 |
|
CACHE CONFIGURATION |
|
Note: The location of the cache is unidentified. |
|
CPU SPEED SELECTION | ||
|
Speed |
J7 |
J32 |
|
266Hz |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
I/O CHIP SELECTION | |||
|
Type |
J25 |
J26 | |
|
87332 |
Closed |
Closed | |
|
87312 |
Open |
Open | |