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 |