DIGITAL EQUIPMENT CORPORATION
ALPHAPC 164
|
Processor |
Alpha |
|
Processor Speed |
300/333/366/400/433MHz |
|
Chip Set |
Digital |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
512MB |
|
Maximum Video Memory |
None |
|
Cache |
1024KB |
|
BIOS |
Unidentified |
|
Dimensions |
305mm x 244mm |
|
I/O Options |
32-bit PCI slots (2), 64-bit PCI slots (2), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Chassis fan power |
J2 |
Chassis fan power |
J22 |
|
Power connector |
J3 |
Speaker |
J23 |
|
Serial port 1 |
J4 |
Reset switch |
J24 |
|
Serial port 2 |
J4A |
Halt connector |
J25 |
|
IDE interface 2 |
J13 |
Power LED & keylock |
J27 |
|
IDE interface 1 |
J14 |
IDE interface LED |
J28 |
|
PS/2 mouse port |
J15 |
SROM test port |
J32 |
|
Parallel port |
J16 |
32-bit PCI slots |
PC1 & PC2 |
|
Floppy drive interface |
J18 |
64-bit PCI slots |
SL1 & SL2 |
|
Chassis fan power |
J21 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
Factory configured - do not alter |
J30 pins 9 & 10 |
Open |
|
|
Factory configured - do not alter |
J30 pins 15 & 16 |
Open |
|
|
Mini debugger disabled |
J30 pins 21 & 22 |
Open |
|
Mini debugger enabled |
J30 pins 21 & 22 |
Closed | |
|
|
Boot option select Windows NT ARC firmware loaded |
J30 pins 23 & 24 |
Open |
|
Boot option select fail safe boot loaded |
J30 pins 23 & 24 |
Closed | |
|
|
Jumper not used |
J30 pins 25 & 26 |
N/A |
|
|
Flash BIOS update enabled |
J31 |
Pins 2 & 3 closed |
|
Flash BIOS update disabled |
J31 |
Pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
16MB |
(4) 1M x 36 |
None |
|
32MB (A) |
(4) 1M x 36 |
(4) 1M x 36 |
|
32MB (B) |
(4) 2M x 36 |
None |
|
64MB (A) |
(4) 2M x 36 |
(4) 2M x 36 |
|
64MB (B) |
(4) 4M x 36 |
None |
|
128MB (A) |
(4) 4M x 36 |
(4) 4M x 36 |
|
128MB (B) |
(4) 8M x 36 |
None |
|
256MB (A) |
(4) 8M x 36 |
(4) 8M x 36 |
|
256MB (B) |
(4) 16M x 36 |
None |
|
512MB (B) |
(4) 16M x 36 |
(4) 16M x 36 |
|
DRAM JUMPER CONFIGURATION | |
|
Size |
J1 |
|
16MB |
Closed |
|
32MB (A) |
Open |
|
32MB (B) |
Closed |
|
64MB (A) |
Open |
|
64MB (B) |
Closed |
|
128MB (A) |
Open |
|
128MB (B) |
Closed |
|
256MB (A) |
Open |
|
256MB (B) |
Closed |
|
512MB (B) |
Open |
|
CACHE CONFIGURATION |
|
Note: Board can be installed with either 1MB or 2MB of cache. The size of the chips is unidentified. |
|
CACHE JUMPER CONFIGURATION | |
|
Size |
J30 |
|
1MB |
Pins 11 & 12, 13 & 14 open |
|
2MB |
Pins 11 & 12 open, 13 & 14 closed |
|
CACHE SPEED CONFIGURATION | |
|
Speed |
J30 |
|
9ns |
Pins 17 & 18, 19 & 20 open |
|
CPU SPEED SELECTION | |
|
Speed |
J30 |
|
300MHz |
Pins 3 & 4, 5 & 6 closed |
|
333MHz |
Pins 3 & 4, 7 & 8 closed |
|
366MHz |
Pins 3 & 4 closed |
|
400MHz |
Pins 5 & 6, 7 & 8 closed |
|
433MHz |
Pins 5 & 6 closed |