DIGITAL EQUIPMENT CORPORATION
ALPHAPC64
Processor | Alpha |
Processor Speed | 200/233/275MHz |
Chip Set | DEC |
Video Chip Set | None |
Maximum Onboard Memory | 512MB |
Maximum Video Memory | None |
Cache | 512/1024/2048/4096/8192KB |
BIOS | Unidentified |
Dimensions | 330mm x 221mm |
I/O Options | 32-bit PCI slots (4), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), cache slots (2) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Chassis fan power | J1 | IDE interface | J26 |
Chassis fan power | J14 | Serial port 2 | J30 |
Reset switch | J3/pins 28 & 30 | Serial port 1 | J32 |
IDE interface LED | J3/pins 29 & 31 | PS/2 mouse port | J34 |
Power LED & keylock | J3/pins 32,34,36,38,40 | 32-bit PCI slots | PC1 – PC4 |
Speaker | J3/pins 33, 35, 37, 39 | Cache slot | SL1 |
Floppy drive interface | J24 | Cache slot | SL2 |
Parallel port | J25 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | SROM test connector | J2 | N/A |
» | Flash BIOS update disabled | J16 | Pins 2 & 3 closed |
Flash BIOS update enabled | J16 | Pins 1 & 2 closed |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
16MB | (2) 512K x 36 | (2) 512K x 36 | (2) 512K x 36 | (2) 512K x 36 |
16MB | (2) 1M x 36 | (2) 1M x 36 | None | None |
24MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 | None |
32MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 |
32MB | (2) 4M x 36 | None | None | None |
64MB | (2) 4M x 36 | (2) 4M x 36 | None | None |
64MB | (2) 8M x 36 | None | None | None |
96MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 | None |
128MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 |
128MB | (2) 8M x 36 | (2) 8M x 36 | None | None |
128MB | (2) 16M x 36 | None | None | None |
192MB | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 | None |
256MB | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 |
256MB | (2) 16M x 36 | (2) 16M x 36 | None | None |
384MB | (2) 16M x 36 | (2) 16M x 36 | (2) 16M x 36 | None |
512MB | (2) 16M x 36 | (2) 16M x 36 | (2) 16M x 36 | (2) 16M x 36 |
CACHE CONFIGURATION | ||
Size | SL1 | SL2 |
512KB | 256KB | 256KB |
2MB | 1MB | 1MB |
8MB | 4MB | 4MB |
Note: The sizes of the cache modules are unidentified. |
CACHE JUMPER CONFIGURATION | |||
Size | J3/pins 11 & 12 | J3/pins 13 & 14 | J3/pins 15 & 16 |
None | Closed | Closed | Closed |
512KB | Open | Closed | Closed |
1MB | Closed | Open | Closed |
2MB | Open | Open | Closed |
4MB | Closed | Closed | Open |
8MB | Open | Closed | Open |
CACHE ADDRESS CONFIGURATION | ||||
Size | J15/pins 1 & 2 | J3/pins 3 & 4 | J3/pins5 & 6 | J3/pins7 & 8 |
512KB | Open | Open | Open | Open |
1MB | Closed | Open | Open | Open |
2MB | Closed | Closed | Open | Open |
4MB | Closed | Closed | Closed | Open |
8MB | Closed | Closed | Closed | Closed |
CACHE SPEED CONFIGURATION | |||
Speed | J3/pins 17 & 18 | J3/pins 19 & 20 | J3/pins 21 & 22 |
6ns | Open | Closed | Closed |
8ns | Closed | Open | Closed |
10ns | Open | Open | Closed |
12ns | Closed | Closed | Open |
15ns | Open | Closed | Open |
CPU DIVISOR SELECTION | ||||
Divisor | J3/pins 1 & 2 | J3/pins 3 & 4 | J3/pins 5 & 6 | J3/pins 7 & 8 |
2 | Closed | Closed | Closed | Closed |
3 | Closed | Closed | Closed | Open |
4 | Closed | Closed | Open | Closed |
5 | Closed | Closed | Open | Open |
6 (200MHz) | Closed | Open | Closed | Closed |
7 (233MHz) | Closed | Open | Closed | Open |
8 | Closed | Open | Open | Closed |
9 (275MHz) | Closed | Open | Open | Open |
10 | Open | Closed | Closed | Closed |
11 | Open | Closed | Closed | Open |
12 | Open | Closed | Open | Closed |
13 | Open | Closed | Open | Open |
14 | Open | Open | Closed | Closed |
15 | Open | Open | Closed | Open |
16 | Open | Open | Open | Closed |
17 | Open | Open | Open | Open |