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 |