UNIDENTIFIED
386 CACHE MAINBOARD
Processor | 80386DX |
Processor Speed | 33/40MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 32MB |
Cache | 64/128/256KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80387DX/3167 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED & keylock | J17 | External battery | J20 |
Speaker | J18 | Turbo switch | J21 |
Reset switch | J19 | Turbo LED | J22 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select monochrome | JP3 | Open |
Monitor type select color | JP3 | Closed | |
» | CMOS memory normal operation | JP5 | pins 1 & 2 closed |
CMOS memory clear | JP5 | pins 2 & 3 closed | |
» | Factory configured - do not alter | JP6 | Open |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (4) 256K x 9 | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
20MB | (4) 1M x 9 | (4) 4M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | |||||
Size | J2 | J3 | J4 | J5 | J6 |
64KB | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
128KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
Note: Pins designated should be in the closed position. |
CPU SPEED CONFIGURATION | |||
Speed | JP24 | JP25 | JP26 |
33MHz | Closed | Closed | Open |
40MHz | Open | Open | Closed |