UNIDENTIFIED
386XM-20/OP
Processor | 80386SX |
Processor Speed | 20/25MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 8MB |
Cache | 16/32/64KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80387SX |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J1 | Turbo LED | JP8 |
Speaker | J21 | Reset switch | S2 |
Power LED & keylock | J22 | Turbo switch | S3 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CMOS memory normal operation | JP1 | pins 2 & 3 closed |
CMOS memory clear | JP1 | pins 1 & 2 closed | |
» | Monitor type select monochrome | JP2 | Open |
Monitor type select color | JP2 | Closed |
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 |
CACHE CONFIGURATION | ||
Size | Bank 0 | TAG |
16KB | (4) 16K x 1 | (2) 4K x 4 |
32KB | (4) 4K x 1 | (2) 4K x 4 |
64KB | (4) 32K x 1 | (2) 4K x 4 |
CACHE JUMPER CONFIGURATION | |||||
Size | JP3 | JP4 | JP5 | JP6 | JP7 |
16KB | 1 & 2 | 1 & 2 | 1 & 2 | Open | Open |
32KB | 2 & 3 | 1 & 2 | 1 & 2 | Closed | Open |
64KB | 2 & 3 | 2 & 3 | 2 & 3 | Open | Closed |
Note: Pins designated should be in the closed position. |