UNIDENTIFIED
386SX25/20/16
Processor | 80386SX |
Processor Speed | 16/20/25MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 16MB |
Cache | None |
BIOS | AMI |
Dimensions | 223mm x 218mm |
I/O Options | None |
NPU Options | 80387SX |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | JP2 | Reset switch | JP10 |
Speaker | JP8 | Turbo switch | JP11 |
Power LED & keylock | JP9 | Turbo LED | JP12 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select monochrome | JP1 | Open |
Monitor type select color | JP1 | Closed | |
» | CMOS memory normal operation | JP3 | pins 2 & 3 closed |
CMOS memory clear | JP3 | pins 1 & 2 closed |
DRAM CONFIGURATION | ||||||
Size | Bank 0 | Bank 1 | Bank 2 | Parity (P-2) | Bank 3 | Parity (P-3) |
1MB | (2) 256K x 9 | (2) 256K x 9 | NONE | NONE | NONE | NONE |
1MB | NONE | NONE | (4) 44256 | (2) 41256 | (4) 44256 | (2) 41256 |
2MB | (2) 256K x 9 | (2) 256K x 9 | (4) 44256 | (2) 41256 | (4) 44256 | (2) 41256 |
3MB | (2) 256K x 9 | (2) 256K x 9 | (4) 441000 | (2) 411000 | NONE | NONE |
3MB | (2) 1M x 9 | NONE | (4) 44256 | (2) 41256 | (4) 44256 | (2) 41256 |
4MB | (2) 1M x 9 | (2) 1M x 9 | NONE | NONE | NONE | NONE |
4MB | NONE | NONE | (4) 441000 | (2) 411000 | (4) 441000 | (2) 411000 |
5MB | (2) 1M x 9 | (2) 1M x 9 | (4) 44256 | (2) 41256 | (4) 44256 | (2) 41256 |
5MB | (2) 256K x 9 | (2) 256K x 9 | (4) 441000 | (2) 411000 | (4) 441000 | (2) 411000 |
6MB | (2) 1M x 9 | (2) 1M x 9 | (4) 441000 | (2) 411000 | NONE | NONE |
6MB | (2) 1M x 9 | NONE | (4) 441000 | (2) 411000 | (4) 441000 | (2) 411000 |
8MB | (2) 1M x 9 | (2) 1M x 9 | (4) 441000 | (2) 411000 | (4) 441000 | (2) 411000 |
10MB | (2) 1M x 9 | (2) 4M x 9 | NONE | NONE | NONE | NONE |
12MB | (2) 4M x 9 | NONE | (4) 441000 | (2) 411000 | (4) 441000 | (2) 411000 |
16MB | (2) 4M x 9 | (2) 4M x 9 | NONE | NONE | NONE | NONE |
DRAM JUMPER CONFIGURATION | ||||||
Size | JP4 | JP5 | JP6 | JP7 | JP8 | JP9 |
1MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
1MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
2MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
3MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
3MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
4MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
4MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
5MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
5MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
6MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
6MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
8MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
10MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
12MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
16MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
Note:Pins designated should be in the closed position. |