UNIDENTIFIED
386SX-20/25
Processor | 80386SX |
Processor Speed | 20/25MHz |
Chip Set | Headland |
Max. onboard DRAM | 8MB |
Cache | None |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80387SX |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | JP3 | Turbo Switch | JP11 |
Power LED & keylock | JP9 | Speaker | JP12 |
Turbo LED | JP10 | Reset | JP13 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP2 | Closed |
Monitor type select monochrome | JP2 | Open |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
512KB | (2) 256K x 9 | NONE | NONE | NONE |
1MB | (2) 256K x 9 | (2) 256K x 9 | NONE | NONE |
1.5MB | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 | NONE |
2MB | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 |
2MB | (2) 1M x 9 | NONE | NONE | NONE |
3MB | (2) 256K x 9 | (2) 256K x 9 | (2) 1M x 9 | NONE |
4MB | (2) 1M x 9 | (2) 1M x 9 | NONE | NONE |
4.5MB | (2) 1M x 9 | (2) 1M x 9 | (2) 256K x 9 | NONE |
5MB | (2) 1M x 9 | (2) 1M x 9 | (2) 256K x 9 | (2) 256K x 9 |
6MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | NONE |
8MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
PIPELINE MODE CONFIGURATION | ||||
Mode | CPU Speed | JP5 | JP6 | JP7 |
Enabled | 20 or 25MHz | pins 2 & 3 closed | pins 1 & 2 closed | pins 2 & 3 closed |
Disabled | 20mhz only | pins 1 & 2 closed | pins 2 & 3 closed | pins 1 & 2 closed |