UNIDENTIFIED
80386SX MOTHERBOARD
Processor | 80386SX |
Processor Speed | 16MHz |
Chip Set | NEAT |
Max. Onboard DRAM | 8MB |
Cache | None |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80387SX |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED & keylock | J1 | Reset switch | J4 |
Speaker | J2 | Turbo LED | J5 |
Turbo switch | J3 | External battery | J6 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Turbo enabled | J3 | pins 1 & 2 closed |
Turbo disabled | J3 | pins 2 & 3 closed | |
» | Battery type select internal | J6 | pins 1 & 2 closed |
Battery type select external | J6 | Closed | |
CMOS memory clear | J6 | pins 3 & 4 closed | |
» | Pipeline enabled | JP3 | Closed |
Pipeline disabled | JP3 | Open | |
» | NPU asynchronous with CPU | JP4 | Closed |
NPU synchronous with CPU | JP4 | Open | |
NPU enabled | JP5 | Closed | |
NPU disabled | JP5 | Open | |
» | Clock select 80386SX clock 2 | JP6 | pins 2 & 3 closed |
Clock select 80387SX clock 2 | JP6 | pins 1 & 2 closed | |
» | BIOS type select 27256 | JP7 | pins 1 & 2 closed |
BIOS type select 27128 | JP7 | pins 2 & 3 closed | |
» | Monitor type select monochrome | JP8 | pins 2 & 3 closed |
Monitor type select color/EGA/VGA | JP8 | pins 1 & 2 closed | |
» | BIOS pin select 23 pin | JP9 | pins 1 & 2 closed |
BIOS pin select 30 pin | JP9 | pins 2 & 3 closed |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
512KB | (2) 256K x 9 | NONE | NONE | NONE |
512KB | NONE | NONE | (18) 41256 | NONE |
1MB | (2) 256K x 9 | (2) 256K x 9 | NONE | NONE |
1MB | NONE | NONE | (18) 41256 | (18) 41256 |
1.5MB | (2) 256K x 9 | (2) 256K x 9 | (18) 41256 | NONE |
1.5MB | (2) 256K x 9 | NONE | (18) 41256 | (18) 41256 |
2MB | (2) 256K x 9 | (2) 256K x 9 | (18) 41256 | (18) 41256 |
2MB | (2) 1M x 9 | NONE | NONE | NONE |
2MB | NONE | NONE | (18) 411000 | (18) 411000 |
4MB | (2) 1M x 9 | (2) 1M x 9 | NONE | NONE |
4MB | (2) 1M x 9 | NONE | (18) 411000 | (18) 411000 |
5MB | (2) 1M x 9 | (2) 1M x 9 | (18) 41256 | (18) 41256 |
5MB | (2) 1M x 9 | (2) 1M x 9 | (18) 411000 | NONE |
5MB | (2) 1M x 9 | (2) 1M x 9 | (18) 41256 | (18) 41256 |
6MB | (2) 1M x 9 | (2) 1M x 9 | (18) 411000 | (18) 411000 |
6MB | (2) 1M x 9 | (2) 1M x 9 | (18) 411000 | (18) 411000 |
8MB | (2) 4M x 9 | (2) 4M x 9 | NONE | NONE |
DRAM JUMPER CONFIGURATION | ||
Size | JP1 | JP2 |
512KB | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 |
512KB | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 |
1MB | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 |
1MB | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 |
1.5MB | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 |
1.5MB | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 |
2MB | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 |
2MB | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 |
2MB | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 |
4MB | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 |
4MB | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 |
5MB | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 |
5MB | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 |
5MB | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 |
6MB | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 |
6MB | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 | 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8, 6 & 7 |
8MB | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 | 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12 |
Note: Pins designated should be in the closed position. |