UNIDENTIFIED
401 386SX
| Processor | 80386SX | 
| Processor Speed | 16MHz | 
| Chip Set | VLSI | 
| Max. Onboard DRAM | 8MB | 
| Cache | None | 
| BIOS | Award | 
| Dimensions | 330mm x 218mm | 
| I/O Options | None | 
| NPU Options | 80387SX | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Power LED & keylock | JP1 | Turbo switch | JP15 | 
| Speaker | JP2 | External battery | JP18 | 
| Reset switch | JP3 or JP17 | Turbo LED | JP20 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position | |
| » | NPU mode select synchronous with CPU | JP4 | Open | 
| NPU mode select synchronous with oscillator installed at X1 | JP4 | Closed | |
| » | Factory configured - do not alter | JP5 | N/A | 
| » | Factory configured - do not alter | JP8 | pins 2 & 3 closed | 
| » | Factory configured - do not alter | JP9 | N/A | 
| » | Monitor type select color | JP10 | pins 1 & 2 closed | 
| Monitor type select monochrome | JP10 | pins 2 & 3 closed | |
| » | Factory configured - do not alter | JP11 | Open | 
| » | Factory configured - do not alter | JP12 | Open | 
| » | Factory configured - do not alter | JP13 | Closed | 
| » | Factory configured - do not alter | JP14 | Open | 
| » | BIOS type select 27256 | JP16 | pins 2 & 3 closed | 
| BIOS type select 27512 | JP16 | pins 1 & 2 closed | |
| DRAM CONFIGURATION | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 512KB | (18) 41256 | NONE | NONE | NONE | 
| 512KB | NONE | NONE | (2) 256K x 9 | NONE | 
| 1MB | (18) 41256 | (18) 41256 | NONE | NONE | 
| 1MB | NONE | NONE | (2) 256K x 9 | (2) 256K x 9 | 
| 2MB | (18) 411000 | NONE | NONE | NONE | 
| 2MB | NONE | NONE | (2) 1M x 9 | NONE | 
| 4MB | (18) 411000 | (18) 411000 | NONE | NONE | 
| 4MB | NONE | NONE | (2) 1M x 9 | (2) 1M x 9 | 
| 5MB | (18) 411000 | (18) 411000 | (2) 256K x 9 | (2) 256K x 9 | 
| 6MB | (18) 411000 | (18) 411000 | (2) 1M x 9 | NONE | 
| 8MB | (18) 411000 | (18) 411000 | (2) 1M x 9 | (2) 1M x 9 | 
| DRAM JUMPER CONFIGURATION | |||||
| DRAM mode | Max. Pages | Wait States | DRAM speed | JP6 | JP7 | 
| F4 | 4 | 0 or 1 | 80ns | 2 & 3 | 2 & 3 | 
| F1 | 1 | 0 or 1 | 100ns | 1 & 2 | 2 & 3 | 
| W01 | 4 | 1 or 2 | 100ns | 2 & 3 | 1 & 2 | 
| W02 | 4 | 2 or 3 | 120ns | 1 & 2 | 1 & 2 | 
| Note: Pins designated should be in the closed position. | |||||