UNIDENTIFIED
386SI4
| Processor | 80386DX/CX486DLC | 
| Processor Speed | 33/40MHz | 
| Chip Set | C & T | 
| Max. Onboard DRAM | 32MB | 
| SRAM Cache | 64/128/256KB | 
| BIOS | AMI | 
| Dimensions | 254mm x 218mm | 
| I/O Options | None | 
| NPU Options | 80387/CX83D87/3167 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Turbo LED | J3 | Reset switch | J6 | 
| Turbo switch | J4 | Power LED & keylock | J7 | 
| Speaker | J5 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position | |
| » | Factory configured - do not alter | JP1 | open | 
| » | Monitor type select color | JP2 | closed | 
| Monitor type select monochrome | JP2 | open | |
| DRAM CONFIGURATION | |||
| Size | Bank 0 | Bank 1 | JP11 | 
| 1MB | (4) 256K x 9 | NONE | pins 2 & 3 closed | 
| 2MB | (4) 256K x 9 | (4) 256K x 9 | pins 1 & 2 closed | 
| 4MB | (4) 1M x 9 | NONE | pins 2 & 3 closed | 
| 5MB | (4) 1M x 9 | (4) 256K x 9 | pins 2 & 3 closed | 
| 8MB | (4) 1M x 9 | (4) 1M x 9 | pins 1 & 2 closed | 
| 16MB | (4) 4M x 9 | NONE | pins 2 & 3 closed | 
| 17MB | (4) 4M x 9 | (4) 256K x 9 | pins 2 & 3 closed | 
| 20MB | (4) 4M x 9 | (4) 1M x 9 | pins 2 & 3 closed | 
| 32MB | (4) 4M x 9 | (4) 4M x 9 | pins 1 & 2 closed | 
| SRAM JUMPER CONFIGURATION | |||
| Jumper | 64KB | 128KB | 256KB | 
| SR1 | pins 1 & 2 closed | pins 2 & 3 closed | pins 2 & 3 closed | 
| SR2 | pins 1 & 2 closed | pins 2 & 3 closed | pins 2 & 3 closed | 
| SR3 | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed | 
| SR4 | pins 2 & 3 closed | pins 1 & 2 closed | pins 2 & 3 closed | 
| SR5 | pins 2 & 3 closed | pins 1 & 2 closed | pins 2 & 3 closed | 
| SR6 | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed | 
| SR7 | pins 1 & 2 closed | pins 2 & 3 closed | pins 2 & 3 closed | 
| SR8 | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed | 
| SR9 | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed | 
| SRAM CONFIGURATION | |||
| Size | Cache SRAM | Location | TAG | 
| 64KB | (8) 8K x 8 | Banks 0 & 1 | (1) 8K x 8 | 
| 128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 | 
| 256KB | (8) 32K x 8 | Banks 0 & 1 | (1) 8K x 8 |