UNIDENTIFIED
386/25 CACHE
| Processor | 80386SX | 
| Processor Speed | 25MHz | 
| Chip Set | OPTI | 
| Max. Onboard DRAM | 16MB | 
| Cache | 32/64KB (location unidentified) | 
| BIOS | AMI | 
| Dimensions | 330mm x 220mm | 
| I/O Options | Memory card | 
| NPU Options | 80387SX/3167 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| External battery | J1 | Turbo switch | J14 (pins 7 & 8) | 
| Speaker | J14 (pins 1 - 4) | Power LED & keylock | J15 | 
| Reset switch | J14 (pins 5 & 6) | External memory card | S1 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position | |
| » | Battery type select external | J1 | Closed | 
| Battery type select internal | J1 | pins 2 & 3 closed | |
| Monitor type select color | J2 | Closed | |
| Monitor type select monochrome | J2 | Open | |
| » | Factory configured - do not alter | J4 | pins 2 & 3 closed | 
| » | Factory configured - do not alter | J10 | pins 1 & 2 closed | 
| » | Factory configured - do not alter | J11 | pins 1 & 2 closed | 
| 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 | 
| 2.5MB | (2) 256K x 9 | (2) 1M x 9 | NONE | NONE | 
| 2.5MB | (2) 1M x 9 | (2) 256K x 9 | NONE | NONE | 
| 3MB | (2) 256K x 9 | (2) 256K x 9 | (2) 1M x 9 | NONE | 
| 3MB | (2) 256K x 9 | (2) 1M x 9 | (2) 256K x 9 | NONE | 
| 3MB | (2) 1M x 9 | (2) 256K x 9 | (2) 256K x 9 | NONE | 
| 3.5MB | (2) 256K x 9 | (2) 256K x 9 | (2) 1M x 9 | (2) 256K x 9 | 
| 3.5MB | (2) 256K x 9 | (2) 1M x 9 | (2) 256K x 9 | (2) 256K x 9 | 
| 3.5MB | (2) 1M x 9 | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 | 
| 4MB | (2) 1M x 9 | (2) 1M x 9 | NONE | NONE | 
| 4.5MB | (2) 256K x 9 | (2) 1M x 9 | (2) 1M x 9 | NONE | 
| 4.5MB | (2) 1M x 9 | (2) 1M x 9 | (2) 256K x 9 | NONE | 
| 4.5MB | (2) 1M x 9 | (2) 256K x 9 | (2) 1M x 9 | NONE | 
| 5MB | (2) 256K x 9 | (2) 256K x 9 | (2) 1M x 9 | (2) 1M x 9 | 
| 5MB | (2) 256K x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 256K x 9 | 
| 5MB | (2) 1M x 9 | (2) 1M x 9 | (2) 256K x 9 | (2) 256K x 9 | 
| 10MB | (2) 1M x 9 | (2) 256K x 9 | (2) 1M x 9 | (2) 256K x 9 | 
| 6.5MB | (2) 256K x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | 
| 6.5MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 256K x 9 | 
| 6.5MB | (2) 1M x 9 | (2) 256K x 9 | (2) 1M x 9 | (2) 1M x 9 | 
| 8MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | 
| CACHE CONFIGURATION | |||
| Size | Bank 0 | Bank 1 | TAG | 
| 32KB | (4) 8K x 8 | NONE | (1) 8K x 8 | 
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | 
| Note: The location of CACHE is unidentified. | |||
| CACHE JUMPER CONFIGURATION | |||
| Size | J5 | J8 | J9 | 
| 32KB | pins 1 & 2 closed | Open | pins 1 & 2 closed | 
| 64KB | pins 2 & 3 closed | Closed | pins 2 & 3 closed | 
| CACHE MEMORY LINE CONFIGURATION | ||
| Size | J6 | J7 | 
| 4 Bytes | Closed | pins 1 & 2 closed | 
| 8 Bytes | Closed | pins 2 & 3 closed | 
| 16 Bytes | Open | pins 2 & 3 closed | 
| BIOS ROM TYPE CONFIGURATION | |
| TYPE | J3 | 
| 32Kb x 8 | pins 2 & 3 closed | 
| 64KB x 8 | pins 1 & 2 closed |