TANDON CORPORATION
PCA/12
| Processor | 80286 | 
| Processor Speed | 12MHz | 
| Chip Set | Unidentified | 
| Max. Onboard DRAM | 4MB | 
| Cache | None | 
| BIOS | Unidentified | 
| Dimensions | 254mm x 220mm | 
| I/O Options | Parallel port, serial ports (2), floppy drive interface, IDE interface | 
| NPU Options | 80287 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| External battery | J7 | IDE interface | J13 | 
| Speaker | J9 | Serial port 2 | J14 | 
| Reset switch | J10 | Serial port 1 | J15 | 
| Parallel port | J11 | Floppy drive interface | J16 | 
| IDE interface LED | J12 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper/Switch | Position | |
| » | High speed clock disabled | E1 | Closed | 
| High speed clock enabled | E1 | Open | |
| » | NPU disabled | E2 | pins 1 & 2 open | 
| NPU enabled | E2 | pins 1 & 2 closed | |
| » | Factory configured - do not alter | E3 | pins 2 & 3 closed | 
| » | 256KB - 512KB memory enabled | SW1/1 | Off | 
| 256KB - 512KB memory disabled | SW1/1 | On | |
| » | 512KB - 640KB memory enabled | SW1/2 | Off | 
| 512KB - 640KB memory disabled | SW1/2 | On | |
| » | Security enabled | SW1/3 | Off | 
| Security disabled | SW1/3 | On | |
| » | Factory configured - do not alter | SW1/4 | Off | 
| Note: The location of E3 is unidentified. | |||
| DRAM CONFIGURATION | ||
| Size | Bank 0 | Bank 1 | 
| 512KB | (2) 256K x 9 | NONE | 
| 1MB | (2) 256K x 9 | (2) 256K x 9 | 
| 2MB | (2) 1M x 9 | NONE | 
| 4MB | (2) 1M x 9 | (2) 1M x 9 |