TANDY/RADIO SHACK
3000HD (GATE ARRAY VERSION)
| Processor | 80286 | 
| Processor Speed | 8MHz | 
| Chip Set | C & T | 
| Video Chip Set | None | 
| Maximum Onboard Memory | 1MB | 
| Maximum Video Memory | None | 
| Cache | None | 
| BIOS | Unidentified | 
| Dimensions | 462mm x 458mm | 
| I/O Options | None | 
| NPU Options | 80287 | 
 
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Monitor type select monochrome | J1 | Pins 2 & 3 closed | 
| Monitor type select color | J1 | Pins 1 & 2 closed | |
| DRAM CONFIGURATION | ||
| Size | Bank 0 | Bank 1 | 
| 512KB | (18) 41256 | None | 
| 640KB | (18) 41256 | (18) 4164 | 
| 1MB | (18) 41256 | (18) 41256 | 
| Note: The location of banks 0 & 1 are unidentified. | ||
| DRAM JUMPER CONFIGURATION | ||
| Size | J2 | J3 | 
| 512KB | Closed | Open | 
| 640KB | Open | Closed | 
| 1MB | Open | Open | 
| BIOS SELECTION | ||||
| Type | J4 | J5 | J6 | J7 | 
| 16KB | Closed | Open | Closed | Open | 
| 32KB (not used) | Open | Closed | Open | Closed |