TANDY/RADIO SHACK
3000HD (DISCRETE VERSION)
| 
 Processor  | 
 80286  | 
| 
 Processor Speed  | 
 8MHz  | 
| 
 Chip Set  | 
 C & T  | 
| 
 Video Chip Set  | 
 None  | 
| 
 Maximum Onboard Memory  | 
 640KB  | 
| 
 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 1 & 2 closed  | 
| 
 Monitor type select color  | 
 J1  | 
 Pins 2 & 3 closed  | |
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 512KB  | 
 (18) 41256  | 
 None  | 
| 
 640KB  | 
 (18) 41256  | 
 (18) 4164  | 
| 
 Note: The location of banks 0 & 1 are unidentified.  | ||
| 
 DRAM JUMPER CONFIGURATION  | |
| 
 Size  | 
 J2  | 
| 
 512KB  | 
 Open  | 
| 
 640KB  | 
 Closed  | 
| 
 BIOS SELECTION  | ||||
| 
 Type  | 
 J3  | 
 J4  | 
 J5  | 
 J6  | 
| 
 27128  | 
 Closed  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 27256 (not used)  | 
 Open  | 
 Open  | 
 Closed  | 
 Closed  |