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 |