TANDY/RADIO SHACK
ENHANCED GRAPHICS ADAPTER (250-4037)
|
Card Type |
Video card |
|
Video Processor |
Unidentified |
|
Maximum Onboard Memory |
256KB DRAM |
|
I/O Options |
Light pen port |
|
Data Bus |
8-bit ISA |
|
Video Types Supported |
EGA |
|
Highest Resolution Supported |
640 x 350 |
|
CONNECTIONS | |||
|
Function |
Label |
Function |
Label |
|
Light pen port |
J5 |
9-pin video out |
P3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Setting |
Label |
Position | |
|
Factory configured - do not alter |
J4 |
Pins 2 & 3 closed | |
|
Factory configured - do not alter |
SW1/5 |
N/A | |
|
Factory configured - do not alter |
SW1/6 |
N/A | |
|
DISPLAY MODE SELECTION (EGA PRIMARY) | |||||
|
Primary |
Secondary |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
Monochrome |
None |
Off |
Off |
On |
Off |
|
Lo-res CGA |
None |
On |
Off |
Off |
On |
|
Hi-res CGA |
None |
Off |
Off |
Off |
On |
|
Lo-res EGA |
None |
On |
On |
On |
Off |
|
Hi-res EGA |
None |
Off |
On |
On |
Off |
|
None |
Monochrome |
Off |
On |
On |
On |
|
Lo-res CGA |
Monochrome |
On |
On |
On |
On |
|
Hi-res CGA |
Monochrome |
Off |
On |
On |
On |
|
Lo-res EGA |
Monochrome |
On |
On |
On |
On |
|
Hi-res EGA |
Monochrome |
Off |
Off |
On |
On |
|
Monochrome |
Lo-res CGA |
On |
Off |
On |
Off |
|
Monochrome |
Hi-res CGA |
Off |
Off |
On |
Off |
|
DISPLAY MODE SELECTION (EGA SECONDARY) | |||||
|
Primary |
Secondary |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
Monochrome |
None |
Off |
On |
On |
On |
|
Monochrome |
Lo-res CGA |
On |
On |
On |
On |
|
Monochrome |
Hi-res CGA |
Off |
On |
On |
On |
|
Monochrome |
Lo-res EGA |
On |
Off |
On |
On |
|
Monochrome |
Hi-res EGA |
Off |
Off |
On |
On |
|
Lo-res CGA |
Monochrome |
On |
On |
Off |
On |
|
Hi-res CGA |
Monochrome |
Off |
On |
Off |
On |
|
MONITOR TYPE SELECTION | |||
|
Setting |
J2 |
SW1/7 |
SW1/8 |
|
Monochrome |
Pins 2 & 3 closed |
On |
Off |
|
CGA |
Pins 2 & 3 closed |
On |
Off |
|
400-line 25MHz |
Pins 2 & 3 closed |
Off |
On |
|
EGA |
Pins 1 & 2 closed |
On |
Off |