TWINHEAD INTERNATIONAL CORP.
CT-8090
|
Card Type |
Video card |
|
Video Processor |
Unidentified |
|
Maximum Onboard Memory |
256KB DRAM |
|
I/O Options |
Feature connector, light pen port |
|
Data Bus |
8-bit ISA |
|
Video Types Supported |
EGA |
|
Highest Resolution Supported |
640 x 350 |
|
CONNECTIONS |
|||
|
Function |
Label |
Function |
Label |
|
Unidentified |
J1 |
Feature connector |
J4 |
|
Unidentified |
J2 |
Light pen port |
P2 |
|
9-pin EGA port |
J3 |
|
|
|
MONITOR TYPE (EGA PRIMARY) |
||||||
|
Primary |
Secondary |
P1 |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
CGA, 40 x 25 |
Monochrome |
Pins 2 & 3 closed |
On |
Off |
Off |
On |
|
CGA, 80 x 25 |
Monochrome |
Pins 2 & 3 closed |
Off |
Off |
Off |
On |
|
EGA, 40 x 25 |
Monochrome |
Pins 1 & 2 closed |
On |
On |
On |
Off |
|
EGA, 80 x 25 |
Monochrome |
Pins 1 & 2 closed |
Off |
On |
On |
Off |
|
Monochrome |
CGA, 40 x 25 |
Pins 2 & 3 closed |
On |
Off |
On |
Off |
|
Monochrome |
CGA, 80 x 25 |
Pins 2 & 3 closed |
Off |
Off |
On |
Off |
|
MONITOR TYPE (EGA SECONDARY) |
||||||
|
Primary |
Secondary |
P1 |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
Monochrome |
CGA, 40 x 25 |
Pins 2 & 3 closed |
On |
On |
On |
On |
|
Monochrome |
CGA, 80 x 25 |
Pins 2 & 3 closed |
Off |
On |
On |
On |
|
Monochrome |
EGA, 40 x 25 |
Pins 1 & 2 closed |
On |
Off |
On |
On |
|
Monochrome |
EGA, 80 x 25 |
Pins 1 & 2 closed |
Off |
Off |
On |
On |
|
CGA, 40 x 25 |
Monochrome |
Pins 2 & 3 closed |
On |
On |
Off |
On |
|
CGA, 80 x 25 |
Monochrome |
Pins 2 & 3 closed |
Off |
On |
Off |
On |
