TEXT View Source
# 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
IMG IMG 1
+------------------------------------------------------------+
| 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 |Monochrome| Pins 2 & 3 | On | Off | Off | On |
| 25 | | closed | | | | |
|----------+----------+--------------+-----+-----+-----+-----|
|CGA, 80 x |Monochrome| Pins 2 & 3 | Off | Off | Off | On |
| 25 | | closed | | | | |
|----------+----------+--------------+-----+-----+-----+-----|
|EGA, 40 x |Monochrome| Pins 1 & 2 | On | On | On | Off |
| 25 | | closed | | | | |
|----------+----------+--------------+-----+-----+-----+-----|
|EGA, 80 x |Monochrome| Pins 1 & 2 | Off | On | On | Off |
| 25 | | closed | | | | |
|----------+----------+--------------+-----+-----+-----+-----|
|Monochrome|CGA, 40 x | Pins 2 & 3 | On | Off | On | Off |
| | 25 | closed | | | | |
|----------+----------+--------------+-----+-----+-----+-----|
|Monochrome|CGA, 80 x | Pins 2 & 3 | Off | Off | On | Off |
| | 25 | closed | | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MONITOR TYPE (EGA SECONDARY) |
|------------------------------------------------------------|
| Primary |Secondary | P1 |SW1/1|SW1/2|SW1/3|SW1/4|
|----------+----------+--------------+-----+-----+-----+-----|
|Monochrome|CGA, 40 x | Pins 2 & 3 | On | On | On | On |
| | 25 | closed | | | | |
|----------+----------+--------------+-----+-----+-----+-----|
|Monochrome|CGA, 80 x | Pins 2 & 3 | Off | On | On | On |
| | 25 | closed | | | | |
|----------+----------+--------------+-----+-----+-----+-----|
|Monochrome|EGA, 40 x | Pins 1 & 2 | On | Off | On | On |
| | 25 | closed | | | | |
|----------+----------+--------------+-----+-----+-----+-----|
|Monochrome|EGA, 80 x | Pins 1 & 2 | Off | Off | On | On |
| | 25 | closed | | | | |
|----------+----------+--------------+-----+-----+-----+-----|
|CGA, 40 x |Monochrome| Pins 2 & 3 | On | On | Off | On |
| 25 | | closed | | | | |
|----------+----------+--------------+-----+-----+-----+-----|
|CGA, 80 x |Monochrome| Pins 2 & 3 | Off | On | Off | On |
| 25 | | closed | | | | |
+------------------------------------------------------------+