TWINHEAD INTERNATIONAL CORPORATION
CT-8490
Card Type | Video card |
Video Chip Set | Unidentified |
Maximum Video Memory | Unidentified |
Video Types Supported | Monochrome, CGA, EGA, VGA |
Highest Resolution Supported | 800 x 600 |
Data Bus | 8-bit ISA |

CONNECTIONS | |||
Function | Label | Function | Label |
VGA feature connector | CN1 | 9-pin TTL video connector | CN3 |
15-pin Analog video connector | CN2 | ||
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
| » | CT-8490 is primary display card | SW1/5 | On |
| CT-8490 is secondary display card | SW1/5 | Off | |
MONITOR TYPE SELECTION | ||||
Monitor | SW1/1 | SW1/2 | SW1/3 | SW1/4 |
Monochrome | On | On | On | On |
CGA | Off | On | On | On |
EGA | On | Off | On | On |
VGA | On | On | On | Off |
Monochrome (PS/2) | Off | On | On | Off |
MultiSync TTL | Off | Off | On | On |
MultiSync analog | Off | On | On | Off |
DISPLAY MODE SELECTION | |||
Setting | SW1/6 | SW1/7 | SW1/8 |
Lock at monochrome display mode | On | Off | On |
Lock at CGA display mode | Off | On | On |
Lock at EGA display mode | On | On | Off |
Lock at VGA display mode | On | On | Off |
Lock at VGA display mode | On | On | Off |
Set at auto switch | On | On | On |
Set at auto switch | On | On | On |