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# 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
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|--------------------------+-------+-----------------+-------|
| VGA feature connector | CN1 | 9-pin TTL video | CN3 |
| | | connector | |
|--------------------------+-------+-----------------+-------|
| 15-pin Analog video | CN2 | | |
| connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------------+-------+-----------|
| ยป | 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 |
+------------------------------------------------------------+