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# TANDY / RADIO SHACK CORPORATION
SVGA WINDOWS ACCELERATOR ADAPTER (250-4055)
Card Type Video card
Video Processor Unidentified
Maximum Onboard Memory 1MB DRAM
I/O Options VGA feature connector
Data Bus 16-bit ISA
Video Types Supported XVGA
Highest Resolution Supported 1280 x 1024
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|---------------------+-------+----------------------+-------|
| 15-pin analog video | J1 | VGA feature | J2 |
| port | | connector | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|-----------------------------------------+-------+----------|
| » | Zero wait states enabled | W2 | Closed |
|---+-------------------------------------+-------+----------|
| | Zero wait states disabled | W2 | Open |
|---+-------------------------------------+-------+----------|
| » | Monitor uses 31.5KHz horizontal | SW1/5 | Off |
| | frequency | | |
|---+-------------------------------------+-------+----------|
| | Monitor uses 40KHz horizontal | SW1/5 | On |
| | frequency | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VERTICAL FREQUENCY SELECTION - 800 X 600 |
|------------------------------------------------------------|
| Setting | SW1/1 | SW1/2 |
|------------------------+-----------------+-----------------|
| » | 56Hz | Off | Off |
|-------+----------------+-----------------+-----------------|
| | 56Hz | On | On |
|-------+----------------+-----------------+-----------------|
| | 60Hz | Off | On |
|-------+----------------+-----------------+-----------------|
| | 72Hz | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VERTICAL FREQUENCY SELECTION - 1024 X 768 |
|------------------------------------------------------------|
| Setting | SW1/3 | SW1/4 |
|--------------------------+----------------+----------------|
| » | 43Hz, interlaced | Off | Off |
|-----+--------------------+----------------+----------------|
| | 60Hz | Off | On |
|-----+--------------------+----------------+----------------|
| | 70Hz | On | Off |
|-----+--------------------+----------------+----------------|
| | 72Hz | On | On |
+------------------------------------------------------------+