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# WESTERN DIGITAL CORPORATION
VIEWTOP PD2 VGA
Card Type Video card
Video Chip Set Western Digital
Maximum Video Memory 1MB
Data Bus 16-bit ISA
Video Types Supported VGA
Highest Resolution Supported 1024 x 768
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------+-------+-------------------+-------|
| 15-pin video analog | CN1 | Feature connector | CN2 |
| video port | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | JP2 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | 0 wait state enabled | JP3 | Closed |
|---+---------------------------------+-------+--------------|
| | 0 wait state disabled | JP3 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|--------------------+-------------------+-------------------|
| 512KB | 512KB | None |
|--------------------+-------------------+-------------------|
| 1MB | 512KB | 512KB |
|------------------------------------------------------------|
| Note: The size of the memory chips is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP1 |
|------------------------------+-----------------------------|
| 512KB | Closed |
|------------------------------+-----------------------------|
| 1MB | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCAN RATE SELECTION |
|------------------------------------------------------------|
| Horizontal | Vertical | SW1/5 |
|-----------------------+-------------------+----------------|
| » | 31.5KHz | 60/70Hz | Off |
|---+-------------------+-------------------+----------------|
| | 40KHz | 75/88Hz | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VERTICAL TIMING SELECTION (800 X 600) |
|------------------------------------------------------------|
| Timing | SW1/1 | SW1/2 |
|------------------------+-----------------+-----------------|
| » | 56Hz | Off | Off |
|-------+----------------+-----------------+-----------------|
| | 56Hz | On | On |
|-------+----------------+-----------------+-----------------|
| | 60Hz | Off | On |
|-------+----------------+-----------------+-----------------|
| | 72Hz | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VERTICAL TIMING SELECTION (1024 X 768) |
|------------------------------------------------------------|
| Timing | SW1/3 | SW1/4 |
|-------------------------+-----------------+----------------|
| » | Interlaced | Off | Off |
|---+---------------------+-----------------+----------------|
| | Interlaced | On | On |
|---+---------------------+-----------------+----------------|
| | 60Hz non interlaced | Off | On |
|---+---------------------+-----------------+----------------|
| | 70Hz non interlaced | On | Off |
+------------------------------------------------------------+