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# UNIDENTIFIED
WD90C31
Category Video
Video Types Supported XVGA
Video Processor Western Digital Corporation
Highest Resolution Supported 1280 x 1024
Data Bus Type VESA local bus
Memory Type DRAM
Maximum Onboard Memory 1MB
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------------+----------+--------------+----------|
| 15-pin analog video | CN1 | VESA Feature | CN2 |
| port | | connector | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE |
|------------------------------------------------------------|
| Setting | W1 | W3 |
|--------------------+--------------------+------------------|
| 80386 | Pins 1 & 2 closed | Closed |
|--------------------+--------------------+------------------|
| 80486 | Pins 2 & 3 closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MONITOR TYPE (800 X 600 RESOLUTION) |
|------------------------------------------------------------|
| » Refresh Rates | SW1/1 | SW1/2 |
|--------------------------------------------+-------+-------|
| » | Vertical: 56Hz NI, Horizontal: 35.12- | Off | Off |
|---+----------------------------------------+-------+-------|
| » | Vertical: 72Hz NI, Horizontal: 37.83+- | On | Off |
|---+----------------------------------------+-------+-------|
| » | Vertical: 60Hz NI, Horizontal: 47.67+ | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MONITOR TYPE (1024 X 768 RESOLUTION) |
|------------------------------------------------------------|
| » Refresh Rates | SW1/3 | SW1/4 |
|--------------------------------------------+-------+-------|
| » | Vertical: 87Hz Interlaced, Horizontal: | Off | Off |
| | 35.60+ | | |
|---+----------------------------------------+-------+-------|
| » | Vertical: 70Hz NI, Horizontal: 56.56- | On | Off |
|---+----------------------------------------+-------+-------|
| » | Vertical: 60Hz NI, Horizontal: 48.37- | Off | On |
|---+----------------------------------------+-------+-------|
| » | Vertical: 72Hz NI, Horizontal: 59.46- | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MONITOR TYPE (VGA) |
|------------------------------------------------------------|
| » Refresh Rate | SW1/5 |
|---------------------------------------------+--------------|
| » | Vertical: 60, 70Hz, Horizontal: 31.5KHz | Off |
|---+-----------------------------------------+--------------|
| » | Vertical: 75, 88Hz, Horizontal: 40KHz | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY CONFIGURED SETTINGS |
|------------------------------------------------------------|
| Jumper | Setting |
|----------------------------+-------------------------------|
| W5 | Pins 1 & 2 closed |
+------------------------------------------------------------+