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# ORCHID TECHNOLOGY
FAHRENHEIT VLB
Category Video
Video Types Supported XVGA
Video Processor S3 86C911
Highest Resolution Supported 1280 X 1024
Data Bus Type 32-bit VESA Local Bus
Memory Type DRAM
Maximum Onboard Memory 2048KB
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------------+----------+--------------+----------|
| 15-pin analog video | CN1 | VESA Feature | J5 |
| port | | connector | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ 2/9 | JP1 |
|----------------------------+-------------------------------|
| ยป | Disabled | Pins 2 & 3 closed |
|---+------------------------+-------------------------------|
| | Enabled | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 640 X 480 REFRESH RATE SELECTION |
|------------------------------------------------------------|
| Rate | SW1/1 | SW1/2 |
|-------------------+--------------------+-------------------|
| 72Hz | Off | Off |
|-------------------+--------------------+-------------------|
| 72Hz | On | Off |
|-------------------+--------------------+-------------------|
| 60Hz | Off | On |
|-------------------+--------------------+-------------------|
| 60Hz | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 800 X 600 REFRESH RATE SELECTION |
|------------------------------------------------------------|
| Rate | SW1/1 | SW1/2 |
|-------------------+--------------------+-------------------|
| 72Hz | Off | Off |
|-------------------+--------------------+-------------------|
| 72Hz | On | Off |
|-------------------+--------------------+-------------------|
| 56Hz | Off | On |
|-------------------+--------------------+-------------------|
| 60Hz | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 1024 X 768 REFRESH RATE CONFIGURATION |
|------------------------------------------------------------|
| Rate | Mode | SW1/1 | SW1/2 |
|-------------+----------------+--------------+--------------|
| 60Hz | Non-Interlaced | Off | Off |
|-------------+----------------+--------------+--------------|
| 70Hz | Non-Interlaced | On | Off |
|-------------+----------------+--------------+--------------|
| 43Hz | Interlaced | Off | On |
|-------------+----------------+--------------+--------------|
| 60HZ | Non-Interlaced | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 1280 X 960/1280 X 1024 REFRESH RATE CONFIGURATION |
|------------------------------------------------------------|
| Rate | Mode | SW1/1 | SW1/2 |
|-------------+----------------+--------------+--------------|
| 43Hz | Interlaced | Off | Off |
|-------------+----------------+--------------+--------------|
| 48Hz | Interlaced | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY CONFIGURED - DO NOT ALTER |
|------------------------------------------------------------|
| Switch | Position |
|-----------------------------+------------------------------|
| SW1/3 | Off |
|-----------------------------+------------------------------|
| SW1/4 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | JP5 | JP6 |
|-----------+------------+------------+-----------+----------|
| 1024KB | (8) 44256 | NONE | Open | Open |
|-----------+------------+------------+-----------+----------|
| 2048KB | (8) 44256 | (8) 44256 | Closed | Closed |
+------------------------------------------------------------+