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# ORCHID TECHNOLOGY
FAHRENHEIT 1280 PLUS/VLB
Category Video
Video Types Supported XVGA
Video Processor Orchid
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 | VGA feature | CN2 |
| port | | connector | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REFRESH RATE CONFIGURATION |
|------------------------------------------------------------|
| 640 x | 800 x | 1024 x | 1280 x | 1280 x | SW1/1 | SW1/2 |
| 480 | 600 | 768 | 960 | 1024 | | |
|-------+-------+--------+--------+----------+-------+-------|
| 72Hz | 72Hz | 60Hz | 45Hz | 45Hz | Off | Off |
|-------+-------+--------+--------+----------+-------+-------|
| 72Hz | 72Hz | 70Hz | 48Hz | 48Hz | On | Off |
|-------+-------+--------+--------+----------+-------+-------|
| 60HZ | 56HZ | 43HZ | N/A | N/A | Off | On |
|-------+-------+--------+--------+----------+-------+-------|
| 60Hz | 60Hz | 60Hz | N/A | N/A | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO INTERRUPT CONFIGURATION |
|------------------------------------------------------------|
| IRQ 2/9 | JP1 |
|----------------------------+-------------------------------|
| » | Disabled | Pins 2 & 3 closed |
|---+------------------------+-------------------------------|
| | Enabled | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP1 |
|---------------------------------+--------------------------|
| » | All other CPU speeds | Pins 2 & 3 closed |
|---+-----------------------------+--------------------------|
| | 80486/50MHz | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY CONFIGURED - DO NOT ALTER |
|------------------------------------------------------------|
| Switch | Position |
|-----------------------------+------------------------------|
| SW1/4 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1024KB | (2) 44256 | None |
|------------------+--------------------+--------------------|
| 2048KB | (2) 44256 | (2) 44256 |
+------------------------------------------------------------+