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# QDI COMPUTER, INC.
TVGA-8900C (SOJ/DIP VERSION)
Category Video
Video Types Supported XVGA
Video Processor Trident 8900C
Highest Resolution Supported 1024 x 768
Data Bus Type 16-bit ISA
Memory Type DRAM
Maximum Onboard Memory 1MB
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location |
|-------------------------------+----------------------------|
| 15-pin analog video port | CN1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT CONFIGURATION |
|------------------------------------------------------------|
| IRQ 2/9 | J1 |
|----------------------------+-------------------------------|
| » | Disabled | Pins 2 & 3 closed |
|---+------------------------+-------------------------------|
| | Enabled | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MONITOR DETECTION CONFIGURATION |
|------------------------------------------------------------|
| Setting | J6 |
|--------------------------------------+---------------------|
| » | Standard monitors | Pins 1 & 2 closed |
|---+----------------------------------+---------------------|
| | Non-standard color monitors | Open |
|---+----------------------------------+---------------------|
| | Non-standard monochrome monitors | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VGA SCAN RATE CONFIGURATION |
|------------------------------------------------------------|
| Rate | SW3 |
|----------------------------------+-------------------------|
| » | <48.7KHz | Closed |
|-----+----------------------------+-------------------------|
| | 48.7KHz | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Memory | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (4) 256K x 4 | None |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 4 | (4) 256K x 4 |
+------------------------------------------------------------+