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# QDI COMPUTER, INC.
TVGA-8900C VER. 1
DTK COMPUTER, INC.
PTI-223C
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 | Purpose | Location |
|------------------------+----------+-------------+----------|
| 15-pin analog video | CN1 | VGA feature | CN2 |
| port | | connector | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 monitors | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VGA SCAN RATE CONFIGURATION |
|------------------------------------------------------------|
| Rate | SW3 |
|----------------------------------+-------------------------|
| » | <48.7KHz | Closed |
|-----+----------------------------+-------------------------|
| | 48.7KHz | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS AUTODETECT CONFIGURATION |
|------------------------------------------------------------|
| Setting | SW4 |
|-------------------------------+----------------------------|
| Disabled | Open |
|-------------------------------+----------------------------|
| Enabled | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Memory | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+------------+------------+------------+------------|
| 256KB | (2) 256K x | None | None | None |
| | 4 | | | |
|--------+------------+------------+------------+------------|
| 512KB | (2) 256K x | (2) 256K x | None | None |
| | 4 | 4 | | |
|--------+------------+------------+------------+------------|
| 1MB | (2) 256K x | (2) 256K x | (2) 256K x | (2) 256K x |
| | 4 | 4 | 4 | 4 |
+------------------------------------------------------------+