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# PEAKTRON COMPUTER, INC.
PVGA 2/4/8-DRAM (VERSION 2)
Category Video
Video Types Supported CGA/EGA/Monochrome/VGA/XVGA
Video Processor TVGA 8900
Highest Resolution Supported 1024 x 768
Data Bus Type 16-bit ISA
Memory Type DRAM
Maximum Onboard Memory 1024KB
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------------+----------+-------------+----------|
| 15-pin analog video | CN1 | VGA feature | CN3 |
| port | | connector | |
|------------------------+----------+-------------+----------|
| 9-pin TTL video port | CN2 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MONITOR TYPE SELECTION |
|------------------------------------------------------------|
| Type | SW1/1 | SW1/2 |
|------------------------+-----------------+-----------------|
| » | VGA mode | On | On |
|---+--------------------+-----------------+-----------------|
| | EGA mode | Off | On |
|---+--------------------+-----------------+-----------------|
| | CGA mode | On | Off |
|---+--------------------+-----------------+-----------------|
| | MDA/Hercules mode | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCAN RATE SELECTION |
|------------------------------------------------------------|
| Rate | SW1/3 |
|-----------------------------------+------------------------|
| » | > 48KHz | On |
|---+-------------------------------+------------------------|
| | < 48 - 49KHz | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ADDRESS DECODE SELECTION |
|------------------------------------------------------------|
| Setting | SW1/5 |
|---------------------------------+--------------------------|
| » | Fast | Off |
|------+--------------------------+--------------------------|
| | Slow | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ 2/9 | J1 |
|----------------------------+-------------------------------|
| » | Disabled | Pins 2 & 3 closed |
|---+------------------------+-------------------------------|
| | Enabled | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS DATA PATH SELECTION |
|------------------------------------------------------------|
| Setting | SW1/6 |
|----------------------------------+-------------------------|
| » | 16-bit | Off |
|-----+----------------------------+-------------------------|
| | 8-bit | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SIZE DETECTION |
|------------------------------------------------------------|
| Setting | J2 |
|--------------------------------+---------------------------|
| » | Autodetect | Pins 2 & 3 closed |
|---+----------------------------+---------------------------|
| | Standard interface | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY CONFIGURED - DO NOT ALTER |
|------------------------------------------------------------|
| Switch | Position |
|-----------------------------+------------------------------|
| SW1/4 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | J3 |
|---------+------------+------------+------------------------|
| 256KB | (2) 44256 | NONE | Pins 1 & 2, 4 & 5 |
| | | | closed |
|---------+------------+------------+------------------------|
| 512KB | (4) 44256 | NONE | Pins 1 & 4, 2 & 5 |
| | | | closed |
|---------+------------+------------+------------------------|
| 1024KB | (4) 44256 | (4) 44256 | Pins 2 & 3, 5 & 6 |
| | | | closed |
|------------------------------------------------------------|
| Note: The exact locations of banks 0 and 1 are |
| unidentified. |
+------------------------------------------------------------+