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# STB SYSTEMS, INC.
MACH - 512
Category Video
Video Types Supported XVGA
Video Processor Unidentified
Highest Resolution Supported 1024 x 768
Data Bus Type 16-bit ISA
Memory Type DRAM
Maximum Onboard Memory 512KB
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------------+----------+-------------+----------|
| 15-pin analog video | P1 | VGA feature | P2 |
| port | | connector | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VERTICAL REFRESH RATE SELECTION |
|------------------------------------------------------------|
| Mode | J1 |
|----------------------------+-------------------------------|
| Standard | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| ERGO | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS TYPE SELECTION |
|------------------------------------------------------------|
| Setting | J4 | J3 | J2 |
|------------+---------------+---------------+---------------|
| ยป | 16-bit | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
| | | closed | closed | closed |
|---+--------+---------------+---------------+---------------|
| | 8-bit | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | | closed | closed | closed |
+------------------------------------------------------------+