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# STB SYSTEMS, INC.
MVP-4
Card Type Video card
Video Chip Set Tseng Labs ET4000
Highest Resolution Supported 1280 x 1024
Maximum Video Memory 4MB DRAM
Data Bus 8/16-bit ISA
Video Types Supported XVGA
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------+-----------+-----------------+-----------|
| Video port | CN1 | Video port | CN3 |
|------------------+-----------+-----------------+-----------|
| Video port | CN2 | Video port | CN4 |
|------------------------------------------------------------|
| Note:Each video port acts as a separate adapter, with |
| separately configurable memory. The exact location of |
| port 1 is unidentified. All indications of "Port 1" |
| are only for the purposes of this document. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|-------------------------------------+-------+--------------|
| | Video BIOS uses 16-bit data | J1 | Pins 2 & 3 |
| | transfer | | closed |
|---+---------------------------------+-------+--------------|
| | Video BIOS uses 8-bit data | J1 | Pins 1 & 2 |
| | transfer | | closed |
|---+---------------------------------+-------+--------------|
| | Card uses 16-bit data transfer | J2 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Card uses 8-bit data transfer | J2 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| ยป | Factory configured - do not | J5 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM, PORT 1 |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (4) 128KB | NONE |
|------------------+--------------------+--------------------|
| 1MB | (4) 128KB | (4) 128KB |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM, PORT 2 |
|------------------------------------------------------------|
| Size | Bank 2 | Bank 3 |
|------------------+--------------------+--------------------|
| 512KB | (4) 128KB | NONE |
|------------------+--------------------+--------------------|
| 1MB | (4) 128KB | (4) 128KB |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM, PORT 3 |
|------------------------------------------------------------|
| Size | Bank 4 | Bank 5 |
|------------------+--------------------+--------------------|
| 512KB | (4) 128KB | NONE |
|------------------+--------------------+--------------------|
| 1MB | (4) 128KB | (4) 128KB |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM, PORT 4 |
|------------------------------------------------------------|
| Size | Bank 6 | Bank 7 |
|------------------+--------------------+--------------------|
| 512KB | (4) 128KB | NONE |
|------------------+--------------------+--------------------|
| 1MB | (4) 128KB | (4) 128KB |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BOARD NUMBER |
|------------------------------------------------------------|
| Setting | J3 | J4 |
|------------------+--------------------+--------------------|
| Board 1 | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Board 2 | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Board 3 | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Board 4 | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VERTICAL REFRESH RATE |
|------------------------------------------------------------|
| Resolution | Refresh Rate | J6 |
|------------------+--------------------+--------------------|
| 640 x 480 | 60Hz | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 800 x 600 | 56Hz | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 1024 x 768 | 43Hz (interlaced) | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 640 x 480 | 72Hz | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 800 x 600 | 72Hz | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 1024 x 768 | 60Hz | Pins 1 & 2 closed |
+------------------------------------------------------------+