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# UNIDENTIFED
8900 VGA MASTER (TWO LAYER)
Card Type Video card
Video Chip Set Unidentified
Maximum Video Memory 8MB DRAM
Video Types Supported MGA, CGA, EGA, VGA
Highest Resolution Supported 1024 x 768
Data Bus 16-bit ISA
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------+-------+-------------------+-------|
| 15-pin analog video | CN1 | Feature connector | CN2 |
| port | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+--------+-----------|
| » | Factory configured - do not alter | SW1/1 | On |
|---+-----------------------------------+--------+-----------|
| » | Factory configured - do not alter | SW1/2 | On |
|---+-----------------------------------+--------+-----------|
| » | Less than 48KHz scan rate | SW1/3 | On |
|---+-----------------------------------+--------+-----------|
| | 48-49KHz scan rate | SW1/3 | Off |
|---+-----------------------------------+--------+-----------|
| » | Factory configured - do not alter | SW1/4 | On |
|---+-----------------------------------+--------+-----------|
| » | Fast address decode | SW1/5 | Off |
|---+-----------------------------------+--------+-----------|
| | Slow address decode | SW1/5 | On |
|---+-----------------------------------+--------+-----------|
| » | 16 bit data path | SW1/6 | Off |
|---+-----------------------------------+--------+-----------|
| | 8 bit data path | SW1/6 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP1 | JP2 | J3 |
|---------+-----------+-----------+--------------------------|
| 2MB | Open | Closed | Pins 1 & 2, 4 & 5 closed |
|---------+-----------+-----------+--------------------------|
| 4MB | Open | Closed | Pins 1 & 4, 2 & 5 closed |
|---------+-----------+-----------+--------------------------|
| 8MB | Closed | Open | Pins 2 & 3, 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SIZE SELECTION |
|------------------------------------------------------------|
| Setting | J2 |
|------------------------+-----------------------------------|
| » | Autodetect | Pins 2 & 3 closed |
|---+--------------------+-----------------------------------|
| | Standard interface | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| Setting | J1 |
|------------------------+-----------------------------------|
| » | IRQ9 disabled | Pins 2 & 3 closed |
|---+--------------------+-----------------------------------|
| | IRQ9 enabled | Pins 1 & 2 closed |
+------------------------------------------------------------+