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# QUADRAM
QUADBOARD
Card Type Multi-I/O card
Chip Set Unidentified
Maximum Onboard Memory 384KB DRAM
I/O Options Game port, parallel port, serial port
Data Bus 8-bit ISA
Floppy drives supported None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------+-------+-------------------+-------|
| Serial port | CN1 | Game port | CN3 |
|------------------------+-------+-------------------+-------|
| Parallel port | CN2 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------------+-------+-----------|
| » | Game port enabled | SW1/1 | On |
|---+------------------------------------+-------+-----------|
| | Game port disabled | SW1/1 | Off |
|---+------------------------------------+-------+-----------|
| » | Clock/calendar enabled | SW1/2 | On |
|---+------------------------------------+-------+-----------|
| | Clock/calendar disabled | SW1/2 | Off |
|---+------------------------------------+-------+-----------|
| » | Parity enabled | SW1/3 | On |
|---+------------------------------------+-------+-----------|
| | Parity disabled | SW1/3 | Off |
|---+------------------------------------+-------+-----------|
| » | Quadboard memory enabled | SW1/4 | On |
|---+------------------------------------+-------+-----------|
| | Quadboard memory disabled | SW1/4 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | Bank 4 | Bank |
| | | | | | | 5 |
|-------+--------+--------+--------+--------+--------+-------|
| 64KB | (9) | None | None | None | None | None |
| | 4164K | | | | | |
|-------+--------+--------+--------+--------+--------+-------|
| 128KB | (9) | (9) | None | None | None | None |
| | 4164K | 4164K | | | | |
|-------+--------+--------+--------+--------+--------+-------|
| 192KB | (9) | (9) | (9) | None | None | None |
| | 4164K | 4164K | 4164K | | | |
|-------+--------+--------+--------+--------+--------+-------|
| 256KB | (9) | (9) | (9) | (9) | None | None |
| | 4164K | 4164K | 4164K | 4164K | | |
|-------+--------+--------+--------+--------+--------+-------|
| 320KB | (9) | (9) | (9) | (9) | (9) | None |
| | 4164K | 4164K | 4164K | 4164K | 4164K | |
|-------+--------+--------+--------+--------+--------+-------|
| 384KB | (9) | (9) | (9) | (9) | (9) | (9) |
| | 4164K | 4164K | 4164K | 4164K | 4164K | 4164K |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | SW1/5 | SW1/6 | SW1/7 | SW1/8 |
|------------+-----------+-----------+-----------+-----------|
| 64KB | On | On | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 128KB | On | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 192KB | On | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 256KB | On | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| 320KB | On | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 384KB | On | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 448KB | On | Off | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 512KB | Off | On | On | On |
|------------+-----------+-----------+-----------+-----------|
| 576KB | Off | On | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 640KB | Off | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 704KB | Off | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 768KB | Off | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| 832KB | Off | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 896KB | Off | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 960KB | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | JP1 |
|----------------------------+-------------------------------|
| LPT1 (378h) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| LPT2 (278h) | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | JP1 |
|----------------------------+-------------------------------|
| COM1 (3F8h) | Pins 5 & 6 closed |
|----------------------------+-------------------------------|
| COM2 (2F8h) | Pins 4 & 5 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | JP1 |
|----------------------------+-------------------------------|
| IRQ4 | Pins 7 & 8 closed |
|----------------------------+-------------------------------|
| IRQ3 | Pins 8 & 9 closed |
+------------------------------------------------------------+