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# SONY CORPORATION
CDB-231
Card Type CD-ROM host card
Chip Set Unidentified
Maximum Onboard Memory None
I/O Options Host bus connector (2)
Data Bus 8-bit ISA
Floppy drives supported None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------+-------+-------------------+-------|
| Internal host bus | CN1 | External host bus | CN2 |
| connector | | connector | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
|Setting |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5|SW1/6|SW1/7|SW1/8|
|--------+------+------+------+------+-----+-----+-----+-----|
| |000h | On | On | On | On | On | On | On | On |
|--+-----+------+------+------+------+-----+-----+-----+-----|
| |004h | Off | On | On | On | On | On | On | On |
|--+-----+------+------+------+------+-----+-----+-----+-----|
| |008h | On | Off | On | On | On | On | On | On |
|--+-----+------+------+------+------+-----+-----+-----+-----|
| |00Ch | Off | Off | On | On | On | On | On | On |
|--+-----+------+------+------+------+-----+-----+-----+-----|
| |010h | On | On | Off | On | On | On | On | On |
|--+-----+------+------+------+------+-----+-----+-----+-----|
|» |340h | On | On | On | On | Off | On | Off | Off |
|--+-----+------+------+------+------+-----+-----+-----+-----|
| |3ECh | Off | Off | On | Off | Off | Off | Off | Off |
|--+-----+------+------+------+------+-----+-----+-----+-----|
| |3F0h | On | On | Off | Off | Off | Off | Off | Off |
|--+-----+------+------+------+------+-----+-----+-----+-----|
| |3F4h | Off | On | Off | Off | Off | Off | Off | Off |
|--+-----+------+------+------+------+-----+-----+-----+-----|
| |3F8h | On | Off | Off | Off | Off | Off | Off | Off |
|--+-----+------+------+------+------+-----+-----+-----+-----|
| |3FCh | Off | Off | Off | Off | Off | Off | Off | Off |
|------------------------------------------------------------|
| Note:A total of 256 base address settings are |
| available. The switches are a binary representation of |
| the decimal memory addresses. SW1/8 is the Most |
| Significant Bit and switch SW1/1 is the Least |
| Significant Bit. The switches have the following |
| decimal values: SW1/8=512, SW1/7=256, SW1/6=128, |
| SW1/5=64, SW1/4=32, SW1/3=16, SW1/2=8, SW1/1=4. Turn |
| off the switches and add the values of the switches to |
| obtain the correct memory address. (Off=1, On=0) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | SW2/1 | SW2/2 | SW2/3 | SW2/4 | SW2/5 | SW2/6 |
|-----------+--------+-------+-------+-------+-------+-------|
| | 2 | On | Off | Off | Off | Off | Off |
|---+-------+--------+-------+-------+-------+-------+-------|
| | 3 | Off | On | Off | Off | Off | Off |
|---+-------+--------+-------+-------+-------+-------+-------|
| | 4 | Off | Off | On | Off | Off | Off |
|---+-------+--------+-------+-------+-------+-------+-------|
| | 5 | Off | Off | Off | On | Off | Off |
|---+-------+--------+-------+-------+-------+-------+-------|
| » | None | Off | Off | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | SW3/1 | SW3/2 | SW3/3 | SW3/4 | SW3/5 | SW3/6 |
|-----------+--------+-------+-------+-------+-------+-------|
| | 1 | On | Off | Off | On | Off | Off |
|---+-------+--------+-------+-------+-------+-------+-------|
| | 2 | Off | On | Off | Off | On | Off |
|---+-------+--------+-------+-------+-------+-------+-------|
| | 3 | Off | Off | On | Off | Off | On |
|---+-------+--------+-------+-------+-------+-------+-------|
| » | None | Off | Off | Off | Off | Off | Off |
+------------------------------------------------------------+