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# SONY CORPORATION
OPA-4741
Card Type CD-ROM interface card
Chip Set Unidentified
Maximum Onboard Unidentified
Memory
I/O Options IDE interface, audio in - CD-ROM, headphone
jack
Hard Drives None
supported
Floppy drives None
supported
Data Bus 8-bit ISA
Card Size Half-length
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|--------------------------+-------+-----------------+-------|
| IDE interface - internal | CN1 | Headphone jack | CN3 |
|--------------------------+-------+-----------------+-------|
| Audio in - CD-ROM | CN2 | IDE interface - | CN4 |
| | | external | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | JP1/C | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP1/C | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP2/D | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP3/D | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP4/A | Unidentified |
| | alter (IRQ interrupt - not | | |
| | used) | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP4/B | Unidentified |
| | alter (IRQ interrupt - not | | |
| | used) | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP4/C | Unidentified |
| | alter (IRQ interrupt - not | | |
| | used) | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP4/D | Unidentified |
| | alter (IRQ interrupt - not | | |
| | used) | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | JP2/A | JP2/B | JP2/C | JP3/A | JP3/B | JP3/C |
|---------+--------+--------+--------+-------+-------+-------|
| | 1 | Closed | Open | Open |Closed | Open | Open |
|---+-----+--------+--------+--------+-------+-------+-------|
| | 2 | Open | Closed | Open | Open |Closed | Open |
|---+-----+--------+--------+--------+-------+-------+-------|
|» | 3 | Open | Open | Closed | Open | Open |Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | JP1/A | JP1/B |
|---------------------+-------------------+------------------|
| | 320h | Closed | Closed |
|---+-----------------+-------------------+------------------|
| | 330h | Closed | Open |
|---+-----------------+-------------------+------------------|
| » | 340h | Open | Closed |
|---+-----------------+-------------------+------------------|
| | 360h | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| OPA-4741 Sony CD-ROM interface kit is compatible with Sony |
| CDU 31A and Sony CDU 33A CD-ROM drives. |
+------------------------------------------------------------+