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# AQUARIUS SYSTEMS, INC.
AT BUS I/O
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 16-bit ISA |
|-------------------+----------------------------------------|
| Size: | Half-length, full-height card |
|-------------------+----------------------------------------|
| Hard drive | Two IDE(AT) drives |
| supported: | |
|-------------------+----------------------------------------|
| Floppy drives | Two 360KB, 720KB, 1.2MB, or 1.44MB |
| supported: | drives |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|------------------------------------------+-----------------|
| 40-pin IDE(AT) connector | J1 |
|------------------------------------------+-----------------|
| 10-pin serial port 2 - internal | J2 |
|------------------------------------------+-----------------|
| 9-pin serial port 1 - external | J3 |
|------------------------------------------+-----------------|
| 25-pin parallel port - external | J4 |
|------------------------------------------+-----------------|
| 34-pin cable connector - floppy drive | J5 |
|------------------------------------------+-----------------|
| 2-pin connector - drive active LED | J10 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|--------------------------------+----------+----------------|
| Floppy transfer rate is 300 | J6 | closed |
| KB/s | | |
|--------------------------------+----------+----------------|
| Floppy transfer rate is 250 | J6 | open |
| KB/s | | |
|--------------------------------+----------+----------------|
| IOCHRDY signal enabled | JP1 | closed |
|--------------------------------+----------+----------------|
| IOCHRDY signal disabled | JP1 | open |
|--------------------------------+----------+----------------|
| Floppy drive interface enabled | JP3 | closed |
|--------------------------------+----------+----------------|
| Floppy drive interface | JP3 | open |
| disabled | | |
|--------------------------------+----------+----------------|
| IDE(AT) interface IRQ14 | J9 | pins 1 & 2 |
| enabled | | closed |
|--------------------------------+----------+----------------|
| IDE(AT) interface disabled | J9 | pins 2 & 3 |
| | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| LPT | JP6/5 | JP6/6 |
|---------------------+-------------------+------------------|
| LPT1 (378h) | closed | open |
|---------------------+-------------------+------------------|
| LPT2 (278h) | open | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 ADDRESS SELECTION |
|------------------------------------------------------------|
| COM | JP6/1 | JP6/3 |
|---------------------+-------------------+------------------|
| COM1 (3F8h) | closed | open |
|---------------------+-------------------+------------------|
| COM1 (3E8h) | open | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 ADDRESS SELECTION |
|------------------------------------------------------------|
| COM | JP6/2 | JP6/4 |
|---------------------+-------------------+------------------|
| COM2 (2F8h) | closed | open |
|---------------------+-------------------+------------------|
| COM2 (2E8h) | open | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | JP2/1 | JP2/2 | JP2/3 |
|--------------+---------------+--------------+--------------|
| IRQ4 | closed | open | open |
|--------------+---------------+--------------+--------------|
| IRQ5 | open | closed | open |
|--------------+---------------+--------------+--------------|
| IRQ9 | open | open | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | JP2/4 | JP2/5 | JP2/6 |
|--------------+---------------+--------------+--------------|
| IRQ3 | closed | open | open |
|--------------+---------------+--------------+--------------|
| IRQ5 | open | open | closed |
|--------------+---------------+--------------+--------------|
| IRQ9 | open | closed | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | JP2/7 | JP2/8 |
|-------------------+--------------------+-------------------|
| IRQ5 | closed | open |
|-------------------+--------------------+-------------------|
| IRQ7 | open | closed |
+------------------------------------------------------------+