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