
I/O Map
F0
Coprocessor
Clear coprocessor busy
F1
Reset
coprocessor
Port
Functional
group
Usage
B
B
1F0
IDE disk controller
Data register
1F1
Error / write precompensation
1F2
Sector
count
1F3
Sector
number
1F4
Cylinder low register
1F5
Cylinder high register
1F6
SDH
register
1F7
Status/command
register
2F8
COM2 serial port
Receiver/transmitter buffer
Baud rate divisor latch (LSB)
2F9
Interrupt enable register
Baud rate divisor latch (MSB)
2FA
Interrupt ID register
2FB
Line control register
2FC
Modem control register
2FD
Line status register
2FE
Modem status register
340
SCSI controller
Sequence control register
341
Transfer control 0 register
342
Transfer control 1 register
343
Signal out register
344
Rate control register
345
Selection/reselection ID register
346
Latched data register
347
Data bus register
348
Count 0 register
349
Count 1 register
34A
Count 2 register
34B
Interrupt status 0 register
34C
Status 1 register
34D
Status 2 register
34E
Status 3 register
34F
Status 4 register
350
Interrupt mode 0 register
351
Interrupt mode 1 register
352
DMA control 0 register
353
DMA control 1 register
354
DMA status register
355
FIFO status register
356
Data port register
358
Burst control register
35A
Port A register
35B
Port B register
35C
Revision
register
35D
Stack
register
35E
Test
register
Port
Functional
group
Usage
Page B3
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