Specifications

Port Functional group Usage
9 year
A status A
B status B
C status C
D status D
E RAM
...
3F RAM
81 DMA Channel 2 page register
82 Channel 3 page register
83 Channel 1 page register
87 Channel 0 page register
89 Channel 6 page register
8A Channel 7 page register
8B Channel 5 page register
8F Refresh page register
96 EXM Configuration EXMID driver (EPC-2x) (W)
A0 Interrupt controller 2 Port 0
A1 Port 1
C0 DMA Channel 4 address
C2 Channel 4 count
C4 Channel 5 address
C6 Channel 5 count
C8 Channel 6 address
CA Channel 6 count
CC Channel 7 address
CE Channel 7 count
D0 Command/status
D2 DMA request
D4 Command register (R)
Single-bit DMA req mask(W)
D6 Mode
D8 Set byte pointer (R)
Clear byte pointer (W)
DA Temporary register (R)
Master clear (W)
DC Clear mode reg counter (R)
Clear all DMA req mask (W)
DE All DMA request mask
F0 Coprocessor Clear coprocessor busy
F1 Reset coprocessor
1F0 IDE 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
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