Compaq Deskpro EX User Manual page 62

ICH Fixed I/O Registers cont
Port
A0h
A1
A4h-A5h, A8h-A8h,
ACh-ADh, B0h-B1h,
B4h-B5h, B8h-B9h,
BCh-BDh
B2h
B3h
C0h, C4h, C8h, CCh
C1h
C5h
C9h
CDh
C2h, C6h, CAh, CEh
C3h
C7h
CBh
CFh
D0h
D1h
D4h
D5h
D6h
D7h
D8h
D9h
DAh
DBh
DCh
DEh
DEh
DFh
F0h
170h-177h
1F0h-1F7h
376h
6-4 Specifications
Register Name
Slave PIC ICW1 Init. Cmd Word 1 Register
Slave PIC OCW2 Op Ctrl Word 2 Register
Slave PIC OCW3 Op Ctrl Word 3 Register
Slave PIC ICW2 Init. Cmd Word 2 Register
Slave PIC ICW3 Init. Cmd Word 3 Register
Slave PIC ICW4 Init. Cmd Word 4 Register
Slave PIC OCW1 Op Ctrl Word 1 Register
Aliased at A0h-A1h
Advanced Power Management Control Port Register
Advanced Power Management Status Port Register
Channel 4, 5, 6, 7 DMA Base and Current Address Register
Aliased at C0h
Aliased at C4h
Aliased at C8h
Aliased at CCh
Channel 4, 5, 6, 7 DMA Base and Current Count Register
Aliased at C2h
Aliased at C6h
Aliased at CAh
Aliased at Ceh
Channel 4-7 DMA Command Register
Channel 4-7 DMA Status Register
Aliased at D0h
Channel 4-7 DMA Write Single Mask Register
Aliased at D4h
Channel 4-7 DMA Channel Mode Register
Aliased at D6h
Channel 4-7 DMA Clear Byte Pointer Register
Aliased at D8h
Channel 4-7 DMA Master Clear Register
Aliased at DAh
Channel 4-7 DMA Clear Mask Register
Aliased at DCh
Channel 4-7 DMA Write All Mask Register
Aliased at DEh
Coprocessor Error Register
PIO Mode Command Block Offset for Secondary Drive
PIO Mode Command Block Offset for Primary Drive
PIO Mode Control Block Offset for Secondary Drive
continued