APPENDIX
MI889 User’s Manual
49
Appendix
A. I/O Port Address Map
Each peripheral device in the system is assigned a set of I/O port
addresses that also becomes the identity of the device. The following
table lists the I/O port addresses used.
Address
Device Description
0000h-0CF7h
PCI bus
0000h-0CF7h
Direct memory access controller
0010h-001Fh
Motherboard resources
0020h-0021h
Programmable interrupt controller
0022h-003Fh
Motherboard resources
0040h-0043h
System timer
0044h-005Fh
Motherboard resources
0060h-0060h
Motherboard resources
0061h-0061h
System speaker
0062h-0063h
Motherboard resources
0064h-0064h
Motherboard resources
0065h-006Fh
Motherboard resources
0070h-0071h
System CMOS/real time clock
0072h-007Fh
Motherboard resources
0080h-0080h
Motherboard resources
0081h-0083h
Direct memory access controller
0084h-0086h
Motherboard resources
0087h-0087h
Direct memory access controller
0088h-0088h
Motherboard resources
0089h-008Bh
Direct memory access controller
008Ch-008Eh
Motherboard resources
008Fh-008Fh
Direct memory access controller
0090h-009Fh
Motherboard resources
00A0h-00A1h
Programmable interrupt controller
00A2h-00BFh
Motherboard resources
00C0h-00DFh
Direct memory access controller
00E0h-00EFh
Motherboard resources
00F0h-00FFh
Numeric data processor
01F0h-01F7h
Primary IDE Channel
0274h-0277h
ISAPNP Read Data Port
0279h-0279h
ISAPNP Read Data Port
Содержание MI889
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