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System I/O Address Map
Address Range
(hex)
Description
0000h - 000Fh 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 Standard 101/102-key or Microsoft Natural Keyboard
0061h-0061h System speaker
0062h-0063h Motherboard resources
0064h-0064h Standard 101/102-key or Microsoft Natural Keyboard
0065h-006Fh Motherboard resources
0070h-0073h System CMOS/real time clock
0074h-007Fh Motherboard resources
0080h-0090h Direct memory access controller
0091h-0093h Motherboard resources
0094h-009Fh Direct memory access controller
00A0h-00A1h Programmable interrupt controller
00A2h-00BFh Motherboard resources
00C0h-00DFh Direct memory access controller
00E0h-00EFh Motherboard resources
00F0h-00FFh Numeric data processor
0170h-0177h Secondary IDE controller (dual FIFO)
0170h-0177h Intel 82371AB/EB PCI bus master IDE controller
01F0h-01F7h Primary IDE controller (dual FIFO)
01F0h-01F7h Intel 82371AB/EB PCI bus master IDE controller
0290h-0297h Motherboard resources
02F8h-02FFh Communications port (COM2)
0376h-0376h Secondary IDE controller (dual FIFO)
0376h-0376h Intel 82371AB/EB PCI bus master IDE controller
0378h-037Bh Printer port (LPT1)
03B0h-03BBh Rage 128 Pro 4XL (English)
03C0h-03DFh Rage 128 Pro 4XL (English)