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ECB-865
ECB-865 User’s Manual 91
I/O – Map
Certain I/O addresses are subject to change during boot as PnP managers may relocate
devices or functions. The addresses shown in the table are typical locations.
I/O Port Description Note
0000h-000Fh Direct memory access controller
0010h-001Fh
Motherboard resources
0020h-0021h Programmable interrupt controller
002Eh-002Fh 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-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
0094h-009Fh Motherboard resources
00A0h-00A1h Programmable interrupt controller
00A2h-00BFh Motherboard resources
00C0h-00DFh Direct memory access controller
00C0h-00DEh Direct memory access controller
00E0h-00EFh Motherboard resources
00F0h-00FFh Numeric data processor
0170h-0177h Secondary Ultra ATA Controller
0170h-0177h Intel(R) 82801BA Ultra ATA Storage Controller - 244B
01F0h-01F7h Primary Ultra ATA Controller
01F0h-01F7h Intel(R) 82801BA Ultra ATA Storage Controller - 244B
02F8h-02FFh Communications Port (COM2)
0376h-0376h Secondary Ultra ATA Controller
0376h-0376h Intel(R) 82801BA Ultra ATA Storage Controller - 244B
0378h-037Fh Printer Port (LPT1)
03B0h-03BBh Intel(R) 82815 Graphics Controller