American Megatrends MB950, Руководство пользователя

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APPENDIX
MB950 User’s Manual 55
Appendix
A. I/O Port Address Map
Each peripheral device in the system is assigned a set of I/O port
addresses which also becomes the identity of the device. The following
table lists the I/O port addresses used.
Address Device Description
000h - 01Fh DMA Controller #1
020h - 03Fh Interrupt Controller #1
040h - 05Fh Timer
060h - 06Fh Keyboard Controller
070h - 07Fh Real Time Clock, NMI
080h - 09Fh DMA Page Register
0A0h - 0BFh Interrupt Controller #2
0C0h - 0DFh DMA Controller #2
0F0h Clear Math Coprocessor Busy Signal
0F1h Reset Math Coprocessor
1F0h - 1F7h IDE Interface
2E8h - 2FFh Serial Port #4(COM4)
2F8h - 2FFh Serial Port #2(COM2)
2B0 - 2DF Graphics adapter Controller
3C0 - 3CF EGA adapter
3D0 - 3DF CGA adapter
3E8h – 3EFh Serial Port #3(COM3)
3F8h - 3FFh Serial Port #1(COM1)