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7-4 Physical and Operating Specifications
Table 7-4
System I/O
I/O Address (Hex) System Function (Shipping Configuration)
000 - 00F DMA Controller # 1
010 - 01F Motherboard
020 - 03F Interrupt controller # 1
040 - 043 Counter/timer registers
044 - 04F Unused
050 - 052 Motherboard
053 - 05F Unused
060 Keyboard controller
061 Port B
062 - 063 Unused
064 Keyboard controller
065 - 06F Unused
070 - 071 NMI Enable/real-time clock
072 - 079 Motherboard
07A - 07F Unused
080 - 08F DMA Page registers
090 - 09F Motherboard
0A0 - 0BF Interrupt controller # 2
0C0 - 0DF DMA Controller # 2
0E0 - 0EF Unused
0F0 - 0FF Co-processor
100 - 15B Unused
15C - 15D Super I/O index/data register
15E - 16F Unused
170 - 177 Fixed disk controller
178 - 1EF Unused
1F0 - 1F7 Reserved - fixed disk controller
1F8 - 200 Unused
Continued