Compaq 279362-002 manual System I/O Addresses

Specifications

Table 6-12

System I/O Addresses

I/O Address (hex) System Function (shipping configuration)

000–00F	DMA controller no. 1
010–01F	Unused
020–021	Interrupt controller no. 1
022– 024	Opti chipset configuration registers
025–03F	Unused
02E–02F	87334 “Super IO” configuration for CPU
040–05F	Counter/timer registers
044–05f	Unused
060	Keyboard controller
061	Port B
062–063	Unused
064	Keyboard controller
065–06F	Unused
070–071	NMI enable/real time clock
072–07F	Unused
080–08F	DMA page registers
090–091	Unused
092	Port A
093–09F	Unused
0A0–0A1	Interrupt controller no. 2

Maintenance and Service Guide 6–13