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Compaq P 110 User Manual

Page 119

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6–14

Maintenance and Service Guide

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