Specifications

Table 6-7

System I/O Addresses (Continued)

I/O Address (hex)

System Function (shipping configuration)

 

 

0A2 - 0BF

Unused

 

 

0C0 - 0DF

DMA controller no. 2

 

 

0E0 - 0EF

Unused

 

 

0F0 - 0F1

Coprocessor busy clear/reset

 

 

0F2 - 0FF

Unused

 

 

 

100

- 16F

Unused

 

 

 

170

- 177

Secondary fixed disk controller

 

 

 

178

- 1EF

Unused

 

 

1F0 - 1F7

Primary fixed disk controller

 

 

1F8 - 200

Unused

 

 

 

201

 

Joystick (decoded in ESS1688)

 

 

 

202

- 21F

Unused

 

 

 

220

- 22F

Entertainment audio

 

 

 

230

- 26D

Unused

 

 

26E - 26

Unused

 

 

 

278

- 27F

Unused

 

 

 

280

- 2AB

Unused

 

 

2A0 - 2A7

Unused

 

 

2A8 - 2E7

Unused

 

 

2E8 - 2EF

Reserved serial port

 

 

 

Maintenance and Service Guide

6–13