7-6
Compaq Deskpro Workstation AP250 Maintenance and Service Guide
Compaq Confidential – Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: h-ch7 Physical and Operating Specifications.doc Last Saved On: 10/4/99 4:34 PM
Table 7-4
System I/O
continued
I/O Address (Hex)
System Function (Shipping Configuration)
1F8 - 1FF
Unused
200
Unused
201
Unused
202 - 21F
Unused
220 - 22F
Business audio (default; alternate = 230h, 240h, 250h)
230 - 277
Unused
278 - 27F
Reserved parallel port
280 - 2E7
Unused
2E8 - 2EF
Reserved serial port
2F0 - 2F7
Unused
2F8 - OFF
Modem (COM 2)
300 - 317
Unused
318 - 319
Unused
31A - 36F
Unused
370 - 377
Reserved (second diskette drive)
378 - 37F
Parallel port (primary)
380 - 387
Unused
388 - 38B
FM synthesizer - OPAL
38C - 397
Unused
398 - 399
Super I/O index/data (default; alternate = 26Eh, 15Ch, 02Eh)
39A - 3AF
Unused
3B0 - 3BB
MDA, EGA/VGA
3BC - 3BF
Reserved (parallel port)
3C0 - 3DF
EGA/VGA
continued