Compaq AP550 Compaq Professional Workstation AP550 Maintenance & Service G - Page 162
I/O Address Hex, System Function Shipping Configuration, MDA, EGA/VGA
UPC - 743172976857
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7-6 Compaq Professional Workstation AP550 Maintenance and Service Guide Table 7-4 System I/O continued I/O Address (Hex) 2F0 - 2F7 2F8 - 2FF 300 - 317 318 - 319 31A - 36F 370 - 377 378 - 37F 380 - 387 388 - 38B 38C - 397 39A - 3AF 3B0 - 3BB 3BC - 3BF 3C0 - 3DF 3E0 - 3E7 3E8 - 3EF 3F0 - 3F7 3F8 - 3FF System Function (Shipping Configuration) Unused Modem (COM 2) Unused Unused Unused Reserved (2nd diskette drive) Parallel port (primary) Unused FM synthesizer - OPAL Unused Unused MDA, EGA/VGA Reserved (parallel port) EGA/VGA Unused Reserved (serial port) Diskette controller Serial port (primary)
7-6
Compaq Professional Workstation AP550 Maintenance and Service Guide
Table 7-4
System I/O
continued
I/O Address (Hex)
System Function (Shipping Configuration)
2F0 - 2F7
Unused
2F8 - 2FF
Modem (COM 2)
300 - 317
Unused
318 - 319
Unused
31A - 36F
Unused
370 - 377
Reserved (2nd diskette drive)
378 - 37F
Parallel port (primary)
380 - 387
Unused
388 - 38B
FM synthesizer - OPAL
38C - 397
Unused
39A - 3AF
Unused
3B0 - 3BB
MDA, EGA/VGA
3BC - 3BF
Reserved (parallel port)
3C0 - 3DF
EGA/VGA
3E0 - 3E7
Unused
3E8 - 3EF
Reserved (serial port)
3F0 - 3F7
Diskette controller
3F8 - 3FF
Serial port (primary)