Compaq AP500 - Manual (Page 138)

7-5
Compaq Professional Workstation AP500 Maintenance and Service Guide
System I/O Continued
I/O Address (Hex) System Function (Shipping Configuration)
201 Audio
202 - 21F Unused
220 - 22F Audio (Alternate = 240- 24F, 260 - 26F, or 280 - 28F)
230 - 273 Unused
274 - 277 ISA PnP
278 - 27F Reserved parallel port
280 - 2E7 Unused
2E8 - 2EF Reserved serial port
2F0 - 2F7 Unused
2F8 - 2FF Serial port
300 - 32F Unused
330 - 331 Audio
332 - 36F Unused
370 - 377 Reserved - fixed disk controller
378 - 37F Parallel port (primary)
380 - 387 Unused
388 - 38B Audio
38C - 397 Unused
398 - 399 Motherboard
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)