6-6
Compaq Professional Workstation SP750 Maintenance and Service Guide
Table 6-4
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 (second 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)
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