Starting Out with Your OmniBook Special Features I/O Addresses 60 and 64 Keyboard controller 70 and 71 RTC CMOS, bytes 0 to 127 74 and 76, re-mappable RTC CMOS, bytes 128 to 255 220-22F or 240-24F or 250-25F and 300-301 or 310-311 or 320-321 or 330-331 and 388-38B Sound 3F8-3FF Serial COM1 port 2F8-2FF Serial COM 2 port 3E8-3EF Serial COM3 port 2E8-2EF Serial COM4 port 3000-301F IrDA 378-37F Parallel LPT1 port and 778-77A in ECP mode 278-27F Parallel LPT2 port and 678-67A in ECP mode 3F2-3F7 (primary) Floppy drive 1F0-1F7 and 3F6-3F7 (primary) Hard-disk drive 1-23