B-2 User’s ManualB.2 I/O Address MapAddress Range Device000 - 00F020 - 021040 - 043048 - 04B060 - 064070 - 071080 - 08F0A0 - 0A10C0 - 0DF170 - 177178, 17A1F0 - 1F73F6, 3F7220 - 22F, 240 - 24F300 - 301, 330 - 331370 - 371, 388 - 38F530 - 537, E80 -E87278 - 27F2E8 - 2EF2F8 - 2FF378, 37A3BC - 3BE3B4, 3B5, 3BA3C0 - 3C53C6 - 3C93C0 - 3CF3D0 - 3DF3E0 - 3E13E8 - 3EF3F0 - 3F73F8 - 3FFCF8 - CFFDMA controller-1Interrupt controller-1Timer 1Timer 2Keyboard controller 3880L chip selectReal-time clock and NMI maskDMA page registerInterrupt controller-2DMA controller-2CD-ROMM7101 registersHard disk selectAudio (option)Audio (option)Audio (option)Audio (option)Parallel port 3COM 4COM 2Parallel port 2Parallel port 1Video subsystemVideo DACEnhanced graphics displayColor graphics adapterPCMCIA controllerCOM3Floppy disk controllerCOM 1PCI configuration register