FabiaTech Corporation75¾ I/O Port Address MapEach peripheral device in the system is assigned a set of I/O port addresses, whichalso becomes the identity of the device. There is a total of 1K-port address spaceavailable. The following table lists the I/O port addresses used on the Industrial CPUCard.Address Device Description000h - 01Fh DMA Controller #1020h - 03Fh Interrupt Controller #1040h - 05Fh Timer060h - 06Fh Keyboard Controller070h - 073h Real Time Clock, NMI080h - 09Fh DMA Page Register0A0h - 0BFh Interrupt Controller #20C0h - 0DFh DMA Controller #20F0h Clear Math Coprocessor Busy Signal0F1h Reset Math Coprocessor170h - 177h IDE Interface2F8h - 2FFh Serial Port #2(COM2)376h PCI IDE Controller3B0h - 3BBh VGA Adapter3C0h - 3CFh VGA Adapter3F8h - 3FFh Serial Port #1(COM1)4D0h - 4D1h Motherboard Resource800h - 8FEh Motherboard ResourceA00h – A1Fh Motherboard ResourceCF8h – CFFh Motherboard ResourceE080 - E09Eh USB ControllerE400 - E4FEh Ethernet ControllerE800 - E8FEh Ethernet ControllerEC00 - EC1Eh USB ControllerFC00 - FC0Eh IDE Controller
