IBM-PC/ATのI/O port address

000-00F i8237 DMA Controller 1
010-01F 予約
020-03F i8259A Programmable Interrupt Controller (master)
040-05F i8254 Programmable Interval Timer
060-06F i8042 Keyboard Controller
080-09F 74LS612 DMA Page Register
0A0-0BF i8259A Programmable Interrupt Controller (slave)
0C0-0DF i8237 DMA Controller 2
0E0-0EF 予約
0F0-0FF i80x87 Coprocessor
100-16F 予約
170-17F Hard Disk 1
180-1EF 予約
1F0-1FF Hard Disk 0
200-20F Game Port
210-26F 予約 (220 adlib, Sound Blaster)
270-27F Parallel Port 3
280-2AF 予約
2B0-2DF EGA
2F0-2F7 予約
2F8-2FF Com 1
300-31F Prototype Card
330     Sound Blaster MPU-401
338     OPL-2/OPL-3 FM
340-35F 予約
360-36F PC Network
370-37F Parallel Port 2
380-38F SDLC Adapter
390-39F Cluster Adapter
3A0-3AF SDLC Adapter
3B0-3BB MC6845 MDA
3BC-3BF Parallel Port 1
3C0-3CF EGA/VGA
3D0-3DF CGA
3E0-3EF 予約
3F0-3F7 uPD765 Floppy Disk Controller
3F8-3FF COM 0