PC Hardware A Beginner’s Guide

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Chapter 13: System Resources^299


I/O Address (hexadecimal) Size in Bytes Assigned To
0000 – 000F 16 Slave DMA controller chip
0010 – 001F 16 System
0060 – 0063 4 Keyboard
0064 – 0067 4 PS/2 port
00C0 – 00DE 32 Master DMA controller
0130 – 014F 32 SCSI host adapter
01F0 – 01F7 8 Primary IDE channel
0200 – 0207 8 Game port
0220 – 022F 16 Sound card
0270 – 0273 4 Plug-and-Play hardware
0278 – 027A 2 Parallel port (LPT2)
0280 – 028F 16 LCD Display
02E8 – 02EF 8 Serial Port—COM4
02F8 – 02FF 8 Serial Port—COM2
0300 – 031F 32 Network interface cards
0320 – 032F 16 Legacy hard disk controllers
0330 – 0331 2 MIDI interface
0360 – 036F 16 Network interface cards
(alternate)
0378 – 037A 2 Parallel port (LPT1)
03C0 – 03DF 32 VGA video display adaptor
03E0 – 03E7 8 PC Card (PCMCIA)
port controller
03E8 – 03EF 8 Serial Port—COM3
03F0 – 03F6 8 Floppy disk drive interface
03F8 – 03FF 8 Serial Port—COM1
0533 – 0537 4 Windows sound system
0678 – 067F 8 EPP parallel port
0CF8 – 0CFB 4 PCI data registers
FF00 – FF07 8 IDE bus mastering

Table 13-3. Commonly Used I/O Address Assignments

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