7. Appendix
I/O Port Addresses
Table 7.1. I/O Port Addresses < 1 / 2 >
ADDRESS(HEX) Description Remark
000-00F DMA controller 1 (slave) ch0 - 3 (8-bit transfer)
010-01F Reserved for system
020-03F Interrupt controller 1 (master)
040-05F Timer
060-06F Keyboard controller
070-07F RTC, NMI mask
080-09F DMA page register
0A0-0BF Interrupt controller 2 (slave)
0C0-0DF DMA controller 2 (master) ch5 - 7 (16-bit transfer)
0E0-0FF Reserved for system
100-12F Available to user
140-16F Available to user
170-17F IDE hard disk controller Secondary
180-18F Reserved for system
190-1DF Available to user
1E8-1EF Reserved for system
1F0-1FF IDE hard disk controller Primary
200-277 Available to user
278-27F Reserved for parallel port LPT2
280-2E7 Available to user
2E8-2EF Reserved for serial port COM4(RS485, factory setting)
2F0-2F7 Available to user
2F8-2EF Serial port COM2
300-35F Available to user
370-375 Reserved for system
376-377 IDE hard disk controller Secondary
378-3AF Reserved for parallel port LPT1(factory setting)
3B0-3BB Reserved for system
3BC-3BF Reserved for parallel port LPT3
3C0-3DF Reserved for system
3E0-3E7 PCMCIA
3E8-3EF Serial port COM3(Touch panel, factory setting)
3F0-3F7 FD controller
3F8-3FF Serial port COM1
4D0-4DF Reserved for system
86
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