Intel Raptor AT manual Map, Address hex Description

Raptor AT – Installation Guide

I/O Map

Address (hex)	Description
0000-000F	DMA 1
0020-0021	Interrupt Controller 1
0040	Timer/Counter 0
0041	Timer/Counter 1
0042	Timer/Counter 2
0043	Timer Control Word
0060	Keyboard Controller Byte _ Reset IRQ
0061	NMI Status and Control
0070, bit 7	NMI enable
0070, bits 6:0	RTC Index
0071	RTC Data
0072	RTC Extended Index
0073	RTC Extended Data
0080-008F	DMA page registers / POST code display also
	located at 0080h
0092	Port 92
00A0-00A1	Interrupt Controller 2
00B2-00B3	APM control
00C0-00DE	DMA 2
00F0	Coprocessor Error
0110	Watch-Dog Timer (default)
0170 _ 0177	Secondary IDE channel
01F0 _ 01F7	Primary IDE channel
029x	LM79
0278-027F	LPT2 (if selected)
02E8-02EF	COM4 (if selected)
02F8-02FF	COM2 (default)
0310	Watch-Dog Timer (if selected)
0376	Secondary IDE channel command port
0377	Floppy channel 2 command
0377, bit 7	Floppy disk change, channel 2
0377, bits 6:0	Secondary IDE channel status port
0378-037F	LPT1 (default)
03B4-03B5	Video (VGA)
03BA	Video (VGA)
03BC-03CD	LPT3 (if selected)
03C0-03CA	Video (VGA)
03CC	Video (VGA)
03CE-03CF	Video (VGA)

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