Acer TravelMate 7300 manual System Memory Map, Address Map, Address Range Definition Function

Appendix

System Memory Map

Address Range	Definition	Function
000000 - 09FFFF	640 KB memory	Base memory
0A0000 -	128 KB video RAM	Reserved for graphics
0BFFFF		display buffer
0C0000 -	Video BIOS	Video BIOS
0CBFFF
CC000 - CDFFF	System CardBus
CE000 - CFFFF	MiniDock CardBus
0F0000 - 0FFFFF	64 KB system BIOS	System BIOS
10000 - 7FFFF	Extended memory	Onboard memory
80000 - 27FFF		SIMM memory
FE0000 -	256 KB system	Duplicate of code
FFFFFF	ROM	assignment at 0E0000-
		0FFFFF

I/O Address Map

Address Range		Device
000	- 00F	DMA controller-1
020	- 021	Interrupt controller-1
02E - 02F		NS87338 peripheral controller
040	- 043	Timer 1
048	- 04B	Timer 2
060	- 06E	Keyboard controller chip select
070	- 071	Real-time clock and NMI mask
080	- 08F	DMA page register
0A0 - 0A1		Interrupt controller-2
0C0 - 0DF		DMA controller-2
1F0 - 1F7		Hard disk select
3F6 - 3F7		Hard disk select
170	- 177	CD-ROM select
376	- 377	CD-ROM select
220	- 22F	Audio
240	- 24F	Audio - default

114