HP DC71XX, DX61XX manual 57

Processor/Memory Subsystem

Figure 3-3 shows the system memory map.

			4 GB
	FFFF FFFFh	High BIOS Area
	FFE0 0000h	DMI/APIC
		Area
	F000 0000h
		PCI
		Memory
		Area
			Top of DRAM
Main		IGC (1-32 MB)
		TSEG
Memory
Area		Main
	0100 0000h	Memory	16 MB
	00FF FFFFh
		Main
		Memory
	0010 0000h		1 MB
	000F FFFFh	BIOS
		Extended BIOS
DOS		Expansion Area
Compatibilty		Legacy Video	640 KB
Area
		Base Memory
	0000 0000h

✎All locations in memory are cacheable. Base memory is always mapped to DRAM. The next 128 KB fixed memory area can, through the north bridge, be mapped to DRAM or to PCI space. Graphics RAM area is mapped to PCI or AGP locations.

Figure 3-3. System Memory Map

Technical Reference Guide 361834-002 3-7