interpret this BIOS

[reg at dwf.com]

Ive done some google scans (and looked for documentation
in /usr/share/doc and /usr/src/linux/Documentation) but
dont find the key to interpreting what physical memory
is beeing seen by the following BIOS entries:

BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009e800 (usable)
 BIOS-e820: 000000000009e800 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000002fffc000 (usable)
 BIOS-e820: 000000002fffc000 - 000000002ffff000 (ACPI data)
 BIOS-e820: 000000002ffff000 - 0000000030000000 (ACPI NVS)
 BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)

I would guess that the 'usable' lines are probably the 
ones I should be looking at, but if thats the case, then
I cant get the sizes to come out right.

Can someone explain what Im seeing here so I can interpret
it on another machine.


-- 
                                        Reg.Clemens
                                        reg at dwf.com