Dream Machine

[bobjack]

This is the mental image I got from the microsoft article discussing why 32 Bit windoz could not use the full 4 Gig of Main Memory. Reminds me of when BIOS and other slow memory items were shadowed to ram (years ago and win 3.11)..

|----------------Top of 4 Gig Mem-------------------|
.88 Gig Block Main Memory not used,
this "address area" is set aside (reserved) to address I/O
memory i.e. 512 meg video ram address' instead of the
uppermost .88 Gig block of Main Memory
The address' cannot cover the mapped in i/o memory
and the main memory at thesame time
|--------------------------------------------------------------|
|---------------Top of 3.12 Gig Mem -------------------|
|---This 3.12 Gig Band used for programs---------------|
|Bottom of 3.12 Gig Usable/4Gig Total Installed Gig Mem|[/I]

bobjack