Yokemate of Keyboards
Posts: 12021 from 2003/5/22
> 32 bit gives us access to 4GB, not 1.5GB. The 1.5GB limit is a function of AOS' 31 bit
> addressing (and MorphOS actually uses 2GB, the higher memory is used by the OS).
The address space between 1.5 and 2.0 GiB is used to map and access the memory of on-board and expansion hardware. That's why the OS can't use it as system RAM and it's also why 32-bit addressing would give us access to 3.0 to 3.5 GiB system RAM instead of the entire 4 GiB.