PC Memory maps (was: Re: 486 w/newer IDE drives)
cclist at sydex.com
Fri Nov 24 13:30:11 CST 2006
On 24 Nov 2006 at 14:07, Sean Conner wrote:
> The major problem with that is MS-DOS---it can't handle non-contiguous RAM
> and therefore there is no standard way to reserve or use memory in the upper
> 384K of the address space (well, for those PClones that followed the IBM
I seem to recall a few PCs with built-in CGA display adapters gave
one more contiguous memory than 640K by filling the space between
A000 and C000 with RAM. And many "not very compatible" PCs running
MS-DOS made the entire 1MB available.
Anyone with an old Visual Commuter want to verify this? I think that
the Commuter was one of the aforementioned.
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