22 Apr
2007
22 Apr
'07
3:14 a.m.
The 640K barrier was due to the location of the memory map for CGA graphics
IIRC. If you were running monochrome you could squeeze a little more ram
out of the system IIRC.
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org]
On Behalf Of Ensor
Sent: Friday, April 20, 2007 8:54 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: The 640k "barrier" (was: Re: cctalk Digest, Vol 44, Issue 54)
It wasn't the only system. I believe that the
VIsual Commuter
could also be expanded past 640K in the base area--and it was
almost PC-compatible.
ISTR that a lot (if not all) of the early 8086/88 machines, which weren't
IBM clones, could be expanded well past 640K.
In fact, the more I think about it, ISTR that the PC was unusual in being
limited to 640K....
I definitely recall having 896K in one of my Sirii and my Apricot Xi.
TTFN - Pete.