[net.micro.pc] More Than 640K RAM on a Xerox 6064/

guzzi@uiucdcsb.CS.UIUC.EDU (02/13/86)

	If the  Xerox 6064 PC is the same as the ATT 6300 and NOT the
6300+, then you can only put 64k chips in the second bank of memory to get
the 640k maximum.  The 6300+ uses a 80286 and can handle up to 7meg of
memory, but I think MS-DOS still only recognizes 640k.

		      --Mark Guzzi
			University of Illinois at Urbana-Champaign
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gmv@cbuxc.UUCP (Mike Vrbanac) (02/14/86)

> 	If the  Xerox 6064 PC is the same as the ATT 6300 and NOT the
> 6300+, then you can only put 64k chips in the second bank of memory to get
> the 640k maximum.  The 6300+ uses a 80286 and can handle up to 7meg of
> memory, but I think MS-DOS still only recognizes 640k.
> 		      --Mark Guzzi
The 6300+ can handle 16meg of memory, just like any other 80286. The reason
for the published 7meg restriction has to do with how many memory expansion
cards will fit in the three 16-bit bus slots. With 256k memory chips and
one meg on the motherboard and 2meg each on three exp. boards yields 7meg.
However, AT&T makes 1megabit chips and at some point in the future you will
be able to have a 16meg PLUS.
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