Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!killer!texbell!merch!cpe!hal6000!trsvax!uhclem
From: uhclem@trsvax.UUCP
Newsgroups: comp.sys.tandy
Subject: Re: Tandy 6000 RAM Swap driver
Message-ID: <193300095@trsvax>
Date: 2 Feb 89 14:58:00 GMT
References: <165@tls.UUCP>
Lines: 28
Nf-ID: #R:tls.UUCP:165:trsvax:193300095:000:1376
Nf-From: trsvax.UUCP!uhclem    Feb  2 08:58:00 1989


<>
B>	   Simply reversing the 'From' address doesn't seem to work.
B>	   (Better still - "Frank, you there?")
Yes, I have responded via private mail.

B>	2. Does anybody have a public domain version of a RAM Swap
B>	driver which will use >1Meg RAM? I have 9Meg of RAM boards
B>	wired into my 6000 and would like to use them somehow. I DO
To save the network excess gas, I will respond briefly here.  You can't
put 9 meg in due to the memory address space being restricted to 7 Meg (plus
perhaps 512K).  This is not a 68k restriction.  It is a design restriction
of the Model 16/6000 which divided the 16Meg into two address zones.  One
bypasses the offset and limit registers (USER) and the other doesn't (SYSTEM).
Take away another portion of a Meg for the memory-mapped I/O space and you are
at 7 Meg.  Besides the provided power supply should be smoking by now, unless
perhaps you are using someone else's box.

<This information is provided by an individual and is not nor should be
 construed  as  being  provided  by  Radio  Shack or Tandy Corp.  Radio
 Shack/Tandy Corp has no obligation to support the information provided
 in  any way.  And they won't.  But if you wrote a MS-DOS emulator, you
 might get their attention.>
						
					"Thank you, Uh Clem."
					Frank Durda IV @ <trsvax!uhclem>
				...decvax!microsoft!trsvax!uhclem
				...sys1!hal6000!trsvax!uhclem