casebolt%esdc.span@fedex.msfc.nasa.gov (11/09/89)
From: FEDEX::"amiga-relay-request@louie.udel.edu" 7-NOV-1989 11:37:09.48
To: ESDC$SPAN::CASEBOLT
CC:
Subj: A2000 $C000... memory
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From: Rich Carreiro <rlcarr@athena.mit.edu>
Newsgroups: comp.sys.amiga.tech
Subject: A2000 $C000... memory
Message-ID: <15722@bloom-beacon.MIT.EDU>
Date: 7 Nov 89 16:37:20 GMT
Organization: the Fire Raymond Berry Club
To: amiga-relay@udel.edu
Sender: amiga-relay-request@udel.edu
Hi!
I have an A2000, Rev 6.2 motherboard (thus Fatter Agnus and 1MB MEMF_CHIP),
and a Supra2000 RAM board with 2meg in it.
My question:
Do I have to run FastMemFirst in startup-sequence?
If I remember correctly, the $C00000 memory was originally slow-fast RAM since
the original Agnus could only address the 1st 512K of the standard 1 meg.
The Fatter Agnu can address it all, giving 1 meg MEMF_CHIP. However,
does the system still default to using $C00000 first, or does it know
enough to go to the true fast RAM?
--
Rich Carreiro - Most Biased Boston Celtics Fan! Get well soon, Johnny Most!
ARPA: rlcarr@space.mit.edu Welcome back, Larry!
UUCP: ...!mit-eddie!space.mit.edu!rlcarr McHale, 6th man supreme!
BITNET: rlcarr@space.mit.edu "Follow through!"
Get the latest Amiga World Magizine. It has an article on the memory map and
the new Fat Agnus chip...
Richard Casebolt
205-544-2966