Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ukma!rutgers!apple!oliveb!amiga!jimm
From: jimm@amiga.UUCP (Jim Mackraz)
Newsgroups: comp.sys.amiga.tech
Subject: Re: New 6.0 2500 Hates 68000 Mode!
Message-ID: <3801@amiga.UUCP>
Date: 5 May 89 03:02:49 GMT
References: <576@dialog.UUCP> <788@manta.NOSC.MIL>
Reply-To: jimm@cloyd.UUCP (Jim Mackraz)
Organization: Commodore-Amiga Inc, Los Gatos CA
Lines: 39

In article <788@manta.NOSC.MIL> dwi@manta.nosc.mil.UUCP (Steve Stamper) writes:
)The problem with my rev 6 system was the 16 bit expansion RAM board
)I had, 8-up!.  It was not compatible with the rev 6 amiga so
)any pgm which used memory there crashed.  It may have been my individual
)8-up! board, it ran in all rev 4.X machines.  Also some programs
)with bugs that were non fatal in 512k CHIP ram now are fatal in
)1M CHIP RAM.
)
)-Roger

Note that if a program ever specifically asks for MEMF_FAST, and there
is no non-chip ram, that allocation will fail.  It is best not to specify
memory type if you don't need chip ram, so that you will get FAST if
available, but CHIP, if not.

The 1MB chip system is the first time in a long time that there is
not fast ram on board, first ever if the program "requires 1MB".

So, programmers: beware: MEMF_FAST is probably NEVER appropriate (since the
memory might not be particularly fast, anyway).

Rev 6 users: once you get some fast memory in there that doesn't break,
you should be OK, and we'd like to hear if there are software problems
on Rev 6 or other 1MB chip configurations if sufficient fast ram is
present.

I recommend populating the 2620 board.  It IS populated?  Well, that's
different: somebody must be cheating on the high address byte.

Leap all over the software vendor: have them contact C-A if they think
the problems are not their fault ... ;^)

	jimm

-- 
Jim Mackraz, I and I Computing	   	"He's hidden now, but you can see
{cbmvax,well,oliveb}!amiga!jimm          The bubbles where he breathes."
							- Shriekback
Opinions are my own.  Comments are not to be taken as Commodore official policy.