Path: utzoo!mnetor!uunet!cbmvax!ulowell!ross
From: ross@swan.ulowell.edu (Ross Miller)
Newsgroups: comp.sys.amiga
Subject: Re: 512K expansion for A500
Message-ID: <5690@swan.ulowell.edu>
Date: 24 Mar 88 22:51:35 GMT
References: <919@rmi.UUCP> <26700010@ccvaxa>
Reply-To: ross@swan.ulowell.edu (Ross Miller)
Organization: University of Lowell, Computer Science Dept.
Lines: 27


In article <26700010@ccvaxa> jwilson@ccvaxa.UUCP writes:



>My Amy is a 500, and I have the A501 expansion.  The added 512k definitatly is
>fast ram at 0xC0000.  All performance monitors show 512k chip ram and 512k fast
>ram.  Even if they assume that max chip ram is 512k and that any more is fast, 
>I have gotten Gurus with memory locations > 0xC0000 ( usually from bugs in my 
>progs -- like divide by zero )


Ok, I've seen this same article three times, and I can't reply to the poster,
so hear goes.  The coprocessors can see this ram when a 1meg Agnus becomes
available.  Therefore this ram must deal with contention between the
coprocessors and the 68000 for bus cycles.  It is in a different place,
but it is not fast ram.  I have hear the term slowfastram used.  I can't
believe that the vocal gurus didn't reply to this.

							Ross


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