Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!dsinc!bagate!cbmvax!cbmehq!cbmger!peterk
From: peterk@cbmger.UUCP (Peter Kittel GERMANY)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Bridgeboard and Fast Memory?
Message-ID: <1043@cbmger.UUCP>
Date: 2 Apr 91 17:51:05 GMT
References: <19620015@hp-lsd.COS.HP.COM>
Reply-To: peterk@cbmger.UUCP (Peter Kittel GERMANY)
Organization: Commodore Bueromaschinen GmbH, West Germany
Lines: 22

In article <19620015@hp-lsd.COS.HP.COM> davem@hp-lsd.COS.HP.COM (Dave K. Martin) writes:
>
>Why is 6-meg of fast ram the ideal configuration for an A-2000 with a
>bridgeboard?  Does it have to do with address conflicts on the Zorro buss 
>and the shared memory on the bridgeboard?
>
>I'm asking since my A-2000 now has 6-meg of fast, 1-meg chip and an XT bridge.
>What happens if I get another 2-megs of fast ram?  Nothing?  System slowdowns?
>Frequent visits from the Guru?

(Perhaps this should get included in the FAQs, so once again:)

There is only one 8-MB address space to be distributed among all those
autoconfig devices. If you spend all that space already for RAM, there
is no room for further additions. A bridgeboard reserves 512 KB of
autoconfig space, so it wouldn't fit in anymore. You wouldn't encounter
an error, the BB simply would stay quiet, you *NEVER* could bring it
to life!

-- 
Best regards, Dr. Peter Kittel  // E-Mail to  \\  Only my personal opinions... 
Commodore Frankfurt, Germany  \X/ {uunet|pyramid|rutgers}!cbmvax!cbmger!peterk