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From: dltaylor@cns.SanDiego.NCR.COM (Dan Taylor)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Bridgeboard and Fast Memory?
Message-ID: <881@cns.SanDiego.NCR.COM>
Date: 1 Apr 91 20:02:43 GMT
References: <19620015@hp-lsd.COS.HP.COM>
Organization: NCR Corp. SE-San Diego
Lines: 16

In <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?

The BB shared memory is 1/2 Meg.  You can have more than 6-meg, but
compensating for that 1/2 Meg is tough.  I suppose an A2091, with 1Meg,
and a second with 1/2 Meg would do it ;-).  Actually, I haven't been
able to find out if the disk interface on the A2091 takes up ANY expansion
space, although I'm sure the RAM on it will.

Anyway, the 6-Meg number comes from the difficulty of find 1-1/2 meg
expansion RAM.  What happens if you overstuff the expansion space, is
that the overflow devices, whichever they are, are ignored.

Dan Taylor