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Article #7634

Re: Zorro II memory on 3000?

#7634
From: NIKOLAJ RICHERS
Date: Sun, 15 Nov 1992 20:16
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1426 bytes
In article <1992Nov13.074541.13733@ncsu.edu>, hgm@ncsu.edu (Hal G. Meeks) writes...
>I have a 2052 memory card sitting here, waiting for something to do. I own a
>3000, which could use more memory. I know the 16bit ZorroII memory card will
>work in the 3000, but what kind of penalty am I facing in terms of
>performance by using it?
> 
>--hal
> 
>-- 
>hgm@ncsu.edu   "This is a beta signature, and as such, no guarantee can be
>	        made as to the worth and durabilty of this text."

(This is my first attempt at writing a reply on USENET, so please bear with me).

As far as I understand it, accessing 16-bit wide memory with a 32-bit will 
effectively halve your performance, since the processor has to fetch 32-bit each
data segment in two 16-bit segments, doubling the amount of CPU cycles needed 
to access memory (cf. Amazing Amiga, 6(11) November 1991, 67.)

Nikolaj 
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References: <1992Nov13.074541.13733@ncsu.edu>

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From: nrichers@trentu.ca (NIKOLAJ RICHERS)
Subject: Re: Zorro II memory on 3000?
Message-ID: <15NOV199215164575@trentu.ca>
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