Path: utzoo!attcan!uunet!cbmvax!daveh
From: daveh@cbmvax.commodore.com (Dave Haynie)
Newsgroups: comp.sys.amiga
Subject: Re: Benchmark:A3000 w/ AMAXII
Message-ID: <15178@cbmvax.commodore.com>
Date: 16 Oct 90 16:48:10 GMT
References: <1990Oct9.184447.4539@ee.rochester.edu> <15009@cbmvax.commodore.com> <28676@pasteur.Berkeley.EDU>
Reply-To: daveh@cbmvax.commodore.com (Dave Haynie)
Organization: Commodore, West Chester, PA
Lines: 27

In article <28676@pasteur.Berkeley.EDU> navas@cory.Berkeley.EDU writes:

>In article <15009@cbmvax.commodore.com> daveh@cbmvax.commodore.com (Dave Haynie) writes:
>>In article <1990Oct9.184447.4539@ee.rochester.edu> tombs@ee.rochester.edu writes:
>>>	A3000/25/50		MacIIci		MacIIcx			MAC+
>>>Dhrys/sec 2871(2717)			3736(3816)	(768.8)

>>The Dhrystone test doesn't use any floating point.  ...

>Hmmm...  Sure that this test was running in FAST and not CHIP memory?  That
>might just account for a few differences. You'll need something to soak
>up 1 to 2 megs BEFORE you try running the Dhrystone benchmark...

As a matter of fact, it probably isn't using Fast memory.  The current Mac OS
requires 24 bit addressing.  A3000 motherboard Fast memory lives in the
$07000000-$07ffffff range, which would be trouble for a Mac unless the
Readysoft folks were clever enough to map some of this Fast memory into 24
bit space by way of the MMU.  And if that's the case, it would require even
more cleverness to make that the first memory used -- Macs don't deal with
memory in quite as sophisticated a way as Amigas.

>David Navas                                   navas@sim.berkeley.edu

-- 
Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
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	Standing on the shoulders of giants leaves me cold	-REM