NetNews Usenet Archive 1992 #31/NN_1992_31.iso/spool/comp/sys/amiga/misc/19216

Internet Message Format | 1992-12-30 | 1.6 KB

Path: sparky!uunet!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!network.ucsd.edu!sdcc12!icogsci1!cg18ffl
From: [e-mail] (Spumoni...)
Newsgroups: comp.sys.amiga.misc
Subject: 3000 performance
Message-ID: <[e-mail]>
Date: 30 Dec 92 08:17:56 GMT
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Organization: University of California, San Diego
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    I am a proud new owner of an A3000/25 with 6 megs of mem and a 52 meg
HD. I was wondering about those various ways one would use to squeeze a bit
more speed out of the system (not that I'm complaining, mind you. :) ) I've
heard of something referring to 'VBR' which I assume stands for 'Vector Base
Register' and has something to do with Exec. At any rate, I've heard of a
patch for the VBR which was supposed to speed up the system somewhat. What
exactly is this? My memory is furry.
    Another trick I've heard of is to map the ROM (2.04) to 32 bit Fast
Mem. I'm not sure how to do this. Does it involve using SetCPU (which I don't
have right now)? What kind of advantages does this offer?
    Sysinfo (other than confirming that I'm running at an already healthy
speed) also 'says' (I'm not sure of the accuracy) that the Ramsey, Buster, and
DMAC chips are all the first revision. According to the Sysinfo (3.01) docs,
these chips had some bugs in them. Would these bugs affect any attempts to
play with the aforementioned settings? A nuclear meltdown?

Thanks in advance for any suggestions. E-Mail preferred; however, the choice is
up to you. Aren't I nice.


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