Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!bu-cs!purdue!decwrl!decvax!tektronix!percival!parsely!agora!billsey
From: billsey@agora.UUCP (Bill Seymour)
Newsgroups: comp.sys.amiga
Subject: Re: Supra HD
Message-ID: <1305@agora.UUCP>
Date: 31 Dec 88 19:32:41 GMT
References: <446@tolsun.oulu.fi:
Organization: Advanced Solutions, Hillsboro, OR
Lines: 42

From article <446@tolsun.oulu.fi:, by nix@tolsun.oulu.fi (Tero Manninen):
: I am a happy owner of Supra 30M Hard Disk but the software
: that came with the drive is version 4.3.  So, what are the
: differences with 4.3 and 5.1 software ??

	The major differences between the two versions is the support of
the standard format for partition info on the drive and a faster read on
non-dma transfers for some SCSI controllers. There are also more different
drive manuafcturers supported. The new partition information format helps
mostly with autoboot, but does allow more flexability in setting parameters
for your drive.

: I have read something about random Gurus with fastmem and
: 4.3 software. Since I am planning to add extra 512k to my
: A500 it would be nice to know about possible problems now.

	I haven't had any problems with random GURUs with fastmem with either
the 4.3 software or the new stuff...

: BTW, is 5.1 soft faster than 4.3 with A500 (no dma transfers ?) ?

	It can be... Try adding a -s to your SupraMount with 5.0 or later,
that turns off the check for byte ready whicvh speeds up reads by quite a
bit. Note that this causes a hung drive with the system locked if your drive/
controller combination does *always* have the byte ready for transfer when 
you want it. I've had some problems using the -s on Adaptec 4070s, but none on
Adaptec 4000s, OMTI 352(0|7), Seagate embedded SCSI drive or Miniscribe
embedded SCSIs...

: -	-	-	-	-	-	-	-	-
: 		MERRY XMAS AND HAPPY NEW YEAR
: 		     TO ALL USENETTERS
: -								-
: 		  Tero Manninen,
: 		    nix@tolsun.oulu.fi
: 		      ..enea!kth!draken!tut!tolsun!nix
: -	-	-	-	-	-	-	-	-
-- 
     -Bill Seymour             ...tektronix!reed!percival!agora!billsey
                               ...tektronix!sequent!blowpig!billsey
     Creative Microsystems   Northwest Amiga Group    At Home Sometimes
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