Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!hp4nl!ruuinf!praxis!ttavolij
From: ttavolij@praxis.cs.ruu.nl (Thomas Tavoly)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Hard disk transfer rates
Keywords: Big, mean, fast & shiny controllers
Message-ID: <3769@ruuinf.cs.ruu.nl>
Date: 11 Sep 90 16:13:25 GMT
Sender: news@ruuinf.cs.ruu.nl
Lines: 43

In article <14330@cbmvax.commodore.com> daveh@cbmvax.commodore.com (Dave
Haynie) writes:

[Loadsa-stuff deleted]

>
>Typical SCSI devices use the asynchronous transfer mechanism, which is limited
>to about 1.5 MegaBYTES per second.  Synchronous SCSI, which uses a clock
>rather than a handshake to clock its data, runs at a peak of 4-5 MegaBYTES
>per second.  Currently, you won't find actual disk drives that can get data
>off their platters much faster than the 1.5 MegaBYTES per second of the
>asynchronous SCSI, and most are slower.
>

1. Actually I read something about the IVS Trumpcard Professional version
which will achieve a transfer rate of 1.8 MBytes/sec. Rumour has it that
this card will be out soon (what? Maybe 1992? ;-). Is this with a stock
68k Amiga or some '030? I believe that the method employed here is using
a 16 bit wide bus (dubbed SCSI II), instead of the former 8 bits.
No info on whether it uses DMA or not, but probably yes.

2. Does anyone know of the transfer rates achieved by the GVP Series II SCSI
controller as advertised on page 7 of AmigaWorld September?
It's rather more expensive for me to call to the States than seeking the (free)
advice of my fellow Amigos...

[and other stuff deleted]

On a more brighter note, would you believe this one:
I told a friend, also on the net, that I would be upgrading my A500 (yes
the 3000 is still beyond my reach...) with 2 MB's. He then exclaimed in
horror: "Oh my God, then it will be bitching in stereo !!" :) ;)

BTW, I'll be on the Koeln '90 Ami-expo too, look for that handsome - oh well
you know - :-) Does someone know whether Mr. MB will be there? Should be
an interesting discussion if I met him. I would love to exchange views on
several subjects.

Yes, I know I should have posted this to c.s.a. but the thread was here,
besides there are 2 serious questions in there.

M&M's: melt in your mouth, not on your keyboard (except if it's an Amiga,
because they are sooo hot!)