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From: leavens@atari.UUCP
Newsgroups: comp.sys.atari.st
Subject: Re: Adding another Hard Drive??
Message-ID: <679@atari.UUCP>
Date: Fri, 20-Mar-87 13:39:14 EST
Article-I.D.: atari.679
Posted: Fri Mar 20 13:39:14 1987
Date-Received: Sun, 22-Mar-87 22:55:24 EST
References: <694@viper.UUCP>
Organization: Atari Corp., Sunnyvale CA
Lines: 44

in article <694@viper.UUCP>, john@viper.UUCP (John Stanley) says:
> 
> In article <1000@imagen.UUCP> turner@imagen.UUCP (D'arc Angel) writes:
>  >in article <685@viper.UUCP>, john@viper.UUCP (John Stanley) says:
>  >+ In article <659@atari.UUCP> dyer@atari.UUCP (Landon Dyer) writes:
>  >+  >one drive per controller.  And naturally, Atari does not
>  >+  >encourage or condone such modifications to the hardware....
>  >+ 
>  >+ Well, I suppose that's suppost to be helpful??
>  >+ 
>  >+ People are asking serious questions about how to expand their storage
>  >+ and all you can say is "Atari doesn't encourage it...."?

>  >............    I have never
>  >seen, nor do i think that i will ever see, a company that encourages
>  >ramifications are that if the company in any way, shape, or form
>  >condones such behavior then they are liable for any damage done by
>  >the user. 

> The user who asked the original question was trying to get some advice
> on how to get two or more H-disks up and running on a single ST.  He did
> ask about the possibility of hacking-onto an existing Atari or Supra
> (don't remember which) drive, but that wasn't the main point...  He
> needs more disk space.


  You can, indeed, hook up more than one SH204 to an Atari ST, but it's a
pain.  You'll have to make your own hydra headed cable (two hard drive 
cables into one), that's the hard part.  The easy part is opening up your
second drive and flipping the drive unit select switch that's on the
board right next to the DMA plug.  Flip the switch to indicate that
it's drive 1, and not drive 0.  Then hook up both drives, and if you've
wired your cable right, you're done.

  A caveat, however--if you have an early ST, the DMA chip in the ST may
have trouble driving the loads of two SH204's.  This is why we don't
particularly recommend this option.


-- 
--alex @ Atari				  {sun,lll-lcc,imagen}!atari!dyer
BIX: alexl.          GEnie:ALEXLEAVENS    AtariCorp:(408)-745-2006

"Don't crush that dwarf, hand me the pliers."