Path: utzoo!mnetor!uunet!mcvax!ukc!mupsy!liv-cs!unpowell
From: unpowell@csvax.liv.ac.uk
Newsgroups: comp.sys.atari.st
Subject: Re: Writing to the cartridge port.
Message-ID: <542@csvax.liv.ac.uk>
Date: 19 Apr 88 16:59:12 GMT
References: <8804132155.AA23202@ucbvax.Berkeley.EDU>
Lines: 28
Organisation: Computer Science CSVAX (VAX1), Liverpool University


In article <8804132155.AA23202@ucbvax.Berkeley.EDU>, 440488@UOTTAWA.BITNET (Doctor Who) writes:
> 
>   Recently I was browsing thu an ST magazine, Reset to be specific and I
> noticed an ad for a product by Alpha Systems called Megadisk. It is one
> megabyte of ram that plugs into the cartridge port.
>   But according to the infamous Abacus book ST Internals, (p96) writing
> to this address creates a bus error. They tried putting a ram disk in
> the port but without sucess.
> 
>   How did Alpha get around this so that the Megadisk would work with
> out creating bus errors?
> 
>                                             Doctor Who

	Who knows? One Meg seems a little optomistic as the ST only has
128K of address space available for the cartridge port. Where will this
extra memory go?

		Mark Powell

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 "...there's no success   JANET unpowell@uk.ac.lis.csvax
  like failure and        UUCP  {backbone}!mcvax!ukc!mupsy!lis-cs!unpowell
  failure's no success    ARPA  unpowell%csvax.lis.ac.uk@nss.cs.ucl.ac.uk
  at all..." B.Dylan

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