Article View: comp.sys.atari.st
Article #28785Cartridge Port R/W
From: Mark Rhyner
Date: Mon, 19 Oct 1987 15:42
Date: Mon, 19 Oct 1987 15:42
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1638 bytes
I am working on a school project (U of AZ, ECE Dept) which involves using the
cartridge port to support a graphics card. I am using OSK as the operating
system for this project.
I lost the article in which someone (Ashwin, Moshe, or Jawar?) stated how they
implemented writing to the cartridge port. I would like to follow that
implementation and support it as a "de facto" standard, i.e., clock to pin x,
AS to pin y, etc.
I am making a modification to the implementation - I believe that he was
writing to $3FFFFF. I am going to make the I/O port both read and write at
$4FFFFF or above. I want to do this to avoid a potential conflict between the
port and future memory expansion up to 4 megs. Any thoughts on this?
I would appreciate if the person in question could email the info contained in
that article to:
iseic.ea@simtel20.arpa
I need the info as quickly as possible in order to complete this portion of
the project this weekend (24-25 OCT) -- the end of the semester draws near!
I appreciate the help. Mark Rhyner
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!seismo!sundc!sun!decwrl!ucbvax!SIMTEL20.ARPA!ISEIC.EA From: ISEIC.EA@SIMTEL20.ARPA (Mark Rhyner) Newsgroups: comp.sys.atari.st Subject: Cartridge Port R/W Message-ID: <12343746139.19.ISEIC.EA@SIMTEL20.ARPA> Date: Mon, 19-Oct-87 11:42:41 EDT Article-I.D.: SIMTEL20.12343746139.19.ISEIC.EA Posted: Mon Oct 19 11:42:41 1987 Date-Received: Tue, 20-Oct-87 20:51:00 EDT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 23