Path: utzoo!utgpu!water!watmath!clyde!bellcore!faline!thumper!ulysses!andante!mit-eddie!bloom-beacon!tut.cis.ohio-state.edu!mailrus!ames!eos!labrea!decwrl!hplabs!hp-sdd!ncr-sd!ncrcae!usceast!baldwin
From: baldwin@usceast.UUCP
Newsgroups: comp.sys.amiga.tech
Subject: Where are the fire buttons?
Keywords: Huh?  Hardware manual insufficient
Message-ID: <2558@usceast.UUCP>
Date: 2 Apr 88 04:32:35 GMT
Lines: 26
Posted: Fri Apr  1 23:32:35 1988

I'd like to thank everybody who responded to my posting about multiple
viewports ... the trick about calling MakeVPort () for each viewport
worked.

Now, I've got another problem.  I'm trying to read the joystick ports
(yes both of them) directly, and the hardware manual is very clear about
how to do this.

On page 8-5, the Hardware manual says, in reference to the fire buttons,

       Trigger-lines are read, for each of the controller ports, by
       reading PA7 (port 1 firebutton) or PA6 (port 0 firebutton) of
       the odd-addressed 8520 peripheral ports.  

Okay ... appendices A and B have a list of all the special register
addresses, such as JOY0DAT and JOY1DAT.  Neither of them list PA6 or
PA7.  So where is it?  Il est, if I want to read directly the logic
state of button 1, where do I find it?

                                           Mitch

[hiding out here under an assumed identity]

BITNET: {SXA00051, SXA00052} @ BAGAMCOK
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