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Path: utzoo!mnetor!seismo!lll-crg!lll-lcc!csustan!rayz
From: rayz@csustan.UUCP (R. L. Zarling)
Newsgroups: comp.sys.cbm
Subject: Re: C-Power bug ???
Message-ID: <320@csustan.UUCP>
Date: Mon, 8-Dec-86 14:57:27 EST
Article-I.D.: csustan.320
Posted: Mon Dec  8 14:57:27 1986
Date-Received: Mon, 8-Dec-86 21:27:45 EST
References: <1688@i.cc.purdue.edu>
Reply-To: rayz@csustan.UUCP (R. L. Zarling)
Distribution: net
Organization: CSU, Stanislaus; Turlock, California
Lines: 17
Keywords: C-Power, bug

In article <1688@i.cc.purdue.edu> aig@i.cc.purdue.edu (Doug Crabill) writes:
>
>	I am writing a game in C-Power (please hold all applause until the end
>of the article) and have run into a bit of a problem.
> ...
>	joy1 = 56320; 	/* set joyport location */
> ...
>		j = 15 - (*joy & 15);

Just guessing, but I noticed you have not set any bank number (i.e. memory
configuration).  Your references *pointer could be hitting either bank0 ram,
bank1 ram, i/o devices, etc.  My guess is that C-Power, by default, hits some
kind of RAM; thus, your reference to *joy is not reading an i/o device at all.
Using the supplied peek() and poke() gives you the option of specifying a
bank number to control this.  By the way, there was some discussion that
either peek() or poke(), as supplied, may be buggy.  In any case, there is
a revised version on the C-Power bbs.