Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!cornell!batcomputer!riley
From: riley@batcomputer.tn.cornell.edu (Daniel S. Riley)
Newsgroups: comp.sys.amiga.tech
Subject: Re: CIA Timer Example
Message-ID: <7081@batcomputer.tn.cornell.edu>
Date: 29 Dec 88 15:01:24 GMT
References: <1439@percival.UUCP> <5587@cbmvax.UUCP> <38@sdcc10.ucsd.EDU>
Reply-To: riley@tcgould.tn.cornell.edu (Daniel S. Riley)
Distribution: na
Organization: Cornell Theory Center, Cornell University, Ithaca NY
Lines: 17


In article <38@sdcc10.ucsd.EDU> cs161agc@sdcc10.ucsd.edu.UUCP (John Schultz) writes:
[...code and other stuff deleted...]
>  Timer B on ciaa *should* be available.  I can't use timer A
>because we need the serial port at the same time.

Is this really true?  I know the hardware reference says "Commodore
Serial Communications", but SP and CNT for that CIA are connected to
paper out and busy on the parallel interface.  Those lines can be used
for serial communciation, but they have nothing to do with the serial
port, as far as I can tell.  Have you actually tried using timer A and
failed, or are you just trusting the somewhat misleading remarks in the
hardware reference?  Am I reading the Hardware reference right?  Is
time A actually used for anything?

-Dan Riley (dsr@lns61.tn.cornell.edu, cornell!batcomputer!riley)
-Wilson Lab, Cornell U.