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Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!aluxe!mhuxi!charm!slag
From: slag@charm.UUCP (Peter Rosenthal)
Newsgroups: net.micro.cbm
Subject: Re: music application for the c64
Message-ID: <434@charm.UUCP>
Date: Wed, 15-Aug-84 10:19:55 EDT
Article-I.D.: charm.434
Posted: Wed Aug 15 10:19:55 1984
Date-Received: Thu, 16-Aug-84 02:44:26 EDT
References: <185@bonnie.UUCP>
Organization: Physics Research - AT&T Bell Labs MH
Lines: 16

byte the bug


	The two joystick ports of the commodore 64 are both bidirectional
parallel ports with bit selectable data direction.  You should
be able to program one of the ports as an output port and use
it to control a d to a converter.                 

	By the way, another way of detecting the drum signal would
be to put it on an interrupt line, the same way that the 
joystick trigger button interrupts the cpu.  This will
cut the requirement for continued polling of the drum line.  

This would allow you to increase the sampling frequency
on your d to a or a to d converters.