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Path: utzoo!decvax!mcnc!akgua!sdcsvax!sdcc3!ee173xed
From: ee173xed@sdcc3.UUCP ({|stu)
Newsgroups: net.micro.cbm
Subject: more on joysticks (keyboard interrupt correction)
Message-ID: <2451@sdcc3.UUCP>
Date: Tue, 6-Nov-84 20:13:25 EST
Article-I.D.: sdcc3.2451
Posted: Tue Nov  6 20:13:25 1984
Date-Received: Thu, 8-Nov-84 09:34:26 EST
Distribution: na
Organization: U.C. San Diego, Academic Computer Center
Lines: 16

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A correction to my previous note:
Poke649,0 will disable the keyboard, but not by disabling the
keyboard interrupts.  The C-64 Reference Guide says that (p. 106)
poke56334,peek(56334)and254 will do that.  (It doesn't always work.)
Poke649,0 shrinks the keyboard queue to 0.

Port 1 joystick left prints spaces to the keyboard buffer and thence
to the screen.  Since space is a repeating character, it continues
to output spaces thereby wasting CPU cycles.


Question:  Does anyone know a reliable way to alter the kernal
routine that polls the keyboard so that joystick port 1 can be used
from BASIC?