Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!psuvax1!psuvm!art100
From: ART100@psuvm.psu.edu (Andy Tefft)
Newsgroups: comp.sys.apple2
Subject: Re: 8bit screen blanker
Message-ID: <90305.103905ART100@psuvm.psu.edu>
Date: 1 Nov 90 15:39:05 GMT
References: <90303.233006ART100@psuvm.psu.edu>
 <cb=r4u600Vp5IilFQP@andrew.cmu.edu>
Organization: Penn State University
Lines: 12

In article <cb=r4u600Vp5IilFQP@andrew.cmu.edu>, jh4o+@andrew.cmu.edu (Jeffrey T.
Hutzelman) says:
>
>        First, don't confuse BASIC.SYSTEM (which provides such routines as
>GETBUF and FREEBUFS, and is only around when you're in AppleSoft) with
>the ProDOS 8 MLI (the operating system iteslf), which is always around.

The basic idea here was that the thing could only run under basic.system
since nobody can think of a good way to notice how long a random
program has been sitting there looking at $c000 waiting for a keypress.
If I run under basic.system, I can intercept the keyboard vectors
and rewrite keyin.