Re: BBC micro

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#893

From: cd... Charles Daffinger
Date: Mon, 15 Jan 1990 04:47

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In article <KIRAVUO.90...@kampi.hut.fi> kir...@kampi.hut.fi (Timo Kiravuo) writes:
o On Apple ][ the disk I/O in Basic was done via printing
o utilities, chr$(13)chr$(4) was the code to start a DOS command. I
o am skipping a lot of details, but one of the commands was new,
....

There was something else which was undocumented on these machines (and
which I used about 11 years ago)...  If you inserted a magic series of,
I believe, 5 bytes (I don't remember what they were anymore) between
the line number and the tokens for the BASIC program itself, you would
selectively make the line of code invisible.  A LIST would give a list
of the line numbers, but not the code, though the program itself would
work without a hitch.


-charles
-- 
Charles Daffinger  >Take me to the river, Drop me in the water<  (812) 339-7354
cd...@iuvax.cs.indiana.edu             			 cd...@ed.ecn.purdue.edu
Home of the Whitewater mailing list:    whitewate...@iuvax.cs.indiana.edu

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Path: mbox-mo1.pugleaf.net!gmdzi!unido!mcsun!uunet!mailrus!iuvax!cdaf
From: cd...@iuvax.cs.indiana.edu (Charles Daffinger)
Newsgroups: alt.folklore.computers
Subject: Re: BBC micro
Message-ID: <33046@iuvax.cs.indiana.edu>
Date: 15 Jan 90 04:47:59 GMT
References: <wZfVc0200WB68G8m1a@andrew.cmu.edu> <KIRAVUO.90Jan14154604@kampi.hut.fi>
Reply-To: cd...@iuvax.cs.indiana.edu (Charles Daffinger)
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Posted: Mon Jan 15 05:47:59 1990
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