The extra keys on the 1200xl....
From: Adam Trent Phillips (bb099@cleveland.Freenet.Edu)
Date: 05/17/92-04:55:27 PM Z
From: bb099@cleveland.Freenet.Edu (Adam Trent Phillips)
Subject: The extra keys on the 1200xl....
Date: Sun May 17 16:55:27 1992
I recently bought a 1200xl computer. I know that many of
you must be saying to yourself "What a Rube !". But please bear
with me.....
One thing, it has a better keyboard than my 800xl (my old
800 needs a new keyboard and perhaps another RAMboard....) and a
good number of my programs run on it: Atariwriter (card+disk),
Atariwriter+, Ansiterm, 800express for the sx212, Bobterm and
many, many more....
But one thing that baffled me when I first saw what a
1200xl looked like, I wondered aloud "What are the keys 'F1-F4'
for ?
Well, here is a list of what they do....
F1=cursor up
F2=cursor down
F3=cursor left
F4=cursor right
F1+Control=Keyboard disable
F2+Control=DMA/ screen disable *
F3+Control=Turns "keyclick" on/off +
F4+Control=Character set toggel (Graphix/International)
*=this tells the computer to stop drawing screen and
and dedicate time to actual calculation...like using
location 559 ($22F)- seepage 44 of "Mapping the Atari"
+=this feature works with many programs and BASIC. It
is equal to using location 731 ($ ? )on an XL or XE
cpmputer.....
Note too, the 1200xl works grat with "basic XE".
P.S. here is the truth table for the two L.E.D.s
labeled "L1 and L2"
L1: on=keyboard disabled off=keyboard enabled
L2: on=international char. set off=graphix char.set
Happy Hacking.....
--WHITE ROOK
--
A. Trent Phillips...also known as "White Rook"
personal E-mail:bb099@cleveland.freenet.edu
NWROC E-mail:aphillip@heartland.bradley.edu
"Vox Populi...Vox Hummbug !"-William T. Sherman
-----------------------------------------
Return to message index
