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Article #10 (51 is last):
Newsgroups: freenet.sci.comp.atari.product.8bit.tricks
From: bb099@cleveland.Freenet.Edu (Adam Trent Phillips)
Subject: The extra keys on the 1200xl....
Posted-By: xx004 (aa700 - Michael Current)
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 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

        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"
"Vox Populi...Vox Hummbug !"-William T. Sherman

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