[comp.sys.atari.st] GEM and TOS

pa1132@sdcc15.UUCP (pa1132) (10/05/88)

Is there any way to limit the text output of TOS to a section of the
screen instead of the whole screen so that printing, scroLling, etc
just happens inside that section?  If this can be done, we can put a
TOS text window inside a GEM window and by calling TOS routines
instead of VDI scrolling of text can be much faster. Of course, this
may mean that we have to limit the boundary of windows to be on
the multiple of 8 pixels. 

apratt@atari.UUCP (Allan Pratt) (10/07/88)

If you carefully read SALAD, analyze the Line-A variables (especially
the ones at negative offsets from the line-A variable base pointer,
which were previously undocumented), and experiment some, you will find
that you CAN do this.  The code is parameterized enough that this kind
of thing is possible.  You will still have to take care of clipping and
redrawing...  Read carefully and experiment, and especially experiment
with accessories like the control panel active on the screen, to see if
you got redraws working correctly. 

============================================
Opinions expressed above do not necessarily	-- Allan Pratt, Atari Corp.
reflect those of Atari Corp. or anyone else.	  ...ames!atari!apratt