Re: AppleWin and graphics

[aiiadict@gmail.com]

On May 5, 3:28 pm, "Guillaume Tello" <houten....@wanadoo.fr> wrote:
>     Well, with HGR, everything is Ok
>     With HGR2: the screen shows a fixed random image, the program runs but
> never displays what I expect. I can stop it with Ctrl+C, and TEXT returns
> back to the normal state.

try:

HGR2

poke 16384,0
look at upper left of screen...
poke 16384,128
you should see upper left of screen go from blank to
a solid line

HGR2 sets up some pointers that tell HPLOT commands, etc, to draw to
$4000 the HGR2 RAM area...

from your description, I would guess that these pointers aren't
getting setup correctly, or perhaps Prodos is using $4000 for a
buffer..

Rich