I guess the OS is still painting a mouse pointer on the old 'screen'.
I changed "logical screen" address, try to modify also "physical screen". Below you can find Setscreen description:
http://toshyp.atari.org/en/Screen_funct ... #Setscreen
Foxie wrote:Just running an hsync interrupt with rte takes 20% of the CPU time,
1st1 wrote:I think all of you should talk less about them but more with them.