On Aug 13, 6:45 pm, Antoine Vignau<antoine.vig...@laposte.net> wrote:
There is: Alternate Display Mode. It shadows text page 2 and displays
it.
av
Yes, but there is a minor problem with using Alternate Display Mode:
the control panel sets up an interrupt generator for the IIGS to
interrupt every vertical blanking interval to copy High-Res Page 2
from bank $00 to bank $E0, making the games "stutter". The reason for
this is because the Mega II does not shadow Page 2 text or high-
resolution Apple IIe graphics.
I have a few games that appear to "fail" on the Apple IIGS because the
games use text Page 2 for some reason--often, this is just for showing
some text so as to configure things like how many players and whether
to use joystick or keyboard, but they revert back to Page 1 high-
resolution graphics in order to play the game. I find myself enabling
Alternate Display Mode just for that period of time to read the text
display, but disabling it just to be able to play the game without
having sound generation and timing issues!
--tonza