How can this be accomplished in Retro68?
"If you want to use the alternate screen buffer, you'll have to specify this to the Segment Loader"
Also, how can this be done in C?
"To switch to the alternate screen buffer, clear the following bit of VIA data register A (vBase+vBufA):
vPage2 .EQU 6 ;0 = alternate screen buffer
For example:
BCLR #vPage2,vBase+vBufA
To switch back to the main buffer, set the same bit."
FrenkelS
commented
4 months ago
The Macintosh Plus has two screen buffers, so it's possible to use page flipping / double buffering. See http://www.mac.linux-m68k.org/devel/plushw.php
How can this be accomplished in Retro68? "If you want to use the alternate screen buffer, you'll have to specify this to the Segment Loader"
Also, how can this be done in C? "To switch to the alternate screen buffer, clear the following bit of VIA data register A (vBase+vBufA): vPage2 .EQU 6 ;0 = alternate screen buffer
For example: BCLR #vPage2,vBase+vBufA
To switch back to the main buffer, set the same bit."