Closed frankmilliron closed 2 months ago
Supposedly a ROM 1 with a vidHD can properly display page 2 (source: vidHD manual https://www.callapple.org/docs/vidhd/VidHD_Manual_1.2.pdf ). Not sure it's practical to add that extra layer of checking but I thought it might be worth mentioning.
The manual seems to imply that it will also work on a ROM0. Do you have a ROM0 or 1 you could test a build with?
You can try a build which tests for the VidHD here: 4cade.hdv.zip
If it seems to work I can commit the changes.
Better fix; just don't play the Pollywog demo on a ROM0 or ROM1 that can't properly display page 2. We can't turn on Alternate Display Mode due to its use of VBL interrupts on these machines. We can detect and turn it on with ROM3, however, where it does not use interrupts.