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Known Issues: CPC

Open floooh opened this issue 4 years ago • 0 comments

  • the floppy disc emulation doesn't take timing of 'phyisical components' into account (e.g. all seek times are 'immediate'), this causes some demos to temporarily speed up during disc loading

  • in the Demoizart initial part, there's some overlay scrolling text missing during the rotating cube sequence

  • some demos still have 'vertical' timing issues:

Demoizart 'Critical Part':

Screenshot 2021-11-28 at 15 16 19 Screenshot 2021-11-28 at 15 17 51 Screenshot 2021-11-28 at 15 18 24
  • horizontal timing issue in Gloire a Piou! (this is extremely sensitive to moving IO writes one cycle forward or backwards, or the actual clock cycle where the wait pin is set versus the video system ticked):
Screenshot 2021-11-28 at 15 20 22
  • some demos show pixel junk at the lower or upper border (should those areas simply be blank?):

PhX: in the rotating 3D cube section, lower border:

Screenshot 2021-11-28 at 15 24 23

And in the next text scroller section upper border:

Screenshot 2021-11-28 at 15 24 36
  • in Batman Forever, subtle flickering pixel junk in text scroller parts

  • From Scratch: this bar on the left in the first plasma screen (can also be tweaked by moving IO reads one tick backward):

Screenshot 2021-11-28 at 15 31 36

...and later From Scratch hangs completely.

  • One Screen Colonies: graphics completely broken:
Screenshot 2021-11-28 at 15 34 39
  • Scroll Factory: palette is broken on left side of intro screen (should be blue): Screenshot 2021-11-28 at 15 38 09

  • Points Barres: some minor artefacts of the bottom of vertical scrolling text: Screenshot 2021-11-28 at 15 46 59

floooh avatar Nov 28 '21 14:11 floooh