On Wed 29 Mar 2023 at 21:02:26 +0200, Torsten Kracke wrote: > Apart from what Olaf was writing there is also the demo "A Bright Shining > Star" for CRTC-less PETs which for it's PECBM-mode uses the same technique > as in the HI-RES program to provide pseudo hi-res graphics of 10 chars width > by updating the video-RAM on the fly: > > https://www.pouet.net/prod.php?which=91735 Because of this demo I added a compile-time option to VICE (r43618) that allows you to delay the vertical blank interrupt a bit. For this demo, 16 seems to work well: when running the "real iron, non emulator" version, the starshine at the end looks ok, or at least it doesn't have the extra horizontal lines to its left that it had before. The option is by default off because it adds overhead that is totally unneeded in 99,9999% of the cases. > Torsten -Olaf. -- ___ "Buying carbon credits is a bit like a serial killer paying someone else to \X/ have kids to make his activity cost neutral." -The BOFH falu.nl_at_rhialto
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