Tursi Posted February 15, 2021 Share Posted February 15, 2021 I took the time to investigate this today with TI99IUC's config file -- the difference actually was due to his running in 50hz mode instead of 60hz mode. I don't know if this is a Classic99 glitch or the software actually does that when running at 50hz, but that's what the cause was. You can toggle back and forth in the Video menu and see the problem happen and clear up... I suspect it's just because the missile and UFO are not running as far as the software expects in the time allotted when at 50hz... if you shoot a little late you'll still get the explosion, but it's further down the screen, etc. 1 1 Quote Link to comment Share on other sites More sharing options...
ti99iuc Posted February 17, 2021 Share Posted February 17, 2021 @Tursi many thanks for the detail I really completely forgot about the 50hz setting. @senior_falcon I published an article for the italian 99ers so to show also your updated results on this Sprites in TI-BASIC possibility. I also added videos of your demos and the ones from @notwhoyouthink, including files to download. https://www.ti99iuc.it/web/index.php?pageid=homepage&artid=208 Also a Morphy page added with the 'Fastinit' loader update https://www.ti99iuc.it/web/index.php?pageid=database_cerca&archivioid=343 Many thanks guys Ciro 6 Quote Link to comment Share on other sites More sharing options...
+mizapf Posted February 18, 2021 Share Posted February 18, 2021 On 2/16/2021 at 12:14 AM, Tursi said: I suspect it's just because the missile and UFO are not running as far as the software expects in the time allotted when at 50hz... if you shoot a little late you'll still get the explosion, but it's further down the screen, etc. This is also exactly what you see in MAME, so it is definitely a matter of 50/60 Hz. I recently tried it and wanted to post a screenshot, but this proved to be a bit difficult. 1 Quote Link to comment Share on other sites More sharing options...
tmop69 Posted February 18, 2021 Share Posted February 18, 2021 14 hours ago, ti99iuc said: @Tursi many thanks for the detail I really completely forgot about the 50hz setting. @senior_falcon I published an article for the italian 99ers so to show also your updated results on this Sprites in TI-BASIC possibility. I also added videos of your demos and the ones from @notwhoyouthink, including files to download. https://www.ti99iuc.it/web/index.php?pageid=homepage&artid=208 Also a Morphy page added with the 'Fastinit' loader update https://www.ti99iuc.it/web/index.php?pageid=database_cerca&archivioid=343 Many thanks guys Ciro It could be interesting to have a compiled version of Morphy (its ancestor, "Grog Maze", was really better with additional speed), however, at a first check of the code, it uses various float variables. Some should be easily replaceable, however on lines 3960-3990 are used for managing the sprites, so must be handled correctly to not impact the game. Moreover I'm not sure that the CALL PEEKV(-753,X) to enable the sprites trick on MM is compatible with the compiled code. So, a check from the various TI99 gurus ( @senior_falcon , @Tursi , etc.) is really needed... ? 1 Quote Link to comment Share on other sites More sharing options...
LASooner Posted October 1, 2021 Share Posted October 1, 2021 I really wish I knew about this as a kid with only an unexpanded TI and a Cassette recorder. 7 Quote Link to comment Share on other sites More sharing options...
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