+batari Posted December 23, 2020 Author Share Posted December 23, 2020 9 hours ago, Swami said: I'm not sure where the cutoff is for 2600 complexity or if we will get Encore level compatibility, but with 0.95 Space Rocks and Draconian did not load, along with other complex 2600 games. For 7800, Milli and Molly loads and has some sort of sound effects but is all scrambled, Pac Man Collection 40th Anniv has no sound, but BBCQ still plays with POKEY sound. As said, the ARM-based 2600 games aren't implemented in Concerto mode yet (they do work in Encore mode.) Millie and Molly needs a slight modification to work (modified demo version posted here.) This is temporary and will be fixed in firmware so the unmodified version will work eventually. There is also a modification to bypass the POKEY detection, but it isn't perfect as it also bypasses POKEY reset so it sometimes takes a moment to begin playing the music. Pac Man collection I think uses the Yamaha YM2151 sound chip, which is not yet implemented, though HOKEY hardware may be able to handle that. A YM replacement should be created anyway for homebrews, as although YM2151 chips aren't hard to find, unlike POKEY (which outputs analog sound), YM chips do not. While POKEY chips only need two resistors on a PCB, YM chips need a ton of support hardware to produce usable analog sound. In my opinion that makes the actual chips themselves unsuitable for homebrew game PCBs. That said, HOKEY isn't intended to be a drop-in replacement for the YM chip, as there is no shortage of the actual chips. Instead it would be designed to support not just the chip functions but also the support hardware needed to make the YM chip actually produce usable sound, so it could be viable for homebrew games as well. However, Bupchip's sound is far superior to the YM chip or any flavor of POKEY, so I'd think people should be more excited about Bupchip. HOKEY hardware should be able to support some version of Bupboop and allow for sound quality that these old devices can't even dream of matching. Millie And Molly (Demo) (20200528) Concerto mod.a78 4 1 Quote Link to comment Share on other sites More sharing options...
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