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| Legacynth: Sound Driver emulation for PPC Macs | |
| Posted by: jjuran on 2026-01-11 15:31:23 I've made a reimplementation of the Sound Driver API via the Sound Manager, called Legacynth. A number of old games that use the Sound Driver are still able to run in Mac OS 9, but with no sound — there's a .Sound driver on PPC and AV Macs, but it doesn't produce audio. Legacynth intercepts the I/O calls to the driver and translates them into Sound Manager calls. It supports all three synthesizer modes (free-form, square-wave, and four-tone) and comes with a test program for each one so you can easily verify that it works.You can download it here: https://www.macrelics.com/legacynth/ There's also AGPL-licensed source code in https://github.com/jjuran/metamage_1 under apps/mac/Legacynth/.I'm interested in any and all feedback. Beyond making it work, I put some real effort into making it usable, and I hope it shows. | |
| Posted by: Byrd on 2026-01-11 23:21:19 Hey jjuran, Saw this on Vogons, nice work! Am keen to try some working but botched sound games on a beige G3 soon. Are there any other games that would go on the list? JB | |
| Posted by: adespoton on 2026-01-12 12:28:57 Check out https://docs.google.com/spreadsheets/d/1wg45xflCn8MAPvE0H4un7OmbavRNW5qlSHbeZg39Q9A/ -- I've outlined games that have audio issues when running in OS 9; those would be good likely targets to test (and please update the spreadsheet if you find that Legacynth fixes the issues!) | |
Posted by: jjuran on 2026-01-15 23:53:03Saw this on Vogons, nice work! Am keen to try some working but botched sound games on a beige G3 soon. Are there any other games that would go on the list? Thanks! I've added a Legacynth Compatibility Guide here: metamage_1/apps/mac/Legacynth/COMPATIBILITY.md at master · jjuran/metamage_1Metamage open source, general repository, iteration 1 - jjuran/metamage_1
github.com
I've added Shufflepuck Café (which feels somewhat clunky to me, but it does work) and StuntCopter 1.5 (and up), which adds the necessary speed control. I also had to remove GunShy, which worked for me in Mac OS 8.1 in SheepShaver, but crashed in 9.2.1 on a G3. | |
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