Talk:Macintosh II

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[edit] No Music?

I was hoping to find what kind of music the Mac II could create, but it does not list a sound chip. Does it not include a sound chip? - Theaveng 11:49, 21 October 2007 (UTC)

The Mac II has an Apple ASIC sound chip with 256 bytes of 8-bit samples. I believe its max frequency was around 22.05 kHz.Potatoswatter 19:55, 21 October 2007 (UTC)

I know what 8-bit is, but what does "256 bytes" mean? It could only take 256 samples & then it ran out of memory? I'm confused. ----- In any case, it sounds very similar to how the Commodore Amiga's Paula chip operates (8 bit ADC and DAC + PCM generator). Does the Mac II come with a PCM or triangle or sawtooth or other generator? - Theaveng 20:32, 22 October 2007 (UTC)

There was also a square wave generator. Yes, after 256 samples it ran out of memory. Potatoswatter 21:56, 22 October 2007 (UTC) I'm not 100% sure, if you really need to know I can look it up. Potatoswatter 21:58, 22 October 2007 (UTC)

Here is info on the sample rates (Mac II supported rate22khz and rate11khz, and maybe another lower), and here is a vintage article mentioning the buffer size (1024 bytes = 512 samples = 1 sound interrupt per 23 ms). I've worked on the Sound Manager if you have more questions. Potatoswatter 20:45, 7 November 2007 (UTC) And the "Sony chip" it mentions is just an amp, which functions as a square wave generator because Apple connected an "extra" square wave to its enable input. Potatoswatter 20:47, 7 November 2007 (UTC)