A few things: http://mirror.informatimago.com/next/developer.apple.com/documentation/mac/S... <http://mirror.informatimago.com/next/developer.apple.com/documentation/mac/Sound/Sound-2.html> https://en.wikipedia.org/wiki/Macintosh_128K/512K_technical_details#Sound <https://en.wikipedia.org/wiki/Macintosh_128K/512K_technical_details#Sound> Later Macs: http://midibox.org/forums/topic/11239-macintosh-apple-sound-chip/ <http://midibox.org/forums/topic/11239-macintosh-apple-sound-chip/> As for speed, read the Speed & Video Section: https://lowendmac.com/2014/inside-the-original-macintosh/ <https://lowendmac.com/2014/inside-the-original-macintosh/> for a possible explanation. -andy
On Jun 23, 2021, at 4:24 PM, John Heritage via vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> wrote:
Hey folks --
Two items I'm curious about on the classic (and very original) Apple Macs..
1. Mac (128kb ,512kb, etc) audio -- was there a custom or off the shelf sound chip for the audio on the original Mac? and was it 1 channel / and was it a custom chip by Apple? (how did it achieve speech synthesis in 1984)
2. The Macintosh Classic released in 1990 "was about 25% faster than the original Macs". This is in line with the Atari ST often being quoted as faster than a Mac when emulating a Mac via Magic Sac or similar. What changed in the architecture to make the Mac Classic (or an ST in emulation) faster than the original Mac? Was it faster memory that gave more availability for CPU usage? were only certain instructions sped up or was everything faster?
Thanks!