[vcf-midatlantic] Original Macintosh Architecture Questions

Bill Degnan billdegnan at gmail.com
Wed Jun 23 20:35:25 UTC 2021

If they used a 60040 rather than a 60000 chip that would be a lot faster

On Wed, Jun 23, 2021 at 4:25 PM John Heritage via vcf-midatlantic <
vcf-midatlantic at 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!

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