MIDI to CV - Cygnal?

[Jeroen Proveniers]

> -----Original Message-----
> From: Paul Maddox [mailto:paul.maddox at ndirect.co.uk]
> Sent: Wednesday, August 09, 2000 11:02 AM
> To: Barry L Klein
> Cc: Synth-DIY
> Subject: Re: MIDI to CV - Cygnal?
> 
> 
> Barry,
> If you want to get started quickly and cheaply, get yourself 
> an ATMEL STK200
>  you get software (assembler, complier, In System Programmer) 
> and a board
> with lights and switchs. The chip itself (90s8515) runs at 
> 1Instruction per
> cycle.

For 80% of the instructions.

> My monowave uses a 90s8515 for the main processor and two 90s1200's to
> generate the oscillators..
 
> In short, its a very powerfull little processor. and the 
> assembly language
> is really
> easy to pick up.

It's indeed a very nice processor. It used an AT89C2051 for a
masterkeyboard, but that's a bloody 8051 which I absolutely don't like.
12MHz that divided by 12 immediately... damn.
The AVRs are much nicer, and the 20 pin devices are very cheap. I really
like the Flashmemory of Atmel,saves a lot of time. I remember the tedious
erasing and reprogramming of SGS ST6 MCUs...
I think I'm going to use the AVR as a standard uC in all my future projects
(synth, car electronics), despite the fact there is no (easy usable) C
compiler for it.

Anway, how do the oscillators of your monowave work? Just square and saw? I
had the same idea's, but it's just another project in the long long list of
projects I still have to finish.
 
JJ
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20000809/08c3a4f2/attachment.htm>