[sdiy] ADuC702x (Re: programmable synth module)

[genie at netsynth.org]

Hi, 

How about using a modern 40 MIPS ARM7 chip from Analog Devices - ADuC7026. 
It's a true system on chip with inner OSC, 12-Ch 12-Bit ADC + Quad 12-Bit 
R/2R DAC and external bus for extra memory or peripherals. Price is 
@US$16.66/Digi-Key (or, you might get some samples from AD). 

http://www.analog.com/en/prod/0,,762_0_ADUC7026,00.html 

And, Dr. Ting told that his STC eForth V2 for ADuC7020 runs on ADuC7026. 

http://offete.com/FORTHstamp.html 

It should be a nice combination for 'programmable synth node' though 
ADuC702x chip runs slower than Philips LPC2100 series if farmware stored in 
some wait-state flash rom. 

Cheers, 

genie
http://netsynth.org/ 

Tom Arnold writes: 

 -snip-
> Personally what I'd like is a nice fast Forth based solution.  To this end
> I've played with a couple Atmel based Forth solutions, but they have been
> short of my rough goal of 2MIPS.   I reached the 2MIPS goal by figuring out
> roughly how many Forth instructions I'd need to process per second to handle
> 2 44.1khz sampled inputs and 2 44.1khz outputs along with a few instructions
> to mutilate the data.  This was arbitrarily chosen with the idea that it
> would roughly translate also to 8x10khz -> 8x10khz. 
> 
> It'll be hard to hit these speeds with an interpreted language and a
> cheap/small CPU.  Note I say Difficult, not impossible.  
> 
> Oh, and if someone does cook up a solution, make sure its compatible with
> licenses other then GPL, or at least make sure you really understand the GPL
> before trying to use it...
 -snip-