Hit "unwrap lines" above so this doesn't look jumbled.
OK, to clarify the difference between Basic Atom Pro 24M and 28M.
The pinouts are the same as far as power pins etc. So a socket can accept either 24 or 28
version without needing jumpers. Just more I/O pins are added at then end.
The 32K of EEPROM is 32K BITS, which is only 4096 BYTES. Still very handy. See the "Read"
and "Write" commands in the software manual (quote from Nathan).
The additional 4 pins added on the bottom are 4 more A/D inputs, so the device could
support 8 analog voltage inputs with no multiplexors. Whoo HA! One option is to decicate
some of the 4 analog inputs to fixed functions like cursor control or some kind of user
interface?
Like using a knob with 10 hardware detents to select 10 software options?
It might be possible to support some kind of performance interface using a force sensing
resitor? The processor is there to od the math to extract the X,Y and Z data.
That makes me want to put two sockets for quad DACs with a chip select to give 8 voltage
outputs.
This may come at the expense of some digital funtions. I may have to sacrifice a pin for
chip select. Are we FOR SURE dedicated to having a Speakjet socket on the main CVS PC
board? Or would we rather have 8 analog inputs and 8 analog outputs?
The Speakjet is cute, no doubt about it. A voice synthesizer is a bunch of fun, even if the
highest frequency out is 8 KHz. I wish that new MOOG in a chip was further along. I really
like the idea of having some kind of synth right on the PCB for the circuit bending. build it
into a manakins head crowd, They make me smile.
ALSO:
He is hand building prototypes of the 40 pin version of the Basic Atom Pro 40M now. This
is upgraded to a 20 Mhz clock (from 18) and uses the bigger 3687 part rather than current
3664. He says at least 6 months to a years till it is available but recommends using a 40
pin footprint for any new board. The Basic Micro (PIC based) 40m can be bought now.
Slower, but maybe with a enough I/O pins to read a MIni-Wave Prom for complex envelope
storage.
--- In ComputerVoltageSources@yahoogroups.com, "John Loffink" <jloffink@...> wrote:
>
> Hmmm, I missed that since it is only on the web page description. It would
> be nice if they published the spec for the 28M device, since they are
> selling it. That needs to be considered for the CVS designs, because you
> need to know which pins are allocated for memory access.
>
> John Loffink
> The Microtonal Synthesis Web Site
> http://www.microtonal-synthesis.com
> The Wavemakers Synthesizer Web Site
> http://www.wavemakers-synth.com
>
>