Walsh Functions

[KA4HJH]

>Using a micro to do all the maths sounds like fun.  Especially the 6800.  Why
>not try the more modern, and more powerful, 6809?  Doing the maths might be
>slightly easier as it can do simple 16-bit maths directly, and has two 16-bit
>index registers, gobs loads more indexing modes, etc etc.  If you're going
>to be
>triggering off a VCO and if you're going to be using a reasonable number of
>Walsh terms, eg. 31 (so the VCO is running 5 octaves up), you'll need to
>do the
>maths pretty quickly.  Still, should be interesting!!!!!

The 6809 is still around but pretty much obsolete (great in its time but
try and find a development system now). Jump up to the 68HC11. 16 bit
registers, multiply and divide commands (may be missing a couple of the
fancy addressing modes but I can manage). Processor cards/development
systems are cheap and readilly available. See the adds in Circuit Cellar
Ink. A very popular processor and an easy transition from the 6502/6800.

BTW, I heard there's a company that makes 300MHz 6502's...or something like
that. EEYOW...

Terry Bowman, KA4HJH
"The Mac Doctor"