Re: Smart/Dumb box again...

>
> Jon Elson wrote:
>
> > The boards connect to the parallel port, and use IEEE-1284 hardware signalling
> > to communicate between the CPU and the boards. This allows up to 256 different
> > registers to be addressed. I set it up to have each board accomodate a block
> > of 16 addresses, which works out real well.
>
> Here's a picture showing a 4 channel quadrature decoder board and a 4
> channel DAC board plugged into a backplane/cardcage assembly:
>
> http://users.erols.com/mshaver/ppmc/ppmc.jpg
>
> Matt