> Have anyone designed a one pin interface?
>
> It would be nice to have a simple monitor suopport program in every PIC, so
> if we want to check inside it when it is working (or working wrong) we can
> attach a specialised unit with a display and keyboard to it. We must use
> minimum number of pins for it (one), and it should be possible to implement
> "everywhere".
>
> The monitor unit I believe can be built using a F84, LCD and a few keys to
> select adress and view and change registers, force gotos or calls to
> stop,test,run routines etc in the target system.
>
> The target system's routine shoud of course be as possible as possible, and
> perform som kind of erroer check so it don't treat noise as instructions.
>
> The monitor scans the keys, decode it to simple instructions and send them
> to the target. The target sends back register contents binary, which the
> monitor decodes and displays.
>
> /Morgan O
>
>
>
>
> Morgan Olsson, MORGANS REGLERTEKNIK, Sweden, ph: +46 (0)414 70741; fax 70331
> -
Ever heard of an ICE?