> Now that Parallax is not producing Reflection any more, they could release
> Hard&Software into public domain? Parallax, we know that you are listening,
> are you willing to give us more details? please! If you refuse to tell us
> the hardware and PIC firmware, you could at least tell us the protocol used
> for communication between the PC running your easy-to-use PSIM simulator and
> Reflection, so PSIM could be used with only the hardware to be built.
>
> If only 18pin and 28pin PICs have to be simulated, a 16C74 seems to be the
> adequate interface controller. A PIC probably is the best IC to simulate
> another PIC. If the user can accept to have two pins unused (necessary for
> communication to PC) even the big 40pin-PICs could be supported.

I'd been thinking of doing this, but using either printer port with either
a simple cable (in case the PIC application needs <=5 open-collector I/O
pins and the rest of the pins can be input-only or output-only) or else
some simple hardware (e.g. 3 74HC125's and 4 74HC574's).  My plan was to
emulate the 16C5X by doing a PIC to 80x86 translation; since the PIC code
is read-only, there would be no need for real-time translation.  If I were
to do this, I would expect to get real-time or near-real-time for non/IO
bound 4MHz applications on a DX266.