Sorry if this is a dumb newbie question, but I just can't find the answer or
figure it out.

I've built David Tait's TOPIC2 programmer to use with a 16F627-20 and I'm
trying to figure out the pin assignments between the LPT port and the PIC.
I think I have the following right, but I could be wrong:

Function    LPT pin    PIC pin

--------    -------    -------

OUT              14    RB7 (13)

CLK               1    RB6 (12)

MCLR             16    /MCLR (4)

PGM              17    RB4/PGM (10)



And I have no idea about the READ and IN pins.  I've tried everything I can
think of involving LPT pins 11 and 2, and it's probably blindingly obvious
to the initiated, but my lack of understanding is definitely hindering me
here.

If I leave READ and IN undefined in FPP then it succeeds in programming, but
I haven't been able to get anything running.  If I can get the read working
then that would be the logical next step so that I can at least know that
it's being programmed correctly.

I'm really trying to come up to speed on this, but I'm just not finding the
kind of intro material that I need to get past this stage.  I have read the
programming spec from Microchip and all the FAQ pages and links I can find,
and I'm just not getting any closer.  I realize now that if I had gone with
another programmer design it would have more support, but I don't want to
have to throw away the TOPIC2 and start all over again (and it fits so
nicely in a DB25 shell :-).  So thank you in advance for any help.

Peter Jeffe

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