On Thu, 10 Oct 1996, Barry Bine wrote:
>         All I have to do is insert a blank 16C74 and perform the "BLANK
> CHECK ALL" operation.  Sometimes the software reports that the device is
> blank, other times it reports that it is not.  In the latter case, the
> yellow "ACTIVE" LED on the programmer does not light.  The whole thing is
> very flakey.  I have tried different COMM drivers (including the original
> one that came with Win 3.1) with little success.  Programming and verify
> operations are also sporadic.  On the surface, it looks like a communcations
> problem, but I think it is something else.

I have the similar problems with a 16C73 and Picstart Plus and MPLAB.
It seems there is no problem with the 16C84 for me. I figured out,
that I can rely on the first think, Picstart does after a complete
reset of computer and programmer. This is not a solution but a
work-around, until these bugs are fixed.

BTW: I am working on a system that is quite different to yours, I
believe, the problem is just a bug in the Picstart firmware or MPLAB.

I hope, somebody posts a message here, when the bugs are fixed!

--
Stefan Bormann  s.bormann@tu-bs.de

FREMO: http://ourworld.compuserve.com/homepages/shipmill/inhalt.htm