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PICList Thread
'16F84, run problems'
1998\04\15@024303 by Lennart.Berlin

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Hello, I wonder if any of you know why a program that works in simulator

(MPLAB) but it won't work then downloaded to the PIC16F84?
Any ideas...

Another question: Does anyone know a way to decrease the value in Data
EEprom, in a short routine?

//Robert
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1998\04\15@031130 by Ints Mikelsons

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Lot of ideas... MPLAB isn't the best way to create whole programm. I,
personally, use it only when I need to debug very compicated subprogramms
like floating point math, etc. Anyway try to cu off the parts of your
programm and find the problem by yourself.

.....Lennart.BerlinKILLspamspam@spam@EMW.ERICSSON.SE wrote:

{Quote hidden}

1998\04\15@120008 by Mike Keitz

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On Tue, 14 Apr 1998 22:53:05 PDT Robert Berlin
<.....robert_berlinKILLspamspam.....HOTMAIL.COM> writes:
>Hello, I wonder if any of you know why a program that works in
>simulator
>(MPLAB) but it won't work on the PIC16F84?
>Any ideas...

Is the oscillator on the PIC16F84 working?  Is the MCLR pin pulled-up to
Vdd?  With some power supplies, a PIC doesn't always start properly.  You
can test all of this by programming a chip with a very simple program
like the LED blinker and see if it works.

>
>Another question: Does anyone know a way to decrease the value in Data
>EEprom, in a short routine?

Just read the value, using the read routine in the book, decrement
EEDATA, and use the write routine to write the new value back.  Be sure
that the WR bit is clear (indicating the 10 ms write has completed and
the EEPROM is not busy) before changing EEADR or EEDATA again.

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