> Hello,
>
> I am a newbie to PIC so excuse me for my ignorance. I am trying few
> things with PIC16F877a and using JDM programmer along IC-prog. I was
> able to successfully program PIC16F877a several times till few hours
> ago. I was trying an LED flashing program on port-A (got from web,
> written for 16F84a) , with my PIC device and having trouble since LEDs
> connected to RA0 was flickering senselessly. On my board I had PIC's
> VDD, VSS connected to supply and XTAL acroos OSC lines. Since this was
> my very first rig-up of PIC, suspecting to have missed out some
> connection, coupled with a vague memory of reading in web about 877a
> requiring logic on RB3/PGM line I pulled it high (not sure what state
> MCLR was at this point). From this point onwards I am no longer able
> to program the device. I get verification error.
>
> Did I spoil the device by doing so? I am confident of JDM setup, since
> I am able to program a 16F84.
>
> Any help in this regard is highly appreaciated.
>
> PS: Just learnt that RA0 is default analog pin. Guess this was the
> reason for my LEDflash program failure.
>
> Thanks & Regards
> Ravi
>
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