Melabs U2 Programmer

[JTCullins]

My U2 programmer will not work with a PIC16F873 chip. I have it selected in the drop down window. It works fine with a PIC16F818. I did change the cable to the 28 to 40 pin chips.
any ideas ??
Thank
Jim

[Darrel Taylor]

It will work with the 873.

Along with changing the ribbon position...
Did you change the position of pin1 on the chip? (Next to the zif handle)

[JTCullins]

Yes I made sure pin one is in the correct position.
I have programmed them before, not sure what has happened.
I changed it back and programmed a PIC16F818 just fine.

[Demon]

Did you reinstall the programmer software lately?

I remember seeing something about limitations on the freeware version.

[JTCullins]

Robert, Yes that was the problem. I dropped back one version on firmware and it is working again.
Thank man