On Mon, 21 Dec 1998, John Payson wrote: > What about having a programmer automatically determine the best > value to use whenever an EPROM device is programmed. It would > only cost 7 words of code space from $1F8 to $1FE or $3F8 to > $3FE to burn the test program, and it would then eliminate the > need to worry about the calibration constant. I've posted this > idea before but not had time to implement it. Has anyone else > tried it? I haven't and I'm interested. Could you explain a little bit ? Does the programmer have to be able to turn on the chip in normal operation mode and read out a pin ? Peter