Hello all, I've built David Taits programmer for use with an 16C84. However, I'd also like to use the 16C71 at some stage due to the ad convertor. Seeing as the 16C71 is also serially programmable, could I use Davids programmer for this as well? Assuming of course that the device has been erased properly. Thanks for any info. Rafe ---------------------------------------------------------------- Rafe Aldridge - rca@sirius.tn.rl.ac.uk R65, Rutherford Appleton Lab, wwWWww Chilton, Oxon, OX11 OQX, UK. o o ------------------------------------------------ooO--(__)--Ooo--