>> Ok then, how about an LVP programmer that uses only non-programmed >> components and takes a stream from a serial port like Tony's ASCII >> programmer. Perhaps the clock signal could be developed without RC >> circuits. > > Why is that better than a high voltage programmer which can > always program the chip regardless of how the LVP bit is set? The hardware can be simpler. >> Again, the point is to not require any programming software, > > But why? Probably to support the widest range of PC platforms. > There clearly needs to be *some* software between > the disk and the serial port (or whatever port) Yes, but that software does not need to be on the users PC: the author could translate the .hex file to something that can be streamed directly out of the serial or parallel port. Note that I don't fully agree with James' ideal, but I can see his points. Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist