This has been an interesting thread, but I'm suprised someone hasn't mentioned the various BASIC compilers. I often use PIC Basic PRO with a bootloader on 16f87x and 16f88 parts. From a development standpoint it's very stamp-like, but of course it uses blank PICs so long term costs are low. Initial cost of PBP is ~$200, so equivilant to about four stamps. -Denny -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist