Good fun. I happened to acquire a TI-74 programmable calculator, circa 1985... A robust implementation of BASIC, but otherwise a closed system. So I learned to hack... :) --=20 Eppur, si muove... --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .