PETE KLAMMER wrote: > Code-protection must also defeat another mechanism: incremental > bit-burning. .... The code-protect fuse should prevent this (does > it?). Not on the first 64 bytes of the original 16C5x parts, Pete. -Andy Andrew Warren - fastfwd@ix.netcom.com Fast Forward Engineering, Vista, California http://www.geocities.com/SiliconValley/2499