TONY NIXON 54964 wrote: > Try comparing the basic instruction lists at the start of the > assembly instructions from the data book for the 16C5X and the 16CXX > parts and you will find very little difference. The 'CXX parts have > 2 extra instuctions. - RETFIE and RETURN. Actually, Tony, that's not completely true... The 16Cxx parts have FOUR new instructions -- RETURN, RETFIE, ADDLW, and SUBLW -- and they lose (more or less) two: TRIS and OPTION. -Andy === Andrew Warren - fastfwd@ix.netcom.com === === Fast Forward Engineering - Vista, California === === === === Custodian of the PICLIST Fund -- For more info, see: === === http://www.geocities.com/SiliconValley/2499/fund.html ===