Hello everyone, My first program was written for the PIC 16C84 and now I would like to transfer it to the PIC 17C42. What would I need to change? Of course I've listed the processor and included the correct include file but in initializing the 17C42 I'm not sure what I'll need to do, anyhelp would be greatly appreciated. I initialized the 16C84 like this: (got this from a Microchip PIC workshop) InitPrt ; Initialization of ports to make A-input, b-output bsf STATUS, RP0 ;select bank1 movlw 0x1f ;value used to initialize data direction movwf TRISA ;set RA0-4 as inputs, TRISA6-7 are always bcf STATUS, RP0 ;select bank0 clrf PORTB ;initialize PORTB by setting output data bsf STATUS,RP0 ;select bank1 movlw 0x00 ;value sed to initialize data direction movwf TRISB ;set RB0-7 as outputs bcf STATUS,RP0 ;select bank0 return How do I initialize the 17C42? I've also seen some app notes use the 17C42 and use a string like: LIST P=17C42, C=120, T=ON, L=0, R=DEC I know what what the P= is but what or where can I find the meaning to C=120, T=ON, L=0, R=DEC? Thanks for your time in helping me figure this out. Ken Dougal slm5g@cc.usu.edu