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'Changing from 16C84 to 17C42'
1997\02\16@133039 by slm5g

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
spam_OUTslm5gTakeThisOuTcc.usu.edu

1997\02\16@140533 by slm5g

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
.....slm5gKILLspam@spam@cc.usu.edu

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