microcontroller - How to move a variable's value into another variable in assembly -

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i trying learn assembly programming mplab x , pic18f1320 microcontroller. have been following mpasm user's guide (http://ww1.microchip.com/downloads/en/devicedoc/33014j.pdf) , have gotten led blink rb0 pin on microcontroller. wrote program make led blink once every 512 ticks. having trouble figuring out how change delay 512 variable quantity can change somewhere else in code. ideally, line

        movf    0xff,count1

would replaced 

        count1=delay1

where delay1 variable set 0x20 earlier in code.

here code:

#include "p18f1320.inc"   config  osc = intio1          ; oscillator selection bits (internal rc oscillator, clko function on ra6 , port function on ra7)   cblock 0x20    ;start of data section  count1         ;delay variable  delay1         ;length of delay  endc          org     00          ;\         movwf   portb       ; |         movlw   0x00        ; |         movwf   trisb       ; |--start program , configure i/o pins         movlw   0x00        ; |         movwf   adcon1      ; |         movlw   b'00000110' ;/          movwf   delay1      ; set variable delay1=0x20         movlw   0x20        ;/  loop    call blinkonce      ; blink loop         goto loop           ;/  blinkonce                   ;\         bsf     portb,4     ; |         call    delay       ; |--makes i/o pin rb4 turn on , off once delay in between         bcf     portb,4     ; |         call    delay       ;/ delay         movf    0xff,count1 ;i want able set count1=delay1 right here  loop2   decfsz count1, 1    ; delay loop length=count1         goto loop2          ;/          return  ; end program         end     ;/

thanks!

on pic18 device can use movff instruction after - copy value between 2 registers. movf instruction allows copy value register working register.

also ordering of movlw , movwf instructions @ start of program front. call movlw load constant value out of program memory working register, movwf copy value out of working register data memory.

this site has online pic simulator , tutorials explains how works in more detail:

http://www.microcontrollerjs.com


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