Writing a program
Only after all of the preceding operations have been completed we are able to start writing a program. This sample program is fairly simple and serves to illustrate creation of a project.
PROCESSOR 16f84 #include "P16F84.inc" __CONFIG _CP_0FF & _WDT_0FF & _PWRTE_0N & _XT_0SC CBLOCK 0x0C ;RAM starting address HICNT ;Auxiliary variables for macro pausems LOCNT LOOPCNT ENDC ORG 0X00 ;Reset vector GOTO MAIN ORG 0X04 ;Interrupt vector GOTO ISR ;no interrupt routine INCLUDE "ROMUX_LIB.INC" MAIN ;Main program BANKSEL TRISB ;Select bank containing TRISB CLRF TRISB ;Port B is output BANKSEL P0RTB ;Select bank containing P0RTB LOOP MOVLW 0X00 ;Sraitch off diodes on port B MOVWF P0RTB PAUSEMS .500 ;500ms delay (0.5sec) MOVLW OXFF ;Switch on diodes on port B MOVWF P0RTB PAUSEMS .500 ;500ms delay (0.5sec) GOTO LOOP ;Jump to label Loop END
You should re-write the program to the newly opened window or just copy/paste it from the disk.
Main window with blink.asm program
When the program is copied to
"Blink.asm" window, we can use PROJECT -> BUILD ALL command to
translate the program to executable HEX form. The last sentence in the
window is the most important one, because it shows whether translation was
successful or not. "BUILD SUCCEEDED" is a message stating that translation
was successful and that there were no errors.
In case that error does show up, you need to double click on error message in 'Output' window. This will automatically take you to the assembler program, to the line where the error was encountered.
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