Chapter 4. Instruction Set. Instruction Set Overview. PIC18F4520 devices incorporate the standard set of: 75 PIC18 core instructions, 8 extended set of instructions, f or the optimization of code. Standard Instruction Set. The standard PIC18 instruction set are :
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Example 5-5: How to clear RAM (BANK 1) using Indirect Addressing
LFSR FSR0, 100h ;
NEXT CLRF POSTINC0 ; Clear IND register then inc ptr
BTFSS FSR0H, 1 ; All done with ; Bank1?
BRA NEXT ; NO, clear next
CONTINUE ; YES, continue