code-snippets.md

Ready-to-Use Code Snippets

Loop Template

AND R1, R1, #0 ; counter = 0 LD R2, MAX ; load limit LOOP ; Loop body here ADD R1, R1, #1 ; increment NOT R3, R2 ADD R3, R3, #1 ; R3 = -MAX ADD R3, R1, R3 ; counter - MAX BRn LOOP ; continue if < MAX

If-Else Template

LD R0, VALUE BRp POSITIVE BRz ZERO ; Negative case BRnzp DONE POSITIVE ; Positive case BRnzp DONE ZERO ; Zero case DONE

String Length Subroutine

; Input: R0 = string address ; Output: R1 = length STRLEN AND R1, R1, #0 ; length = 0 ADD R2, R0, #0 ; pointer LOOP LDR R3, R2, #0 ; get char BRz DONE ; null terminator? ADD R1, R1, #1 ; increment length ADD R2, R2, #1 ; next char BRnzp LOOP DONE RET