Assembler simulator bubble sort

bubble_sort.asm

; Runs on https://schweigi.github.io/assembler-simulator/
; https://en.wikipedia.org/wiki/Bubble_sort

	MOV C, data	; C tracks the address of end
	ADD C, 16	; of the unsorted section of data.

start:
	DEC C           ; One byte is sorted each pass
	MOV D, data	; Start of the data
bubble:
	MOV A, [D]
	CMP A, [D+1]    ; Compare two adjacent values
	JNA noswap      ; jump if the don't need swapping
	MOV B, [D+1]	; swap the two values
	MOV [D+1], A
	MOV [D], B
noswap:	
	INC D		; Move along the data one byte
	CMP D, C
	JB bubble	; loop if there's more unsorted data
	CMP C, data
	JNB start	; start again unless we've sorted all values.
	HLT


	DB "_______"	; Align the sorted data nicely.
data:
	DB "QWERTYUIOPASDFGH"  ; 16 characters to sort.