SECTION	.text
		ALIGN	16
		BITS	32

		GLOBAL	_Diff
_Diff:
		; function returns a-b if called as Diff(a,b)
		; return value is expected in EAX by DJGPP compiler
	
		; first parameter is pushed second
		; move (copy) it from stack into register EAX
		MOV	EAX,[ESP+4]

		; second parameter is pushed first
		; move (copy) it from stack into register EBX
		MOV	EBX,[ESP+8]

		; Perform EAX = EAX-EBX
		SUB	EAX,EBX

		RET		; Return to calling program.