Top:	INC A
	DEC B
	JMP Top

---
	MOV A, 0x41
	MOV B, 0xE8
ABC:	MOV [B], A
	INC A
	INC B
	JMP ABC

---
	MOV A, 35d
	MOV B, 14d

GCD:	CMP A, B
	JE Done
	JA RedA

RedB:	SUB B, A
	JMP GCD

RedA:	SUB A, B
	JMP GCD

Done:	; regA (or regB) has GCD

--- Execute A, B, C
	MOV [0x20], 0x41
	MOV [0x21], 0x42
	MOV [0x22], 0x43
	JMP 0x20