view fib.s68 @ 1742:6290c88949bd

Fixed CPI/CPD/CPIR/CPDR in new Z80 core
author Michael Pavone <pavone@retrodev.com>
date Mon, 04 Feb 2019 23:46:35 -0800
parents f7fe240a7da6
children b7ecd0d6a77b
line wrap: on
line source

    dc.l $0, start
start:
	moveq #42, d0
	bsr fib
	reset
fib:
	cmp.l #2, d0
	blt base
	subq.l #1, d0
	move.l d0, -(a7)
	bsr fib
	move.l (a7), d1
	exg d0, d1
	move.l d1, (a7)
	subq.l #1, d0
	bsr fib
	move.l (a7)+, d1
	add.l d1, d0
	rts
base:
	moveq #1, d0
	rts