1 files changed, 92 insertions, 0 deletions
diff --git a/src/example/gb.asm b/src/example/gb.asm
new file mode 100644
index 0000000..15cc50b
--- /dev/null
+++ b/src/example/gb.asm
@@ -0,0 +1,92 @@
+	
+	cpu	gameboy
+	option	+list
+	option	list-labels,all
+
+	option	output-file,gb.rom
+	option	output-format,gameboy
+
+	option	gameboy-irq,vbl,vbl_code
+
+VRAM	equ	$8000
+SCRN	equ	$9800
+OAM	equ	$fe00
+LCDC	equ	$ff40
+STAT	equ	$ff41
+
+READY	equ	$ff81
+XPOS	equ	$ff82
+
+VBLANK	macro
+	push	af
+.wait
+	ldh	a,(LCDC)
+	cp	$91
+	jr	nz,wait
+
+	pop	af
+
+	endm
+
+
+	;
+	; **********
+	; CODE START
+	; **********
+	;
+	org	$150
+
+	di
+	xor	a
+	ldh	(READY),a
+	ld	sp,$fffe
+
+	; Set LCD so only sprites show
+	;
+	ld	a,$82
+	ldh	(LCDC),a
+	ld	a,$10
+	ldh	(STAT),a
+
+	; Copy to VRAM
+	;
+	ld	hl,VRAM
+	ld	de,sprite
+	ld	a,16
+
+	VBLANK
+
+.copy
+	ld	a,(hl+)
+	ld	(de),a
+	inc	de
+	dec	a
+	jr	nz,copy
+
+	ld	a,1
+	ldh	(READY),a
+
+.idle
+	halt
+	nop
+	jr	idle
+
+vbl_code:
+	ldh	a,(READY)
+	jr	z,finish
+
+	ldh	a,(XPOS)
+	inc	a
+	ldh	(XPOS),a
+	ld	(OAM+1),a
+	xor	a
+	ld	(OAM),a
+	ld	(OAM+2),a
+	ld	(OAM+3),a
+
+.finish
+	reti
+
+sprite:
+	defs	16,$ff
+