OBJECT AudChannel
	ptr:PTR TO UWORD,
	len:UWORD,
	per:UWORD,
	vol:UWORD,
	dat:UWORD,
	pad[2]:UWORD

OBJECT SpriteDef
	pos:UWORD,
	ctl:UWORD,
	dataa:UWORD,
	datab:UWORD

OBJECT Custom
	bltddat:UWORD,
	dmaconr:UWORD,
	vposr:UWORD,
	vhposr:UWORD,
	dskdatr:UWORD,
	joy0dat:UWORD,
	joy1dat:UWORD,
	clxdat:UWORD,
	adkconr:UWORD,
	pot0dat:UWORD,
	pot1dat:UWORD,
	potinp:UWORD,
	serdatr:UWORD,
	dskbytr:UWORD,
	intenar:UWORD,
	intreqr:UWORD,
	dskpt:PTR,
	dsklen:UWORD,
	dskdat:UWORD,
	refptr:UWORD,
	vposw:UWORD,
	vhposw:UWORD,
	copcon:UWORD,
	serdat:UWORD,
	serper:UWORD,
	potgo:UWORD,
	joytest:UWORD,
	strequ:UWORD,
	strvbl:UWORD,
	strhor:UWORD,
	strlong:UWORD,
	bltcon0:UWORD,
	bltcon1:UWORD,
	bltafwm:UWORD,
	bltalwm:UWORD,
	bltcpt:PTR,
	bltbpt:PTR,
	bltapt:PTR,
	bltdpt:PTR,
	bltsize:UWORD,
	pad2d:UBYTE,
	bltcon0l:UBYTE,
	bltsizv:UWORD,
	bltsizh:UWORD,
	bltcmod:UWORD,
	bltbmod:UWORD,
	bltamod:UWORD,
	bltdmod:UWORD,
	pad34[4]:UWORD,
	bltcdat:UWORD,
	bltbdat:UWORD,
	bltadat:UWORD,
	pad3b[3]:UWORD,
	deniseid:UWORD,
	dsksync:UWORD,
	cop1lc:ULONG,
	cop2lc:ULONG,
	copjmp1:UWORD,
	copjmp2:UWORD,
	copins:UWORD,
	diwstrt:UWORD,
	diwstop:UWORD,
	ddfstrt:UWORD,
	ddfstop:UWORD,
	dmacon:UWORD,
	clxcon:UWORD,
	intena:UWORD,
	intreq:UWORD,
	adkcon:UWORD,
	aud[4]:AudChannel,
	bplpt[8]:PTR,
	bplcon0:UWORD,
	bplcon1:UWORD,
	bplcon2:UWORD,
	bplcon3:UWORD,
	bpl1mod:UWORD,
	bpl2mod:UWORD,
	bplcon4:UWORD,
	clxcon2:UWORD,
	bpldat[8]:UWORD,
	sprpt[8]:PTR,
	spr[8]:SpriteDef,
	color[32]:UWORD,
	htotal:UWORD,
	hsstop:UWORD,
	hbstrt:UWORD,
	hbstop:UWORD,
	vtotal:UWORD,
	vsstop:UWORD,
	vbstrt:UWORD,
	vbstop:UWORD,
	sprhstrt:UWORD,
	sprhstop:UWORD,
	bplhstrt:UWORD,
	bplhstop:UWORD,
	hhposw:UWORD,
	hhposr:UWORD,
	beamcon0:UWORD,
	hsstrt:UWORD,
	vsstrt:UWORD,
	hcenter:UWORD,
	diwhigh:UWORD,
	padf3[11]:UWORD,
	fmode:UWORD

#define VARVBLANK 	$1000	
#define LOLDIS 		$0800	
#define CSCBLANKEN 	$0400	
#define VARVSYNC 	$0200	
#define VARHSYNC 	$0100	
#define VARBEAM 	$0080	
#define DISPLAYDUAL 	$0040	
#define DISPLAYPAL 	$0020	
#define VARCSYNC 	$0010	
#define CSBLANK 	$0008	
#define CSYNCTRUE 	$0004	
#define VSYNCTRUE 	$0002	
#define HSYNCTRUE 	$0001	
#define USE_BPLCON3 	1
#define BPLCON2_ZDCTEN 		(1<<10)
#define BPLCON2_ZDBPEN 		(1<<11)
#define BPLCON2_ZDBPSEL0 	(1<<12)
#define BPLCON2_ZDBPSEL1 	(1<<13)
#define BPLCON2_ZDBPSEL2 	(1<<14)
#define BPLCON3_EXTBLNKEN 	(1<<0)
#define BPLCON3_EXTBLKZD 	(1<<1)
#define BPLCON3_ZDCLKEN 	(1<<2)
#define BPLCON3_BRDNTRAN 	(1<<4)
#define BPLCON3_BRDNBLNK 	(1<<5)