#define KEYBOARD	0xC000
#define	CLR80STORE	0xC000
#define SET80STORE	0xC001
#define RDMAINRAM	0xC002
#define RDCARDRAM	0xC003
#define WRMAINRAM	0xC004
#define WRCARDRAM	0xC005
#define SETSLOTCXROM	0xC006
#define SETINTCXROM	0xC007
#define SETSTDZP	0xC008
#define SETALTZP	0xC009
#define SETINTC3ROM	0xC00A
#define SETSLOTC3ROM	0xC00B
#define	CLR80VID	0xC00C
#define SET80VID	0xC00D
#define CLRALTCHAR	0xC00E
#define SETALTCHAR	0xC00F

#define KBDSTRB		0xC010
#define	RDLCBNK2	0xC011
#define	RDLCRAM		0xC012
#define	RDRAMRD		0xC013
#define	RDRAMWRT	0xC014
#define	RDCXROM		0xC015
#define	RDALTZP		0xC016
#define	RDC3ROM		0xC017
#define	RD80STORE	0xC018
#define	RDVBLBAR	0xC019
#define	RDTEXT		0xC01A
#define	RDMIXED		0xC01B
#define	RDPAGE2		0xC01C
#define	RDHIRES		0xC01D
#define	RDALTCHAR	0xC01E
#define	RD80COL		0xC01F

#define TAPEOUT		0xC020
#define PRNTOUT		0xC021		/* Virtual printer */
#define SPKR		0xC030

#define TXTCLR		0xC050
#define TXTSET		0xC051
#define MIXCLR		0xC052
#define MIXSET		0xC053
#define LOWSCR		0xC054
#define	HISCR		0xC055
#define LOWRES		0xC056
#define HIRES		0xC057
#define CLRAN0		0xC058
#define SETAN0		0xC059
#define CLRAN1		0xC05A
#define SETAN1		0xC05B
#define CLRAN2		0xC05C
#define SETAN2		0xC05D
#define CLRAN3		0xC05E
#define SETDHIRES	0xC05E
#define SETAN3		0xC05F
#define CLRDHIRES	0xC05F

#define	TAPEIN		0xC060
#define	BUTN0		0xC061
#define	BUTN1		0xC062
#define	BUTN2		0xC063
#define PADDL0		0xC064
#define PADDL1		0xC065
#define PADDL2		0xC066
#define PADDL3		0xC067

#define PTRIG           0xC070
#define SETIOUDIS	0xC07E
#define RDIOUDIS        0xC07E
#define CLRIOUDIS	0xC07F
#define RDDHIRES	0xC07F

#define CLRROM		0xCFFF

/* LSB are graphics switches */
#define SS_TEXT		(1<<0)
#define SS_MIXED	(1<<1)
#define SS_PAGE2	(1<<2)
#define SS_HIRES	(1<<3)
#define SS_80COL	(1<<4)
#define SS_DHIRES	(1<<5)
#define SS_80STORE	(1<<6)
#define IOU_VIDEO_SS_MASK	(0x7f)

#define SS_ALTCHAR	(1<<7)
#define SS_RAMRD	(1<<8)
#define SS_RAMWRT	(1<<9)
#define SS_SLOTCXROM	(1<<10)
#define SS_ALTZP	(1<<11)
#define SS_SLOTC3ROM	(1<<12)
#define SS_IOUDIS	(1<<13)
#define SS_LCBNK2	(1<<14)
#define SS_LCRAMRD	(1<<15)
#define SS_LCRAM	SS_LCRAMRD

/* #define SS_LCRAMWRT	(1<<16) */
/* #define SS_VBLBAR	(1<<17) */
/* #define SS_EXPNROM	(1<<18)		80 column ROM $C800-$CFFF active  */

/* #define SS_AN0		(1<<19) */
/* #define SS_AN1		(1<<20) */
/* #define SS_AN2		(1<<21) */
/* #define SS_AN3		(1<<22) */

#define SS_LCRAMWRT	(1<<1)
#define SS_VBLBAR	(1<<2)
#define SS_EXPNROM	(1<<3)		/* 80 column ROM $C800-$CFFF active */

#define SS_AN0		(1<<4)
#define SS_AN1		(1<<5)
#define SS_AN2		(1<<6)
#define SS_AN3		(1<<7)