/* Page Zero */

#define COLOR1	0x00
#define COLOR2	0x01
#define MATCH	0x02
#define XX	0x03
#define YY	0x04
#define YADD	0x05
#define LOOP	0x06
#define MEMPTRL	0x07
#define MEMPTRH	0x08
#define DISP_PAGE	0x09
#define DRAW_PAGE	0x0a
#define TEMPY		0xfb
#define OUTL		0xfe
#define OUTH		0xff

/* Zero page addresses */
#define WNDLFT  0x20
#define WNDWDTH 0x21
#define WNDTOP  0x22
#define WNDBTM  0x23
#define CH      0x24
#define CV      0x25
#define GBASL   0x26
#define GBASH   0x27
#define BASL    0x28
#define BASH    0x29
#define BAS2L   0x2A
#define BAS2H   0x2B
#define H2      0x2C
#define V2      0x2D
#define MASK    0x2E
#define COLOR   0x30
#define INVFLG  0x32
#define YSAV    0x34
#define YSAV1   0x35
#define CSWL    0x36
#define CSWH    0x37