#define STATUS1_MASK_SOFTBOOT   0x0001
#define STATUS1_MASK_COLDBOOT   0x0002
#define STATUS1_MASK_HALT       0x0004
#define STATUS1_MASK_MODE800    0x0008
#define STATUS1_MASK_BOOTX      0x0010
#define STATUS1_MASK_RDONLY     0x0040
#define STATUS1_MASK_MODEPBI    0x0080
#define STATUS1_MASK_ATX1050    0x8000

#define STATUS2_MASK_SPLASH     0x0800
#define STATUS2_MASK_TAPE_FULL  0x8000
#define STATUS2_MASK_TAPE_EMPTY 0x4000
#define STATUS2_MASK_TAPE_ACT   0x2000
#define STATUS2_MASK_TAPE_SLOW  0x1000

#define BUFFER_SIZE 8192

#if BUFFER_SIZE < 8192
#error BUFFER_SIZE is too small!
#endif

#define A800_SIO_TX_STAT  0x03
#define A800_SIO_RX       0x04
#define A800_SIO_RX_STAT  0x05
#define A800_SIO_GETDIV   0x06
#define A800_SIO_ERROR    0x07

#define A800_GET_REGISTER 0x08
#define A800_SET_REGISTER 0x09
#define A800_TAPE_ENQUEUE 0x0A

#define REG_CART1_SELECT  0x01
#define REG_CART2_SELECT  0x02
#define REG_RESET         0x03
#define REG_PAUSE         0x04
#define REG_FREEZER       0x05
#define REG_RESET_RNMI    0x06
#define REG_OPTION_FORCE  0x07
#define REG_DRIVE_LED     0x08
#define REG_XEX_LOADER    0x09
#define REG_SIO_TX        0x0A
#define REG_SIO_SETDIV    0x0B
#define TAPE_RESET        0x0C
#define REG_START_FORCE   0x0D
#define REG_SPACE_FORCE   0x0E

#define REG_ATARI_STATUS1 0x01
#define REG_ATARI_STATUS2 0x02

#define SDRAM_BASE        0x2000000
#define ATARI_BASE        0x0010000