z80_ctrl.h

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#ifndef _Z80_CTRL_H_
#define _Z80_CTRL_H_


#define Z80_HALT_PORT                   0xA11100
#define Z80_RESET_PORT                  0xA11200

#define Z80_RAM_START                   0xA00000

#define Z80_RAM_END                     0xA01FFF

#define Z80_RAM                         Z80_RAM_START

#define Z80_RAM_LEN                     ((Z80_RAM_END - Z80_RAM_START) + 1)

#define Z80_YM2612                      0xA04000

#define Z80_BANK_REGISTER               0xA06000

#define Z80_DRV_COMMAND                 0xA00100

#define Z80_DRV_STATUS                  0xA00102

#define Z80_DRV_PARAMS                  0xA00104

// default command and status value
#define Z80_DRV_COM_PLAY_SFT            0
#define Z80_DRV_COM_STOP_SFT            4
#define Z80_DRV_STAT_PLAYING_SFT        0
#define Z80_DRV_STAT_READY_SFT          7

#define Z80_DRV_COM_PLAY                (1 << Z80_DRV_COM_PLAY_SFT)

#define Z80_DRV_COM_STOP                (1 << Z80_DRV_COM_STOP_SFT)

#define Z80_DRV_STAT_PLAYING            (1 << Z80_DRV_STAT_PLAYING_SFT)

#define Z80_DRV_STAT_READY              (1 << Z80_DRV_STAT_READY_SFT)

// channel definition
#define Z80_DRV_CH0_SFT                 0
#define Z80_DRV_CH1_SFT                 1
#define Z80_DRV_CH2_SFT                 2
#define Z80_DRV_CH3_SFT                 3

#define Z80_DRV_CH0                     (1 << Z80_DRV_CH0_SFT)

#define Z80_DRV_CH1                     (1 << Z80_DRV_CH1_SFT)

#define Z80_DRV_CH2                     (1 << Z80_DRV_CH2_SFT)

#define Z80_DRV_CH3                     (1 << Z80_DRV_CH3_SFT)


#define Z80_DRIVER_NULL                 0

#define Z80_DRIVER_PCM                  1

#define Z80_DRIVER_2ADPCM               2

#define Z80_DRIVER_4PCM                 4
#define Z80_DRIVER_4PCM_ENV             Z80_DRIVER_4PCM

#define Z80_DRIVER_XGM                  5

#define Z80_DRIVER_CUSTOM               -1

#define Z80_DRIVER_DEFAULT              Z80_DRIVER_XGM


void Z80_init();

bool Z80_isBusTaken();
void Z80_requestBus(bool wait);
bool Z80_getAndRequestBus(bool wait);

void Z80_releaseBus();

void Z80_startReset();
void Z80_endReset();

void Z80_setBank(const u16 bank);

u8 Z80_read(const u16 addr);
void Z80_write(const u16 addr, const u8 value);

void Z80_clear(const u16 dest, const u16 size, const bool resetz80);
void Z80_upload(const u16 dest, const u8 *data, const u16 size, const bool resetz80);
void Z80_download(const u16 from, u8 *dest, const u16 size);

u16  Z80_getLoadedDriver();
void Z80_unloadDriver();
void Z80_loadDriver(const u16 driver, const bool waitReady);
void Z80_loadCustomDriver(const u8 *drv, u16 size);

u16  Z80_isDriverReady();


#endif // _Z80_CTRL_H_