// license:BSD-3-Clause // copyright-holders:smf,R. Belmont,pSXAuthor,Carl #ifndef _included_psxcdrom_ #define _included_psxcdrom_ #include "imagedev/chd_cd.h" #include "sound/spu.h" #define MAX_PSXCD_TIMERS (4) //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MCFG_PSXCD_ADD(_tag, _devname) \ MCFG_DEVICE_ADD(_tag, PSXCD, 0) #define MCFG_PSXCD_IRQ_HANDLER(_devcb) \ devcb = &psxcd_device::set_irq_handler(*device, DEVCB_##_devcb); class psxcd_device : public cdrom_image_device { public: psxcd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // static configuration helpers template static devcb_base &set_irq_handler(device_t &device, _Object object) { return downcast(device).m_irq_handler.set_callback(object); } virtual image_init_result call_load() override; virtual void call_unload() override; DECLARE_WRITE8_MEMBER( write ); DECLARE_READ8_MEMBER( read ); void start_dma(uint8_t *mainram, uint32_t size); protected: virtual void device_start() override; virtual void device_stop() override; virtual void device_reset() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; virtual const tiny_rom_entry *device_rom_region() const override; private: void write_command(uint8_t byte); typedef void (psxcd_device::*cdcmd)(); struct command_result { uint8_t data[32], sz, res; command_result *next; }; union CDPOS { uint8_t b[4]; uint32_t w; }; void cdcmd_sync(); void cdcmd_nop(); void cdcmd_setloc(); void cdcmd_play(); void cdcmd_forward(); void cdcmd_backward(); void cdcmd_readn(); void cdcmd_standby(); void cdcmd_stop(); void cdcmd_pause(); void cdcmd_init(); void cdcmd_mute(); void cdcmd_demute(); void cdcmd_setfilter(); void cdcmd_setmode(); void cdcmd_getparam(); void cdcmd_getlocl(); void cdcmd_getlocp(); void cdcmd_gettn(); void cdcmd_gettd(); void cdcmd_seekl(); void cdcmd_seekp(); void cdcmd_test(); void cdcmd_id(); void cdcmd_reads(); void cdcmd_reset(); void cdcmd_readtoc(); void cdcmd_unknown12(); void cdcmd_illegal17(); void cdcmd_illegal18(); void cdcmd_illegal1d(); static const cdcmd cmd_table[31]; void illegalcmd(uint8_t cmd); void cmd_complete(command_result *res); void send_result(uint8_t res, uint8_t *data=nullptr, int sz=0, int delay=default_irq_delay, uint8_t errcode = 0); command_result *prepare_result(uint8_t res, uint8_t *data=nullptr, int sz=0, uint8_t errcode = 0); void start_read(); void start_play(); void stop_read(); void read_sector(); void play_sector(); uint32_t sub_loc(CDPOS src1, CDPOS src2); int add_system_event(int type, uint64_t t, command_result *ptr); uint8_t bcd_to_decimal(const uint8_t bcd) { return ((bcd>>4)*10)+(bcd&0xf); } uint8_t decimal_to_bcd(const uint8_t dec) { return ((dec/10)<<4)|(dec%10); } uint32_t msf_to_lba_ps(uint32_t msf) { msf = msf_to_lba(msf); return (msf>150)?(msf-150):msf; } uint32_t lba_to_msf_ps(uint32_t lba) { return lba_to_msf_alt(lba+150); } static const unsigned int sector_buffer_size=16, default_irq_delay=16000; //480; //8000; //2000<<2; static const unsigned int raw_sector_size=2352; uint8_t cmdbuf[64], mode, secbuf[sector_buffer_size][raw_sector_size]; uint8_t filter_file, filter_channel, lastsechdr[8], status; int rdp; uint8_t m_cursec, sectail; uint16_t m_transcurr; uint8_t m_transbuf[raw_sector_size]; command_result *res_queue, *m_int1; struct { uint8_t sr, ir, imr; struct { uint8_t ll, lr, rl, rr; } vol; } m_regs; CDPOS loc, curpos; #ifdef LSB_FIRST enum { M = 2, S = 1, F = 0 }; #else enum { M = 1, S = 2, F = 3 }; #endif bool open, m_mute, m_dmaload; device_timer_id next_read_event; int64_t next_sector_t; unsigned int autopause_sector, start_read_delay, read_sector_cycles, preread_delay; uint32_t m_param_count; uint32_t m_sysclock; emu_timer *m_timers[MAX_PSXCD_TIMERS]; bool m_timerinuse[MAX_PSXCD_TIMERS]; devcb_write_line m_irq_handler; cpu_device *m_maincpu; spu_device *m_spu; }; // device type definition extern const device_type PSXCD; #endif