// license:BSD-3-Clause // copyright-holders:David Haywood #ifndef MAME_MACHINE_SEGACDCD_H #define MAME_MACHINE_SEGACDCD_H #include "imagedev/chd_cd.h" #include "machine/timer.h" #include "sound/cdda.h" class lc89510_temp_device : public device_t { public: typedef device_delegate dma_delegate; typedef device_delegate interrupt_delegate; void set_is_neoCD(bool new_is_neoCD) { is_neoCD = new_is_neoCD; } template void set_type1_interrupt_callback(T &&... args) { m_type1_interrupt_callback.set(std::forward(args)...); } template void set_type2_interrupt_callback(T &&... args) { m_type2_interrupt_callback.set(std::forward(args)...); } template void set_type3_interrupt_callback(T &&... args) { m_type3_interrupt_callback.set(std::forward(args)...); } template void set_cdc_do_dma_callback(T &&... args) { m_segacd_dma_callback.set(std::forward(args)...); } template void set_cdrom_tag(T &&tag) { m_cdrom.set_tag(std::forward(tag)); } template void set_68k_tag(T &&tag) { m_68k.set_tag(std::forward(tag)); } lc89510_temp_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); uint16_t get_segacd_irq_mask() const { return segacd_irq_mask; } DECLARE_READ16_MEMBER( segacd_irq_mask_r ); DECLARE_WRITE16_MEMBER( segacd_irq_mask_w ); DECLARE_READ16_MEMBER( segacd_cdd_ctrl_r ); DECLARE_WRITE16_MEMBER( segacd_cdd_ctrl_w ); DECLARE_READ8_MEMBER( segacd_cdd_rx_r ); DECLARE_WRITE8_MEMBER( segacd_cdd_tx_w ); READ16_MEMBER( segacd_cdfader_r ); WRITE16_MEMBER( segacd_cdfader_w ); WRITE16_MEMBER( segacd_cdc_mode_address_w ); READ16_MEMBER( segacd_cdc_mode_address_r ); WRITE16_MEMBER( segacd_cdc_data_w ); READ16_MEMBER( segacd_cdc_data_r ); READ16_MEMBER( cdc_data_sub_r ); READ16_MEMBER( cdc_data_main_r ); void CDC_Do_DMA(running_machine& machine, int rate); uint8_t CDC_Reg_r(void); void CDC_Reg_w(uint8_t data); void reset_cd(); // NeoGeo CD stuff void neocd_cdd_tx_w(uint8_t data); uint8_t neocd_cdd_rx_r(); void NeoCDCommsControl(uint8_t clock, uint8_t send); void NeoCDCommsReset(); uint16_t nff0016_r(); void nff0016_set(uint16_t wordValue); void nff0002_set(uint16_t wordValue); char* LC8915InitTransfer(int NeoCDDMACount); void LC8915EndTransfer(); protected: static constexpr unsigned SECTOR_SIZE = 2352; static constexpr unsigned EXTERNAL_BUFFER_SIZE = (32 * 1024 * 2) + SECTOR_SIZE; // HACK for DMA handling dma_delegate m_segacd_dma_callback; interrupt_delegate m_type1_interrupt_callback; interrupt_delegate m_type2_interrupt_callback; interrupt_delegate m_type3_interrupt_callback; void Fake_CDC_Do_DMA(int &dmacount, uint8_t *CDC_BUFFER, uint16_t &dma_addrc, uint16_t &destination ); void dummy_interrupt_callback(); required_device m_cdrom; required_device m_cdda; // HACK for neoCD handling optional_device m_68k; bool is_neoCD; struct segacd_t { cdrom_file *cd; const cdrom_toc *toc; uint32_t current_frame; }; segacd_t segacd; uint8_t SCD_BUFFER[2560]; uint32_t SCD_STATUS; uint32_t SCD_STATUS_CDC; int32_t SCD_CURLBA; uint8_t SCD_CURTRK; uint16_t CDC_DECODE; uint16_t CDC_REG0; uint16_t CDC_REG1; uint8_t CDC_BUFFER[EXTERNAL_BUFFER_SIZE]; uint8_t CDD_RX[10]; uint8_t CDD_TX[10]; uint32_t CDD_STATUS; uint32_t CDD_MIN; uint32_t CDD_SEC; uint32_t CDD_FRAME; uint32_t CDD_EXT; uint16_t CDD_CONTROL; int16_t CDD_DONE; inline int to_bcd(int val, bool byte); void set_data_audio_mode(void); void CDD_DoChecksum(void); bool CDD_Check_TX_Checksum(void); void CDD_Export(bool neocd_hack = false); void scd_ctrl_checks(running_machine& machine); void scd_advance_current_readpos(void); int Read_LBA_To_Buffer(running_machine& machine); void CDD_GetStatus(void); void CDD_Stop(running_machine &machine); void CDD_GetPos(void); void CDD_GetTrackPos(void); void CDD_GetTrack(void); void CDD_Length(void); void CDD_FirstLast(void); void CDD_GetTrackAdr(void); void CDD_GetTrackType(void); uint32_t getmsf_from_regs(void); void CDD_Play(running_machine &machine); void CDD_Seek(void); void CDD_Pause(running_machine &machine); void CDD_Resume(running_machine &machine); void CDD_FF(running_machine &machine); void CDD_RW(running_machine &machine); void CDD_Open(void); void CDD_Close(void); void CDD_Init(void); void CDD_Default(void); void CDD_Reset(void); void CDC_Reset(void); void lc89510_Reset(void); void CDC_End_Transfer(running_machine& machine); uint16_t CDC_Host_r(running_machine& machine, uint16_t type); void CDD_Process(running_machine& machine, int reason); void CDD_Handle_TOC_Commands(void); bool CDD_Import(running_machine& machine); uint16_t segacd_irq_mask; /* NeoCD */ uint16_t nff0002; uint16_t nff0016; int32_t LC8951RegistersR[16]; int32_t LC8951RegistersW[16]; bool bNeoCDCommsClock; int32_t NeoCDCommsWordCount; int32_t NeoCD_StatusHack; void LC8951UpdateHeader(); virtual void device_start() override; virtual void device_reset() override; virtual void device_add_mconfig(machine_config &config) override; TIMER_DEVICE_CALLBACK_MEMBER( segacd_access_timer_callback ); }; DECLARE_DEVICE_TYPE(LC89510_TEMP, lc89510_temp_device) #endif // MAME_MACHINE_SEGACDCD_H