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87 lines
3.2 KiB
C++
87 lines
3.2 KiB
C++
#ifndef __PCEFAST_PCECD_Drive_H
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#define __PCEFAST_PCECD_Drive_H
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#include "../include/blip/Blip_Buffer.h"
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typedef int32 pcecd_drive_timestamp_t;
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class CDIF;
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struct pcecd_drive_bus_t
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{
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// Data bus(FIXME: we should have a variable for the target and the initiator, and OR them together to be truly accurate).
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uint8 DB;
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uint32 signals;
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};
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extern pcecd_drive_bus_t cd_bus; // Don't access this structure directly by name outside of pcecd_drive.c, but use the macros below.
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// Signals under our(the "target") control.
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#define PCECD_Drive_IO_mask 0x001
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#define PCECD_Drive_CD_mask 0x002
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#define PCECD_Drive_MSG_mask 0x004
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#define PCECD_Drive_REQ_mask 0x008
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#define PCECD_Drive_BSY_mask 0x010
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// Signals under the control of the initiator(not us!)
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#define PCECD_Drive_kingRST_mask 0x020
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#define PCECD_Drive_kingACK_mask 0x040
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#define PCECD_Drive_kingSEL_mask 0x100
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#define BSY_signal ((bool)(cd_bus.signals & PCECD_Drive_BSY_mask))
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#define ACK_signal ((bool)(cd_bus.signals & PCECD_Drive_kingACK_mask))
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#define RST_signal ((bool)(cd_bus.signals & PCECD_Drive_kingRST_mask))
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#define MSG_signal ((bool)(cd_bus.signals & PCECD_Drive_MSG_mask))
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#define SEL_signal ((bool)(cd_bus.signals & PCECD_Drive_kingSEL_mask))
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#define REQ_signal ((bool)(cd_bus.signals & PCECD_Drive_REQ_mask))
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#define IO_signal ((bool)(cd_bus.signals & PCECD_Drive_IO_mask))
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#define CD_signal ((bool)(cd_bus.signals & PCECD_Drive_CD_mask))
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#define DB_signal ((uint8)cd_bus.DB)
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#define PCECD_Drive_GetDB() DB_signal
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#define PCECD_Drive_GetBSY() BSY_signal
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#define PCECD_Drive_GetIO() IO_signal
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#define PCECD_Drive_GetCD() CD_signal
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#define PCECD_Drive_GetMSG() MSG_signal
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#define PCECD_Drive_GetREQ() REQ_signal
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// Should we phase out getting these initiator-driven signals like this(the initiator really should keep track of them itself)?
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#define PCECD_Drive_GetACK() ACK_signal
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#define PCECD_Drive_GetRST() RST_signal
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#define PCECD_Drive_GetSEL() SEL_signal
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void PCECD_Drive_Power(pcecd_drive_timestamp_t system_timestamp);
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void PCECD_Drive_SetDB(uint8 data);
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// These PCECD_Drive_Set* functions are kind of misnomers, at least in comparison to the PCECD_Drive_Get* functions...
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// They will set/clear the bits corresponding to the KING's side of the bus.
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void PCECD_Drive_SetACK(bool set);
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void PCECD_Drive_SetSEL(bool set);
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void PCECD_Drive_SetRST(bool set);
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uint32 PCECD_Drive_Run(pcecd_drive_timestamp_t);
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void PCECD_Drive_ResetTS(void);
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enum
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{
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PCECD_Drive_IRQ_DATA_TRANSFER_DONE = 1,
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PCECD_Drive_IRQ_DATA_TRANSFER_READY,
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PCECD_Drive_IRQ_MAGICAL_REQ
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};
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void PCECD_Drive_GetCDDAValues(int16 *left, int16 *right);
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void PCECD_Drive_SetLog(void (*logfunc)(const char *, const char *, ...)) MDFN_COLD;
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void PCECD_Drive_Init(int CDDATimeDiv, Blip_Buffer *leftbuf, Blip_Buffer *rightbuf, uint32 TransferRate, uint32 SystemClock, void (*IRQFunc)(int), void (*SSCFunc)(uint8, int)) MDFN_COLD;
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void PCECD_Drive_Close(void) MDFN_COLD;
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void PCECD_Drive_SetTransferRate(uint32 TransferRate);
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void PCECD_Drive_SetCDDAVolume(unsigned vol); // vol of 65536 = 1.0 = maximum.
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int PCECD_Drive_StateAction(StateMem *sm, int load, int data_only, const char *sname);
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void PCECD_Drive_SetDisc(bool tray_open, CDIF *cdif, bool no_emu_side_effects) MDFN_COLD;
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#endif
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