mirror of
https://github.com/RetroDECK/Supermodel.git
synced 2024-11-26 07:35:40 +00:00
383 lines
11 KiB
C++
383 lines
11 KiB
C++
/**
|
|
** Supermodel
|
|
** A Sega Model 3 Arcade Emulator.
|
|
** Copyright 2011 Bart Trzynadlowski
|
|
**
|
|
** This file is part of Supermodel.
|
|
**
|
|
** Supermodel is free software: you can redistribute it and/or modify it under
|
|
** the terms of the GNU General Public License as published by the Free
|
|
** Software Foundation, either version 3 of the License, or (at your option)
|
|
** any later version.
|
|
**
|
|
** Supermodel is distributed in the hope that it will be useful, but WITHOUT
|
|
** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
** FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
** more details.
|
|
**
|
|
** You should have received a copy of the GNU General Public License along
|
|
** with Supermodel. If not, see <http://www.gnu.org/licenses/>.
|
|
**/
|
|
|
|
/*
|
|
* Model3.h
|
|
*
|
|
* Header file defining the CModel3, CModel3Config, and CModel3Inputs classes.
|
|
*/
|
|
|
|
#ifndef INCLUDED_MODEL3_H
|
|
#define INCLUDED_MODEL3_H
|
|
|
|
/*
|
|
* CModel3Config:
|
|
*
|
|
* Settings used by CModel3.
|
|
*/
|
|
class CModel3Config
|
|
{
|
|
public:
|
|
bool multiThreaded; // Multi-threading (enabled if TRUE)
|
|
|
|
// PowerPC clock frequency in MHz (minimum: 1 MHz)
|
|
inline void SetPowerPCFrequency(unsigned f)
|
|
{
|
|
if ((f<1) || (f>1000))
|
|
{
|
|
ErrorLog("PowerPC frequency must be between 1 and 1000 MHz; setting to 40 MHz.");
|
|
f = 40;
|
|
}
|
|
ppcFrequency = f*1000000;
|
|
}
|
|
inline unsigned GetPowerPCFrequency(void)
|
|
{
|
|
return ppcFrequency/1000000;
|
|
}
|
|
|
|
// Defaults
|
|
CModel3Config(void)
|
|
{
|
|
multiThreaded = false; // disable by default
|
|
ppcFrequency = 40*1000000; // 40 MHz
|
|
}
|
|
|
|
private:
|
|
unsigned ppcFrequency; // in Hz
|
|
};
|
|
|
|
/*
|
|
* CModel3:
|
|
*
|
|
* A complete Model 3 system.
|
|
*
|
|
* Inherits CBus in order to pass the address space handlers to devices that
|
|
* may need them (CPU, DMA, etc.)
|
|
*
|
|
* NOTE: Currently NOT re-entrant due to a non-OOP PowerPC core. Do NOT create
|
|
* create more than one CModel3 object!
|
|
*/
|
|
class CModel3: public CBus, public CPCIDevice
|
|
{
|
|
public:
|
|
/*
|
|
* ReadPCIConfigSpace(device, reg, bits, offset):
|
|
*
|
|
* Handles unknown PCI devices. See CPCIDevice definition for more details.
|
|
*
|
|
* Parameters:
|
|
* device Device number.
|
|
* reg Register number.
|
|
* bits Bit width of access (8, 16, or 32 only).;
|
|
* offset Byte offset within register, aligned to the specified bit
|
|
* width, and offset from the 32-bit aligned base of the
|
|
* register number.
|
|
*
|
|
* Returns:
|
|
* Register data.
|
|
*/
|
|
UINT32 ReadPCIConfigSpace(unsigned device, unsigned reg, unsigned bits, unsigned width);
|
|
|
|
/*
|
|
* WritePCIConfigSpace(device, reg, bits, offset, data):
|
|
*
|
|
* Handles unknown PCI devices. See CPCIDevice definition for more details.
|
|
*
|
|
* Parameters:
|
|
* device Device number.
|
|
* reg Register number.
|
|
* bits Bit width of access (8, 16, or 32 only).
|
|
* offset Byte offset within register, aligned to the specified bit
|
|
* width, and offset from the 32-bit aligned base of the
|
|
* register number.
|
|
* data Data.
|
|
*/
|
|
void WritePCIConfigSpace(unsigned device, unsigned reg, unsigned bits, unsigned width, UINT32 data);
|
|
|
|
/*
|
|
* Read8(addr):
|
|
* Read16(addr):
|
|
* Read32(addr):
|
|
* Read64(addr):
|
|
*
|
|
* Read a byte, 16-bit half word, 32-bit word, or 64-bit double word from
|
|
* the PowerPC address space. This implements the PowerPC address bus. Note
|
|
* that it is big endian, so when accessing from a little endian device,
|
|
* the byte order must be manually reversed.
|
|
*
|
|
* Parameters:
|
|
* addr Address to read.
|
|
*
|
|
* Returns:
|
|
* Data at the address.
|
|
*/
|
|
UINT8 Read8(UINT32 addr);
|
|
UINT16 Read16(UINT32 addr);
|
|
UINT32 Read32(UINT32 addr);
|
|
UINT64 Read64(UINT32 addr);
|
|
|
|
/*
|
|
* Write8(addr, data):
|
|
* Write16(addr, data):
|
|
* Write32(addr, data):
|
|
* Write64(addr, data):
|
|
*
|
|
* Write a byte, half word, word, or double word to the PowerPC address
|
|
* space. Note that everything is stored in big endian form, so when
|
|
* accessing with a little endian device, the byte order must be manually
|
|
* reversed.
|
|
*
|
|
* Parameters:
|
|
* addr Address to write.
|
|
* data Data to write.
|
|
*/
|
|
void Write8(UINT32 addr, UINT8 data);
|
|
void Write16(UINT32 addr, UINT16 data);
|
|
void Write32(UINT32 addr, UINT32 data);
|
|
void Write64(UINT32 addr, UINT64 data);
|
|
|
|
/*
|
|
* SaveState(SaveState):
|
|
*
|
|
* Saves an image of the current state. Must never be called while emulator
|
|
* is running (inside RunFrame()).
|
|
*
|
|
* Parameters:
|
|
* SaveState Block file to save state information to.
|
|
*/
|
|
void SaveState(CBlockFile *SaveState);
|
|
|
|
/*
|
|
* LoadState(SaveState):
|
|
*
|
|
* Loads and resumes execution from a state image. Modifies data that may
|
|
* be used by multiple threads -- use with caution and ensure threads are
|
|
* not accessing data that will be touched. Must never be called while
|
|
* emulator is running (inside RunFrame()).
|
|
*
|
|
* Parameters:
|
|
* SaveState Block file to load state information from.
|
|
*/
|
|
void LoadState(CBlockFile *SaveState);
|
|
|
|
/*
|
|
* SaveNVRAM(NVRAM):
|
|
*
|
|
* Saves an image of the current NVRAM state.
|
|
*
|
|
* Parameters:
|
|
* NVRAM Block file to save NVRAM to.
|
|
*/
|
|
void SaveNVRAM(CBlockFile *NVRAM);
|
|
|
|
/*
|
|
* LoadNVRAM(NVRAM):
|
|
*
|
|
* Loads an NVRAM image.
|
|
*
|
|
* Parameters:
|
|
* NVRAM Block file to load NVRAM state from.
|
|
*/
|
|
void LoadNVRAM(CBlockFile *NVRAM);
|
|
|
|
/*
|
|
* ClearNVRAM(void):
|
|
*
|
|
* Clears all NVRAM (backup RAM and EEPROM).
|
|
*/
|
|
void ClearNVRAM(void);
|
|
|
|
/*
|
|
* RunFrame(void):
|
|
*
|
|
* Runs one frame (assuming 60 Hz video refresh rate).
|
|
*/
|
|
void RunFrame(void);
|
|
|
|
/*
|
|
* Reset(void):
|
|
*
|
|
* Resets the system. Does not modify non-volatile memory.
|
|
*/
|
|
void Reset(void);
|
|
|
|
/*
|
|
* GetGameInfo(void):
|
|
*
|
|
* Returns:
|
|
* A pointer to the presently loaded game's information structure (or
|
|
* NULL if no ROM set has yet been loaded).
|
|
*/
|
|
const struct GameInfo * GetGameInfo(void);
|
|
|
|
/*
|
|
* LoadROMSet(GameList, zipFile):
|
|
*
|
|
* Loads a complete ROM set from the specified ZIP archive.
|
|
*
|
|
* Parameters:
|
|
* GameList List of all supported games and their ROMs.
|
|
* zipFile ZIP file to load from.
|
|
*
|
|
* Returns:
|
|
* OKAY if successful, FAIL otherwise. Prints errors.
|
|
*/
|
|
BOOL LoadROMSet(const struct GameInfo *GameList, const char *zipFile);
|
|
|
|
/*
|
|
* AttachRenderers(Render2DPtr, Render3DPtr):
|
|
*
|
|
* Attaches the renderers to the appropriate device objects.
|
|
*
|
|
* Parameters:
|
|
* Render2DPtr Pointer to a tile renderer object.
|
|
* Render3DPtr Same as above but for a 3D renderer.
|
|
*/
|
|
void AttachRenderers(CRender2D *Render2DPtr, CRender3D *Render3DPtr);
|
|
|
|
/*
|
|
* AttachInputs(InputsPtr):
|
|
*
|
|
* Attaches OSD-managed inputs.
|
|
*
|
|
* Parameters:
|
|
* InputsPtr Pointer to the object containing input states.
|
|
*/
|
|
void AttachInputs(CInputs *InputsPtr);
|
|
|
|
/*
|
|
* Init(void):
|
|
*
|
|
* One-time initialization of the context. Must be called prior to all
|
|
* other members. Allocates memory and initializes device states.
|
|
*
|
|
* Returns:
|
|
* OKAY is successful, otherwise FAILED if a non-recoverable error
|
|
* occurred. Prints own error messages.
|
|
*/
|
|
BOOL Init(void);
|
|
|
|
/*
|
|
* CModel3(void):
|
|
* ~CModel3(void):
|
|
*
|
|
* Constructor and destructor for Model 3 class. Constructor performs a
|
|
* bare-bones initialization of object; does not perform any memory
|
|
* allocation or any actions that can fail. The destructor will deallocate
|
|
* memory and free resources used by the object (and its child objects).
|
|
*/
|
|
CModel3(void);
|
|
~CModel3(void);
|
|
|
|
/*
|
|
* Private Property.
|
|
* Tresspassers will be shot! ;)
|
|
*/
|
|
private:
|
|
// Private member functions
|
|
UINT8 ReadInputs(unsigned reg);
|
|
void WriteInputs(unsigned reg, UINT8 data);
|
|
UINT32 ReadSecurity(unsigned reg);
|
|
void WriteSecurity(unsigned reg, UINT32 data);
|
|
void SetCROMBank(unsigned idx);
|
|
UINT8 ReadSystemRegister(unsigned reg);
|
|
void WriteSystemRegister(unsigned reg, UINT8 data);
|
|
void Patch(void);
|
|
|
|
void RunMainBoardFrame(); // Runs the main board (PPC) for a frame
|
|
bool StartThreads(); // Starts all threads
|
|
void StopThreads(); // Stops all threads
|
|
void DeleteThreadObjects(); // Deletes all threads and synchronization objects
|
|
|
|
static int StartSoundBoardThread(void *data); // Callback to start sound board thread
|
|
static int StartDriveBoardThread(void *data); // Callback to start drive board thread
|
|
|
|
void RunSoundBoardThread(); // Runs sound board thread
|
|
void RunDriveBoardThread(); // Runs drive board thread
|
|
|
|
// Game and hardware information
|
|
const struct GameInfo *Game;
|
|
|
|
// Game inputs
|
|
CInputs *Inputs;
|
|
|
|
// Input registers (game controls)
|
|
UINT8 inputBank;
|
|
UINT8 serialFIFO1, serialFIFO2;
|
|
UINT8 gunReg;
|
|
int adcChannel;
|
|
|
|
// MIDI port
|
|
UINT8 midiCtrlPort; // controls MIDI (SCSP) IRQ behavior
|
|
|
|
// Emulated core Model 3 memory regions
|
|
UINT8 *memoryPool; // single allocated region for all ROM and system RAM
|
|
UINT8 *ram; // 8 MB PowerPC RAM
|
|
UINT8 *crom; // 8+128 MB CROM (fixed CROM first, then 64MB of banked CROMs -- Daytona2 might need extra?)
|
|
UINT8 *vrom; // 64 MB VROM (video ROM, visible only to Real3D)
|
|
UINT8 *soundROM; // 512 KB sound ROM (68K program)
|
|
UINT8 *sampleROM; // 8 MB samples (68K)
|
|
UINT8 *dsbROM; // 128 KB DSB ROM (Z80 program)
|
|
UINT8 *mpegROM; // 8 MB DSB MPEG ROM
|
|
UINT8 *backupRAM; // 128 KB Backup RAM (battery backed)
|
|
UINT8 *securityRAM; // 128 KB Security Board RAM
|
|
UINT8 *driveROM; // 32 KB drive board ROM (Z80 program) (optional)
|
|
|
|
// Banked CROM
|
|
UINT8 *cromBank; // currently mapped in CROM bank
|
|
unsigned cromBankReg; // the CROM bank register
|
|
|
|
// Security device
|
|
unsigned securityPtr; // pointer to current offset in security data
|
|
|
|
// PowerPC
|
|
PPC_FETCH_REGION PPCFetchRegions[3];
|
|
|
|
// Multiple threading
|
|
bool startedThreads; // True if threads have been created and started
|
|
CThread *sndBrdThread; // Sound board thread
|
|
CThread *drvBrdThread; // Drive board thread
|
|
bool sndBrdThreadDone; // Flag to indicate sound board thread has finished processing for current frame
|
|
bool drvBrdThreadDone; // Flag to indicate drive board thread has finished processing for current frame
|
|
|
|
// Thread synchronization objects
|
|
CSemaphore *sndBrdThreadSync;
|
|
CSemaphore *drvBrdThreadSync;
|
|
CMutex *notifyLock;
|
|
CCondVar *notifySync;
|
|
|
|
// Other devices
|
|
CIRQ IRQ; // Model 3 IRQ controller
|
|
CMPC10x PCIBridge; // MPC10x PCI/bridge/memory controller
|
|
CPCIBus PCIBus; // Model 3's PCI bus
|
|
C53C810 SCSI; // NCR 53C810 SCSI controller
|
|
CRTC72421 RTC; // Epson RTC-72421 real-time clock
|
|
C93C46 EEPROM; // 93C46 EEPROM
|
|
CTileGen TileGen; // Sega 2D tile generator
|
|
CReal3D GPU; // Real3D graphics hardware
|
|
CSoundBoard SoundBoard; // Sound board
|
|
CDSB *DSB; // Digital Sound Board (type determined dynamically at load time)
|
|
CDriveBoard DriveBoard; // Drive board
|
|
};
|
|
|
|
|
|
#endif // INCLUDED_MODEL3_H
|