/**
** Supermodel
** A Sega Model 3 Arcade Emulator.
** Copyright 2011-2016 Bart Trzynadlowski, Nik Henson
**
** 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 .
**/
/*
* Model3.cpp
*
* Implementation of the CModel3 class: a complete Model 3 machine.
*
* To-Do List
* ----------
* - Save state format has changed slightly. No longer need dmaUnknownRegister
* in Real3D.cpp and security board-related variable was added to Model 3
* state. PowerPC timing variables have changed. Before 0.3a release,
* important to change format version #.
* - ROM sets should probably be handled with a class that manages ROM
* loading, the game list, as well as ROM patching
* - Wrap up CPU emulation inside a class.
* - Update the to-do list! I forgot lots of other stuff here :)
*
* PowerPC Address Map (may be slightly out of date/incomplete)
* -------------------
* 00000000-007FFFFF RAM
* 84000000-8400003F Real3D Status Registers
* 88000000-88000007 Real3D Command Port
* 8C000000-8C3FFFFF Real3D Culling RAM (Low)
* 8E000000-8E0FFFFF Real3D Culling RAM (High)
* 90000000-9000000B Real3D VROM Texture Port
* 94000000-940FFFFF Real3D Texture FIFO
* 98000000-980FFFFF Real3D Polygon RAM
* C0000000-C00000FF SCSI (Step 1.x)
* C1000000-C10000FF SCSI (Step 1.x) (Lost World expects it here)
* C2000000-C20000FF Real3D DMA (Step 2.x)
* F0040000-F004003F Input (Controls) Registers
* F0080000-F0080007 Sound Board Registers
* F00C0000-F00DFFFF Backup RAM
* F0100000-F010003F System Registers
* F0140000-F014003F Real-Time Clock
* F0180000-F019FFFF Security Board RAM
* F01A0000-F01A003F Security Board Registers
* F0800CF8-F0800CFF MPC105 CONFIG_ADDR (Step 1.x)
* F0C00CF8-F0800CFF MPC105 CONFIG_DATA (Step 1.x)
* F1000000-F10F7FFF Tile Generator Pattern Table
* F10F8000-F10FFFFF Tile Generator Name Table
* F1100000-F111FFFF Tile Generator Palette
* F1180000-F11800FF Tile Generator Registers
* F8FFF000-F8FFF0FF MPC105 (Step 1.x) or MPC106 (Step 2.x) Registers
* F9000000-F90000FF NCR 53C810 Registers (Step 1.x?)
* FEC00000-FEDFFFFF MPC106 CONFIG_ADDR (Step 2.x)
* FEE00000-FEFFFFFF MPC106 CONFIG_DATA (Step 2.x)
* FF000000-FF7FFFFF Banked CROM (CROMxx)
* FF800000-FFFFFFFF Fixed CROM
*
* Endianness
* ----------
* We assume a little endian machine and so for speed, PowerPC RAM and ROM
* regions are byte reversed, which means that aligned words can be read and
* written without any conversion. Problems arise when the PowerPC accesses
* little endian devices, like the tile generator, MPC10x, or Real3D. Then, the
* access must be carried out carefully one byte at a time or by manually byte
* reversing first (because the PowerPC will already have byte reversed it).
*
* System Registers
* ----------------
*
* F0100014: IRQ Enable
* 7 6 5 4 3 2 1 0
* +---+---+---+---+---+---+---+---+
* | ? |SND| ? |NET|VD3|VD2|VBL|VD0|
* +---+---+---+---+---+---+---+---+
* SND SCSP (sound)
* NET Network
* VD3 Unknown video-related
* VD2 Unknown video-related
* VBL VBlank start
* VD0 Unknown video-related (?)
* 0 = Disable, 1 = Enable
*
* Game Buttons
* ------------
*
* For further information, see ReadInputs().
*
* Offset 0x04, bank 0:
*
* 7 6 5 4 3 2 1 0
* +---+---+---+---+---+---+---+---+
* | ? | ? |ST2|ST1|SVA|TSA|CN2|CN1|
* +---+---+---+---+---+---+---+---+
* CNx Coin 1, Coin 2
* TSA Test Button A
* SVA Service Button A
* STx Start 1, Start 2
*
* Offset 0x04, bank 1:
*
* 7 6 5 4 3 2 1 0
* +---+---+---+---+---+---+---+---+
* |TSB|SVB|EEP| ? | ? | ? | ? | ? |
* +---+---+---+---+---+---+---+---+
* EEP Mapped to EEPROM (values written here are ignored)
* SVB Service Button B
* TSB Test Button B
*
* Offset 0x08:
*
* 7 6 5 4 3 2 1 0
* +---+---+---+---+---+---+---+---+
* |G27|G26|G25|G24|G23|G22|G21|G20|
* +---+---+---+---+---+---+---+---+
* G2x Game-specific
*
* Offset 0x0C:
*
* 7 6 5 4 3 2 1 0
* +---+---+---+---+---+---+---+---+
* |G37|G36|G35|G34|G33|G32|G31|G30|
* +---+---+---+---+---+---+---+---+
* G3x Game-specific
*
* Game-specific buttons:
*
* Scud Race:
* G27 ---
* G26 Shift 2 when combined w/ G25, Shift 1 when combined w/ G24
* G25 Shift 4
* G24 Shift 3
* G23 VR4 Green
* G22 VR3 Yellow
* G21 VR2 Blue
* G20 VR1 Red
*
* Virtua Fighter 3, Fighting Vipers 2:
* G27 Right
* G26 Left
* G25 Down
* G24 Up
* G23 Punch
* G22 Kick
* G21 Guard
* G20 Escape (VF3 only)
*
* Sega Rally 2:
* G21 Hand Brake
* G20 View Change
*
* Lost World, LA Machineguns:
* G20 Gun trigger
*
* Star Wars Trilogy:
* G20 Event button
* G25 Trigger
*
* Virtual On 2:
* G27 Left Lever Left
* G26 Left Lever Right
* G25 Left Lever Up
* G24 Left Lever Down
* G23 ---
* G22 ---
* G21 Left Turbo
* G20 Left Shot Trigger
* G37 Right Lever Left
* G36 Right Lever Right
* G35 Right Lever Up
* G34 Right Lever Down
* G33 ---
* G32 ---
* G31 Right Turbo
* G30 Right Shot Trigger
*
* Misc. Notes
* -----------
*
* daytona2:
* - Base address of program in CROM: 0x600000
* - 0x10019E is the location in RAM which contains link type.
* - Region menu can be accessed by entering test mode, holding start, and
* pressing: green, green, blue, yellow, red, yellow, blue
* (VR4,4,2,3,1,3,2).
*/
#include
#include
#include
#include
#include "Supermodel.h"
#include "Game.h"
#include "ROMSet.h"
#include "Util/Format.h"
#include "Util/ByteSwap.h"
#include
#include
#include
/******************************************************************************
Model 3 Inputs
Game controls. The EEPROM is mapped here as well.
******************************************************************************/
UINT8 CModel3::ReadInputs(unsigned reg)
{
UINT8 adc[8];
UINT8 data;
reg &= 0x3F;
switch (reg)
{
case 0x00: // input bank
return inputBank;
case 0x04: // current input bank
data = 0xFF;
if ((inputBank&1) == 0)
{
data &= ~(Inputs->coin[0]->value); // Coin 1
data &= ~(Inputs->coin[1]->value<<1); // Coin 2
data &= ~(Inputs->test[0]->value<<2); // Test A
data &= ~(Inputs->service[0]->value<<3); // Service A
data &= ~(Inputs->start[0]->value<<4); // Start 1
data &= ~(Inputs->start[1]->value<<5); // Start 2
}
else
{
data &= ~(Inputs->service[1]->value<<6); // Service B
data &= ~(Inputs->test[1]->value<<7); // Test B
data = (data&0xDF)|(EEPROM.Read()<<5); // bank 1 contains EEPROM data bit
}
if ((m_game.inputs & Game::INPUT_SKI))
{
if ((inputBank&1) == 0)
{
data &= ~(Inputs->skiPollLeft->value<<5);
data &= ~(Inputs->skiSelect1->value<<6);
data &= ~(Inputs->skiSelect2->value<<7);
data &= ~(Inputs->skiSelect3->value<<4);
}
}
return data;
case 0x08: // game-specific inputs
data = 0xFF;
if ((m_game.inputs & Game::INPUT_SKI))
{
data &= ~(Inputs->skiPollRight->value<<0);
}
if ((m_game.inputs & Game::INPUT_JOYSTICK1))
{
data &= ~(Inputs->up[0]->value<<5); // P1 Up
data &= ~(Inputs->down[0]->value<<4); // P1 Down
data &= ~(Inputs->left[0]->value<<7); // P1 Left
data &= ~(Inputs->right[0]->value<<6); // P1 Right
}
if ((m_game.inputs & Game::INPUT_FIGHTING))
{
data &= ~(Inputs->escape[0]->value<<3); // P1 Escape
data &= ~(Inputs->guard[0]->value<<2); // P1 Guard
data &= ~(Inputs->kick[0]->value<<1); // P1 Kick
data &= ~(Inputs->punch[0]->value<<0); // P1 Punch
}
if ((m_game.inputs & Game::INPUT_SPIKEOUT))
{
data &= ~(Inputs->shift->value<<2); // Shift
data &= ~(Inputs->beat->value<<0); // Beat
data &= ~(Inputs->charge->value<<1); // Charge
data &= ~(Inputs->jump->value<<3); // Jump
}
if ((m_game.inputs & Game::INPUT_SOCCER))
{
data &= ~(Inputs->shortPass[0]->value<<2); // P1 Short Pass
data &= ~(Inputs->longPass[0]->value<<0); // P1 Long Pass
data &= ~(Inputs->shoot[0]->value<<1); // P1 Shoot
}
if ((m_game.inputs & Game::INPUT_VR4))
{
data &= ~(Inputs->vr[0]->value<<0); // VR1 Red
data &= ~(Inputs->vr[1]->value<<1); // VR2 Blue
data &= ~(Inputs->vr[2]->value<<2); // VR3 Yellow
data &= ~(Inputs->vr[3]->value<<3); // VR4 Green
}
if ((m_game.inputs & Game::INPUT_VIEWCHANGE))
{
// Harley is wired slightly differently
if ((m_game.inputs & Game::INPUT_HARLEY))
data &= ~(Inputs->viewChange->value<<1); // View change
else
data &= ~(Inputs->viewChange->value<<0); // View change
}
if ((m_game.inputs & Game::INPUT_SHIFT4))
{
if (Inputs->gearShift4->value == 2) // Shift 2
data &= ~0x60;
else if (Inputs->gearShift4->value == 4) // Shift 4
data &= ~0x20;
if (Inputs->gearShift4->value == 1) // Shift 1
data &= ~0x50;
else if (Inputs->gearShift4->value == 3) // Shift 3
data &= ~0x10;
}
if ((m_game.inputs & Game::INPUT_SHIFTUPDOWN))
{
// Harley is wired slightly differently
if ((m_game.inputs & Game::INPUT_HARLEY))
{
if (Inputs->gearShiftUp->value) // Shift up
data &= ~0x60;
else if (Inputs->gearShiftDown->value) // Shift down
data &= ~0x50;
}
else
{
if (Inputs->gearShiftUp->value) // Shift up
data &= ~0x50;
else if (Inputs->gearShiftDown->value) // Shift down
data &= ~0x60;
}
}
if ((m_game.inputs & Game::INPUT_HANDBRAKE))
data &= ~(Inputs->handBrake->value<<1); // Hand brake
if ((m_game.inputs & Game::INPUT_HARLEY))
data &= ~(Inputs->musicSelect->value<<0); // Music select
if ((m_game.inputs & Game::INPUT_GUN1))
data &= ~(Inputs->trigger[0]->value<<0); // P1 Trigger
if ((m_game.inputs & Game::INPUT_ANALOG_JOYSTICK))
{
data &= ~(Inputs->analogJoyTrigger1->value<<5); // Trigger 1
data &= ~(Inputs->analogJoyTrigger2->value<<4); // Trigger 2
data &= ~(Inputs->analogJoyEvent1->value<<0); // Event Button 1
data &= ~(Inputs->analogJoyEvent2->value<<1); // Event Button 2
}
if ((m_game.inputs & Game::INPUT_TWIN_JOYSTICKS)) // First twin joystick
{
/*
* Process left joystick inputs first
*/
// Shot trigger and Turbo
data &= ~(Inputs->twinJoyShot1->value<<0);
data &= ~(Inputs->twinJoyTurbo1->value<<1);
// Stick
data &= ~(Inputs->twinJoyLeft1->value<<7);
data &= ~(Inputs->twinJoyRight1->value<<6);
data &= ~(Inputs->twinJoyUp1->value<<5);
data &= ~(Inputs->twinJoyDown1->value<<4);
/*
* Next, process twin joystick macro inputs (higher level inputs
* that map to actions on both joysticks simultaneously).
*/
/*
* Forward/reverse/turn are mutually exclusive.
*
* Turn Left: 1D 2U
* Turn Right: 1U 2D
* Forward: 1U 2U
* Reverse: 1D 2D
*/
if (Inputs->twinJoyTurnLeft->value)
data &= ~0x10;
else if (Inputs->twinJoyTurnRight->value)
data &= ~0x20;
else if (Inputs->twinJoyForward->value)
data &= ~0x20;
else if (Inputs->twinJoyReverse->value)
data &= ~0x10;
/*
* Strafe/crouch/jump are mutually exclusive.
*
* Strafe Left: 1L 2L
* Strafe Right: 1R 2R
* Jump: 1L 2R
* Crouch: 1R 2L
*/
if (Inputs->twinJoyStrafeLeft->value)
data &= ~0x80;
else if (Inputs->twinJoyStrafeRight->value)
data &= ~0x40;
else if (Inputs->twinJoyJump->value)
data &= ~0x80;
else if (Inputs->twinJoyCrouch->value)
data &= ~0x40;
}
if ((m_game.inputs & Game::INPUT_ANALOG_GUN1))
{
data &= ~(Inputs->analogTriggerLeft[0]->value<<0);
data &= ~(Inputs->analogTriggerRight[0]->value<<1);
}
if ((m_game.inputs & Game::INPUT_MAGTRUCK))
data &= ~(Inputs->magicalPedal1->value << 0);
if ((m_game.inputs & Game::INPUT_FISHING))
{
data &= ~(Inputs->fishingCast->value << 0);
data &= ~(Inputs->fishingSelect->value << 1);
}
return data;
case 0x0C: // game-specific inputs
data = 0xFF;
if (DriveBoard.IsAttached())
data = DriveBoard.Read();
if ((m_game.inputs & Game::INPUT_JOYSTICK2))
{
data &= ~(Inputs->up[1]->value<<5); // P2 Up
data &= ~(Inputs->down[1]->value<<4); // P2 Down
data &= ~(Inputs->left[1]->value<<7); // P2 Left
data &= ~(Inputs->right[1]->value<<6); // P2 Right
}
if ((m_game.inputs & Game::INPUT_FIGHTING))
{
data &= ~(Inputs->escape[1]->value<<3); // P2 Escape
data &= ~(Inputs->guard[1]->value<<2); // P2 Guard
data &= ~(Inputs->kick[1]->value<<1); // P2 Kick
data &= ~(Inputs->punch[1]->value<<0); // P2 Punch
}
if ((m_game.inputs & Game::INPUT_SOCCER))
{
data &= ~(Inputs->shortPass[1]->value<<2); // P2 Short Pass
data &= ~(Inputs->longPass[1]->value<<0); // P2 Long Pass
data &= ~(Inputs->shoot[1]->value<<1); // P2 Shoot
}
if ((m_game.inputs & Game::INPUT_TWIN_JOYSTICKS)) // Second twin joystick (see register 0x08 for comments)
{
data &= ~(Inputs->twinJoyShot2->value<<0);
data &= ~(Inputs->twinJoyTurbo2->value<<1);
data &= ~(Inputs->twinJoyLeft2->value<<7);
data &= ~(Inputs->twinJoyRight2->value<<6);
data &= ~(Inputs->twinJoyUp2->value<<5);
data &= ~(Inputs->twinJoyDown2->value<<4);
if (Inputs->twinJoyTurnLeft->value)
data &= ~0x20;
else if (Inputs->twinJoyTurnRight->value)
data &= ~0x10;
else if (Inputs->twinJoyForward->value)
data &= ~0x20;
else if (Inputs->twinJoyReverse->value)
data &= ~0x10;
if (Inputs->twinJoyStrafeLeft->value)
data &= ~0x80;
else if (Inputs->twinJoyStrafeRight->value)
data &= ~0x40;
else if (Inputs->twinJoyJump->value)
data &= ~0x40;
else if (Inputs->twinJoyCrouch->value)
data &= ~0x80;
}
if ((m_game.inputs & Game::INPUT_GUN2))
data &= ~(Inputs->trigger[1]->value<<0); // P2 Trigger
if ((m_game.inputs & Game::INPUT_ANALOG_GUN2))
{
data &= ~(Inputs->analogTriggerLeft[1]->value<<0);
data &= ~(Inputs->analogTriggerRight[1]->value<<1);
}
if ((m_game.inputs & Game::INPUT_MAGTRUCK))
data &= ~(Inputs->magicalPedal2->value << 0);
return data;
case 0x2C: // Serial FIFO 1
return serialFIFO1;
case 0x30: // Serial FIFO 2
return serialFIFO2;
case 0x34: // Serial FIFO full/empty flags
return 0x0C;
case 0x3C: // ADC
// Load ADC channels with input data
memset(adc, 0, sizeof(adc));
if ((m_game.inputs & Game::INPUT_VEHICLE))
{
adc[0] = (UINT8)Inputs->steering->value;
adc[1] = (UINT8)Inputs->accelerator->value;
adc[2] = (UINT8)Inputs->brake->value;
if ((m_game.inputs & Game::INPUT_HARLEY))
adc[3] = (UINT8)Inputs->rearBrake->value;
}
if ((m_game.inputs & Game::INPUT_ANALOG_JOYSTICK))
{
adc[0] = (UINT8)Inputs->analogJoyY->value;
adc[1] = (UINT8)Inputs->analogJoyX->value;
}
if ((m_game.inputs & Game::INPUT_ANALOG_GUN1)||(m_game.inputs & Game::INPUT_ANALOG_GUN2))
{
adc[0] = (UINT8)Inputs->analogGunX[0]->value;
adc[2] = (UINT8)Inputs->analogGunY[0]->value;
adc[1] = (UINT8)Inputs->analogGunX[1]->value;
adc[3] = (UINT8)Inputs->analogGunY[1]->value;
}
if ((m_game.inputs & Game::INPUT_SKI))
{
adc[0] = (UINT8)Inputs->skiY->value;
adc[1] = (UINT8)Inputs->skiX->value;
}
if ((m_game.inputs & Game::INPUT_MAGTRUCK))
{
adc[0] = uint8_t(Inputs->magicalLever1->value);
adc[1] = uint8_t(Inputs->magicalLever2->value);
}
if ((m_game.inputs & Game::INPUT_FISHING))
{
adc[0] = uint8_t(Inputs->fishingRodY->value);
adc[1] = uint8_t(Inputs->fishingRodX->value);
adc[3] = uint8_t(Inputs->fishingReel->value);
adc[5] = uint8_t(Inputs->fishingStickX->value);
adc[4] = uint8_t(Inputs->fishingStickY->value);
}
// Read out appropriate channel
data = adc[adcChannel&7];
++adcChannel;
return data;
default:
break;
}
return 0xFF; // controls are active low
}
void CModel3::WriteInputs(unsigned reg, UINT8 data)
{
switch (reg&0x3F)
{
case 0:
EEPROM.Write((data>>6)&1,(data>>7)&1,(data>>5)&1);
inputBank = data;
break;
case 0x10: // Drive board
if (DriveBoard.IsAttached())
DriveBoard.Write(data);
if (NULL != Outputs) // TODO - check gameInputs
Outputs->SetValue(OutputRawDrive, data);
break;
case 0x14: // Lamp outputs (Daytona/Scud Race/Sega Rally/Le Mans 24)
if (NULL != Outputs) // TODO - check gameInputs
{
Outputs->SetValue(OutputLampStart, !!(data&0x04));
Outputs->SetValue(OutputLampView1, !!(data&0x08));
Outputs->SetValue(OutputLampView2, !!(data&0x10));
Outputs->SetValue(OutputLampView3, !!(data&0x20));
Outputs->SetValue(OutputLampView4, !!(data&0x40));
Outputs->SetValue(OutputLampLeader, !!(data&0x80));
Outputs->SetValue(OutputRawLamps, data);
}
break;
case 0x24: // Serial FIFO 1
switch (data) // Command
{
case 0x00: // Light gun register select
gunReg = serialFIFO2;
break;
case 0x87: // Read light gun register
serialFIFO1 = 0; // clear serial FIFO 1
serialFIFO2 = 0;
if ((m_game.inputs & Game::INPUT_GUN1||m_game.inputs & Game::INPUT_GUN2))
{
switch (gunReg)
{
case 0: // Player 1 gun Y (low 8 bits)
serialFIFO2 = Inputs->gunY[0]->value&0xFF;
break;
case 1: // Player 1 gun Y (high 2 bits)
serialFIFO2 = (Inputs->gunY[0]->value>>8)&3;
break;
case 2: // Player 1 gun X (low 8 bits)
serialFIFO2 = Inputs->gunX[0]->value&0xFF;
break;
case 3: // Player 1 gun X (high 2 bits)
serialFIFO2 = (Inputs->gunX[0]->value>>8)&3;
break;
case 4: // Player 2 gun Y (low 8 bits)
serialFIFO2 = Inputs->gunY[1]->value&0xFF;
break;
case 5: // Player 2 gun Y (high 2 bits)
serialFIFO2 = (Inputs->gunY[1]->value>>8)&3;
break;
case 6: // Player 2 gun X (low 8 bits)
serialFIFO2 = Inputs->gunX[1]->value&0xFF;
break;
case 7: // Player 2 gun X (high 2 bits)
serialFIFO2 = (Inputs->gunX[1]->value>>8)&3;
break;
case 8: // Off-screen indicator (bit 0 = player 1, bit 1 = player 2, set indicates off screen)
serialFIFO2 = (Inputs->trigger[1]->offscreenValue<<1)|Inputs->trigger[0]->offscreenValue;
break;
default:
DebugLog("Unknown gun register: %X\n", gunReg);
break;
}
}
break;
default:
DebugLog("Uknown command to serial FIFO: %02X\n", data);
break;
}
break;
case 0x28: // Serial FIFO 2
serialFIFO2 = data;
break;
case 0x3C:
adcChannel = data&7;
break;
default:
break;
}
//printf("Controls: %X=%02X\n", reg, data);
}
/******************************************************************************
Model 3 Security Device
The security device is present in some games. Virtual On and Dirt Devils read
tile pattern data from it. Spikeout calls a routine at PC=0x6FAC8 that writes/
reads the security device and, if the return value in R3 is 0, prints "ILLEGAL
ROM" and locks the game. Our habit of returning all 1's for unknown reads
seems to help avoid this.
******************************************************************************/
uint16_t CModel3::ReadSecurityRAM(uint32_t addr)
{
if (addr < 0x8000)
return (*(uint32_t *) &securityRAM[addr * 4]) >> 16;
return 0;
}
UINT32 CModel3::ReadSecurity(unsigned reg)
{
switch (reg)
{
case 0x00: // Status
return 0;
case 0x1C: // Data
if (m_securityFirstRead)
{
m_securityFirstRead = false;
return 0xFFFF0000;
}
else
{
uint8_t *base_ptr;
return m_cryptoDevice.Decrypt(&base_ptr) << 16;
}
default:
DebugLog("Security read: reg=%X\n", reg);
break;
}
return 0xFFFFFFFF;
}
void CModel3::WriteSecurity(unsigned reg, UINT32 data)
{
switch (reg)
{
case 0x10:
case 0x14:
m_cryptoDevice.SetAddressLow(0);
m_cryptoDevice.SetAddressHigh(0);
m_securityFirstRead = true;
break;
case 0x18:
{
uint16_t subKey = data >> 16;
subKey = ((subKey & 0xFF00) >> 8) | ((subKey & 0x00FF) << 8);
m_cryptoDevice.SetSubKey(subKey);
break;
}
default:
DebugLog("Security write: reg=%X, data=%08X (PC=%08X, LR=%08X)\n", reg, data, ppc_get_pc(), ppc_get_lr());
break;
}
}
/******************************************************************************
PCI Devices
Unknown PCI devices are handled here.
******************************************************************************/
UINT32 CModel3::ReadPCIConfigSpace(unsigned device, unsigned reg, unsigned bits, unsigned offset)
{
if ((bits==8) || (bits==16))
{
DebugLog("Model 3: %d-bit PCI read request for reg=%02X\n", bits, reg);
return 0;
}
switch (device)
{
case 16: // Used by Daytona 2
switch (reg)
{
case 0: // PCI vendor and device ID
return 0x182711DB;
default:
break;
}
default:
break;
}
DebugLog("Model 3: PCI %d-bit write request for device=%d, reg=%02X\n", bits, device, reg);
return 0;
}
void CModel3::WritePCIConfigSpace(unsigned device, unsigned reg, unsigned bits, unsigned offset, UINT32 data)
{
DebugLog("Model 3: PCI %d-bit write request for device=%d, reg=%02X, data=%08X\n", bits, device, reg, data);
}
/******************************************************************************
Model 3 System Registers
NOTE: Proper IRQ handling requires a "deassert" function in the PowerPC core,
which the interpreter presently lacks. This is because different modules that
generate IRQs, like the tilegen, Real3D, and SCSP, should each call
IRQ.Assert() on their own, which will assert the CPU IRQ line. Right now,
the CPU processes an interrupt and clears the line by itself, which means that
if multiple interrupts are asserted simultaneously, depending on the IRQ
handler code, only one may be processed. Keep an eye on this!
******************************************************************************/
// Set the CROM bank index (active low logic)
void CModel3::SetCROMBank(unsigned idx)
{
cromBankReg = idx;
idx = (~idx) & 0xF;
cromBank = &crom[0x800000 + (idx*0x800000)];
DebugLog("CROM bank setting: %d (%02X), PC=%08X, LR=%08X\n", idx, cromBankReg, ppc_get_pc(), ppc_get_lr());
}
UINT8 CModel3::ReadSystemRegister(unsigned reg)
{
switch (reg&0x3F)
{
case 0x08: // CROM bank
return cromBankReg;
case 0x14: // IRQ enable
return IRQ.ReadIRQEnable();
case 0x18: // IRQ pending
return IRQ.ReadIRQState();
case 0x1C: // unknown (apparently expects some or all bits set)
//DebugLog("System register %02X read\n", reg);
return 0xFF;
case 0x10: // JTAG Test Access Port
return (GPU.ReadTAP()<< 5);
default:
//DebugLog("System register %02X read\n", reg);
break;
}
return 0xFF;
}
void CModel3::WriteSystemRegister(unsigned reg, UINT8 data)
{
switch (reg&0x3F)
{
case 0x08: // CROM bank
SetCROMBank(data);
break;
case 0x14: // IRQ enable
IRQ.WriteIRQEnable(data);
DebugLog("IRQ ENABLE=%02X\n", data);
break;
case 0x18: // IRQ acknowledge
{
// MAME: Clear bits are ack. Reverse order from other IRQ regs.
//uint8_t ack = 0;
//for (int bit = 0; bit < 8; bit++)
//{
// if (!(data & (1 << bit)))
// ack |= (1 << (7-bit));
//}
//IRQ.Deassert(ack);
DebugLog("IRQ ACK? %02X=%02X\n", reg, data);
break;
}
case 0x0C: // JTAG Test Access Port
GPU.WriteTAP((data>>6)&1,(data>>2)&1,(data>>5)&1,(data>>7)&1); // TCK, TMS, TDI, TRST
break;
case 0x0D:
case 0x0E:
case 0x0F:
case 0x1C: // LED control?
break;
default:
//DebugLog("System register %02X=%02X\n", reg, data);
break;
}
}
/******************************************************************************
Address Space Access Handlers
NOTE: Testing of some of the address ranges is not strict enough, especially
for the MPC10x. Write32() handles the MPC10x most correctly.
******************************************************************************/
/*
* CModel3::Read8(addr):
* CModel3::Read16(addr):
* CModel3::Read32(addr):
* CModel3::Read64(addr):
*
* Read handlers.
*/
UINT8 CModel3::Read8(UINT32 addr)
{
// RAM (most frequently accessed)
if (addr<0x00800000)
return ram[addr^3];
// Other
switch ((addr>>24))
{
// CROM
case 0xFF:
if (addr < 0xFF800000)
return cromBank[(addr&0x7FFFFF)^3];
else
return crom[(addr&0x7FFFFF)^3];
// Real3D DMA
case 0xC2:
return GPU.ReadDMARegister8(addr&0xFF);
// Various
case 0xF0:
case 0xFE: // mirror
switch ((addr>>16)&0xFF)
{
// Inputs
case 0x04:
return ReadInputs(addr&0x3F);
// Sound Board
case 0x08:
if ((addr & 0xF) == 4) // MIDI control port
return 0x83; // magtruck country check
else
return 0;
break;
// System registers
case 0x10:
return ReadSystemRegister(addr&0x3F);
// RTC
case 0x14:
if ((addr&3)==1) // battery voltage test
return 0x03;
else if ((addr&3)==0)
return RTC.ReadRegister((addr>>2)&0xF);
return 0;
// Unknown
default:
break;
}
break;
// Tile generator
case 0xF1:
if (addr < 0xF1120000)
{
// Tile generator accesses its RAM as little endian, no adjustment needed here
return TileGen.ReadRAM8(addr&0x1FFFFF);
}
break;
// 53C810 SCSI
case 0xC0: // only on Step 1.0
if (m_game.stepping != "1.0")
break;
case 0xF9:
case 0xC1:
return SCSI.ReadRegister(addr&0xFF);
// Unknown
default:
break;
}
DebugLog("PC=%08X\tread8 : %08X\n", ppc_get_pc(), addr);
return 0xFF;
}
UINT16 CModel3::Read16(UINT32 addr)
{
UINT16 data;
if ((addr&1))
{
data = Read8(addr+0)<<8;
data |= Read8(addr+1);
return data;
}
// RAM (most frequently accessed)
if (addr<0x00800000)
return *(UINT16 *) &ram[addr^2];
// Other
switch ((addr>>24))
{
// CROM
case 0xFF:
if (addr < 0xFF800000)
return *(UINT16 *) &cromBank[(addr&0x7FFFFF)^2];
else
return *(UINT16 *) &crom[(addr&0x7FFFFF)^2];
// Various
case 0xF0:
case 0xFE: // mirror
switch ((addr>>16)&0xFF)
{
// Backup RAM
case 0x0C:
case 0x0D:
return *(UINT16 *) &backupRAM[(addr&0x1FFFF)^2];
// Sound Board
case 0x08:
//printf("PPC: Read16 %08X\n", addr);
break;
// MPC105
case 0xC0: // F0C00CF8
return PCIBridge.ReadPCIConfigData(16,addr&3);
// MPC106
case 0xE0:
case 0xE1:
case 0xE2:
case 0xE3:
case 0xE4:
case 0xE5:
case 0xE6:
case 0xE7:
case 0xE8:
case 0xE9:
case 0xEA:
case 0xEB:
case 0xEC:
case 0xED:
case 0xEE:
case 0xEF:
return PCIBridge.ReadPCIConfigData(16,addr&3);
// Unknown
default:
break;
}
break;
// Tile generator
case 0xF1:
if (addr < 0xF1120000)
{
// Tile generator accesses its RAM as little endian, no adjustment needed here
uint16_t data = TileGen.ReadRAM16(addr&0x1FFFFF);
return FLIPENDIAN16(data);
}
break;
// Unknown
default:
break;
}
DebugLog("PC=%08X\tread16: %08X\n", ppc_get_pc(), addr);
return 0xFFFF;
}
UINT32 CModel3::Read32(UINT32 addr)
{
UINT32 data;
if ((addr&3))
{
data = Read16(addr+0)<<16;
data |= Read16(addr+2);
return data;
}
// RAM (most frequently accessed)
if (addr < 0x00800000)
return *(UINT32 *) &ram[addr];
// Other
switch ((addr>>24))
{
// CROM
case 0xFF:
if (addr < 0xFF800000)
return *(UINT32 *) &cromBank[(addr&0x7FFFFF)];
else
return *(UINT32 *) &crom[(addr&0x7FFFFF)];
// Real3D registers
case 0x84:
return GPU.ReadRegister(addr&0x3F);
// Real3D DMA
case 0xC2:
data = GPU.ReadDMARegister32(addr&0xFF);
return FLIPENDIAN32(data);
// Various
case 0xF0:
case 0xFE: // mirror
switch ((addr>>16)&0xFF)
{
// Inputs
case 0x04:
data = ReadInputs((addr&0x3F)+0) << 24;
data |= ReadInputs((addr&0x3F)+1) << 16;
data |= ReadInputs((addr&0x3F)+2) << 8;
data |= ReadInputs((addr&0x3F)+3) << 0;
return data;
// Sound Board
case 0x08:
//printf("PPC: Read32 %08X\n", addr);
break;
// Backup RAM
case 0x0C:
case 0x0D:
return *(UINT32 *) &backupRAM[(addr&0x1FFFF)];
// System registers
case 0x10:
data = ReadSystemRegister((addr&0x3F)+0) << 24;
data |= ReadSystemRegister((addr&0x3F)+1) << 16;
data |= ReadSystemRegister((addr&0x3F)+2) << 8;
data |= ReadSystemRegister((addr&0x3F)+3) << 0;
return data;
// MPC105
case 0xC0: // F0C00CF8
return PCIBridge.ReadPCIConfigData(32,0);
// MPC106
case 0xE0:
case 0xE1:
case 0xE2:
case 0xE3:
case 0xE4:
case 0xE5:
case 0xE6:
case 0xE7:
case 0xE8:
case 0xE9:
case 0xEA:
case 0xEB:
case 0xEC:
case 0xED:
case 0xEE:
case 0xEF:
return PCIBridge.ReadPCIConfigData(32,0);
// RTC
case 0x14:
data = (RTC.ReadRegister((addr>>2)&0xF) << 24);
data |= 0x00030000; // set these bits to pass battery voltage test
return data;
// Security board RAM
case 0x18:
case 0x19:
return *(UINT32 *) &securityRAM[(addr&0x1FFFF)]; // so far, only 32-bit access observed, so we use little endian access
// Security board registers
case 0x1A:
return ReadSecurity(addr&0x3F);
// Unknown
default:
break;
}
break;
// Tile generator
case 0xF1:
// Tile generator accesses its RAM as little endian, must flip for big endian PowerPC
if (addr < 0xF1120000)
{
data = TileGen.ReadRAM32(addr&0x1FFFFF);
return FLIPENDIAN32(data);
}
else if ((addr>=0xF1180000) && (addr<0xF1180100))
{
data = TileGen.ReadRegister(addr & 0xFF);
return FLIPENDIAN32(data);
}
break;
// 53C810 SCSI
case 0xC0: // only on Step 1.0
if (m_game.stepping != "1.0") // check for Step 1.0
break;
case 0xF9:
case 0xC1:
data = (SCSI.ReadRegister((addr+0)&0xFF) << 24);
data |= (SCSI.ReadRegister((addr+1)&0xFF) << 16);
data |= (SCSI.ReadRegister((addr+2)&0xFF) << 8);
data |= (SCSI.ReadRegister((addr+3)&0xFF) << 0);
return data;
// Unknown
default:
break;
}
DebugLog("PC=%08X\tread32: %08X\n", ppc_get_pc(), addr);
return 0xFFFFFFFF;
}
UINT64 CModel3::Read64(UINT32 addr)
{
UINT64 data;
data = Read32(addr+0);
data <<= 32;
data |= Read32(addr+4);
return data;
}
/*
* CModel3::Write8(addr, data):
* CModel3::Write16(addr, data):
* CModel3::Write32(addr, data):
* CModel3::Write64(addr, data):
*
* Write handlers.
*/
void CModel3::Write8(UINT32 addr, UINT8 data)
{
// RAM (most frequently accessed)
if (addr < 0x00800000)
{
ram[addr^3] = data;
return;
}
// Other
switch ((addr>>24))
{
// Real3D DMA
case 0xC2:
GPU.WriteDMARegister8(addr&0xFF,data);
break;
// Various
case 0xF0:
case 0xFE: // mirror
switch ((addr>>16)&0xFF)
{
// Inputs
case 0x04:
WriteInputs(addr&0x3F,data);
break;
// Sound Board
case 0x08:
//printf("PPC: %08X=%02X * (PC=%08X, LR=%08X)\n", addr, data, ppc_get_pc(), ppc_get_lr());
if ((addr&0xF) == 0) // MIDI data port
SoundBoard.WriteMIDIPort(data);
else if ((addr&0xF) == 4) // MIDI control port
midiCtrlPort = data;
break;
// Backup RAM
case 0x0C:
case 0x0D:
backupRAM[(addr&0x1FFFF)^3] = data;
break;
// System registers
case 0x10:
WriteSystemRegister(addr&0x3F,data);
break;
// RTC
case 0x14:
if ((addr&3)==0)
RTC.WriteRegister((addr>>2)&0xF,data);
break;
// Unknown
default:
break;
}
DebugLog("PC=%08X\twrite8 : %08X=%02X\n", ppc_get_pc(), addr, data);
break;
// Tile generator
case 0xF1:
if (addr < 0xF1120000)
{
// Tile generator accesses its RAM as little endian, no adjustment needed here
TileGen.WriteRAM8(addr&0x1FFFFF, data);
break;
}
goto Unknown8;
// MPC105/106
case 0xF8:
PCIBridge.WriteRegister(addr&0xFF,data);
break;
// 53C810 SCSI
case 0xC0: // only on Step 1.0
if (m_game.stepping != "1.0")
goto Unknown8;
case 0xF9:
case 0xC1:
SCSI.WriteRegister(addr&0xFF,data);
break;
// Unknown:
default:
Unknown8:
DebugLog("PC=%08X\twrite8 : %08X=%02X\n", ppc_get_pc(), addr, data);
break;
}
}
void CModel3::Write16(UINT32 addr, UINT16 data)
{
if ((addr&1))
{
Write8(addr+0,data>>8);
Write8(addr+1,data&0xFF);
return;
}
// RAM (most frequently accessed)
if (addr < 0x00800000)
{
*(UINT16 *) &ram[addr^2] = data;
return;
}
// Other
switch ((addr>>24))
{
// Various
case 0xF0:
case 0xFE: // mirror
switch ((addr>>16)&0xFF)
{
// Sound Board
case 0x08:
//printf("%08X=%04X\n", addr, data);
break;
// Backup RAM
case 0x0C:
case 0x0D:
*(UINT16 *) &backupRAM[(addr&0x1FFFF)^2] = data;
break;
// MPC105
case 0xC0: // F0C00CF8
PCIBridge.WritePCIConfigData(16,addr&2,data);
break;
// Unknown
default:
break;
}
DebugLog("PC=%08X\twrite16 : %08X=%04X\n", ppc_get_pc(), addr, data);
break;
// Tile generator
case 0xF1:
if (addr < 0xF1120000)
{
// Tile generator accesses its RAM as little endian, no adjustment needed here
TileGen.WriteRAM16(addr&0x1FFFFF, FLIPENDIAN16(data));
}
goto Unknown16;
// MPC105/106
case 0xF8:
// Write in big endian order, like a real PowerPC
PCIBridge.WriteRegister((addr&0xFF)+0,data>>8);
PCIBridge.WriteRegister((addr&0xFF)+1,data&0xFF);
break;
// Unknown
default:
Unknown16:
DebugLog("PC=%08X\twrite16: %08X=%04X\n", ppc_get_pc(), addr, data);
break;
}
}
void CModel3::Write32(UINT32 addr, UINT32 data)
{
if ((addr&3))
{
Write16(addr+0,data>>16);
Write16(addr+2,data);
return;
}
// RAM (most frequently accessed)
if (addr<0x00800000)
{
*(UINT32 *) &ram[addr] = data;
return;
}
// Other
switch ((addr>>24))
{
// Real3D trigger
case 0x88: // 88000000
GPU.Flush();
break;
// Real3D low culling RAM
case 0x8C: // 8C000000-8C400000
GPU.WriteLowCullingRAM(addr&0x3FFFFF,FLIPENDIAN32(data));
break;
// Real3D high culling RAM
case 0x8E: // 8E000000-8E100000
GPU.WriteHighCullingRAM(addr&0xFFFFF,FLIPENDIAN32(data));
break;
// Real3D texture port
case 0x90: // 90000000-90??????
GPU.WriteTexturePort(addr&0xFF,FLIPENDIAN32(data));
break;
// Real3D texture FIFO
case 0x94: // 94000000-94100000
GPU.WriteTextureFIFO(FLIPENDIAN32(data));
break;
// Real3D polygon RAM
case 0x98: // 98000000-98400000
GPU.WritePolygonRAM(addr&0x3FFFFF,FLIPENDIAN32(data));
break;
// Real3D configuration registers
case 0x9C: // 9Cxxxxxx
//printf("%08X=%08X\n", addr, data); //TODO: flip endian?
break;
// Real3D DMA
case 0xC2: // C2000000-C2000100
GPU.WriteDMARegister32(addr&0xFF,FLIPENDIAN32(data));
break;
// Various
case 0xF0:
case 0xFE: // mirror
switch ((addr>>16)&0xFF)
{
// Inputs
case 0x04:
WriteInputs((addr&0x3F)+0,(data>>24)&0xFF);
WriteInputs((addr&0x3F)+1,(data>>16)&0xFF);
WriteInputs((addr&0x3F)+2,(data>>8)&0xFF);
WriteInputs((addr&0x3F)+3,(data>>0)&0xFF);
break;
// Sound Board
case 0x08:
//printf("PPC: %08X=%08X\n", addr, data);
break;
// Backup RAM
case 0x0C:
case 0x0D:
*(UINT32 *) &backupRAM[(addr&0x1FFFF)] = data;
break;
// MPC105
case 0x80: // F0800CF8 (never observed at 0xFExxxxxx)
PCIBridge.WritePCIConfigAddress(data);
break;
// MPC105/106
case 0xC0: case 0xD0: case 0xE0:
case 0xC1: case 0xD1: case 0xE1:
case 0xC2: case 0xD2: case 0xE2:
case 0xC3: case 0xD3: case 0xE3:
case 0xC4: case 0xD4: case 0xE4:
case 0xC5: case 0xD5: case 0xE5:
case 0xC6: case 0xD6: case 0xE6:
case 0xC7: case 0xD7: case 0xE7:
case 0xC8: case 0xD8: case 0xE8:
case 0xC9: case 0xD9: case 0xE9:
case 0xCA: case 0xDA: case 0xEA:
case 0xCB: case 0xDB: case 0xEB:
case 0xCC: case 0xDC: case 0xEC:
case 0xCD: case 0xDD: case 0xED:
case 0xCE: case 0xDE: case 0xEE:
case 0xCF: case 0xDF: case 0xEF:
if ((addr>=0xF0C00CF8) && (addr<0xF0C00D00)) // MPC105
PCIBridge.WritePCIConfigData(32,0,data);
else if ((addr>=0xFEC00000) && (addr<0xFEE00000)) // MPC106
PCIBridge.WritePCIConfigAddress(data);
else if ((addr>=0xFEE00000) && (addr<0xFEF00000)) // MPC106
PCIBridge.WritePCIConfigData(32,0,data);
break;
// System registers
case 0x10:
WriteSystemRegister((addr&0x3F)+0,(data>>24)&0xFF);
WriteSystemRegister((addr&0x3F)+1,(data>>16)&0xFF);
WriteSystemRegister((addr&0x3F)+2,(data>>8)&0xFF);
WriteSystemRegister((addr&0x3F)+3,(data>>0)&0xFF);
break;
// RTC
case 0x14:
RTC.WriteRegister((addr>>2)&0xF,data);
break;
// Security board RAM
case 0x18:
case 0x19:
*(UINT32 *) &securityRAM[(addr&0x1FFFF)] = data;
break;
// Security board registers
case 0x1A:
WriteSecurity(addr&0x3F,data);
break;
// Unknown
default:
break;
}
DebugLog("PC=%08X\twrite32: %08X=%08X\n", ppc_get_pc(), addr, data);
break;
// Tile generator
case 0xF1:
if (addr < 0xF1120000)
{
// Tile generator accesses its RAM as little endian, must flip for big endian PowerPC
data = FLIPENDIAN32(data);
TileGen.WriteRAM32(addr&0x1FFFFF,data);
break;
}
else if ((addr>=0xF1180000) && (addr<0xF1180100))
{
TileGen.WriteRegister(addr&0xFF,FLIPENDIAN32(data));
break;
}
goto Unknown32;
// MPC105/106
case 0xF8: // F8FFF000-F8FFF100
// Write in big endian order, like a real PowerPC
PCIBridge.WriteRegister((addr&0xFF)+0,(data>>24)&0xFF);
PCIBridge.WriteRegister((addr&0xFF)+1,(data>>16)&0xFF);
PCIBridge.WriteRegister((addr&0xFF)+2,(data>>8)&0xFF);
PCIBridge.WriteRegister((addr&0xFF)+3,data&0xFF);
break;
// 53C810 SCSI
case 0xC0: // step 1.0 only
if (m_game.stepping != "1.0")
goto Unknown32;
case 0xF9:
case 0xC1:
SCSI.WriteRegister((addr&0xFF)+0,(data>>24)&0xFF);
SCSI.WriteRegister((addr&0xFF)+1,(data>>16)&0xFF);
SCSI.WriteRegister((addr&0xFF)+2,(data>>8)&0xFF);
SCSI.WriteRegister((addr&0xFF)+3,data&0xFF);
break;
// Unknown
default:
Unknown32:
//printf("PC=%08X\twrite32: %08X=%08X\n", ppc_get_pc(), addr, data);
DebugLog("PC=%08X\twrite32: %08X=%08X\n", ppc_get_pc(), addr, data);
break;
}
}
void CModel3::Write64(UINT32 addr, UINT64 data)
{
Write32(addr+0, (UINT32) (data>>32));
Write32(addr+4, (UINT32) data);
}
/******************************************************************************
Emulation and Interface Functions
******************************************************************************/
void CModel3::SaveState(CBlockFile *SaveState)
{
// Write Model 3 state
SaveState->NewBlock("Model 3", __FILE__);
SaveState->Write(&inputBank, sizeof(inputBank));
SaveState->Write(&serialFIFO1, sizeof(serialFIFO1));
SaveState->Write(&serialFIFO2, sizeof(serialFIFO2));
SaveState->Write(&gunReg, sizeof(gunReg));
SaveState->Write(&adcChannel, sizeof(adcChannel));
SaveState->Write(&cromBankReg, sizeof(cromBankReg));
SaveState->Write(&securityPtr, sizeof(securityPtr));
SaveState->Write(ram, 0x800000);
SaveState->Write(backupRAM, 0x20000);
SaveState->Write(securityRAM, 0x20000);
SaveState->Write(&midiCtrlPort, sizeof(midiCtrlPort));
int32_t securityFirstRead = m_securityFirstRead;
SaveState->Write(&securityFirstRead, sizeof(securityFirstRead));
// All devices...
ppc_save_state(SaveState);
IRQ.SaveState(SaveState);
PCIBridge.SaveState(SaveState);
SCSI.SaveState(SaveState);
EEPROM.SaveState(SaveState);
TileGen.SaveState(SaveState);
GPU.SaveState(SaveState);
SoundBoard.SaveState(SaveState); // also saves DSB state
DriveBoard.SaveState(SaveState);
m_cryptoDevice.SaveState(SaveState);
}
void CModel3::LoadState(CBlockFile *SaveState)
{
// Load Model 3 state
if (OKAY != SaveState->FindBlock("Model 3"))
{
ErrorLog("Unable to load Model 3 core state. Save state file is corrupt.");
return;
}
SaveState->Read(&inputBank, sizeof(inputBank));
SaveState->Read(&serialFIFO1, sizeof(serialFIFO1));
SaveState->Read(&serialFIFO2, sizeof(serialFIFO2));
SaveState->Read(&gunReg, sizeof(gunReg));
SaveState->Read(&adcChannel, sizeof(adcChannel));
SaveState->Read(&cromBankReg, sizeof(cromBankReg));
SetCROMBank(cromBankReg); // update CROM bank
SaveState->Read(&securityPtr, sizeof(securityPtr));
SaveState->Read(ram, 0x800000);
SaveState->Read(backupRAM, 0x20000);
SaveState->Read(securityRAM, 0x20000);
SaveState->Read(&midiCtrlPort, sizeof(midiCtrlPort));
int32_t securityFirstRead;
SaveState->Write(&securityFirstRead, sizeof(securityFirstRead));
m_securityFirstRead = securityFirstRead != 0;
// All devices...
GPU.LoadState(SaveState);
TileGen.LoadState(SaveState);
EEPROM.LoadState(SaveState);
SCSI.LoadState(SaveState);
PCIBridge.LoadState(SaveState);
IRQ.LoadState(SaveState);
ppc_load_state(SaveState);
SoundBoard.LoadState(SaveState);
DriveBoard.LoadState(SaveState);
m_cryptoDevice.LoadState(SaveState);
}
void CModel3::SaveNVRAM(CBlockFile *NVRAM)
{
// Load EEPROM
EEPROM.SaveState(NVRAM);
// Save backup RAM
NVRAM->NewBlock("Backup RAM", __FILE__);
NVRAM->Write(backupRAM, 0x20000);
}
void CModel3::LoadNVRAM(CBlockFile *NVRAM)
{
// Load EEPROM
EEPROM.LoadState(NVRAM);
// Load backup RAM
if (OKAY != NVRAM->FindBlock("Backup RAM"))
{
ErrorLog("Unable to load Model 3 backup RAM. NVRAM file is corrupt.");
return;
}
NVRAM->Read(backupRAM, 0x20000);
}
void CModel3::ClearNVRAM(void)
{
memset(backupRAM, 0, 0x20000);
EEPROM.Clear();
}
void CModel3::RunFrame(void)
{
UINT32 start = CThread::GetTicks();
// See if currently running multi-threaded
if (m_multiThreaded)
{
// If so, check all threads are up and running
if (!StartThreads())
goto ThreadError;
// Wake threads for PPC main board (if multi-threading GPU), sound board (if sync'd) and drive board (if attached) so they can process a frame
if ((m_gpuMultiThreaded && !ppcBrdThreadSync->Post()) ||
(syncSndBrdThread && !sndBrdThreadSync->Post()) ||
(DriveBoard.IsAttached() && !drvBrdThreadSync->Post()))
goto ThreadError;
// If not multi-threading GPU, then run PPC main board for a frame and sync GPUs now in this thread
if (!m_gpuMultiThreaded)
{
RunMainBoardFrame();
SyncGPUs();
}
// Render frame
RenderFrame();
// Enter notify wait critical section
if (!notifyLock->Lock())
goto ThreadError;
// Wait for PPC main board, sound board and drive board threads to finish their work (if they are running and haven't finished already)
while ((m_gpuMultiThreaded && !ppcBrdThreadDone) ||
(syncSndBrdThread && !sndBrdThreadDone) ||
(DriveBoard.IsAttached() && !drvBrdThreadDone))
{
if (!notifySync->Wait(notifyLock))
goto ThreadError;
}
ppcBrdThreadDone = false;
sndBrdThreadDone = false;
drvBrdThreadDone = false;
// Leave notify wait critical section
if (!notifyLock->Unlock())
goto ThreadError;
// If multi-threading GPU, then sync GPUs last while PPC main board thread is waiting
if (m_gpuMultiThreaded)
SyncGPUs();
}
else
{
// If not multi-threaded, then just process and render a single frame for PPC main board, sound board and drive board in turn in this thread
RunMainBoardFrame();
SyncGPUs();
RenderFrame();
RunSoundBoardFrame();
if (DriveBoard.IsAttached())
RunDriveBoardFrame();
}
timings.frameTicks = CThread::GetTicks() - start;
return;
ThreadError:
ErrorLog("Threading error in CModel3::RunFrame: %s\nSwitching back to single-threaded mode.\n", CThread::GetLastError());
m_multiThreaded = false;
}
void CModel3::RunMainBoardFrame(void)
{
UINT32 start = CThread::GetTicks();
// Compute display and VBlank timings
unsigned ppcCycles = m_config["PowerPCFrequency"].ValueAs() * 1000000;
unsigned frameCycles = ppcCycles / 60;
unsigned vblCycles = (unsigned)((float) frameCycles * 2.5f/100.0f); // 2.5% vblank (ridiculously short and wrong but bigger values cause flicker in Daytona)
unsigned dispCycles = frameCycles - vblCycles;
// Scale PPC timer ratio according to speed at which the PowerPC is being emulated so that the observed running frequency of the PPC timer
// registers is more or less correct. This is needed to get the Virtua Striker 2 series of games running at the right speed (they are
// too slow otherwise). Other games appear to not be affected by this ratio so much as their running speed depends more on the timing of
// the Real3D status bit below.
ppc_set_timer_ratio(ppc_get_bus_freq_multipler() * 2 * ppcCycles / ppc_get_cycles_per_sec());
// Compute timing of the Real3D status bit. This value directly affects the speed at which all the games except Virtua Stiker 2 run.
// Currently it is not known exactly what this bit represents nor why such wildly varying values are needed for the different step models.
// The values below were arrived at by trial and error and clearly more investigation is required. If it turns out that the status bit is
// connected to the end of VBlank then the code below should be removed and the timing handled via GPU.VBlankEnd() instead.
unsigned statusCycles;
if (m_game.stepping == "2.0" || m_game.stepping == "2.1")
{
// For some reason, Fighting Vipers 2 and Daytona USA 2 require completely different timing to the rest of the step 2.x games
if (m_game.name == "daytona2" || (m_game.stepping == "2.0" && m_game.name == "fvipers2"))
statusCycles = (unsigned)((float)frameCycles * 24.0f/100.0f);
else
statusCycles = (unsigned)((float)frameCycles * 9.12f/100.0f);
}
else if (m_game.stepping == "1.5")
statusCycles = (unsigned)((float)frameCycles * 5.5f/100.0f);
else
statusCycles = (unsigned)((float)frameCycles * 48.0f/100.0f);
// VBlank
if (gpusReady)
{
TileGen.BeginVBlank();
GPU.BeginVBlank(statusCycles);
IRQ.Assert(0x02);
ppc_execute(vblCycles);
//printf("PC=%08X LR=%08X\n", ppc_get_pc(), ppc_get_lr());
/*
* Sound:
*
* Bit 0x20 of the MIDI control port appears to enable periodic interrupts,
* which are used to send MIDI commands. Often games will write 0x27, send
* a series of commands, and write 0x06 to stop. Other games, like Star
* Wars Trilogy and Sega Rally 2, will enable interrupts at the beginning
* by writing 0x37 and will disable/enable interrupts to control command
* output.
*/
//printf("\t-- BEGIN (Ctrl=%02X, IRQEn=%02X, IRQPend=%02X) --\n", midiCtrlPort, IRQ.ReadIRQEnable()&0x40, IRQ.ReadIRQState());
int irqCount = 0;
while ((midiCtrlPort&0x20))
//while (midiCtrlPort == 0x27) // 27 triggers IRQ sequence, 06 stops it
{
// Don't waste time firing MIDI interrupts if game has disabled them
if ((IRQ.ReadIRQEnable()&0x40) == 0)
break;
// Process MIDI interrupt
IRQ.Assert(0x40);
ppc_execute(200); // give PowerPC time to acknowledge IRQ
IRQ.Deassert(0x40);
ppc_execute(200); // acknowledge that IRQ was deasserted (TODO: is this really needed?)
dispCycles -= 400;
++irqCount;
if (irqCount > 128)
{
//printf("\tMIDI FIFO OVERFLOW! (IRQEn=%02X, IRQPend=%02X)\n", IRQ.ReadIRQEnable()&0x40, IRQ.ReadIRQState());
break;
}
}
//printf("\t-- END --\n");
//printf("PC=%08X LR=%08X\n", ppc_get_pc(), ppc_get_lr());
// End VBlank
GPU.EndVBlank();
TileGen.EndVBlank();
IRQ.Assert(0x0D);
}
// Run the PowerPC for the active display part of the frame
ppc_execute(dispCycles);
// MAME believes 0x0C should occur on every scanline
//for (int i = 0; i < 384; i++)
//{
// ppc_execute(dispCycles / 384);
// IRQ.Assert(0x0C);
//}
//printf("PC=%08X LR=%08X\n", ppc_get_pc(), ppc_get_lr());
timings.ppcTicks = CThread::GetTicks() - start;
}
void CModel3::SyncGPUs(void)
{
UINT32 start = CThread::GetTicks();
timings.syncSize = GPU.SyncSnapshots() + TileGen.SyncSnapshots();
gpusReady = true;
timings.syncTicks = CThread::GetTicks() - start;
}
void CModel3::RenderFrame(void)
{
UINT32 start = CThread::GetTicks();
// Call OSD video callbacks
if (BeginFrameVideo() && gpusReady)
{
// Render frame
TileGen.BeginFrame();
GPU.BeginFrame();
TileGen.PreRenderFrame();
TileGen.RenderFrameBottom();
GPU.RenderFrame();
TileGen.RenderFrameTop();
GPU.EndFrame();
TileGen.EndFrame();
}
EndFrameVideo();
timings.renderTicks = CThread::GetTicks() - start;
}
bool CModel3::RunSoundBoardFrame(void)
{
UINT32 start = CThread::GetTicks();
bool bufferFull = SoundBoard.RunFrame();
timings.sndTicks = CThread::GetTicks() - start;
return bufferFull;
}
void CModel3::RunDriveBoardFrame(void)
{
UINT32 start = CThread::GetTicks();
DriveBoard.RunFrame();
timings.drvTicks = CThread::GetTicks() - start;
}
bool CModel3::StartThreads(void)
{
if (startedThreads)
return true;
// Create synchronization objects
if (m_gpuMultiThreaded)
{
ppcBrdThreadSync = CThread::CreateSemaphore(0);
if (ppcBrdThreadSync == NULL)
goto ThreadError;
}
sndBrdThreadSync = CThread::CreateSemaphore(0);
if (sndBrdThreadSync == NULL)
goto ThreadError;
sndBrdNotifyLock = CThread::CreateMutex();
if (sndBrdNotifyLock == NULL)
goto ThreadError;
sndBrdNotifySync = CThread::CreateCondVar();
if (sndBrdNotifySync == NULL)
goto ThreadError;
if (DriveBoard.IsAttached())
{
drvBrdThreadSync = CThread::CreateSemaphore(0);
if (drvBrdThreadSync == NULL)
goto ThreadError;
}
notifyLock = CThread::CreateMutex();
if (notifyLock == NULL)
goto ThreadError;
notifySync = CThread::CreateCondVar();
if (notifySync == NULL)
goto ThreadError;
// Reset thread flags
pauseThreads = false;
stopThreads = false;
// Create PPC main board thread, if multi-threading GPU
if (m_gpuMultiThreaded)
{
ppcBrdThread = CThread::CreateThread(StartMainBoardThread, this);
if (ppcBrdThread == NULL)
goto ThreadError;
}
// Create sound board thread (sync'd or unsync'd)
if (syncSndBrdThread)
sndBrdThread = CThread::CreateThread(StartSoundBoardThreadSyncd, this);
else
sndBrdThread = CThread::CreateThread(StartSoundBoardThread, this);
if (sndBrdThread == NULL)
goto ThreadError;
// Create drive board thread, if drive board is attached
if (DriveBoard.IsAttached())
{
drvBrdThread = CThread::CreateThread(StartDriveBoardThread, this);
if (drvBrdThread == NULL)
goto ThreadError;
}
// Set audio callback if sound board thread is unsync'd
if (!syncSndBrdThread)
SetAudioCallback(AudioCallback, this);
startedThreads = true;
return true;
ThreadError:
ErrorLog("Unable to create threads and/or synchronization objects: %s\nSwitching back to single-threaded mode.\n", CThread::GetLastError());
DeleteThreadObjects();
m_multiThreaded = false;
return false;
}
bool CModel3::PauseThreads(void)
{
if (!startedThreads)
return true;
// Enter notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Let threads know that they should pause and wait for all of them to do so
pauseThreads = true;
while (ppcBrdThreadRunning || sndBrdThreadRunning || drvBrdThreadRunning)
{
if (!notifySync->Wait(notifyLock))
goto ThreadError;
}
// Leave notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
return true;
ThreadError:
ErrorLog("Threading error in CModel3::PauseThreads: %s\nSwitching back to single-threaded mode.\n", CThread::GetLastError());
m_multiThreaded = false;
return false;
}
bool CModel3::ResumeThreads(void)
{
if (!startedThreads)
return true;
// Enter notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Let all threads know that they can continue running
pauseThreads = false;
// Leave notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
return true;
ThreadError:
ErrorLog("Threading error in CModel3::ResumeThreads: %s\nSwitching back to single-threaded mode.\n", CThread::GetLastError());
m_multiThreaded = false;
return false;
}
bool CModel3::StopThreads(void)
{
if (!startedThreads)
return true;
// If sound board thread is unsync'd then remove audio callback
if (!syncSndBrdThread)
SetAudioCallback(NULL, NULL);
// Enter notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Let threads know that they should pause and wait for all of them to do so
pauseThreads = true;
while (ppcBrdThreadRunning || sndBrdThreadRunning || drvBrdThreadRunning)
{
if (!notifySync->Wait(notifyLock))
goto ThreadError;
}
// Now let threads know that they should exit
stopThreads = true;
// Leave notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
// Resume each thread in turn and wait for them to exit
if (ppcBrdThread != NULL)
{
if (ppcBrdThreadSync->Post())
ppcBrdThread->Wait();
}
if (sndBrdThread != NULL)
{
if (syncSndBrdThread)
{
if (sndBrdThreadSync->Post())
sndBrdThread->Wait();
}
else
{
if (WakeSoundBoardThread())
sndBrdThread->Wait();
}
}
if (drvBrdThread != NULL)
{
if (drvBrdThreadSync->Post())
drvBrdThread->Wait();
}
// Delete all thread and synchronization objects
DeleteThreadObjects();
startedThreads = false;
return true;
ThreadError:
ErrorLog("Threading error in CModel3::StopThreads: %s\nSwitching back to single-threaded mode.\n", CThread::GetLastError());
m_multiThreaded = false;
return false;
}
void CModel3::DeleteThreadObjects(void)
{
// Delete PPC main board, sound board and drive board threads
if (ppcBrdThread != NULL)
{
delete ppcBrdThread;
ppcBrdThread = NULL;
}
if (sndBrdThread != NULL)
{
delete sndBrdThread;
sndBrdThread = NULL;
}
if (drvBrdThread != NULL)
{
delete drvBrdThread;
drvBrdThread = NULL;
}
// Delete synchronization objects
if (ppcBrdThreadSync != NULL)
{
delete ppcBrdThreadSync;
ppcBrdThreadSync = NULL;
}
if (sndBrdThreadSync != NULL)
{
delete sndBrdThreadSync;
sndBrdThreadSync = NULL;
}
if (drvBrdThreadSync != NULL)
{
delete drvBrdThreadSync;
drvBrdThreadSync = NULL;
}
if (sndBrdNotifyLock != NULL)
{
delete sndBrdNotifyLock;
sndBrdNotifyLock = NULL;
}
if (sndBrdNotifySync != NULL)
{
delete sndBrdNotifySync;
sndBrdNotifySync = NULL;
}
if (notifyLock != NULL)
{
delete notifyLock;
notifyLock = NULL;
}
if (notifySync != NULL)
{
delete notifySync;
notifySync = NULL;
}
}
void CModel3::DumpTimings(void)
{
printf("PPC:%3ums%c render:%3ums%c sync:%4uK%c%3ums%c snd:%3ums%c drv:%3ums%c frame:%3ums%c\n",
timings.ppcTicks, (timings.ppcTicks > timings.renderTicks ? '!' : ','),
timings.renderTicks, (timings.renderTicks > timings.ppcTicks ? '!' : ','),
timings.syncSize / 1024, (timings.syncSize / 1024 > 128 ? '!' : ','),
timings.syncTicks, (timings.syncTicks > 1 ? '!' : ','),
timings.sndTicks, (timings.sndTicks > 10 ? '!' : ','),
timings.drvTicks, (timings.drvTicks > 10 ? '!' : ','),
timings.frameTicks, (timings.frameTicks > 16 ? '!' : ' '));
}
FrameTimings CModel3::GetTimings(void)
{
return timings;
}
int CModel3::StartMainBoardThread(void *data)
{
// Call method on CModel3 to run PPC main board thread
CModel3 *model3 = (CModel3*)data;
return model3->RunMainBoardThread();
}
int CModel3::StartSoundBoardThread(void *data)
{
// Call method on CModel3 to run sound board thread (unsync'd)
CModel3 *model3 = (CModel3*)data;
return model3->RunSoundBoardThread();
}
int CModel3::StartSoundBoardThreadSyncd(void *data)
{
// Call method on CModel3 to run sound board thread (sync'd)
CModel3 *model3 = (CModel3*)data;
return model3->RunSoundBoardThreadSyncd();
}
int CModel3::StartDriveBoardThread(void *data)
{
// Call method on CModel3 to run drive board thread
CModel3 *model3 = (CModel3*)data;
return model3->RunDriveBoardThread();
}
int CModel3::RunMainBoardThread(void)
{
for (;;)
{
bool wait = true;
bool exit = false;
while (wait && !exit)
{
// Wait on PPC main board thread semaphore
if (!ppcBrdThreadSync->Wait())
goto ThreadError;
// Enter notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Check threads are not being stopped or paused
if (stopThreads)
exit = true;
else if (!pauseThreads)
{
wait = false;
ppcBrdThreadRunning = true;
}
// Leave notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
}
if (exit)
return 0;
// Process a single frame for PPC main board
RunMainBoardFrame();
// Enter notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Let other threads know processing has finished
ppcBrdThreadRunning = false;
ppcBrdThreadDone = true;
if (!notifySync->SignalAll())
goto ThreadError;
// Leave notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
}
ThreadError:
ErrorLog("Threading error in RunMainBoardThread: %s\nSwitching back to single-threaded mode.\n", CThread::GetLastError());
m_multiThreaded = false;
return 1;
}
void CModel3::AudioCallback(void *data)
{
// Call method on CModel3 to wake sound board thread
CModel3 *model3 = (CModel3*)data;
model3->WakeSoundBoardThread();
}
bool CModel3::WakeSoundBoardThread(void)
{
// Enter sound board notify critical section
bool wake;
if (!sndBrdNotifyLock->Lock())
goto ThreadError;
// Enter main notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// See if sound board thread is currently running
wake = !sndBrdThreadRunning;
// Leave main notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
// Only send wake notification to sound board thread if it was not running
if (wake)
{
// Signal to sound board thread that it should start processing again
sndBrdWakeNotify = true;
if (!sndBrdNotifySync->Signal())
goto ThreadError;
}
// Leave sound board notify critical section
if (!sndBrdNotifyLock->Unlock())
goto ThreadError;
return wake;
ThreadError:
ErrorLog("Threading error in WakeSoundBoardThread: %s\nSwitching back to single-threaded mode.\n", CThread::GetLastError());
m_multiThreaded = false;
return false;
}
int CModel3::RunSoundBoardThread(void)
{
for (;;)
{
bool wait = true;
bool exit = false;
while (wait && !exit)
{
// Enter sound board notify critical section
if (!sndBrdNotifyLock->Lock())
goto ThreadError;
// Wait for notification from audio callback
while (!sndBrdWakeNotify)
{
if (!sndBrdNotifySync->Wait(sndBrdNotifyLock))
goto ThreadError;
}
sndBrdWakeNotify = false;
// Enter main notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Check threads are not being stopped or paused
if (stopThreads)
exit = true;
else if (!pauseThreads)
{
wait = false;
sndBrdThreadRunning = true;
}
// Leave main notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
// Leave sound board notify critical section
if (!sndBrdNotifyLock->Unlock())
goto ThreadError;
}
if (exit)
return 0;
// Keep processing frames until pausing or audio buffer is full
while (true)
{
// Enter main notify critical section
bool paused;
if (!notifyLock->Lock())
goto ThreadError;
paused = pauseThreads;
// Leave main notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
if (paused || RunSoundBoardFrame())
break;
//printf("Rerunning sound board\n");
}
// Enter main notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Let other threads know processing has finished
sndBrdThreadRunning = false;
sndBrdThreadDone = true;
if (!notifySync->SignalAll())
goto ThreadError;
// Leave main notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
}
ThreadError:
ErrorLog("Threading error in RunSoundBoardThread: %s\nSwitching back to single-threaded mode.\n", CThread::GetLastError());
m_multiThreaded = false;
return 1;
}
int CModel3::RunSoundBoardThreadSyncd(void)
{
for (;;)
{
bool wait = true;
bool exit = false;
while (wait && !exit)
{
// Wait on sound board thread semaphore
if (!sndBrdThreadSync->Wait())
goto ThreadError;
// Enter notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Check threads are not being stopped or paused
if (stopThreads)
exit = true;
else if (!pauseThreads)
{
wait = false;
sndBrdThreadRunning = true;
}
// Leave notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
}
if (exit)
return 0;
// Process a single frame for sound board
RunSoundBoardFrame();
// Enter notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Let other threads know processing has finished
sndBrdThreadRunning = false;
sndBrdThreadDone = true;
if (!notifySync->SignalAll())
goto ThreadError;
// Leave notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
}
ThreadError:
ErrorLog("Threading error in RunSoundBoardThreadSyncd: %s\nSwitching back to single-threaded mode.\n", CThread::GetLastError());
m_multiThreaded = false;
return 1;
}
int CModel3::RunDriveBoardThread(void)
{
for (;;)
{
bool wait = true;
bool exit = false;
while (wait && !exit)
{
// Wait on drive board thread semaphore
if (!drvBrdThreadSync->Wait())
goto ThreadError;
// Enter notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Check threads are not being stopped or paused
if (stopThreads)
exit = true;
else if (!pauseThreads)
{
wait = false;
drvBrdThreadRunning = true;
}
// Leave notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
}
if (exit)
return 0;
// Process a single frame for drive board
RunDriveBoardFrame();
// Enter notify critical section
if (!notifyLock->Lock())
goto ThreadError;
// Let other threads know processing has finished
drvBrdThreadRunning = false;
drvBrdThreadDone = true;
if (!notifySync->SignalAll())
goto ThreadError;
// Leave notify critical section
if (!notifyLock->Unlock())
goto ThreadError;
}
ThreadError:
ErrorLog("Threading error in RunDriveBoardThread: %s\nSwitching back to single-threaded mode.\n", CThread::GetLastError());
m_multiThreaded = false;
return 1;
}
void CModel3::Reset(void)
{
// Clear memory (but do not modify backup RAM!)
memset(ram, 0, 0x800000);
// Initial bank is bank 0
SetCROMBank(0xFF);
// Reset security device
securityPtr = 0;
m_securityFirstRead = true;
// Reset inputs
inputBank = 0;
serialFIFO1 = 0;
serialFIFO2 = 0;
adcChannel = 0;
// MIDI
midiCtrlPort = 0;
// Reset all devices
ppc_reset();
IRQ.Reset();
PCIBridge.Reset();
PCIBus.Reset();
SCSI.Reset();
RTC.Reset();
EEPROM.Reset();
TileGen.Reset();
GPU.Reset();
SoundBoard.Reset();
if (DriveBoard.IsAttached())
DriveBoard.Reset();
m_cryptoDevice.Reset();
gpusReady = false;
timings.ppcTicks = 0;
timings.syncSize = 0;
timings.syncTicks = 0;
timings.renderTicks = 0;
timings.sndTicks = 0;
timings.drvTicks = 0;
timings.frameTicks = 0;
DebugLog("Model 3 reset\n");
}
/******************************************************************************
Initialization, Shutdown, and ROM Management
******************************************************************************/
// Apply patches to games
static void Patch(uint8_t *crom, const Game &game)
{
if (game.name == "scudp")
{
// Base offset of program in CROM: 0x710000
}
else if (game.name == "lemans24")
{
// Base offset of program in CROM: 6473C0
*(UINT32 *) &crom[0x6D8C4C] = 0x00000002; // comm. mode: 00=master, 01=slave, 02=satellite
*(UINT32 *) &crom[0x73FE38] = 0x38840004; // an actual bug in the game code
*(UINT32 *) &crom[0x73EB5C] = 0x60000000;
*(UINT32 *) &crom[0x73EDD0] = 0x60000000;
*(UINT32 *) &crom[0x73EDC4] = 0x60000000;
}
else if (game.name == "lostwsga")
{
*(UINT32 *) &crom[0x7374f4] = 0x38840004; // an actual bug in the game code
}
else if (game.name == "vs215" || game.name == "vs215o" || game.name == "vs29815")
{
// VS215 is a modification of VS2 that runs on Step 1.5 hardware. I
// suspect the code here is trying to detect the system type but am too
// lazy to figure it out right now.
*(UINT32 *) &crom[0x7001A8] = 0x48000000+(0xFFF01630-0xFFF001A8); // force a jump to FFF01630
}
else if (game.name == "vs298")
{
// Base offset of program in CROM: 600000
// Inexplicably, at PC=AFC1C, a call is made to FC78, which is right in the middle of some
// totally unrelated initialization code (ASIC checks). This causes an invalid pointer to be fetched.
// Perhaps FC78 should be overwritten with other program data by then? Why is it not?
// Or, 300138 needs to be written with a non-zero value, it is loaded from EEPROM but is 0.
*(UINT32 *) &crom[0x6AFC1C] = 0x60000000;
}
else if (game.name == "srally2")
{
*(UINT32 *) &crom[0x7C0C4] = 0x60000000;
*(UINT32 *) &crom[0x7C0C8] = 0x60000000;
*(UINT32 *) &crom[0x7C0CC] = 0x60000000;
}
else if (game.name == "harley")
{
*(UINT32 *) &crom[0x50E8D4] = 0x60000000;
*(UINT32 *) &crom[0x50E8F4] = 0x60000000;
*(UINT32 *) &crom[0x50FB84] = 0x60000000;
}
else if (game.name == "harleyb")
{
*(UINT32 *) &crom[0x50ECB4] = 0x60000000;
*(UINT32 *) &crom[0x50ECD4] = 0x60000000;
*(UINT32 *) &crom[0x50FF64] = 0x60000000;
}
else if (game.name == "swtrilgy")
{
*(UINT32 *) &crom[0xF0E48] = 0x60000000;
*(UINT32 *) &crom[0x043DC] = 0x48000090; // related to joystick feedback
*(UINT32 *) &crom[0x029A0] = 0x60000000;
*(UINT32 *) &crom[0x02A0C] = 0x60000000;
}
else if (game.name == "swtrilgya")
{
*(UINT32 *) &crom[0xF6DD0] = 0x60000000; // from MAME
}
else if (game.name == "eca" || game.name == "ecax")
{
*(UINT32 *) &crom[0x535580] = 0x60000000;
//*(UINT32 *) &crom[0x5023B4] = 0x60000000;
//*(UINT32 *) &crom[0x5023D4] = 0x60000000;
}
}
// Reverses all aligned 16-bit words, thereby switching their endianness (assumes buffer size is divisible by 2)
static void Reverse16(uint8_t *buf, size_t size)
{
for (size_t i = 0; i < size; i += 2)
{
uint8_t tmp = buf[i+0];
buf[i+0] = buf[i+1];
buf[i+1] = tmp;
}
}
// Reverses all aligned 32-bit words, thereby switching their endianness (assumes buffer size is divisible by 4)
static void Reverse32(uint8_t *buf, size_t size)
{
for (size_t i = 0; i < size; i += 4)
{
uint8_t tmp1 = buf[i+0];
uint8_t tmp2 = buf[i+1];
buf[i+0] = buf[i+3];
buf[i+1] = buf[i+2];
buf[i+2] = tmp2;
buf[i+3] = tmp1;
}
}
// Offsets of memory regions within Model 3's pool
#define OFFSET_RAM 0 // 8 MB
#define OFFSET_CROM 0x800000 // 8 MB (fixed CROM)
#define OFFSET_CROMxx 0x1000000 // 128 MB (banked CROM0-3 must follow fixed CROM)
#define OFFSET_VROM 0x9000000 // 64 MB
#define OFFSET_BACKUPRAM 0xD000000 // 128 KB
#define OFFSET_SECURITYRAM 0xD020000 // 128 KB
#define OFFSET_SOUNDROM 0xD040000 // 512 KB (68K sound board program)
#define OFFSET_SAMPLEROM 0xD0C0000 // 16 MB (sound board samples)
#define OFFSET_DSBPROGROM 0xE0C0000 // 128 KB (DSB program)
#define OFFSET_DSBMPEGROM 0xE0E0000 // 16 MB (DSB MPEG data -- Z80 version only uses 8MB)
#define OFFSET_DRIVEROM 0xF0E0000 // 64 KB
#define MEMORY_POOL_SIZE (0x800000 + 0x800000 + 0x8000000 + 0x4000000 + 0x20000 + 0x20000 + 0x80000 + 0x1000000 + 0x20000 + 0x1000000 + 0x10000)
// 64-bit magic number used to detect loading of optional ROMs
#define MAGIC_NUMBER 0x4C444D5245505553ULL
const Game &CModel3::GetGame() const
{
return m_game;
}
// Stepping-dependent parameters (MPC10x type, etc.) are initialized here
bool CModel3::LoadGame(const Game &game, const ROMSet &rom_set)
{
m_game = Game();
/*
* Copy in ROM data with mirroring as necessary for the following cases:
*
* - VROM: 64MB. If <= 32MB, mirror to high 32MB.
* - Banked CROM: 128MB. If <= 64MB, mirror to high 64MB.
* - Fixed CROM: 8MB. If < 8MB, loaded only in high part of space and low
* part is a mirror of (banked) CROM0.
* - Sample ROM: 16MB. If <= 8MB, mirror to high 8MB.
*
* ROMs are released after being loaded.
*/
if (rom_set.get_rom("vrom").size <= 32*0x100000)
{
rom_set.get_rom("vrom").CopyTo(&vrom[0], 32*100000);
rom_set.get_rom("vrom").CopyTo(&vrom[32*0x100000], 32*0x100000);
}
else
rom_set.get_rom("vrom").CopyTo(vrom, 64*0x100000);
if (rom_set.get_rom("banked_crom").size <= 64*0x100000)
{
rom_set.get_rom("banked_crom").CopyTo(&crom[8*0x100000 + 0], 64*0x100000);
rom_set.get_rom("banked_crom").CopyTo(&crom[8*0x100000 + 64*0x100000], 64*0x100000);
}
else
rom_set.get_rom("banked_crom").CopyTo(&crom[8*0x100000 + 0], 128*0x100000);
size_t crom_size = rom_set.get_rom("crom").size;
rom_set.get_rom("crom").CopyTo(&crom[8*0x100000 - crom_size], crom_size);
if (crom_size < 8*0x100000)
rom_set.get_rom("banked_crom").CopyTo(&crom[0], 8*0x100000 - crom_size);
if (rom_set.get_rom("sound_samples").size <= 8*0x100000)
{
rom_set.get_rom("sound_samples").CopyTo(&sampleROM[0], 8*0x100000);
rom_set.get_rom("sound_samples").CopyTo(&sampleROM[8*0x100000], 8*0x100000);
}
else
rom_set.get_rom("sound_samples").CopyTo(sampleROM, 16*0x100000);
rom_set.get_rom("sound_program").CopyTo(soundROM, 512*1024);
rom_set.get_rom("mpeg_program").CopyTo(dsbROM, 128*1024);
rom_set.get_rom("mpeg_music").CopyTo(mpegROM, 16*0x100000);
rom_set.get_rom("driveboard_program").CopyTo(driveROM, 64*1024);
// Convert PowerPC and 68K ROMs to little endian words
Util::FlipEndian32(crom, 8*0x100000 + 128*0x100000);
Util::FlipEndian16(soundROM, 512*1024);
Util::FlipEndian16(sampleROM, 16*0x100000);
// Initialize CPU
PPC_CONFIG ppc_config;
if (game.stepping == "2.0" || game.stepping == "2.1")
{
ppc_config.pvr = PPC_MODEL_603R; // 166 MHz
ppc_config.bus_frequency = BUS_FREQUENCY_66MHZ;
ppc_config.bus_frequency_multiplier = 0x25; // 2.5X multiplier
PCIBridge.SetModel(0x106); // MPC106
}
else if (game.stepping == "1.5")
{
ppc_config.pvr = PPC_MODEL_603E; // 100 MHz
ppc_config.bus_frequency = BUS_FREQUENCY_66MHZ;
ppc_config.bus_frequency_multiplier = 0x15; // 1.5X multiplier
if (game.name == "scudp1")
PCIBridge.SetModel(0x106); // some Step 1.x games use MPC106
else
PCIBridge.SetModel(0x105); // MPC105
}
else if (game.stepping == "1.0")
{
ppc_config.pvr = PPC_MODEL_603R; // 66 MHz
ppc_config.bus_frequency = BUS_FREQUENCY_66MHZ;
ppc_config.bus_frequency_multiplier = 0x10; // 1X multiplier
if (game.name == "bass" || game.name == "getbass")
PCIBridge.SetModel(0x106); // some Step 1.x games use MPC106
else
PCIBridge.SetModel(0x105); // MPC105
}
else
{
ErrorLog("Cannot configure Model 3 because game uses unrecognized stepping (%s).", game.stepping.c_str());
return FAIL;
}
ppc_init(&ppc_config);
ppc_attach_bus(this);
PPCFetchRegions[0].start = 0;
PPCFetchRegions[0].end = 0x007FFFFF;
PPCFetchRegions[0].ptr = (UINT32 *) ram;
PPCFetchRegions[1].start = 0xFF800000;
PPCFetchRegions[1].end = 0xFFFFFFFF;
PPCFetchRegions[1].ptr = (UINT32 *) crom;
PPCFetchRegions[2].start = 0;
PPCFetchRegions[2].end = 0;
PPCFetchRegions[2].ptr = NULL;
ppc_set_fetch(PPCFetchRegions);
// Initialize Real3D
int stepping = ((game.stepping[0] - '0') << 4) | (game.stepping[2] - '0');
GPU.SetStepping(stepping);
// MPEG board (if present)
if (rom_set.get_rom("mpeg_program").size)
{
if (game.mpeg_board == "DSB1")
{
DSB = new(std::nothrow) CDSB1(m_config);
if (NULL == DSB)
return ErrorLog("Insufficient memory for Digital Sound Board object.");
}
else if (game.mpeg_board == "DSB2")
{
Util::FlipEndian16(dsbROM, 128*1024); // 68K program needs to be byte swapped
DSB = new(std::nothrow) CDSB2(m_config);
if (NULL == DSB)
return ErrorLog("Insufficient memory for Digital Sound Board object.");
}
else if (game.mpeg_board.empty())
ErrorLog("No MPEG board type defined in game XML for MPEG ROMs.");
else
ErrorLog("Unknown MPEG board type '%s'. Only 'DSB1' and 'DSB2' are supported.", game.mpeg_board.c_str());
if (DSB && OKAY != DSB->Init(dsbROM, mpegROM))
return FAIL;
}
SoundBoard.AttachDSB(DSB);
// Drive board (if present)
if (rom_set.get_rom("driveboard_program").size)
{
if (DriveBoard.Init(driveROM))
return FAIL;
}
else
DriveBoard.Init(NULL);
// Security board encryption device
m_cryptoDevice.Init(game.encryption_key, std::bind(&CModel3::ReadSecurityRAM, this, std::placeholders::_1));
// Apply ROM patches
//TODO: place these in XML
Patch(crom, game);
// Print game information
std::set extra_hw;
if (DSB)
extra_hw.insert(Util::Format() << "Digital Sound Board (Type " << game.mpeg_board << ")");
if (rom_set.get_rom("driveboard_program").size)
extra_hw.insert("Drive Board");
if (game.encryption_key)
extra_hw.insert("Security Board");
std::cout << " Title: " << game.title << std::endl;
std::cout << " ROM Set: " << game.name << std::endl;
std::cout << " Developer: " << game.manufacturer << std::endl;
std::cout << " Year: " << game.year << std::endl;
std::cout << " Stepping: " << game.stepping << std::endl;
if (!extra_hw.empty())
std::cout << " Extra Hardware: " << Util::Format(", ").Join(extra_hw) << std::endl;
std::cout << std::endl;
m_game = game;
return OKAY;
}
void CModel3::AttachRenderers(CRender2D *Render2DPtr, IRender3D *Render3DPtr)
{
TileGen.AttachRenderer(Render2DPtr);
GPU.AttachRenderer(Render3DPtr);
}
void CModel3::AttachInputs(CInputs *InputsPtr)
{
Inputs = InputsPtr;
if (DriveBoard.IsAttached())
DriveBoard.AttachInputs(Inputs, m_game.inputs);
DebugLog("Model 3 attached inputs\n");
}
void CModel3::AttachOutputs(COutputs *OutputsPtr)
{
Outputs = OutputsPtr;
Outputs->SetGame(m_game);
Outputs->Attached();
if (DriveBoard.IsAttached())
DriveBoard.AttachOutputs(Outputs);
DebugLog("Model 3 attached outputs\n");
}
// Model 3 initialization. Some initialization is deferred until ROMs are loaded in LoadROMSet()
bool CModel3::Init(void)
{
float memSizeMB = (float)MEMORY_POOL_SIZE/(float)0x100000;
// Allocate all memory for ROMs and PPC RAM
memoryPool = new(std::nothrow) UINT8[MEMORY_POOL_SIZE];
if (NULL == memoryPool)
return ErrorLog("Insufficient memory for Model 3 object (needs %1.1f MB).", memSizeMB);
memset(memoryPool, 0, MEMORY_POOL_SIZE);
// Set up pointers
ram = &memoryPool[OFFSET_RAM];
crom = &memoryPool[OFFSET_CROM];
vrom = &memoryPool[OFFSET_VROM];
soundROM = &memoryPool[OFFSET_SOUNDROM];
sampleROM = &memoryPool[OFFSET_SAMPLEROM];
dsbROM = &memoryPool[OFFSET_DSBPROGROM];
mpegROM = &memoryPool[OFFSET_DSBMPEGROM];
backupRAM = &memoryPool[OFFSET_BACKUPRAM];
securityRAM = &memoryPool[OFFSET_SECURITYRAM];
driveROM = &memoryPool[OFFSET_DRIVEROM];
SetCROMBank(0xFF);
// Initialize other devices (PowerPC, DSB, and security board initialized after ROMs loaded)
IRQ.Init();
PCIBridge.Init();
PCIBus.Init();
SCSI.Init(this,&IRQ,0x100); // SCSI is actually a non-maskable interrupt, so we give it a bit number outside of 8-bit range
RTC.Init();
EEPROM.Init();
if (OKAY != TileGen.Init(&IRQ))
return FAIL;
if (OKAY != GPU.Init(vrom,this,&IRQ,0x100)) // same for Real3D DMA interrupt
return FAIL;
if (OKAY != SoundBoard.Init(soundROM,sampleROM))
return FAIL;
PCIBridge.AttachPCIBus(&PCIBus);
PCIBus.AttachDevice(13,&GPU);
PCIBus.AttachDevice(14,&SCSI);
PCIBus.AttachDevice(16,this);
DebugLog("Initialized Model 3 (allocated %1.1f MB)\n", memSizeMB);
return OKAY;
}
CSoundBoard *CModel3::GetSoundBoard(void)
{
return &SoundBoard;
}
CDriveBoard *CModel3::GetDriveBoard(void)
{
return &DriveBoard;
}
CModel3::CModel3(const Util::Config::Node &config)
: m_config(config),
m_multiThreaded(config["MultiThreaded"].ValueAs()),
m_gpuMultiThreaded(config["GPUMultiThreaded"].ValueAs()),
TileGen(config),
GPU(config),
SoundBoard(config),
DriveBoard(config)
{
// Initialize pointers so dtor can know whether to free them
memoryPool = NULL;
// Various uninitialized pointers
Inputs = NULL;
Outputs = NULL;
ram = NULL;
crom = NULL;
vrom = NULL;
soundROM = NULL;
sampleROM = NULL;
dsbROM = NULL;
mpegROM = NULL;
cromBank = NULL;
backupRAM = NULL;
securityRAM = NULL;
DSB = NULL;
securityPtr = 0;
startedThreads = false;
pauseThreads = false;
stopThreads = false;
ppcBrdThread = NULL;
sndBrdThread = NULL;
drvBrdThread = NULL;
ppcBrdThreadRunning = false;
ppcBrdThreadDone = false;
sndBrdThreadRunning = false;
sndBrdThreadDone = false;
drvBrdThreadRunning = false;
drvBrdThreadDone = false;
syncSndBrdThread = false;
ppcBrdThreadSync = NULL;
sndBrdThreadSync = NULL;
drvBrdThreadSync = NULL;
notifyLock = NULL;
notifySync = NULL;
DebugLog("Built Model 3\n");
}
// Dumps a memory region to a file for debugging purposes
/*
static void Dump(const char *file, uint8_t *buf, size_t size, bool reverse32, bool reverse16)
{
FILE *fp = fopen(file, "wb");
if (NULL != fp)
{
if (reverse32)
Reverse32(buf, size);
else if (reverse16)
Reverse16(buf, size);
fwrite(buf, sizeof(UINT8), size, fp);
fclose(fp);
printf("dumped %s\n", file);
}
else
printf("unable to dump %s\n", file);
}
*/
CModel3::~CModel3(void)
{
/*
// Debug: dump some files
//Dump("ram", ram, 0x800000, true, false);
//Dump("vrom", vrom, 0x4000000, true, false);
Dump("crom", crom, 0x800000, true, false);
//Dump("bankedCrom", &crom[0x800000], 0x7000000, true, false);
//Dump("soundROM", soundROM, 0x80000, false, true);
//Dump("sampleROM", sampleROM, 0x800000, false, true);
*/
// Stop all threads
StopThreads();
// Free memory
if (memoryPool != NULL)
{
delete [] memoryPool;
memoryPool = NULL;
}
if (DSB != NULL)
{
delete DSB;
DSB = NULL;
}
Inputs = NULL;
Outputs = NULL;
ram = NULL;
crom = NULL;
vrom = NULL;
soundROM = NULL;
sampleROM = NULL;
dsbROM = NULL;
mpegROM = NULL;
cromBank = NULL;
backupRAM = NULL;
securityRAM = NULL;
DebugLog("Destroyed Model 3\n");
}