Mesen2/Core/SNES/SnesControlManager.cpp
Sour 2d96724b28 Debugger: SNES - Added new "break on..." options
Invalid vram/oam/cgram access, controller read while auto-read is running
2025-03-27 21:30:38 +09:00

153 lines
4.3 KiB
C++

#include "pch.h"
#include "SNES/SnesControlManager.h"
#include "SNES/SnesConsole.h"
#include "SNES/SnesMemoryManager.h"
#include "SNES/InternalRegisters.h"
#include "Shared/Emulator.h"
#include "Shared/EmuSettings.h"
#include "Shared/KeyManager.h"
#include "Shared/Interfaces/IKeyManager.h"
#include "Shared/Interfaces/IInputProvider.h"
#include "Shared/Interfaces/IInputRecorder.h"
#include "SNES/Input/SnesController.h"
#include "SNES/Input/SnesMouse.h"
#include "SNES/Input/Multitap.h"
#include "SNES/Input/SuperScope.h"
#include "Shared/EventType.h"
#include "Utilities/Serializer.h"
#include "Shared/SystemActionManager.h"
SnesControlManager::SnesControlManager(SnesConsole* console) : BaseControlManager(console->GetEmulator(), CpuType::Snes)
{
_console = console;
UpdateControlDevices();
}
SnesControlManager::~SnesControlManager()
{
}
void SnesControlManager::Reset(bool softReset)
{
_lastWriteValue = 0;
}
shared_ptr<BaseControlDevice> SnesControlManager::CreateControllerDevice(ControllerType type, uint8_t port)
{
shared_ptr<BaseControlDevice> device;
SnesConfig& cfg = _emu->GetSettings()->GetSnesConfig();
switch(type) {
default:
case ControllerType::None: break;
case ControllerType::SnesController:
device.reset(new SnesController(_emu, port, port == 0 ? cfg.Port1.Keys : cfg.Port2.Keys));
break;
case ControllerType::SnesMouse: device.reset(new SnesMouse(_emu, port, port == 0 ? cfg.Port1.Keys : cfg.Port2.Keys)); break;
case ControllerType::SuperScope: device.reset(new SuperScope(_console, port, port == 0 ? cfg.Port1.Keys : cfg.Port2.Keys)); break;
case ControllerType::Multitap: {
ControllerConfig controllers[4];
if(port == 0) {
std::copy(cfg.Port1SubPorts, cfg.Port1SubPorts + 4, controllers);
controllers[0].Keys = cfg.Port1.Keys;
} else {
std::copy(cfg.Port2SubPorts, cfg.Port2SubPorts + 4, controllers);
controllers[0].Keys = cfg.Port2.Keys;
}
device.reset(new Multitap(_console, port, controllers));
break;
}
}
return device;
}
void SnesControlManager::UpdateControlDevices()
{
SnesConfig& cfg = _emu->GetSettings()->GetSnesConfig();
if(_emu->GetSettings()->IsEqual(_prevConfig, cfg) && _controlDevices.size() > 0) {
//Do nothing if configuration is unchanged
return;
}
auto lock = _deviceLock.AcquireSafe();
ClearDevices();
for(int i = 0; i < 2; i++) {
shared_ptr<BaseControlDevice> device = CreateControllerDevice(i == 0 ? cfg.Port1.Type : cfg.Port2.Type, i);
if(device) {
RegisterControlDevice(device);
}
}
}
uint8_t SnesControlManager::Read(uint16_t addr, bool forAutoRead)
{
if(!forAutoRead) {
if(_console->GetInternalRegisters()->IsAutoReadActive()) {
_emu->BreakIfDebugging(CpuType::Snes, BreakSource::SnesReadDuringAutoJoy);
}
_console->GetInternalRegisters()->ProcessAutoJoypad();
SetInputReadFlag();
}
uint8_t value = _console->GetMemoryManager()->GetOpenBus() & (addr == 0x4016 ? 0xFC : 0xE0);
for(shared_ptr<BaseControlDevice> &device : _controlDevices) {
value |= device->ReadRam(addr);
}
if(addr == 0x4017) {
//These bits are always set to 1 for 4017
value |= 0x1C;
}
return value;
}
void SnesControlManager::Write(uint16_t addr, uint8_t value)
{
//OUT0 (the pin the controller ports have) is generated by the combination
//of the last value written to 4016.0 by the CPU ORed with the strobe value
//the auto-read circuit sets. If either one is set, OUT0 will be set.
if(_lastWriteValue != value) {
_console->GetInternalRegisters()->ProcessAutoJoypad();
_lastWriteValue = value;
for(shared_ptr<BaseControlDevice>& device : _controlDevices) {
device->WriteRam(addr, value | (uint8_t)_autoReadStrobe);
}
}
}
void SnesControlManager::SetAutoReadStrobe(bool strobe)
{
//OUT0 (the pin the controller ports have) is generated by the combination
//of the last value written to 4016.0 by the CPU ORed with the strobe value
//the auto-read circuit sets. If either one is set, OUT0 will be set.
if(_autoReadStrobe != strobe) {
_autoReadStrobe = strobe;
for(shared_ptr<BaseControlDevice>& device : _controlDevices) {
device->WriteRam(0x4016, _lastWriteValue | (uint8_t)strobe);
}
}
}
void SnesControlManager::Serialize(Serializer &s)
{
if(!s.IsSaving()) {
UpdateControlDevices();
}
BaseControlManager::Serialize(s);
for(int i = 0; i < (int)_controlDevices.size(); i++) {
SVI(_controlDevices[i]);
}
SV(_lastWriteValue);
SV(_autoReadStrobe);
}