Adding an error message on invalid instructions

sources/Debugger/CPU/CPUDebug.cpp

@@ -9,6 +9,7 @@
 #include <QPainter>
 #include <iostream>
 #include <utility>
+#include <QMessageBox>
 
 using namespace ComSquare::CPU;
 
@@ -134,8 +135,19 @@ namespace ComSquare::Debugger
 		return ret;
 	}
 
-	void CPUDebug::pause()
+	void CPUDebug::showError(const DebuggableError &error)
 	{
+		QMessageBox msg;
+		msg.setIcon(QMessageBox::Critical);
+		msg.setText("Invalid rom action");
+		msg.setInformativeText(error.what());
+		msg.exec();
+	}
+
+	void CPUDebug::pause(bool forcePause)
+	{
+		if (forcePause && this->_isPaused)
+			return;
 		this->_isPaused = !this->_isPaused;
 		if (this->_isPaused)
 			this->_ui.actionPause->setText("Continue");

sources/Debugger/CPU/CPUDebug.hpp

@@ -248,8 +248,10 @@ namespace ComSquare::Debugger
 		std::string _getAbsoluteIndirectLongValue(uint24_t pc);
 
 	public:
+		//! @brief Show an error dialog related to an exception.
+		void showError(const DebuggableError &error);
 		//! @brief Pause/Resume the CPU.
-		void pause();
+		void pause(bool forcePause = false);
 		//! @brief Step - Execute a single instruction.
 		void step();
 		//! @brief Next - Continue running instructions until the next line is reached.

sources/Debugger/CPU/Disassembly.cpp

@@ -251,7 +251,7 @@ namespace ComSquare::Debugger
 
 	std::string CPUDebug::_getAbsoluteIndirectValue(uint24_t pc)
 	{
-		uint24_t value = this->_bus->read(pc) + (this->_bus->read(pc + 1, true) << 8u);
+		uint24_t value = this->_bus->read(pc, true) + (this->_bus->read(pc + 1, true) << 8u);
 		return "(" + Utility::to_hex(value, Utility::HexString::AsmPrefix) + ")";
 	}
 
@@ -266,7 +266,7 @@ namespace ComSquare::Debugger
 
 	std::string CPUDebug::_getAbsoluteIndirectIndexedByXValue(uint24_t pc)
 	{
-		uint24_t value = this->_bus->read(pc) + (this->_bus->read(pc + 1, true) << 8u);
+		uint24_t value = this->_bus->read(pc, true) + (this->_bus->read(pc + 1, true) << 8u);
 		return "(" + Utility::to_hex(value, Utility::HexString::AsmPrefix) + ", x)";
 	}
 }