109 lines
No EOL
2.5 KiB
C++
109 lines
No EOL
2.5 KiB
C++
#ifndef MACHINE_H
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#define MACHINE_H
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#include <string>
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#include <iostream>
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#include <vector>
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#include <memory>
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#include "constants.h"
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#include "device.h"
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#include "input_device.h"
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#include "output_device.h"
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#include "file_device.h"
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#include "opcode.h"
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#include "utils.h"
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using std::string;
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using std::cerr;
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using std::endl;
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using std::cout;
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class Machine {
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public:
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Machine();
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~Machine();
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int getA() const { return A; }
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void setA(int value) { A = toSIC24(value); }
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int getB() const { return B; }
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void setB(int value) { B = toSIC24(value); }
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int getX() const { return X; }
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void setX(int value) { X = toSIC24(value); }
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int getL() const { return L; }
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void setL(int value) { L = toSIC24(value); }
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int getS() const { return S; }
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void setS(int value) { S = toSIC24(value); }
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int getT() const { return T; }
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void setT(int value) { T = toSIC24(value); }
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// PC is an address → don't mask to 24 unless you want 24-bit addressing
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int getPC() const { return PC; }
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void setPC(int value) { PC = value; }
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// status word: keep as-is
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int getSW() const { return SW; }
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void setSW(int value) { SW = value; }
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double getF() const { return F; }
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void setF(double value) { F = value; }
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int getReg(int regNum) const;
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void setReg(int regNum, int value);
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// Memory access methods
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int getByte(int address);
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void setByte(int address, int value);
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int getWord(int address);
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void setWord(int address, int value);
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double getFloat(int address);
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void setFloat(int address, double value);
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// Device access methods
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Device& getDevice(int num);
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void setDevice(int num, std::shared_ptr<Device> device);
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// Set a file device at index `num` using the provided filename.
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void setFileDevice(int num, const std::string &filename);
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// Fetch and execute instructions
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int fetch();
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void execute();
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bool execF1(int opcode);
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bool execF2(int opcode, int operand);
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bool execSICF3F4(int opcode, int ni, int x, int b, int p, int e, int operand);
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// error handling methods
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void notImplemented(string mnemonic);
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void invalidOpcode(int opcode);
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void invalidAddressing();
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void divisionByZero(int opcode);
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void undefinedHandler(int opcode);
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private:
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// registers
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int A, B, X, L, S, T, PC, SW;
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double F;
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// memory
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unsigned char memory[MEMORY_SIZE];
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// devices
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std::vector<std::shared_ptr<Device>> devices;
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// fallback device returned when device slot is empty/invalid
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Device fallbackDevice;
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};
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#endif // MACHINE_H
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