This commit is contained in:
zanostro 2025-12-07 11:27:01 +01:00
parent 18a14d204c
commit 717568b6d0
30 changed files with 4093 additions and 209 deletions

View file

@ -4,18 +4,18 @@
#include <string>
#include <iostream>
#include <vector>
#include <memory>
#include <atomic>
#include <mutex>
#include "constants.h"
#include "device.h"
#include "input_device.h"
#include "output_device.h"
#include "file_device.h"
#include "opcode.h"
#include <memory>
#define MEMORY_SIZE 65536
#define NUM_DEVICES 256
#include "utils.h"
using std::string;
using std::cerr;
@ -26,30 +26,32 @@ using std::cout;
class Machine {
public:
Machine();
Machine(int speedHz) : Machine() { this->speedHz = speedHz; _instructionsTable = instructions; }
~Machine();
// Accessor methods for registers
int getA() const { return A; }
void setA(int value) { A = value; }
void setA(int value) { A = toSIC24(value); }
int getB() const { return B; }
void setB(int value) { B = value; }
void setB(int value) { B = toSIC24(value); }
int getX() const { return X; }
void setX(int value) { X = value; }
void setX(int value) { X = toSIC24(value); }
int getL() const { return L; }
void setL(int value) { L = value; }
void setL(int value) { L = toSIC24(value); }
int getS() const { return S; }
void setS(int value) { S = value; }
void setS(int value) { S = toSIC24(value); }
int getT() const { return T; }
void setT(int value) { T = value; }
void setT(int value) { T = toSIC24(value); }
// PC is an address → don't mask to 24 unless you want 24-bit addressing
int getPC() const { return PC; }
void setPC(int value) { PC = value; }
// status word: keep as-is
int getSW() const { return SW; }
void setSW(int value) { SW = value; }
@ -76,14 +78,19 @@ public:
// Set a file device at index `num` using the provided filename.
void setFileDevice(int num, const std::string &filename);
// Fetch and execute instructions
int fetch();
void execute();
bool execF1(int opcode);
bool execF2(int opcode, int operand);
bool execSICF3F4(int opcode, int ni, int operand);
// Execution and speed control
int getSpeed() const;
void setSpeed(int Hz);
void start();
void stop();
void tick();
void halt();
bool isStopped() const { return _stopped; }
void reset();
// error handling methods
void notImplemented(string mnemonic);
@ -92,6 +99,22 @@ public:
void divisionByZero(int opcode);
void undefinedHandler(int opcode);
bool getExtendedMode() const { return _exex_mode; }
void enableExtendedMode();
void disableExtendedMode();
int* getVectorRegister(int regNum);
void setVectorRegister(int regNum, const int* values);
const int* getVA() const { return VA; }
const int* getVS() const { return VS; }
const int* getVT() const { return VT; }
void setVA(const int* values);
void setVS(const int* values);
void setVT(const int* values);
private:
// registers
int A, B, X, L, S, T, PC, SW;
@ -104,42 +127,23 @@ private:
std::vector<std::shared_ptr<Device>> devices;
// fallback device returned when device slot is empty/invalid
Device fallbackDevice;
// Execution control
std::atomic<bool> running{false};
std::atomic<int> speedHz{10}; // Default 10 Hz
bool execF1(int opcode);
bool execF2(int opcode, int operand);
bool execSICF3F4(int opcode, int ni, int x, int b, int p, int e, int operand);
// Extended mode
bool _stopped{false};
bool _exex_mode{false};
InstructionInfo* _instructionsTable;
int VA[VECTOR_REG_SIZE], VS[VECTOR_REG_SIZE], VT[VECTOR_REG_SIZE]; // vector operation registers
};
// Convert integer to 24-bit signed SIC representation
inline int toSIC24(int value) {
value &= 0xFFFFFF;
if (value & 0x800000) {
value -= 0x1000000;
}
return value;
}
inline int setCC(int sw, int cc) {
sw &= ~CC_MASK;
sw |= (cc & CC_MASK);
return sw;
}
inline int sic_comp(int a, int b, int sw) {
int sa = toSIC24(a);
int sb = toSIC24(b);
int cc;
if (sa < sb) {
cc = CC_LT;
} else if (sa == sb) {
cc = CC_EQ;
} else {
cc = CC_GT;
}
return setCC(sw, cc);
}
inline int getCC(int sw) {
return sw & CC_MASK;
}
#endif // MACHINE_H