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120 lines
3.0 KiB
Plaintext
120 lines
3.0 KiB
Plaintext
//
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// Machine.m
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// CLK
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//
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// Created by Thomas Harte on 29/06/2015.
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// Copyright © 2015 Thomas Harte. All rights reserved.
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//
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#import "TestMachine6502.h"
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#include <stdint.h>
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#include "6502AllRAM.hpp"
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const uint8_t CSTestMachine6502JamOpcode = CPU::MOS6502::JamOpcode;
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#pragma mark - C++ jam handler
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class MachineJamHandler: public CPU::MOS6502::AllRAMProcessor::JamHandler {
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public:
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MachineJamHandler(CSTestMachine6502 *targetMachine) : _targetMachine(targetMachine) {}
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void processor_did_jam(CPU::MOS6502::AllRAMProcessor::Processor *processor, uint16_t address) override {
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[_targetMachine.jamHandler testMachine:_targetMachine didJamAtAddress:address];
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}
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private:
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CSTestMachine6502 *_targetMachine;
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};
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#pragma mark - Register enum map
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static CPU::MOS6502::Register registerForRegister(CSTestMachine6502Register reg) {
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switch (reg) {
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case CSTestMachine6502RegisterProgramCounter: return CPU::MOS6502::Register::ProgramCounter;
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case CSTestMachine6502RegisterLastOperationAddress: return CPU::MOS6502::Register::LastOperationAddress;
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case CSTestMachine6502RegisterFlags: return CPU::MOS6502::Register::Flags;
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case CSTestMachine6502RegisterA: return CPU::MOS6502::Register::A;
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case CSTestMachine6502RegisterX: return CPU::MOS6502::Register::X;
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case CSTestMachine6502RegisterY: return CPU::MOS6502::Register::Y;
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case CSTestMachine6502RegisterStackPointer: return CPU::MOS6502::Register::S;
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}
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}
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#pragma mark - Test class
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@implementation CSTestMachine6502 {
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CPU::MOS6502::AllRAMProcessor _processor;
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MachineJamHandler *_cppJamHandler;
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}
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#pragma mark - Lifecycle
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- (instancetype)init {
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self = [super init];
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if(self) {
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_cppJamHandler = new MachineJamHandler(self);
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_processor.set_jam_handler(_cppJamHandler);
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}
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return self;
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}
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- (void)dealloc {
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delete _cppJamHandler;
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}
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#pragma mark - Accessors
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- (uint8_t)valueForAddress:(uint16_t)address {
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uint8_t value;
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_processor.perform_bus_operation(CPU::MOS6502::BusOperation::Read, address, &value);
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return value;
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}
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- (void)setValue:(uint8_t)value forAddress:(uint16_t)address {
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_processor.perform_bus_operation(CPU::MOS6502::BusOperation::Write, address, &value);
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}
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- (void)setValue:(uint16_t)value forRegister:(CSTestMachine6502Register)reg {
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_processor.set_value_of_register(registerForRegister(reg), value);
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}
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- (uint16_t)valueForRegister:(CSTestMachine6502Register)reg {
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return _processor.get_value_of_register(registerForRegister(reg));
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}
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- (void)setData:(NSData *)data atAddress:(uint16_t)startAddress {
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_processor.set_data_at_address(startAddress, data.length, (const uint8_t *)data.bytes);
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}
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- (BOOL)isJammed {
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return _processor.is_jammed();
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}
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- (uint32_t)timestamp {
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return _processor.get_timestamp();
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}
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- (void)setIrqLine:(BOOL)irqLine {
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_irqLine = irqLine;
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_processor.set_irq_line(irqLine);
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}
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- (void)setNmiLine:(BOOL)nmiLine {
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_nmiLine = nmiLine;
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_processor.set_nmi_line(nmiLine);
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}
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#pragma mark - Actions
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- (void)returnFromSubroutine {
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_processor.return_from_subroutine();
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}
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- (void)runForNumberOfCycles:(int)cycles {
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_processor.run_for_cycles(cycles);
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}
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@end
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