Examples of com.loomcom.symon.Cpu

com.loomcom.symon.Cpu
This class provides a simulation of the MOS 6502 CPU's state machine. A simple interface allows this 6502 to read and write to a simulated bus, and exposes some of the internal state for inspection and debugging.

    private       Memory rom;




    public SymonMachine() throws Exception {
        this.bus = new Bus(BUS_BOTTOM, BUS_TOP);
        this.cpu = new Cpu();
        this.ram = new Memory(MEMORY_BASE, MEMORY_BASE + MEMORY_SIZE - 1, false);
        this.pia = new Via6522(PIA_BASE);
        this.acia = new Acia6551(ACIA_BASE);
        this.crtc = new Crtc(CRTC_BASE, ram);

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    private       Memory rom;




    public MulticompMachine() throws Exception {
        this.bus = new Bus(BUS_BOTTOM, BUS_TOP);
        this.cpu = new Cpu();
        this.ram = new Memory(MEMORY_BASE, MEMORY_BASE + MEMORY_SIZE - 1, false);
        this.acia = new Acia6850(ACIA_BASE);
        this.acia.setBaudRate(0);
        this.sdController = new SdController(SD_BASE);

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    private final Cpu cpu;


    public SimpleMachine() throws MemoryRangeException {
        this.bus = new Bus(BUS_BOTTOM, BUS_TOP);
        this.ram = new Memory(BUS_BOTTOM, BUS_TOP, false);
        this.cpu = new Cpu();


        bus.addCpu(cpu);
        bus.addDevice(ram);
    }

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    /**
     * Update the display based on the current state of the CPU.
     */
    public void updateState() {
        Cpu cpu = machine.getCpu();
        Cpu.CpuState cpuState = cpu.getCpuState();


        // Update the Processor Status Flag display
        int status = cpuState.getStatusFlag();


        carryFlagLabel.setIcon(iconForFlag(status, 0));
        zeroFlagLabel.setIcon(iconForFlag(status, 1));
        irqDisableFlagLabel.setIcon(iconForFlag(status, 2));
        decimalModeFlagLabel.setIcon(iconForFlag(status, 3));
        breakFlagLabel.setIcon(iconForFlag(status, 4));
        overflowFlagLabel.setIcon(iconForFlag(status, 6));
        negativeFlagLabel.setIcon(iconForFlag(status, 7));


        // Update the register and address displays
        opcodeField.setText(cpu.getCpuState().disassembleOp());
        pcField.setText(cpu.getProgramCounterStatus());
        spField.setText(cpu.getStackPointerStatus());
        aField.setText(cpu.getAccumulatorStatus());
        xField.setText(cpu.getXRegisterStatus());
        yField.setText(cpu.getYRegisterStatus());


        repaint();
    }

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Related Classes of com.loomcom.symon.Cpu

com.loomcom.symon.machines.MulticompMachine

com.loomcom.symon.machines.SimpleMachine

com.loomcom.symon.machines.SymonMachine

com.loomcom.symon.ui.StatusPanel

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