public void Tick()
{
MainBusComponent mock0 = NSubstitute.Substitute.ForPartsOf <StubMainBusComponent>(bus);
MainBusComponent mock1 = NSubstitute.Substitute.ForPartsOf <StubMainBusComponent>(bus);
MainBusComponent mock2 = NSubstitute.Substitute.ForPartsOf <StubMainBusComponent>(bus);
Assert.AreEqual(3, bus.components.Count);
bus.tick();
Received.InOrder(() =>
{
mock0.clockRise();
mock1.clockRise();
mock2.clockRise();
mock0.clockFall();
mock1.clockFall();
mock2.clockFall();
});
}
public void VonNeumannLoop()
{
//TODO: Add interrupt Capabilities here somewhere
//The processor should complete a single step of the loop in a clock pulse
ram.store(add_addi_bin, 0, (ulong)add_addi_bin.Length, 0);
// Step 1: Fetch Instruction
// Step 2: Decode Instruction
// Step 3: Read Source Operands [This step may include interaction with the Main Bus]
// Step 3.up: put command and address on the bus
// Step 3.down: pull the data off the bus and clear it
// Step 4: Execute
// Step 5: Write Destination Operand
// Step 6: Move PC to next position +4 or jump location
Assert.AreEqual(Kore.CPU.Cycle.Off, cpu.state);
cpu.turnOn();
Assert.AreEqual(Kore.CPU.Cycle.Init, cpu.state);
bus.tick();
for (int i = 1; i <= 100; i++)
{
Assert.AreEqual(Kore.CPU.Cycle.Fetch, cpu.state);
bus.tick();
Assert.AreEqual(Kore.CPU.Cycle.Decode, cpu.state);
bus.tick();
Assert.AreEqual(Kore.CPU.Cycle.Read, cpu.state);
bus.tick();
Assert.AreEqual(Kore.CPU.Cycle.Exec, cpu.state);
bus.tick();
Assert.AreEqual(Kore.CPU.Cycle.Write, cpu.state);
bus.tick();
Assert.AreEqual(Kore.CPU.Cycle.MovPC, cpu.state);
bus.tick();
Assert.AreEqual(i * 4, cpu.registers.getR(Register.PC));
}
}