protected void AssertFlagsSame(CPUConfig initialState, CPUResults stats)
{
Assert.Equal(initialState.Flags.AuxCarry, stats.Flags.AuxCarry);
Assert.Equal(initialState.Flags.Carry, stats.Flags.Carry);
Assert.Equal(initialState.Flags.Parity, stats.Flags.Parity);
Assert.Equal(initialState.Flags.Sign, stats.Flags.Sign);
Assert.Equal(initialState.Flags.Zero, stats.Flags.Zero);
}
protected void AssertFlagsFalse(CPUResults stats)
{
Assert.False(stats.Flags.AuxCarry);
Assert.False(stats.Flags.Carry);
Assert.False(stats.Flags.Parity);
Assert.False(stats.Flags.Sign);
Assert.False(stats.Flags.Zero);
}
protected CPUResults Execute(byte[] memory, CPU cpu)
{
cpu.LoadMemory(memory);
// Record the number of iterations (instructions), CPU cycles, and the address of the
// program counter after each instruction is executed. This allows tests to assert each
// of these values in addition to the CPU state.
var iterations = 0;
var cycles = 0;
var pcAddresses = new List <UInt16>();
while (!cpu.Finished)
{
// Ensure we don't have a run away program.
if (iterations > 100)
{
throw new Exception("More than 100 iterations occurred.");
}
pcAddresses.Add(cpu.ProgramCounter);
cycles += cpu.Step();
iterations++;
}
// Return the state of the CPU so tests can do verification.
var results = new CPUResults()
{
Iterations = iterations,
Cycles = cycles,
ProgramCounterAddresses = pcAddresses,
Memory = cpu.Memory,
Registers = cpu.Registers,
Flags = cpu.Flags,
ProgramCounter = cpu.ProgramCounter,
StackPointer = cpu.StackPointer,
InterruptsEnabled = cpu.InterruptsEnabled,
};
return(results);
}