public void TestRegisterPC()
{
ushort value;
byte[] blankMemory = new byte[65536];
Lock cpuLock = new AlwaysOpenLock();
CPU6510 cpu = new CPU6510(blankMemory, cpuLock);
value = 0x00;
cpu.PC = value;
Assert.AreEqual(value, cpu.PC);
// all bits in PCL
value = 0xff;
cpu.PC = value;
Assert.AreEqual(value, cpu.PC);
// overflow into PCH
value = 0x0100;
cpu.PC = value;
Assert.AreEqual(value, cpu.PC);
// do some random tests of the register
Random rnd = new Random();
for (int i = NUMBER_TEST_RUNS; i > 0; i--)
{
value = (ushort)rnd.Next(0x00, 0xffff);
cpu.PC = value;
Assert.AreEqual(value, cpu.PC);
}
}
public void TestRegisterPCH()
{
byte value, pcl;
byte[] blankMemory = new byte[65536];
Lock cpuLock = new AlwaysOpenLock();
CPU6510 cpu = new CPU6510(blankMemory, cpuLock);
value = 0x00;
cpu.PCH = value;
Assert.AreEqual(value, cpu.PCH);
// all bits set
value = 0xff;
cpu.PCH = value;
Assert.AreEqual(value, cpu.PCH);
// do some random tests of the register
Random rnd = new Random();
for (int i = NUMBER_TEST_RUNS; i > 0; i--)
{
cpu.PC = (ushort)rnd.Next(0x0000, 0xffff);
pcl = cpu.PCL;
value = (byte)rnd.Next(0x00, 0xff);
cpu.PCH = value;
Assert.AreEqual(value, cpu.PCH);
Assert.AreEqual(pcl, cpu.PCL);
}
}
