private void WriteByteSequence(IC6502 cpu, ushort offset, params byte[] bytes)
{
for (ushort i = offset; i < (bytes.Length + offset); i++)
{
cpu.Memory[i] = bytes[i - offset];
}
}
protected void SetFlag(IC6502 cpu, StatusFlags flag, Func <bool> predicate)
{
if (predicate())
{
cpu.State.SetFlag((byte)flag);
}
else
{
cpu.State.ClearFlag((byte)flag);
}
}
public void C6502_Execute_STY_Absolute()
{
// Store value of Y (0xFF) in #$DEAD.
IC6502 c = CreateTestCPU();
c.Memory[0x00] = 0xA0;
c.Memory[0x01] = 0xFF;
c.Memory[0x02] = 0x8C;
c.Memory[0x03] = 0xAD;
c.Memory[0x04] = 0xDE;
c.Step(2);
Assert.AreEqual(c.State.RegY, 0xFF, "Loading value of X (0xFF) into memory @ address 0xDEAD.");
}
public void C6502_Execute_STA_Absolute()
{
// Store value of A (0xFF) in #$DEAD.
IC6502 c = CreateTestCPU();
c.Memory[0x00] = 0xA9;
c.Memory[0x01] = 0xFF;
c.Memory[0x02] = 0x8D; // lol smiley face.
c.Memory[0x03] = 0xAD;
c.Memory[0x04] = 0xDE;
c.Step(2);
Assert.AreEqual(c.State.RegA, 0xFF, "Loading value of A (0xFF) into memory @ address 0xDEAD.");
}
protected void SetOverflow(IC6502 cpu, Func <bool> predicate)
{
SetFlag(cpu, StatusFlags.Overflow, predicate);
}
protected void SetCarry(IC6502 cpu, Func <bool> predicate)
{
SetFlag(cpu, StatusFlags.Carry, predicate);
}
protected void SetNegative(IC6502 cpu, Func <bool> predicate)
{
SetFlag(cpu, StatusFlags.Negative, predicate);
}
protected void SetZero(IC6502 cpu, Func <bool> predicate)
{
SetFlag(cpu, StatusFlags.Zero, predicate);
}