public void SBC_A_rTest()
{
PrivateObject z = new PrivateObject(new Z80(new Memory48K()));
Z80_Accessor target = new Z80_Accessor(z);
target.A = 0x16;
target.Set(Flag.Carry);
target.Set16BitRegisters(2, 0x5433);
target.Memory[0x5433] = 0x05;
target.SBC_A_r(6);
Assert.IsTrue(target.A == 0x10, "Error: SBC A r");
}