public void DEC_L_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x2E, 0x43, // LD L,43H
0x2D // DEC L
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "L, F");
m.ShouldKeepMemory();
m.ShouldKeepCFlag();
regs.NFlag.ShouldBeTrue();
regs.L.ShouldBe((byte)0x42);
regs.PC.ShouldBe((ushort)0x0003);
m.Cpu.Tacts.ShouldBe(11L);
}
public void CPL_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x3E, 0x81, // LD A,81H
0x2F // CPL
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "A, F");
m.ShouldKeepMemory();
m.ShouldKeepSFlag();
m.ShouldKeepZFlag();
m.ShouldKeepPVFlag();
m.ShouldKeepCFlag();
regs.HFlag.ShouldBeTrue();
regs.NFlag.ShouldBeTrue();
regs.A.ShouldBe((byte)0x7E);
regs.PC.ShouldBe((ushort)0x0003);
m.Cpu.Tacts.ShouldBe(11L);
}
public void INC_H_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x26, 0x43, // LD H,43H
0x24 // INC H
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "H, F");
m.ShouldKeepMemory();
m.ShouldKeepCFlag();
regs.NFlag.ShouldBeFalse();
regs.H.ShouldBe((byte)0x44);
regs.PC.ShouldBe((ushort)0x0003);
m.Cpu.Tacts.ShouldBe(11L);
}