public void CPDR_WorksWithByteFound()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0xED, 0xB9 // CPDR
});
var regs = m.Cpu.Registers;
regs.BC = 0x0003;
regs.HL = 0x1002;
regs.A = 0xA6;
m.Memory[regs.HL - 2] = 0xA5;
m.Memory[regs.HL - 1] = 0xA6;
m.Memory[regs.HL] = 0xA7;
// --- Act
m.Run();
// --- Assert
regs.BC.ShouldBe((ushort)0x0001);
regs.HL.ShouldBe((ushort)0x1000);
regs.ZFlag.ShouldBeTrue();
regs.PFlag.ShouldBeTrue();
regs.HFlag.ShouldBeFalse();
regs.NFlag.ShouldBeTrue();
regs.CFlag.ShouldBeFalse();
m.ShouldKeepRegisters(except: "F, BC, HL");
m.ShouldKeepMemory();
regs.PC.ShouldBe((ushort)0x0002);
m.Cpu.Tacts.ShouldBe(37L);
}
public void INDR_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0xED, 0xBA // INDR
});
var regs = m.Cpu.Registers;
regs.BC = 0x03CC;
regs.HL = 0x1002;
m.IoInputSequence.Add(0x69);
m.IoInputSequence.Add(0x6A);
m.IoInputSequence.Add(0x6B);
// --- Act
m.Run();
// --- Assert
m.Memory[0x1000].ShouldBe((byte)0x6B);
m.Memory[0x1001].ShouldBe((byte)0x6A);
m.Memory[0x1002].ShouldBe((byte)0x69);
regs.B.ShouldBe((byte)0x00);
regs.C.ShouldBe((byte)0xCC);
regs.HL.ShouldBe((ushort)0x0FFF);
regs.ZFlag.ShouldBeTrue();
regs.NFlag.ShouldBeTrue();
regs.CFlag.ShouldBeFalse();
m.ShouldKeepRegisters(except: "F, BC, HL");
m.ShouldKeepMemory(except: "1000-1002");
regs.PC.ShouldBe((ushort)0x0002);
m.Cpu.Tacts.ShouldBe(58L);
}
public void OUTD_WorksWithZeroedCounter()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.OneInstruction);
m.InitCode(new byte[]
{
0xED, 0xAB // OUTD
});
var regs = m.Cpu.Registers;
regs.BC = 0x01CC;
regs.HL = 0x1000;
m.Memory[regs.HL] = 0x29;
// --- Act
m.Run();
// --- Assert
regs.B.ShouldBe((byte)0x00);
regs.C.ShouldBe((byte)0xCC);
regs.HL.ShouldBe((ushort)0x0FFF);
regs.ZFlag.ShouldBeTrue();
regs.NFlag.ShouldBeTrue();
regs.CFlag.ShouldBeTrue();
m.ShouldKeepRegisters(except: "F, BC, HL");
m.ShouldKeepMemory(except: "1000");
m.IoAccessLog.Count.ShouldBe(1);
m.IoAccessLog[0].Address.ShouldBe((ushort)0x00CC);
m.IoAccessLog[0].Value.ShouldBe((byte)0x29);
m.IoAccessLog[0].IsOutput.ShouldBeTrue();
regs.PC.ShouldBe((ushort)0x0002);
m.Cpu.Tacts.ShouldBe(16L);
}
public void LD_SP_NN_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.OneInstruction);
m.InitCode(new byte[]
{
0x31, 0x26, 0xA9 // LD SP,A926H
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "SP");
m.ShouldKeepMemory();
regs.SP.ShouldBe((ushort)0xA926);
regs.PC.ShouldBe((ushort)0x0003);
m.Cpu.Tacts.ShouldBe(10L);
}
public void DJNX_E_WorksWithJump()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x06, 0x02, // LD B,02H
0x10, 0x02 // DJNZ 02H
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "B");
m.ShouldKeepMemory();
regs.PC.ShouldBe((ushort)0x0006);
m.Cpu.Tacts.ShouldBe(20L);
}
public void JR_C_E_WorksWithJump()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x37, // SCF
0x38, 0x02 // JR C,02H
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "F");
m.ShouldKeepMemory();
regs.PC.ShouldBe((ushort)0x0005);
m.Cpu.Tacts.ShouldBe(16L);
}
public void LD_L_N_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.OneInstruction);
m.InitCode(new byte[]
{
0x3E, 0x26 // LD A,26H
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "A");
m.ShouldKeepMemory();
regs.A.ShouldBe((byte)0x26);
regs.PC.ShouldBe((ushort)0x0002);
m.Cpu.Tacts.ShouldBe(7L);
}
public void LDI_WorksWithZeroedCounter()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.OneInstruction);
m.InitCode(new byte[]
{
0xED, 0xA0 // LDI
});
var regs = m.Cpu.Registers;
regs.BC = 0x0001;
regs.HL = 0x1000;
regs.DE = 0x1001;
m.Memory[regs.HL] = 0xA5;
m.Memory[regs.DE] = 0x11;
// --- Act
m.Run();
// --- Assert
m.Memory[0x1001].ShouldBe((byte)0xA5);
regs.BC.ShouldBe((ushort)0x0000);
regs.HL.ShouldBe((ushort)0x1001);
regs.DE.ShouldBe((ushort)0x1002);
regs.PFlag.ShouldBeFalse();
regs.HFlag.ShouldBeFalse();
regs.NFlag.ShouldBeFalse();
regs.CFlag.ShouldBeFalse();
m.ShouldKeepRegisters(except: "F, BC, DE, HL");
m.ShouldKeepMemory(except: "1001");
regs.PC.ShouldBe((ushort)0x0002);
m.Cpu.Tacts.ShouldBe(16L);
}
public void CPI_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.OneInstruction);
m.InitCode(new byte[]
{
0xED, 0xA1 // CPI
});
var regs = m.Cpu.Registers;
regs.BC = 0x0010;
regs.HL = 0x1000;
regs.A = 0x11;
m.Memory[regs.HL] = 0xA5;
// --- Act
m.Run();
// --- Assert
regs.BC.ShouldBe((ushort)0x000F);
regs.HL.ShouldBe((ushort)0x1001);
regs.ZFlag.ShouldBeFalse();
regs.PFlag.ShouldBeTrue();
regs.HFlag.ShouldBeTrue();
regs.NFlag.ShouldBeTrue();
regs.CFlag.ShouldBeFalse();
m.ShouldKeepRegisters(except: "F, BC, HL");
m.ShouldKeepMemory();
regs.PC.ShouldBe((ushort)0x0002);
m.Cpu.Tacts.ShouldBe(16L);
}
public void CCF_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x37, // SCF
0x3F // CCF
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "F");
m.ShouldKeepMemory();
regs.CFlag.ShouldBeFalse();
regs.PC.ShouldBe((ushort)0x0002);
m.Cpu.Tacts.ShouldBe(8L);
}
public void DEC_SP_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x31, 0x26, 0xA9, // LD SP,A926H
0x3B // DEC SP
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "SP");
m.ShouldKeepMemory();
regs.SP.ShouldBe((ushort)0xA925);
regs.PC.ShouldBe((ushort)0x0004);
m.Cpu.Tacts.ShouldBe(16L);
}
public void LD_A_NNi_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x3A, 0x00, 0x10 // LD A,(1000H)
});
m.Memory[0x1000] = 0x34;
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "A");
m.ShouldKeepMemory();
regs.A.ShouldBe((byte)0x34);
regs.PC.ShouldBe((ushort)0x0003);
m.Cpu.Tacts.ShouldBe(13L);
}
public void LD_HLi_N_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x21, 0x00, 0x10, // LD HL,1000H
0x36, 0x56 // LD (HL),56H
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "HL, F");
m.ShouldKeepMemory(except: "1000");
m.Memory[0x1000].ShouldBe((byte)0x56);
regs.PC.ShouldBe((ushort)0x0005);
m.Cpu.Tacts.ShouldBe(20L);
}
public void LD_A_BCi_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x01, 0x03, 0x00, // LD BC,0003H
0x0A // LD A,(BC)
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "BC, A");
m.ShouldKeepMemory();
regs.A.ShouldBe((byte)0x0A);
regs.PC.ShouldBe((ushort)0x0004);
m.Cpu.Tacts.ShouldBe(17L);
}
public void INC_BC_WorksAsExpected2()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x01, 0xFF, 0xFF, // LD BC,FFFFH
0x03 // INC BC
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "BC");
m.ShouldKeepMemory();
regs.BC.ShouldBe((ushort)0x0000);
regs.PC.ShouldBe((ushort)0x0004);
m.Cpu.Tacts.ShouldBe(16L);
}
public void CPD_WorksWithByteFoundAndZeroedCounter()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.OneInstruction);
m.InitCode(new byte[]
{
0xED, 0xA9 // CPD
});
var regs = m.Cpu.Registers;
regs.BC = 0x0001;
regs.HL = 0x1000;
regs.A = 0xA5;
m.Memory[regs.HL] = 0xA5;
// --- Act
m.Run();
// --- Assert
regs.BC.ShouldBe((ushort)0x0000);
regs.HL.ShouldBe((ushort)0x0FFF);
regs.ZFlag.ShouldBeTrue();
regs.PFlag.ShouldBeFalse();
regs.HFlag.ShouldBeFalse();
regs.NFlag.ShouldBeTrue();
regs.CFlag.ShouldBeFalse();
m.ShouldKeepRegisters(except: "F, BC, HL");
m.ShouldKeepMemory();
regs.PC.ShouldBe((ushort)0x0002);
m.Cpu.Tacts.ShouldBe(16L);
}
public void JP_HLi_WorksAsExpected()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x21, 0x00, 0x10, // LD HL, 1000H
0xE9 // JP (HL)
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
regs.PC.ShouldBe((ushort)0x1000);
m.ShouldKeepRegisters(except: "HL");
m.ShouldKeepMemory();
m.Cpu.Tacts.ShouldBe(14L);
}
public void INC_DE_WorksAsExpected1()
{
// --- Arrange
var m = new Z80TestMachine(RunMode.UntilEnd);
m.InitCode(new byte[]
{
0x11, 0x26, 0xA9, // LD DE,A926H
0x13 // INC DE
});
// --- Act
m.Run();
// --- Assert
var regs = m.Cpu.Registers;
m.ShouldKeepRegisters(except: "DE");
m.ShouldKeepMemory();
regs.DE.ShouldBe((ushort)0xA927);
regs.PC.ShouldBe((ushort)0x0004);
m.Cpu.Tacts.ShouldBe(16L);
}
