private void DisassembleDDCBandFDCBOpcodesCorrectly()
{
var fakeBus = A.Fake <IBus>();
var ram = HexFileReader.Read("../../../HexFiles/TestDDCBandFDCB.hex");
var expectedDisassembly = new Dictionary <ushort, string>
{
{ 0x8000, "RL (IX+2)" },
{ 0x8004, "RL (IY-3)" },
};
A.CallTo(() => fakeBus.Read(A <ushort> ._, A <bool> ._))
.ReturnsLazily((ushort addr, bool ro) => ram[addr]);
var cpu = new Z80()
{
A = 0x00, PC = 0x8000
};
cpu.ConnectToBus(fakeBus);
var disassembledCode = cpu.Disassemble(0x8000, 0x8007);
Assert.Equal(expectedDisassembly, disassembledCode);
}
private void DisassembleMultiplicationHexFileCorrectly()
{
var fakeBus = A.Fake <IBus>();
var ram = HexFileReader.Read("../../../HexFiles/Multiplication.hex");
var expectedDisassembly = new Dictionary <ushort, string>
{
{ 0x8000, "LD BC,&0015" },
{ 0x8003, "LD B,&08" },
{ 0x8005, "LD DE,&002A" },
{ 0x8008, "LD D,&00" },
{ 0x800A, "LD HL,&0000" },
{ 0x800D, "SRL C" },
{ 0x800F, "JR C,$+3" },
{ 0x8011, "ADD HL,DE" },
{ 0x8012, "SLA E" },
{ 0x8014, "RL D" },
{ 0x8016, "DEC B" },
{ 0x8017, "JP NZ,&800D" },
};
A.CallTo(() => fakeBus.Read(A <ushort> ._, A <bool> ._))
.ReturnsLazily((ushort addr, bool ro) => ram[addr]);
var cpu = new Z80()
{
A = 0x00, PC = 0x8000
};
cpu.ConnectToBus(fakeBus);
var disassembledCode = cpu.Disassemble(0x8000, 0x8017);
Assert.Equal(expectedDisassembly, disassembledCode);
}
private void DisassembleArithmetic1HexFileCorrectly()
{
var fakeBus = A.Fake <IBus>();
var expectedDisassembly = new Dictionary <ushort, string>
{
{ 0x0080, "LD A,&05" },
{ 0x0082, "LD B,&0A" },
{ 0x0084, "ADD A,B" },
{ 0x0085, "ADD A,A" },
{ 0x0086, "LD C,&0F" },
{ 0x0088, "SUB A,C" },
{ 0x0089, "LD H,&08" },
{ 0x008B, "LD L,&FF" },
{ 0x008D, "LD (HL),A" },
{ 0x008E, "NOP" },
};
var ram = HexFileReader.Read("../../../HexFiles/Arithmetic1.hex");
A.CallTo(() => fakeBus.Read(A <ushort> ._, A <bool> ._))
.ReturnsLazily((ushort addr, bool ro) => ram[addr]);
var cpu = new Z80()
{
A = 0x00, PC = 0x0080
};
cpu.ConnectToBus(fakeBus);
var disassembledCode = cpu.Disassemble(0x0080, 0x008E);
Assert.Equal(expectedDisassembly, disassembledCode);
}
private void ExecuteArithmeticTestRoutine1Successfully()
{
var fakeBus = A.Fake <IBus>();
//` Arithmetic Test Routine #1 - 10 instructions
//` Filename: Arithmetic1.hex
//`
//` 0080 .ORG 0080h
//`
//` 0080 3E 05 LD A,05h
//` 0082 06 0A LD B,0Ah
//` 0084 80 ADD A,B
//` 0085 87 ADD A,A
//` 0086 0E 0F LD C,0Fh
//` 0088 91 SUB C
//` 0089 26 08 LD H,08h
//` 008B 2E FF LD L,0FFh
//` 008D 77 LD (HL),A
//` 008E 00 NOP
var ram = HexFileReader.Read("../../../HexFiles/Arithmetic1.hex");
A.CallTo(() => fakeBus.Read(A <ushort> ._, A <bool> ._))
.ReturnsLazily((ushort addr, bool ro) => ram[addr]);
A.CallTo(() => fakeBus.Write(A <ushort> ._, A <byte> ._))
.Invokes((ushort addr, byte data) => UpdateMemory(addr, data));
var cpu = new Z80()
{
A = 0x00, B = 0x00, C = 0x00, H = 0x00, L = 0x00, PC = 0x0080
};
cpu.ConnectToBus(fakeBus);
// Run 10 instructions
for (int i = 0; i < 10; i++)
{
cpu.Step();
Debug.WriteLine($"A = {cpu.A} B = {cpu.B} C = {cpu.C} H = {cpu.H} L = {cpu.L}");
}
Assert.Equal(0x0F, ram[0x08FF]);
void UpdateMemory(ushort addr, byte data)
{
ram[addr] = data;
}
}
private void ReadSimpleHexFileWithOnlySingleDataRecord()
{
var fakeBus = A.Fake <IBus>();
// Routine #1 - 58 T-Cycles
// .ORG 0080h
//
// LD A,05h
// LD B,0Ah
// ADD A, B
// ADD A, A
// LD C,0Fh
// SUB C
// LD H,08h
// LD L,0FFh
// LD(HL),A
// NOP
var ram = HexFileReader.Read("../../../HexFiles/Arithmetic1.hex");
A.CallTo(() => fakeBus.Read(A <ushort> ._, A <bool> ._))
.ReturnsLazily((ushort addr, bool ro) => ram[addr]);
A.CallTo(() => fakeBus.Write(A <ushort> ._, A <byte> ._))
.Invokes((ushort addr, byte data) => UpdateMemory(addr, data));
var cpu = new Z80()
{
A = 0x00, B = 0x00, C = 0x00, H = 0x00, L = 0x00, PC = 0x0080
};
cpu.ConnectToBus(fakeBus);
for (int i = 0; i < 10; i++)
{
cpu.Step();
}
Assert.Equal(0x0F, ram[0x08FF]);
void UpdateMemory(ushort addr, byte data)
{
ram[addr] = data;
}
}
private void ExecuteEightBitMultiplicationRoutineSuccessfully()
{
var fakeBus = A.Fake <IBus>();
//` Arithmetic Test Routine #2
//` Filename: Multiplication.hex
//`
//` 8000 .ORG 8000h
//`
//`8000 01 15 00 LD BC,21
//`8003 06 08 LD B,8
//`8005 11 2A 00 LD DE,42
//`8008 16 00 LD D,0
//`800A 21 00 00 LD HL,0
//`800D CB 39 MULTI: SRL C; LSB in Carry Flag
//`800F 30 01 JR NC, NOADD
//`8011 19 ADD HL, DE
//`8012 CB 23 NOADD: SLA E
//`8014 CB 12 RL D
//`8016 05 DEC B
//`8017 C2 0D 80 JP NZ, MULTI
var ram = HexFileReader.Read("../../../HexFiles/Multiplication.hex");
A.CallTo(() => fakeBus.Read(A <ushort> ._, A <bool> ._))
.ReturnsLazily((ushort addr, bool ro) => ram[addr]);
var cpu = new Z80()
{
A = 0x00, B = 0x00, C = 0x00, H = 0x00, L = 0x00, PC = 0x8000
};
cpu.ConnectToBus(fakeBus);
while (cpu.PC < 0x8020)
{
cpu.Step();
}
Assert.Equal(0x0372, cpu.HL);
}