diff options
| author | Ian C <ianc@noddybox.co.uk> | 2012-01-01 14:21:26 +0000 |
|---|---|---|
| committer | Ian C <ianc@noddybox.co.uk> | 2012-01-01 14:21:26 +0000 |
| commit | 2b8d49726e448e22b5055da5ba4395d043030984 (patch) | |
| tree | 84df14c05d10d11e293fb74d50364664124b844e /Noddybox.Emulation.EightBit.Z80 | |
| parent | 4a14a990665f766e349b9027dbf980bc39f395f6 (diff) | |
Moved sources to help in compilation for other platforms and isolated phone projects.
Diffstat (limited to 'Noddybox.Emulation.EightBit.Z80')
4 files changed, 0 insertions, 1034 deletions
diff --git a/Noddybox.Emulation.EightBit.Z80/Noddybox.Emulation.EightBit.Z80.csproj b/Noddybox.Emulation.EightBit.Z80/Noddybox.Emulation.EightBit.Z80.csproj deleted file mode 100644 index 03c8010..0000000 --- a/Noddybox.Emulation.EightBit.Z80/Noddybox.Emulation.EightBit.Z80.csproj +++ /dev/null @@ -1,76 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
- <PropertyGroup>
- <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
- <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
- <ProductVersion>10.0.20506</ProductVersion>
- <SchemaVersion>2.0</SchemaVersion>
- <ProjectGuid>{7F257886-40D3-4E2A-BA9C-C5FEE93C08E9}</ProjectGuid>
- <ProjectTypeGuids>{C089C8C0-30E0-4E22-80C0-CE093F111A43};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>
- <OutputType>Library</OutputType>
- <AppDesignerFolder>Properties</AppDesignerFolder>
- <RootNamespace>Noddybox.Emulation.EightBit.Z80</RootNamespace>
- <AssemblyName>Noddybox.Emulation.EightBit.Z80</AssemblyName>
- <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
- <SilverlightVersion>$(TargetFrameworkVersion)</SilverlightVersion>
- <TargetFrameworkProfile>WindowsPhone71</TargetFrameworkProfile>
- <TargetFrameworkIdentifier>Silverlight</TargetFrameworkIdentifier>
- <SilverlightApplication>false</SilverlightApplication>
- <ValidateXaml>true</ValidateXaml>
- <ThrowErrorsInValidation>true</ThrowErrorsInValidation>
- </PropertyGroup>
- <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
- <DebugSymbols>true</DebugSymbols>
- <DebugType>full</DebugType>
- <Optimize>false</Optimize>
- <OutputPath>Bin\Debug</OutputPath>
- <DefineConstants>DEBUG;TRACE;SILVERLIGHT;WINDOWS_PHONE</DefineConstants>
- <NoStdLib>true</NoStdLib>
- <NoConfig>true</NoConfig>
- <ErrorReport>prompt</ErrorReport>
- <WarningLevel>4</WarningLevel>
- </PropertyGroup>
- <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
- <DebugType>pdbonly</DebugType>
- <Optimize>true</Optimize>
- <OutputPath>Bin\Release</OutputPath>
- <DefineConstants>TRACE;SILVERLIGHT;WINDOWS_PHONE</DefineConstants>
- <NoStdLib>true</NoStdLib>
- <NoConfig>true</NoConfig>
- <ErrorReport>prompt</ErrorReport>
- <WarningLevel>4</WarningLevel>
- </PropertyGroup>
- <ItemGroup>
- <Reference Include="System.Windows" />
- <Reference Include="system" />
- <Reference Include="System.Core" />
- <Reference Include="System.Xml" />
- <Reference Include="System.Net" />
- <Reference Include="mscorlib.extensions" />
- </ItemGroup>
- <ItemGroup>
- <Compile Include="Z80Cpu.cs" />
- <Compile Include="Properties\AssemblyInfo.cs" />
- <Compile Include="Z80CpuBaseOpcodes.cs" />
- </ItemGroup>
- <ItemGroup>
- <ProjectReference Include="..\Noddybox.Emulation.EightBit\Noddybox.Emulation.EightBit.csproj">
- <Project>{ADC7A871-4DED-4A92-A447-2D784AB60FAF}</Project>
- <Name>Noddybox.Emulation.EightBit</Name>
- </ProjectReference>
- <ProjectReference Include="..\Noddybox.Emulation\Noddybox.Emulation.csproj">
- <Project>{A2478066-4DFD-4042-BF98-963922DC97F8}</Project>
- <Name>Noddybox.Emulation</Name>
- </ProjectReference>
- </ItemGroup>
- <Import Project="$(MSBuildExtensionsPath)\Microsoft\Silverlight for Phone\$(TargetFrameworkVersion)\Microsoft.Silverlight.$(TargetFrameworkProfile).Overrides.targets" />
- <Import Project="$(MSBuildExtensionsPath)\Microsoft\Silverlight for Phone\$(TargetFrameworkVersion)\Microsoft.Silverlight.CSharp.targets" />
- <ProjectExtensions />
- <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
- Other similar extension points exist, see Microsoft.Common.targets.
- <Target Name="BeforeBuild">
- </Target>
- <Target Name="AfterBuild">
- </Target>
- -->
-</Project>
\ No newline at end of file diff --git a/Noddybox.Emulation.EightBit.Z80/Properties/AssemblyInfo.cs b/Noddybox.Emulation.EightBit.Z80/Properties/AssemblyInfo.cs deleted file mode 100644 index 52b6054..0000000 --- a/Noddybox.Emulation.EightBit.Z80/Properties/AssemblyInfo.cs +++ /dev/null @@ -1,37 +0,0 @@ -using System.Reflection;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-using System.Resources;
-
-// General Information about an assembly is controlled through the following
-// set of attributes. Change these attribute values to modify the information
-// associated with an assembly.
-[assembly: AssemblyTitle("Noddybox.Emulation.EightBit.Z80")]
-[assembly: AssemblyDescription("")]
-[assembly: AssemblyConfiguration("")]
-[assembly: AssemblyCompany("")]
-[assembly: AssemblyProduct("Noddybox.Emulation.EightBit.Z80")]
-[assembly: AssemblyCopyright("Copyright © 2011")]
-[assembly: AssemblyTrademark("")]
-[assembly: AssemblyCulture("")]
-
-// Setting ComVisible to false makes the types in this assembly not visible
-// to COM components. If you need to access a type in this assembly from
-// COM, set the ComVisible attribute to true on that type.
-[assembly: ComVisible(false)]
-
-// The following GUID is for the ID of the typelib if this project is exposed to COM
-[assembly: Guid("3b53cbb7-adc4-4405-ba85-4b345a46ed11")]
-
-// Version information for an assembly consists of the following four values:
-//
-// Major Version
-// Minor Version
-// Build Number
-// Revision
-//
-// You can specify all the values or you can default the Revision and Build Numbers
-// by using the '*' as shown below:
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
-[assembly: NeutralResourcesLanguageAttribute("en-US")]
diff --git a/Noddybox.Emulation.EightBit.Z80/Z80Cpu.cs b/Noddybox.Emulation.EightBit.Z80/Z80Cpu.cs deleted file mode 100644 index 5c40854..0000000 --- a/Noddybox.Emulation.EightBit.Z80/Z80Cpu.cs +++ /dev/null @@ -1,226 +0,0 @@ -//
-// Copyright (c) 2012 Ian Cowburn
-//
-using System;
-using System.Net;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Documents;
-using System.Windows.Ink;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Animation;
-using System.Windows.Shapes;
-
-namespace Noddybox.Emulation.EightBit.Z80
-{
- /// <summary>
- /// Provides an implementation of a Zilog Z80 processor.
- /// </summary>
- public partial class Z80Cpu : ICpu
- {
- #region Private types
-
- [Flags]
- private enum Z80Flags
- {
- None = 0x00,
- Carry = 0x01,
- Neg = 0x02,
- PV = 0x04,
- Hidden3 = 0x08,
- HalfCarry = 0x10,
- Hidden5 = 0x20,
- Zero = 0x40,
- Sign = 0x80
- };
-
- #endregion
-
- #region Private data
-
- // Lookup tables
- //
- private Z80Flags[] PSZtable = new Z80Flags[512];
- private Z80Flags[] SZtable = new Z80Flags[512];
- private Z80Flags[] Ptable = new Z80Flags[512];
- private Z80Flags[] Stable = new Z80Flags[512];
- private Z80Flags[] Ztable = new Z80Flags[512];
- private Z80Flags[] H35table = new Z80Flags[256];
-
- // Machine accessors
- //
- private IMemory memory;
- private IDevice device;
- private Clock clock;
-
- // Main registers
- //
- private byte A;
- private Z80Flags F;
- private Register16 BC = new Register16(0);
- private Register16 DE = new Register16(0);
- private Register16 HL = new Register16(0);
- private Register16 IX = new Register16(0);
- private Register16 IY = new Register16(0);
- private ushort SP;
- private ushort PC;
-
- // Alternate registers
- //
- private Register16 AF_ = new Register16(0);
- private Register16 BC_ = new Register16(0);
- private Register16 DE_ = new Register16(0);
- private Register16 HL_ = new Register16(0);
-
- // Auxilliary registers and flags
- //
- private byte I;
- private byte R;
- private bool IFF1;
- private bool IFF2;
- private int IM;
- private bool HALT;
-
- #endregion
-
- #region ICpu Members
-
- public void Initialise(IMemory memory, IDevice device, Clock clock)
- {
- this.memory = memory;
- this.device = device;
- this.clock = clock;
-
- Reset();
- }
-
- public void Reset()
- {
- PC = 0;
- A = 0xff;
- F = (Z80Flags)0xff;
-
- BC.reg = 0xffff;
- DE.reg = 0xffff;
- HL.reg = 0xffff;
- AF_.reg = 0xffff;
- BC_.reg = 0xffff;
- DE_.reg = 0xffff;
- HL_.reg = 0xffff;
-
- IX.reg = 0xffff;
- IY.reg = 0xffff;
-
- SP = 0xffff;
-
- IFF1 = false;
- IFF2 = false;
- IM = 0;
- I = 0;
- R = 0;
- HALT = false;
- }
-
- public void Step()
- {
- // TODO: Single step.
- }
-
- public void Run()
- {
- while(!clock.FrameDone)
- {
- Step();
- }
- }
-
- public void MaskableInterrupt(byte value)
- {
- clock.Add(2);
-
- // TODO: INT
- }
-
- public void NonMaskableInterrupt(byte value)
- {
- clock.Add(2);
-
- // TODO: NMI
- }
-
- #endregion
-
- #region Constructors
-
- public Z80Cpu()
- {
- // Verify runtime
- //
- Register16.Verify();
-
- // Setup lookup tables
- //
- for(int f = 0; f < 256; f++)
- {
- Z80Flags p = Z80Flags.None;
- Z80Flags z = Z80Flags.None;
- Z80Flags s = Z80Flags.None;
- Z80Flags h3 = Z80Flags.None;
- Z80Flags h5 = Z80Flags.None;
-
- int parity = 0;
-
- for(int b=0; b < 8; b++)
- {
- if ((f & (1<<b)) == (1<<b))
- {
- parity++;
- }
- }
-
- if ((parity & 1) == 1)
- {
- p = Z80Flags.PV;
- }
-
- if (f == 0)
- {
- z = Z80Flags.Zero;
- }
-
- if ((f & 0x80) == 0x80)
- {
- s = Z80Flags.Sign;
- }
-
- if ((f & (int)Z80Flags.Hidden3) == (int)Z80Flags.Hidden3)
- {
- h3 = Z80Flags.Hidden3;
- }
-
- if ((f & (int)Z80Flags.Hidden5) == (int)Z80Flags.Hidden5)
- {
- h5 = Z80Flags.Hidden5;
- }
-
- Ptable[f] = p;
- Stable[f] = s;
- Ztable[f] = z;
- SZtable[f] =z | s;
- PSZtable[f] = z | s | p;
- H35table[f] = h3 | h5;
-
- Ptable[f+256] = Ptable[f] | Z80Flags.Carry;
- Stable[f+256] = Stable[f] | Z80Flags.Carry;
- Ztable[f+256] = Ztable[f] | Z80Flags.Carry;
- SZtable[f+256] = SZtable[f] | Z80Flags.Carry;
- PSZtable[f+256] = PSZtable[f] | Z80Flags.Carry;
- }
-
- Reset();
- }
-
- #endregion
- }
-}
diff --git a/Noddybox.Emulation.EightBit.Z80/Z80CpuBaseOpcodes.cs b/Noddybox.Emulation.EightBit.Z80/Z80CpuBaseOpcodes.cs deleted file mode 100644 index 40b31ca..0000000 --- a/Noddybox.Emulation.EightBit.Z80/Z80CpuBaseOpcodes.cs +++ /dev/null @@ -1,695 +0,0 @@ -//
-// Copyright (c) 2012 Ian Cowburn
-//
-using System;
-using System.Net;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Documents;
-using System.Windows.Ink;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Animation;
-using System.Windows.Shapes;
-
-namespace Noddybox.Emulation.EightBit.Z80
-{
- public partial class Z80Cpu
- {
- #region Status register helpers
-
- /// <summary>
- /// Set a flag in the status register.
- /// </summary>
- /// <param name="flag">The flag.</param>
- private void SetFlag(Z80Flags flag)
- {
- F |= flag;
- }
-
- /// <summary>
- /// Clear a flag in the status register.
- /// </summary>
- /// <param name="flag">The flag.</param>
- private void ClearFlag(Z80Flags flag)
- {
- F &= ~flag;
- }
-
- #endregion
-
- #region Stack commands
-
- /// <summary>
- /// Push a value on the stack.
- /// </summary>
- /// <param name="val">The value.</param>
- private void PUSH(ushort val)
- {
- memory.Write(--SP, (byte)(val & 0xff));
- memory.Write(--SP, (byte)(Binary.ShiftRight(val, 8) & 0xff));
- }
-
- /// <summary>
- /// Pop a value from the stack.
- /// </summary>
- /// <returns></returns>
- private ushort POP()
- {
- SP = (ushort)((SP + 2) & 0xffff);
- return (ushort)(memory.Read((ushort)(SP-2)) |
- (memory.Read((ushort)(SP - 1)) >> 8));
- }
-
- #endregion
-
- #region ALU arithmetic and comparison
-
- /// <summary>
- /// Add an 8-bit value to the accumulator without carry.
- /// </summary>
- /// <param name="b">The vakue.</param>
- private void Add8(byte b)
- {
- int w = A + b;
-
- F = SZtable[w] | H35table[w & 0xff];
-
- if (((A ^ w ^ b) & (int)Z80Flags.HalfCarry) == (int)Z80Flags.HalfCarry)
- {
- F |= Z80Flags.HalfCarry;
- }
-
- if (((b ^ A) & (b ^ w) & 0x80) > 0)
- {
- F |= Z80Flags.PV;
- }
-
- A = (byte)(w & 0xff);
- }
-
- /// <summary>
- /// Add an 8-bit value to the accumulator with carry.
- /// </summary>
- /// <param name="b">The vakue.</param>
- private void Adc8(byte b)
- {
- int w = A + b + (int)(F & Z80Flags.Carry);
-
- F = SZtable[w] | H35table[w & 0xff];
-
- if (((A ^ w ^ b) & (int)Z80Flags.HalfCarry) == (int)Z80Flags.HalfCarry)
- {
- F |= Z80Flags.HalfCarry;
- }
-
- if (((b ^ A) & (b ^ w) & 0x80) > 0)
- {
- F |= Z80Flags.PV;
- }
-
- A = (byte)(w & 0xff);
- }
-
- /// <summary>
- /// Subtract an 8-bit value from the accumulator without carry.
- /// </summary>
- /// <param name="b">The vakue.</param>
- private void Sub8(byte b)
- {
- int w = A - b;
-
- if (w < 0)
- {
- w += 0x200;
- }
-
- F = SZtable[w] | H35table[w & 0xff] | Z80Flags.Neg;
-
- if (((A ^ w ^ b) & (int)Z80Flags.HalfCarry) == (int)Z80Flags.HalfCarry)
- {
- F |= Z80Flags.HalfCarry;
- }
-
- if (((b ^ A) & (b ^ w) & 0x80) > 0)
- {
- F |= Z80Flags.PV;
- }
-
- A = (byte)(w & 0xff);
- }
-
- /// <summary>
- /// Compare an 8-bit value with the accumulator.
- /// </summary>
- /// <param name="b">The vakue.</param>
- private void Cmp8(byte b)
- {
- int w = A - b;
-
- if (w < 0)
- {
- w += 0x200;
- }
-
- F = SZtable[w] | H35table[w & 0xff] | Z80Flags.Neg;
-
- if (((A ^ w ^ b) & (int)Z80Flags.HalfCarry) == (int)Z80Flags.HalfCarry)
- {
- F |= Z80Flags.HalfCarry;
- }
-
- if (((b ^ A) & (b ^ w) & 0x80) > 0)
- {
- F |= Z80Flags.PV;
- }
- }
-
- /// <summary>
- /// Subtract an 8-bit value from the accumulator with carry.
- /// </summary>
- /// <param name="b">The vakue.</param>
- private void Sbc8(byte b)
- {
- int w = A - b - (int)(F & Z80Flags.Carry);
-
- if (w < 0)
- {
- w += 0x200;
- }
-
- F = SZtable[w] | H35table[w & 0xff] | Z80Flags.Neg;
-
- if (((A ^ w ^ b) & (int)Z80Flags.HalfCarry) == (int)Z80Flags.HalfCarry)
- {
- F |= Z80Flags.HalfCarry;
- }
-
- if (((b ^ A) & (b ^ w) & 0x80) > 0)
- {
- F |= Z80Flags.PV;
- }
-
- A = (byte)(w & 0xff);
- }
-
- /// <summary>
- /// Add a 16-bit value to a register without carry.
- /// </summary>
- /// <param name="b">The vakue.</param>
- private void Add16(ref ushort reg, ushort b)
- {
- int w = reg + b;
-
- F &= Z80Flags.Sign | Z80Flags.Zero | Z80Flags.PV;
-
- if (w > 0xffff)
- {
- F |= Z80Flags.Carry;
- }
-
- if ((reg ^ w ^ b) == 0x1000)
- {
- F |= Z80Flags.HalfCarry;
- }
-
- reg = (ushort)(w & 0xffff);
-
- F |= H35table[reg >> 8];
- }
-
- /// <summary>
- /// Add a 16-bit value to a register with carry.
- /// </summary>
- /// <param name="b">The vakue.</param>
- private void Adc16(ref ushort reg, ushort b)
- {
- int w = reg + b + (int)(F & Z80Flags.Carry);
-
- F = Z80Flags.None;
-
- if ((w & 0xffff) == 0)
- {
- F |= Z80Flags.Zero;
- }
-
- if ((w & 0x8000) == 0x8000)
- {
- F |= Z80Flags.Sign;
- }
-
- if (w > 0xffff)
- {
- F |= Z80Flags.Carry;
- }
-
- if (((b ^ reg ^ 0x8000) & ((reg ^ w) & 0x8000)) == 0x8000)
- {
- F |= Z80Flags.PV;
- }
-
- if ((reg ^ w ^ b) == 0x1000)
- {
- F |= Z80Flags.HalfCarry;
- }
-
- reg = (ushort)(w & 0xffff);
-
- F |= H35table[reg >> 8];
- }
-
-
- /// <summary>
- /// Subtract a 16-bit value from a register with carry.
- /// </summary>
- /// <param name="b">The vakue.</param>
- private void Sbc16(ref ushort reg, ushort b)
- {
- int w = reg - b - (int)(F & Z80Flags.Carry);
-
- F = Z80Flags.Neg;
-
- if (w < 0)
- {
- w += 0x10000;
- F |= Z80Flags.Carry;
- }
-
- if ((w & 0xffff) == 0)
- {
- F |= Z80Flags.Zero;
- }
-
- if ((w & 0x8000) == 0x8000)
- {
- F |= Z80Flags.Sign;
- }
-
- if (((b ^ reg) & ((reg ^ w) & 0x8000)) == 0x8000)
- {
- F |= Z80Flags.PV;
- }
-
- if ((reg ^ w ^ b) == 0x1000)
- {
- F |= Z80Flags.HalfCarry;
- }
-
- reg = (ushort)(w & 0xffff);
-
- F |= H35table[reg >> 8];
- }
-
- /// <summary>
- /// Increment an 8-bit register.
- /// </summary>
- /// <param name="reg">The register to increment.</param>
- void Inc8(ref byte reg)
- {
- reg++;
-
- F = Z80Flags.Carry;
-
- if (reg == 0x80)
- {
- F |= Z80Flags.PV;
- }
-
- if ((reg & 0x0f) == 0x00)
- {
- F |= Z80Flags.HalfCarry;
- }
- }
-
- /// <summary>
- /// Decrement an 8-bit register.
- /// </summary>
- /// <param name="reg">The register to decrement.</param>
- void Dec8(ref byte reg)
- {
- reg--;
-
- F = Z80Flags.Carry | Z80Flags.Neg;
-
- if (reg == 0x7f)
- {
- F |= Z80Flags.PV;
- }
-
- if ((reg & 0x0f) == 0x0f)
- {
- F |= Z80Flags.HalfCarry;
- }
- }
-
- #endregion
-
- #region ALU rotate and shift operations
-
- /// <summary>
- /// Do RRCA.
- /// </summary>
- private void RRCA()
- {
- F &= Z80Flags.Sign | Z80Flags.Zero | Z80Flags.PV;
- F |= (Z80Flags)(A & 1);
- A = (byte)(Binary.ShiftRight(A, 1) | Binary.ShiftLeft(A, 7));
- F |= H35table[A];
- }
-
- /// <summary>
- /// Do RRA.
- /// </summary>
- private void RRA()
- {
- byte carry = (byte)(F & Z80Flags.Carry);
- F &= Z80Flags.Sign | Z80Flags.Zero | Z80Flags.PV;
- F |= (Z80Flags)(A & 1);
- A = (byte)(Binary.ShiftRight(A, 1) | Binary.ShiftLeft(carry, 7));
- F |= H35table[A];
- }
-
- /// <summary>
- /// Do RRC.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- private void RRC(ref byte reg)
- {
- F = (Z80Flags)(reg & (int)Z80Flags.Carry);
- reg = (byte)(Binary.ShiftRight(reg, 1) | Binary.ShiftLeft(reg, 7));
- F |= PSZtable[reg] | H35table[reg];
- }
-
- /// <summary>
- /// Do RR.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- private void RR(ref byte reg)
- {
- byte carry = (byte)(F & Z80Flags.Carry);
- F = (Z80Flags)(reg & (int)Z80Flags.Carry);
- reg = (byte)(Binary.ShiftRight(reg, 1) | Binary.ShiftLeft(carry, 7));
- F |= PSZtable[reg] | H35table[reg];
- }
-
- /// <summary>
- /// Do RLCA.
- /// </summary>
- private void RLCA()
- {
- F = (F & Z80Flags.PV | Z80Flags.Sign | Z80Flags.Zero)
- | (Z80Flags)Binary.ShiftRight(A, 7);
-
- A = (byte)(Binary.ShiftLeft(A, 1) | Binary.ShiftRight(A, 7));
-
- F |= H35table[A];
- }
-
- /// <summary>
- /// Do RLA.
- /// </summary>
- private void RLA()
- {
- byte carry = (byte)(F & Z80Flags.Carry);
- F = (F & Z80Flags.PV | Z80Flags.Sign | Z80Flags.Zero)
- | (Z80Flags)Binary.ShiftRight(A, 7);
- A = (byte)(Binary.ShiftRight(A, 1) | carry);
- F |= H35table[A];
- }
-
- /// <summary>
- /// Do RLC.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- private void RLC(ref byte reg)
- {
- byte carry = Binary.ShiftRight(reg, 7);
- reg = (byte)(Binary.ShiftLeft(reg, 1) | carry);
- F = PSZtable[reg] | (Z80Flags)carry | H35table[reg];
- }
-
- /// <summary>
- /// Do RL.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- private void RL(ref byte reg)
- {
- byte carry = Binary.ShiftRight(reg, 7);
- reg = (byte)(Binary.ShiftLeft(reg, 1) | (int)(F & Z80Flags.Carry));
- F = PSZtable[reg] | (Z80Flags)carry | H35table[reg];
- }
-
- /// <summary>
- /// Do SRL.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- private void SRL(ref byte reg)
- {
- byte carry = (byte)(reg & 1);
- reg = Binary.ShiftLeft(reg, 1);
- F = PSZtable[reg] | (Z80Flags)carry | H35table[reg];
- }
-
- /// <summary>
- /// Do SRA.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- private void SRA(ref byte reg)
- {
- byte carry = (byte)(reg & 1);
- reg = (byte)(Binary.ShiftLeft(reg, 1) | (reg & 0x80));
- F = PSZtable[reg] | (Z80Flags)carry | H35table[reg];
- }
-
- /// <summary>
- /// Do SLL.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- private void SLL(ref byte reg)
- {
- byte carry = Binary.ShiftRight(reg, 7);
- reg = (byte)(Binary.ShiftRight(reg, 1) | 0x01);
- F = PSZtable[reg] | (Z80Flags)carry | H35table[reg];
- }
-
- /// <summary>
- /// Do SLA.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- private void SLA(ref byte reg)
- {
- byte carry = Binary.ShiftRight(reg, 7);
- reg = Binary.ShiftRight(reg, 1);
- F = PSZtable[reg] | (Z80Flags)carry | H35table[reg];
- }
-
- #endregion
-
- #region ALU boolean operations
-
- /// <summary>
- /// AND a value with the accumulator.
- /// </summary>
- /// <param name="val">The value.</param>
- void AND(byte val)
- {
- A &= val;
- F = PSZtable[A] | Z80Flags.HalfCarry | H35table[A];
- }
-
- /// <summary>
- /// OR a value with the accumulator.
- /// </summary>
- /// <param name="val">The value.</param>
- void OR(byte val)
- {
- A |= val;
- F = PSZtable[A] | Z80Flags.HalfCarry | H35table[A];
- }
-
- /// <summary>
- /// XOR a value with the accumulator.
- /// </summary>
- /// <param name="val">The value.</param>
- void XOR(byte val)
- {
- A ^= val;
- F = PSZtable[A] | Z80Flags.HalfCarry | H35table[A];
- }
-
- /// <summary>
- /// Perform the BIT operation.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- /// <param name="bit">The bit to test.</param>
- void BIT(ref byte reg, int bit)
- {
- F &= Z80Flags.Carry;
- F |= Z80Flags.HalfCarry;
-
- if ((reg & (1 << bit)) != 0)
- {
- if (bit == 7 && (reg & (int)Z80Flags.Sign) != 0)
- {
- F |= Z80Flags.Sign;
- }
-
- if (bit == 5 && (reg & (int)Z80Flags.Hidden5) != 0)
- {
- F |= Z80Flags.Hidden5;
- }
-
- if (bit == 3 && (reg & (int)Z80Flags.Hidden3) != 0)
- {
- F |= Z80Flags.Hidden3;
- }
- }
- else
- {
- F |= Z80Flags.Zero | Z80Flags.PV;
- }
- }
-
- /// <summary>
- /// Perform the bit set operation.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- /// <param name="bit">The bit to test.</param>
- void BIT_SET(ref byte reg, int bit)
- {
- reg |= (byte)(1 << bit);
- }
-
- /// <summary>
- /// Perform the bit clear operation.
- /// </summary>
- /// <param name="reg">The register to operate on.</param>
- /// <param name="bit">The bit to test.</param>
- void BIT_RES(ref byte reg, int bit)
- {
- reg &= (byte)~(1 << bit);
- }
-
- #endregion
-
- #region Jump operations
-
- /// <summary>
- /// The call operation.
- /// </summary>
- private void CALL()
- {
- PUSH((ushort)(PC + 2));
- PC = (ushort)(memory.Read(PC) | memory.Read((ushort)(PC+1)) >> 8);
- }
-
- /// <summary>
- /// The jump operation.
- /// </summary>
- private void JP()
- {
- PC = (ushort)(memory.Read(PC) | memory.Read((ushort)(PC+1)) >> 8);
- }
-
- /// <summary>
- /// The jump relative operation.
- /// </summary>
- private void JR()
- {
- PC = (ushort)(PC + (sbyte)memory.Read(PC) + 1);
- }
-
- /// <summary>
- /// Jump relative if the passed condition flag ANDed with the flag
- /// register equals the passed check value.
- /// </summary>
- /// <param name="cond">The condition flag.</param>
- /// <param name="val">The check value.</param>
- private void JR_COND(Z80Flags cond, Z80Flags val)
- {
- if ((F & cond) == val)
- {
- clock.Add(12);
- JR();
- }
- else
- {
- clock.Add(7);
- PC++;
- }
- }
-
- /// <summary>
- /// Jump if the passed condition flag ANDed with the flag
- /// register equals the passed check value.
- /// </summary>
- /// <param name="cond">The condition flag.</param>
- /// <param name="val">The check value.</param>
- private void JP_COND(Z80Flags cond, Z80Flags val)
- {
- clock.Add(10);
-
- if ((F & cond) == val)
- {
- JP();
- }
- else
- {
- PC+=2;
- }
- }
-
- /// <summary>
- /// Call if the passed condition flag ANDed with the flag
- /// register equals the passed check value.
- /// </summary>
- /// <param name="cond">The condition flag.</param>
- /// <param name="val">The check value.</param>
- private void CALL_COND(Z80Flags cond, Z80Flags val)
- {
- if ((F & cond) == val)
- {
- clock.Add(17);
- CALL();
- }
- else
- {
- clock.Add(10);
- PC+=2;
- }
- }
-
- /// <summary>
- /// Return if the passed condition flag ANDed with the flag
- /// register equals the passed check value.
- /// </summary>
- /// <param name="cond">The condition flag.</param>
- /// <param name="val">The check value.</param>
- private void RET_COND(Z80Flags cond, Z80Flags val)
- {
- if ((F & cond) == val)
- {
- clock.Add(11);
- PC = POP();
- }
- else
- {
- clock.Add(5);
- }
- }
-
- /// <summary>
- /// Reset the PC to an address
- /// register equals the passed check value.
- /// </summary>
- /// <param name="addr">The address.</param>
- private void RST(ushort addr)
- {
- clock.Add(11);
- PUSH(PC);
- PC = addr;
- }
-
- #endregion
- }
-}
|