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fix

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sin365 2024-07-03 14:43:11 +08:00
parent a65d61cf20
commit 93612bde01
112 changed files with 300 additions and 3956 deletions
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AxibugEmuOnline.Client/Assets/Runtime/Controller/IController.cs
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using UnityEngine;
namespace AxibugEmuOnline.Client.UNES.Controller
{
public interface IController
{
void Strobe(bool on);
int ReadState();
void PressKey(KeyCode keyCode);
void ReleaseKey(KeyCode keyCode);
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Controller/KeyConfig.cs
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using System;
using UnityEngine;
namespace AxibugEmuOnline.Client.UNES.Controller
{
[Serializable]
public class KeyConfig
{
public KeyCode Up = KeyCode.UpArrow;
public KeyCode Down = KeyCode.DownArrow;
public KeyCode Left = KeyCode.LeftArrow;
public KeyCode Right = KeyCode.RightArrow;
public KeyCode A = KeyCode.A;
public KeyCode B = KeyCode.S;
public KeyCode Start = KeyCode.Alpha1;
public KeyCode Select = KeyCode.Alpha2;
public KeyCode Debug = KeyCode.P;
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Controller/KeyConfig.cs.meta
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AxibugEmuOnline.Client/Assets/Runtime/Controller/NesController.cs
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using System.Collections.Generic;
using UnityEngine;
using AxibugEmuOnline.Client.UNES.Input;
namespace AxibugEmuOnline.Client.UNES.Controller
{
public class NesController : IController
{
private readonly UNESBehaviour _nes;
private int _data;
private int _serialData;
private bool _strobing;
public bool Debug;
public KeyConfig Config => _nes.KeyConfig;
// bit: 7 6 5 4 3 2 1 0
// button: A B Select Start Up Down Left
private readonly Dictionary<KeyCode, int> _keyMapping;
public NesController(UNESBehaviour nse)
{
_nes = nse;
_keyMapping = new Dictionary<KeyCode, int>
{
{Config.A, 7},
{Config.B, 6},
{Config.Select, 5},
{Config.Start, 4},
{Config.Up, 3},
{Config.Down, 2},
{Config.Left, 1},
{Config.Right, 0},
};
}
public void Strobe(bool on)
{
_serialData = _data;
_strobing = on;
}
public int ReadState()
{
int ret = ((_serialData & 0x80) > 0).AsByte();
if (!_strobing)
{
_serialData <<= 1;
_serialData &= 0xFF;
}
return ret;
}
public void PressKey(KeyCode keyCode)
{
if (keyCode == Config.Debug)
{
Debug ^= true;
}
if (!_keyMapping.ContainsKey(keyCode))
{
return;
}
_data |= 1 << _keyMapping[keyCode];
}
public void ReleaseKey(KeyCode keyCode)
{
if (!_keyMapping.ContainsKey(keyCode))
{
return;
}
_data &= ~(1 << _keyMapping[keyCode]);
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/Addressable.cs
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using System.Runtime.CompilerServices;
namespace AxibugEmuOnline.Client.UNES
{
public abstract class Addressable
{
public delegate uint ReadDelegate(uint address);
public delegate void WriteDelegate(uint address, byte val);
protected readonly Emulator _emulator;
protected readonly ReadDelegate[] _readMap;
protected readonly WriteDelegate[] _writeMap;
protected readonly uint _addressSize;
protected Addressable(Emulator emulator, uint addressSpace)
{
_emulator = emulator;
_addressSize = addressSpace;
_readMap = new ReadDelegate[addressSpace + 1];
_writeMap = new WriteDelegate[addressSpace + 1];
}
protected virtual void InitializeMemoryMap()
{
_readMap.Fill(address => 0);
// Some games write to addresses not mapped and expect to continue afterwards
_writeMap.Fill((address, val) => { });
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public uint ReadByte(uint address)
{
address &= _addressSize;
return _readMap[address](address);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void WriteByte(uint address, uint val)
{
address &= _addressSize;
_writeMap[address](address, (byte)val);
}
public void MapReadHandler(uint start, uint end, CPU.ReadDelegate func)
{
for (uint i = start; i <= end; i++)
{
_readMap[i] = func;
}
}
public void MapWriteHandler(uint start, uint end, CPU.WriteDelegate func)
{
for (uint i = start; i <= end; i++)
{
_writeMap[i] = func;
}
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.Core.cs
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using System;
namespace AxibugEmuOnline.Client.UNES
{
sealed partial class CPU
{
public enum InterruptType
{
NMI,
IRQ,
RESET
}
private readonly uint[] _interruptHandlerOffsets = { 0xFFFA, 0xFFFE, 0xFFFC };
private readonly bool[] _interrupts = new bool[2];
public void Initialize()
{
A = 0;
X = 0;
Y = 0;
SP = 0xFD;
P = 0x24;
PC = ReadWord(_interruptHandlerOffsets[(int) InterruptType.RESET]);
}
public void Reset()
{
SP -= 3;
F.InterruptsDisabled = true;
}
public void TickFromPPU()
{
if (Cycle-- > 0) return;
ExecuteSingleInstruction();
}
public void ExecuteSingleInstruction()
{
for (var i = 0; i < _interrupts.Length; i++)
{
if (_interrupts[i])
{
PushWord(PC);
Push(P);
PC = ReadWord(_interruptHandlerOffsets[i]);
F.InterruptsDisabled = true;
_interrupts[i] = false;
return;
}
}
_currentInstruction = NextByte();
Cycle += _opCodeDefs[_currentInstruction].Cycles;
ResetInstructionAddressingMode();
// if (_numExecuted > 10000 && PC - 1 == 0xFF61)
// if(_emulator.Controller.debug || 0x6E00 <= PC && PC <= 0x6EEF)
// Console.WriteLine($"{(PC - 1).ToString("X4")} {_currentInstruction.ToString("X2")} {opcodeNames[_currentInstruction]}\t\t\tA:{A.ToString("X2")} X:{X.ToString("X2")} Y:{Y.ToString("X2")} P:{P.ToString("X2")} SP:{SP.ToString("X2")}");
var op = _opCodes[_currentInstruction];
if (op == null)
{
throw new ArgumentException(_currentInstruction.ToString("X2"));
}
op();
}
public void TriggerInterrupt(InterruptType type)
{
if (!F.InterruptsDisabled || type == InterruptType.NMI)
{
_interrupts[(int)type] = true;
}
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.Core.cs.meta
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AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.IORegisters.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
namespace AxibugEmuOnline.Client.UNES
{
sealed partial class CPU
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void WriteIoRegister(uint reg, byte val)
{
switch (reg)
{
case 0x4014: // OAM DMA
_emulator.PPU.PerformDMA(val);
break;
case 0x4016:
_emulator.Controller.Strobe(val == 1);
break;
}
if (reg <= 0x401F)
{
return; // APU write
}
throw new NotImplementedException($"{reg:X4} = {val:X2}");
}
public uint ReadIORegister(uint reg)
{
switch (reg)
{
case 0x4016:
return (uint) _emulator.Controller.ReadState() & 0x1;
}
return 0x00;
//throw new NotImplementedException();
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.IORegisters.cs.meta
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463
AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.Instructions.cs
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using System;
using static AxibugEmuOnline.Client.UNES.CPU.AddressingMode;
namespace AxibugEmuOnline.Client.UNES
{
public sealed partial class CPU
{
[AttributeUsage(AttributeTargets.Method, Inherited = false, AllowMultiple = true)]
public class OpCodeDef : Attribute
{
public int OpCode;
public int Cycles = 1;
public bool PageBoundary;
public bool RMW;
public AddressingMode Mode = None;
}
[OpCodeDef(OpCode = 0x20, Cycles = 6)]
private void JSR()
{
PushWord(PC + 1);
PC = NextWord();
}
[OpCodeDef(OpCode = 0x40, Cycles = 6)]
private void RTI()
{
// TODO: this dummy fetch should happen for all single-byte instructions
NextByte();
P = Pop();
PC = PopWord();
}
[OpCodeDef(OpCode = 0x60, Cycles = 6)]
private void RTS()
{
NextByte();
PC = PopWord() + 1;
}
[OpCodeDef(OpCode = 0xC8, Cycles = 2)]
private void INY() => Y++;
[OpCodeDef(OpCode = 0x88, Cycles = 2)]
private void DEY() => Y--;
[OpCodeDef(OpCode = 0xE8, Cycles = 2)]
private void INX() => X++;
[OpCodeDef(OpCode = 0xCA, Cycles = 2, RMW = true)]
private void DEX() => X--;
[OpCodeDef(OpCode = 0xA8, Cycles = 2)]
private void TAY() => Y = A;
[OpCodeDef(OpCode = 0x98, Cycles = 2)]
private void TYA() => A = Y;
[OpCodeDef(OpCode = 0xAA, Cycles = 2, RMW = true)]
private void TAX() => X = A;
[OpCodeDef(OpCode = 0x8A, Cycles = 2, RMW = true)]
private void TXA() => A = X;
[OpCodeDef(OpCode = 0xBA, Cycles = 2)]
private void TSX() => X = SP;
[OpCodeDef(OpCode = 0x9A, Cycles = 2, RMW = true)]
private void TXS() => SP = X;
[OpCodeDef(OpCode = 0x08, Cycles = 3)]
private void PHP() => Push(P | BreakSourceBit);
[OpCodeDef(OpCode = 0x28, Cycles = 4)]
private void PLP() => P = (uint)(Pop() & ~BreakSourceBit);
[OpCodeDef(OpCode = 0x68, Cycles = 4)]
private void PLA() => A = Pop();
[OpCodeDef(OpCode = 0x48, Cycles = 3)]
private void PHA() => Push(A);
[OpCodeDef(OpCode = 0x24, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0x2C, Mode = Absolute, Cycles = 4)]
private void BIT()
{
uint val = AddressRead();
F.Overflow = (val & 0x40) > 0;
F.Zero = (val & A) == 0;
F.Negative = (val & 0x80) > 0;
}
private void Branch(bool cond)
{
uint nPC = (uint)(PC + NextSByte() + 1);
if (cond)
{
PC = nPC;
Cycle++;
}
}
[OpCodeDef(OpCode = 0x4C, Cycles = 3)]
[OpCodeDef(OpCode = 0x6C, Cycles = 5)]
private void JMP()
{
if (_currentInstruction == 0x4C)
{
PC = NextWord();
}
else if (_currentInstruction == 0x6C)
{
uint off = NextWord();
// AN INDIRECT JUMP MUST NEVER USE A VECTOR BEGINNING ON THE LAST BYTE OF A PAGE
//
// If address $3000 contains $40, $30FF contains $80, and $3100 contains $50,
// the result of JMP ($30FF) will be a transfer of control to $4080 rather than
// $5080 as you intended i.e. the 6502 took the low byte of the address from
// $30FF and the high byte from $3000.
//
// http://www.6502.org/tutorials/6502opcodes.html
uint hi = (off & 0xFF) == 0xFF ? off - 0xFF : off + 1;
uint oldPC = PC;
PC = ReadByte(off) | (ReadByte(hi) << 8);
if ((oldPC & 0xFF00) != (PC & 0xFF00))
{
Cycle += 2;
}
}
else
{
throw new NotImplementedException();
}
}
[OpCodeDef(OpCode = 0xB0, Cycles = 2)]
private void BCS() => Branch(F.Carry);
[OpCodeDef(OpCode = 0x90, Cycles = 2)]
private void BCC() => Branch(!F.Carry);
[OpCodeDef(OpCode = 0xF0, Cycles = 2)]
private void BEQ() => Branch(F.Zero);
[OpCodeDef(OpCode = 0xD0, Cycles = 2)]
private void BNE() => Branch(!F.Zero);
[OpCodeDef(OpCode = 0x70, Cycles = 2)]
private void BVS() => Branch(F.Overflow);
[OpCodeDef(OpCode = 0x50, Cycles = 2)]
private void BVC() => Branch(!F.Overflow);
[OpCodeDef(OpCode = 0x10, Cycles = 2)]
private void BPL() => Branch(!F.Negative);
[OpCodeDef(OpCode = 0x30, Cycles = 2)]
private void BMI() => Branch(F.Negative);
[OpCodeDef(OpCode = 0x81, Mode = IndirectX, Cycles = 6)]
[OpCodeDef(OpCode = 0x91, Mode = IndirectY, Cycles = 6)]
[OpCodeDef(OpCode = 0x95, Mode = ZeroPageX, Cycles = 4)]
[OpCodeDef(OpCode = 0x99, Mode = AbsoluteY, Cycles = 5)]
[OpCodeDef(OpCode = 0x9D, Mode = AbsoluteX, Cycles = 5)]
[OpCodeDef(OpCode = 0x85, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0x8D, Mode = Absolute, Cycles = 4)]
private void STA() => AddressWrite(A);
[OpCodeDef(OpCode = 0x96, Mode = ZeroPageY, Cycles = 4)]
[OpCodeDef(OpCode = 0x86, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0x8E, Mode = Absolute, Cycles = 4)]
private void STX() => AddressWrite(X);
[OpCodeDef(OpCode = 0x94, Mode = ZeroPageX, Cycles = 4)]
[OpCodeDef(OpCode = 0x84, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0x8C, Mode = Absolute, Cycles = 4)]
private void STY() => AddressWrite(Y);
[OpCodeDef(OpCode = 0x18, Cycles = 2)]
private void CLC() => F.Carry = false;
[OpCodeDef(OpCode = 0x38, Cycles = 2)]
private void SEC() => F.Carry = true;
[OpCodeDef(OpCode = 0x58, Cycles = 2)]
private void CLI() => F.InterruptsDisabled = false;
[OpCodeDef(OpCode = 0x78, Cycles = 2)]
private void SEI() => F.InterruptsDisabled = true;
[OpCodeDef(OpCode = 0xB8, Cycles = 2)]
private void CLV() => F.Overflow = false;
[OpCodeDef(OpCode = 0xD8, Cycles = 2)]
private void CLD() => F.DecimalMode = false;
[OpCodeDef(OpCode = 0xF8, Cycles = 2)]
private void SED() => F.DecimalMode = true;
[OpCodeDef(OpCode = 0xEA, Cycles = 2)]
[OpCodeDef(OpCode = 0x1A, Cycles = 2)] // Unofficial
[OpCodeDef(OpCode = 0x3A, Cycles = 2)] // Unofficial
[OpCodeDef(OpCode = 0x5A, Cycles = 2)] // Unofficial
[OpCodeDef(OpCode = 0x7A, Cycles = 2)] // Unofficial
[OpCodeDef(OpCode = 0xDA, Cycles = 2)] // Unofficial
[OpCodeDef(OpCode = 0xFA, Cycles = 2)] // Unofficial
private void NOP() { }
[OpCodeDef(OpCode = 0xA1, Mode = IndirectX, Cycles = 6)]
[OpCodeDef(OpCode = 0xA5, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0xA9, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0xAD, Mode = Absolute, Cycles = 4)]
[OpCodeDef(OpCode = 0xB1, Mode = IndirectY, Cycles = 5, PageBoundary = true)]
[OpCodeDef(OpCode = 0xB5, Mode = ZeroPageX, Cycles = 4)]
[OpCodeDef(OpCode = 0xB9, Mode = AbsoluteY, Cycles = 4, PageBoundary = true)]
[OpCodeDef(OpCode = 0xBD, Mode = AbsoluteX, Cycles = 4, PageBoundary = true)]
private void LDA() => A = AddressRead();
[OpCodeDef(OpCode = 0xA0, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0xA4, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0xAC, Mode = Absolute, Cycles = 4)]
[OpCodeDef(OpCode = 0xB4, Mode = ZeroPageX, Cycles = 4)]
[OpCodeDef(OpCode = 0xBC, Mode = AbsoluteX, Cycles = 4, PageBoundary = true)]
private void LDY() => Y = AddressRead();
[OpCodeDef(OpCode = 0xA2, Mode = Immediate, Cycles = 2, RMW = true)]
[OpCodeDef(OpCode = 0xA6, Mode = ZeroPage, Cycles = 3, RMW = true)]
[OpCodeDef(OpCode = 0xAE, Mode = Absolute, Cycles = 4, RMW = true)]
[OpCodeDef(OpCode = 0xB6, Mode = ZeroPageY, Cycles = 4, RMW = true)]
[OpCodeDef(OpCode = 0xBE, Mode = AbsoluteY, Cycles = 4, PageBoundary = true, RMW = true)]
private void LDX() => X = AddressRead();
[OpCodeDef(OpCode = 0x01, Mode = IndirectX, Cycles = 6)]
[OpCodeDef(OpCode = 0x05, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0x09, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0x0D, Mode = Absolute, Cycles = 4)]
[OpCodeDef(OpCode = 0x11, Mode = IndirectY, Cycles = 5, PageBoundary = true)]
[OpCodeDef(OpCode = 0x15, Mode = ZeroPageX, Cycles = 4)]
[OpCodeDef(OpCode = 0x19, Mode = AbsoluteY, Cycles = 4, PageBoundary = true)]
[OpCodeDef(OpCode = 0x1D, Mode = AbsoluteX, Cycles = 4, PageBoundary = true)]
private void ORA() => A |= AddressRead();
[OpCodeDef(OpCode = 0x21, Mode = IndirectX, Cycles = 6)]
[OpCodeDef(OpCode = 0x25, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0x29, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0x2D, Mode = Absolute, Cycles = 4)]
[OpCodeDef(OpCode = 0x31, Mode = IndirectY, Cycles = 5, PageBoundary = true)]
[OpCodeDef(OpCode = 0x35, Mode = ZeroPageX, Cycles = 4)]
[OpCodeDef(OpCode = 0x39, Mode = AbsoluteY, Cycles = 4, PageBoundary = true)]
[OpCodeDef(OpCode = 0x3D, Mode = AbsoluteX, Cycles = 4, PageBoundary = true)]
private void AND() => A &= AddressRead();
[OpCodeDef(OpCode = 0x41, Mode = IndirectX, Cycles = 6)]
[OpCodeDef(OpCode = 0x45, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0x49, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0x4D, Mode = Absolute, Cycles = 4)]
[OpCodeDef(OpCode = 0x51, Mode = IndirectY, Cycles = 5, PageBoundary = true)]
[OpCodeDef(OpCode = 0x55, Mode = ZeroPageX, Cycles = 4)]
[OpCodeDef(OpCode = 0x59, Mode = AbsoluteY, Cycles = 4, PageBoundary = true)]
[OpCodeDef(OpCode = 0x5D, Mode = AbsoluteX, Cycles = 4, PageBoundary = true)]
private void EOR() => A ^= AddressRead();
[OpCodeDef(OpCode = 0xE1, Mode = IndirectX, Cycles = 6)]
[OpCodeDef(OpCode = 0xE5, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0x69, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0xE9, Mode = Immediate, Cycles = 2)] // Official duplicate of $69
[OpCodeDef(OpCode = 0xEB, Mode = Immediate, Cycles = 2)] // Unofficial duplicate of $69
[OpCodeDef(OpCode = 0xED, Mode = Absolute, Cycles = 4)]
[OpCodeDef(OpCode = 0xF1, Mode = IndirectY, Cycles = 5, PageBoundary = true)]
[OpCodeDef(OpCode = 0xF5, Mode = ZeroPageX, Cycles = 4)]
[OpCodeDef(OpCode = 0xF9, Mode = AbsoluteY, Cycles = 4, PageBoundary = true)]
[OpCodeDef(OpCode = 0xFD, Mode = AbsoluteX, Cycles = 4, PageBoundary = true)]
private void SBC() => ADCImpl((byte)~AddressRead());
[OpCodeDef(OpCode = 0x61, Mode = IndirectX, Cycles = 6)]
[OpCodeDef(OpCode = 0x65, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0x69, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0x6D, Mode = Absolute, Cycles = 4)]
[OpCodeDef(OpCode = 0x71, Mode = IndirectY, Cycles = 5, PageBoundary = true)]
[OpCodeDef(OpCode = 0x75, Mode = ZeroPageX, Cycles = 4)]
[OpCodeDef(OpCode = 0x79, Mode = AbsoluteY, Cycles = 4, PageBoundary = true)]
[OpCodeDef(OpCode = 0x7D, Mode = AbsoluteX, Cycles = 4, PageBoundary = true)]
private void ADC() => ADCImpl(AddressRead());
private void ADCImpl(uint val)
{
int nA = (sbyte)A + (sbyte)val + (sbyte)(F.Carry ? 1 : 0);
F.Overflow = nA < -128 || nA > 127;
F.Carry = (A + val + (F.Carry ? 1 : 0)) > 0xFF;
A = (byte)(nA & 0xFF);
}
[OpCodeDef(OpCode = 0x00, Cycles = 7)]
private void BRK()
{
NextByte();
Push(P | BreakSourceBit);
F.InterruptsDisabled = true;
PC = ReadByte(0xFFFE) | (ReadByte(0xFFFF) << 8);
}
[OpCodeDef(OpCode = 0xC1, Mode = IndirectX, Cycles = 6)]
[OpCodeDef(OpCode = 0xC5, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0xC9, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0xCD, Mode = Absolute, Cycles = 4)]
[OpCodeDef(OpCode = 0xD1, Mode = IndirectY, Cycles = 5, PageBoundary = true)]
[OpCodeDef(OpCode = 0xD5, Mode = ZeroPageX, Cycles = 4)]
[OpCodeDef(OpCode = 0xD9, Mode = AbsoluteY, Cycles = 4, PageBoundary = true)]
[OpCodeDef(OpCode = 0xDD, Mode = AbsoluteX, Cycles = 4, PageBoundary = true)]
private void CMP() => CMPImpl(A);
[OpCodeDef(OpCode = 0xE0, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0xE4, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0xEC, Mode = Absolute, Cycles = 4)]
private void CPX() => CMPImpl(X);
[OpCodeDef(OpCode = 0xC0, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0xC4, Mode = ZeroPage, Cycles = 3)]
[OpCodeDef(OpCode = 0xCC, Mode = Absolute, Cycles = 4)]
private void CPY() => CMPImpl(Y);
private void CMPImpl(uint reg)
{
long d = reg - (int)AddressRead();
F.Negative = (d & 0x80) > 0 && d != 0;
F.Carry = d >= 0;
F.Zero = d == 0;
}
[OpCodeDef(OpCode = 0x46, Mode = ZeroPage, Cycles = 5, RMW = true)]
[OpCodeDef(OpCode = 0x4E, Mode = Absolute, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0x56, Mode = ZeroPageX, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0x5E, Mode = AbsoluteX, Cycles = 7, RMW = true)]
[OpCodeDef(OpCode = 0x4A, Mode = Direct, Cycles = 2, RMW = true)]
private void LSR()
{
uint D = AddressRead();
F.Carry = (D & 0x1) > 0;
D >>= 1;
_F(D);
AddressWrite(D);
}
[OpCodeDef(OpCode = 0x06, Mode = ZeroPage, Cycles = 5, RMW = true)]
[OpCodeDef(OpCode = 0x0E, Mode = Absolute, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0x16, Mode = ZeroPageX, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0x1E, Mode = AbsoluteX, Cycles = 7, RMW = true)]
[OpCodeDef(OpCode = 0x0A, Mode = Direct, Cycles = 2, RMW = true)]
private void ASL()
{
uint D = AddressRead();
F.Carry = (D & 0x80) > 0;
D <<= 1;
_F(D);
AddressWrite(D);
}
[OpCodeDef(OpCode = 0x66, Mode = ZeroPage, Cycles = 5, RMW = true)]
[OpCodeDef(OpCode = 0x6E, Mode = Absolute, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0x76, Mode = ZeroPageX, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0x7E, Mode = AbsoluteX, Cycles = 7, RMW = true)]
[OpCodeDef(OpCode = 0x6A, Mode = Direct, Cycles = 2, RMW = true)]
private void ROR()
{
uint D = AddressRead();
bool c = F.Carry;
F.Carry = (D & 0x1) > 0;
D >>= 1;
if (c) D |= 0x80;
_F(D);
AddressWrite(D);
}
[OpCodeDef(OpCode = 0x26, Mode = ZeroPage, Cycles = 5, RMW = true)]
[OpCodeDef(OpCode = 0x2E, Mode = Absolute, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0x36, Mode = ZeroPageX, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0x3E, Mode = AbsoluteX, Cycles = 7, RMW = true)]
[OpCodeDef(OpCode = 0x2A, Mode = Direct, Cycles = 2, RMW = true)]
private void ROL()
{
uint D = AddressRead();
bool c = F.Carry;
F.Carry = (D & 0x80) > 0;
D <<= 1;
if (c) D |= 0x1;
_F(D);
AddressWrite(D);
}
[OpCodeDef(OpCode = 0xE6, Mode = ZeroPage, Cycles = 5, RMW = true)]
[OpCodeDef(OpCode = 0xEE, Mode = Absolute, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0xF6, Mode = ZeroPageX, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0xFE, Mode = AbsoluteX, Cycles = 7, RMW = true)]
private void INC()
{
byte D = (byte)(AddressRead() + 1);
_F(D);
AddressWrite(D);
}
[OpCodeDef(OpCode = 0xC6, Mode = ZeroPage, Cycles = 5, RMW = true)]
[OpCodeDef(OpCode = 0xCE, Mode = Absolute, Cycles = 3, RMW = true)]
[OpCodeDef(OpCode = 0xD6, Mode = ZeroPageX, Cycles = 6, RMW = true)]
[OpCodeDef(OpCode = 0xDE, Mode = AbsoluteX, Cycles = 7, RMW = true)]
private void DEC()
{
byte D = (byte)(AddressRead() - 1);
_F(D);
AddressWrite(D);
}
#region Unofficial Opcodes
[OpCodeDef(OpCode = 0x80, Cycles = 2)]
[OpCodeDef(OpCode = 0x82, Cycles = 2)]
[OpCodeDef(OpCode = 0x89, Cycles = 2)]
[OpCodeDef(OpCode = 0xC2, Cycles = 2)]
[OpCodeDef(OpCode = 0xE2, Cycles = 2)]
private void SKB() => NextByte(); // Essentially a 2-byte NOP
[OpCodeDef(OpCode = 0x0B, Mode = Immediate, Cycles = 2)]
[OpCodeDef(OpCode = 0x2B, Mode = Immediate, Cycles = 2)]
private void ANC()
{
A &= AddressRead();
F.Carry = F.Negative;
}
[OpCodeDef(OpCode = 0x4B, Mode = Immediate, Cycles = 2)]
private void ALR()
{
A &= AddressRead();
F.Carry = (A & 0x1) > 0;
A >>= 1;
_F(A);
}
[OpCodeDef(OpCode = 0x6B, Mode = Immediate, Cycles = 2)]
private void ARR()
{
A &= AddressRead();
bool c = F.Carry;
F.Carry = (A & 0x1) > 0;
A >>= 1;
if (c) A |= 0x80;
_F(A);
}
[OpCodeDef(OpCode = 0xAB, Mode = Immediate, Cycles = 2)]
private void ATX()
{
// This opcode ORs the A register with #$EE, ANDs the result with an immediate
// value, and then stores the result in both A and X.
A |= ReadByte(0xEE);
A &= AddressRead();
X = A;
}
#endregion
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.Instructions.cs.meta
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165
AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.Memory.cs
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@ -1,165 +0,0 @@
using System;
using System.Linq;
using System.Runtime.CompilerServices;
using static AxibugEmuOnline.Client.UNES.CPU.AddressingMode;
namespace AxibugEmuOnline.Client.UNES
{
sealed partial class CPU
{
public enum AddressingMode
{
None,
Direct,
Immediate,
ZeroPage,
Absolute,
ZeroPageX,
ZeroPageY,
AbsoluteX,
AbsoluteY,
IndirectX,
IndirectY
}
private uint? _currentMemoryAddress;
private uint _rmwValue;
private void ResetInstructionAddressingMode() => _currentMemoryAddress = null;
private uint _Address()
{
var def = _opCodeDefs[_currentInstruction];
switch (def.Mode)
{
case Immediate:
return PC++;
case ZeroPage:
return NextByte();
case Absolute:
return NextWord();
case ZeroPageX:
return (NextByte() + X) & 0xFF;
case ZeroPageY:
return (NextByte() + Y) & 0xFF;
case AbsoluteX:
var address = NextWord();
if (def.PageBoundary && (address & 0xFF00) != ((address + X) & 0xFF00))
{
Cycle += 1;
}
return address + X;
case AbsoluteY:
address = NextWord();
if (def.PageBoundary && (address & 0xFF00) != ((address + Y) & 0xFF00))
{
Cycle += 1;
}
return address + Y;
case IndirectX:
var off = (NextByte() + X) & 0xFF;
return ReadByte(off) | (ReadByte((off + 1) & 0xFF) << 8);
case IndirectY:
off = NextByte() & 0xFF;
address = ReadByte(off) | (ReadByte((off + 1) & 0xFF) << 8);
if (def.PageBoundary && (address & 0xFF00) != ((address + Y) & 0xFF00))
{
Cycle += 1;
}
return (address + Y) & 0xFFFF;
}
throw new NotImplementedException();
}
public uint AddressRead()
{
if (_opCodeDefs[_currentInstruction].Mode == Direct)
{
return _rmwValue = A;
}
if (_currentMemoryAddress == null)
{
_currentMemoryAddress = _Address();
}
return _rmwValue = ReadByte((uint)_currentMemoryAddress) & 0xFF;
}
public void AddressWrite(uint val)
{
if (_opCodeDefs[_currentInstruction].Mode == Direct)
{
A = val;
}
else
{
if (_currentMemoryAddress == null)
{
_currentMemoryAddress = _Address();
}
if (_opCodeDefs[_currentInstruction].RMW)
{
WriteByte((uint)_currentMemoryAddress, _rmwValue);
}
WriteByte((uint)_currentMemoryAddress, val);
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private uint ReadWord(uint address) => ReadByte(address) | (ReadByte(address + 1) << 8);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private uint NextByte() => ReadByte(PC++);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private uint NextWord() => NextByte() | (NextByte() << 8);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private sbyte NextSByte() => (sbyte)NextByte();
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private void Push(uint what)
{
WriteByte(0x100 + SP, what);
SP--;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private uint Pop()
{
SP++;
return ReadByte(0x100 + SP);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private void PushWord(uint what)
{
Push(what >> 8);
Push(what & 0xFF);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private uint PopWord() => Pop() | (Pop() << 8);
protected override void InitializeMemoryMap()
{
base.InitializeMemoryMap();
MapReadHandler(0x0000, 0x1FFF, address => _ram[address & 0x07FF]);
MapReadHandler(0x2000, 0x3FFF, address => _emulator.PPU.ReadRegister((address & 0x7) - 0x2000));
MapReadHandler(0x4000, 0x4017, ReadIORegister);
MapWriteHandler(0x0000, 0x1FFF, (address, val) => _ram[address & 0x07FF] = val);
MapWriteHandler(0x2000, 0x3FFF, (address, val) => _emulator.PPU.WriteRegister((address & 0x7) - 0x2000, val));
MapWriteHandler(0x4000, 0x401F, WriteIoRegister);
_emulator.Mapper.InitializeMemoryMap(this);
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.Memory.cs.meta
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89
AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.Registers.cs
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@ -1,89 +0,0 @@
using System.Runtime.CompilerServices;
namespace AxibugEmuOnline.Client.UNES
{
sealed partial class CPU
{
private const int CarryBit = 0x1;
private const int ZeroBit = 0x2;
private const int InterruptDisabledBit = 0x4;
private const int DecimalModeBit = 0x8;
private const int BreakSourceBit = 0x10;
private const int OverflowBit = 0x40;
private const int NegativeBit = 0x80;
public class CPUFlags
{
public bool Negative;
public bool Overflow;
public bool BreakSource;
public bool DecimalMode;
public bool InterruptsDisabled;
public bool Zero;
public bool Carry;
}
public readonly CPUFlags F = new CPUFlags();
public uint _A, _X, _Y, _SP;
public uint PC;
public uint A
{
get => _A;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private set => _A = _F(value & 0xFF);
}
public uint X
{
get => _X;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private set => _X = _F(value & 0xFF);
}
public uint Y
{
get => _Y;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private set => _Y = _F(value & 0xFF);
}
public uint SP
{
get => _SP;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private set => _SP = value & 0xFF;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private uint _F(uint val)
{
F.Zero = (val & 0xFF) == 0;
F.Negative = (val & 0x80) > 0;
return val;
}
public uint P
{
get => (uint) ((F.Carry.AsByte() << 0) |
(F.Zero.AsByte() << 1) |
(F.InterruptsDisabled.AsByte() << 2) |
(F.DecimalMode.AsByte() << 3) |
(F.BreakSource.AsByte() << 4) |
(1 << 5) |
(F.Overflow.AsByte() << 6) |
(F.Negative.AsByte() << 7));
set
{
F.Carry = (value & CarryBit) > 0;
F.Zero = (value & ZeroBit) > 0;
F.InterruptsDisabled = (value & InterruptDisabledBit) > 0;
F.DecimalMode = (value & DecimalModeBit) > 0;
F.BreakSource = (value & BreakSourceBit) > 0;
F.Overflow = (value & OverflowBit) > 0;
F.Negative = (value & NegativeBit) > 0;
}
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.Registers.cs.meta
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65
AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.cs
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@ -1,65 +0,0 @@
using System;
using System.Linq;
using System.Reflection;
namespace AxibugEmuOnline.Client.UNES
{
sealed partial class CPU : Addressable
{
private readonly byte[] _ram = new byte[0x800];
public int Cycle;
private uint _currentInstruction;
public delegate void OpCode();
private readonly OpCode[] _opCodes = new OpCode[256];
private readonly string[] _opCodeNames = new string[256];
private readonly OpCodeDef[] _opCodeDefs = new OpCodeDef[256];
public CPU(Emulator emulator) : base(emulator, 0xFFFF)
{
InitializeOpCodes();
InitializeMemoryMap();
Initialize();
}
private void InitializeOpCodes()
{
var opCodeBindings = from opCode in GetType().GetMethods(BindingFlags.NonPublic | BindingFlags.Instance)
let defs = opCode.GetCustomAttributes(typeof(OpCodeDef), false)
where defs.Length > 0
select new
{
binding = (OpCode)Delegate.CreateDelegate(typeof(OpCode), this, opCode.Name),
name = opCode.Name,
defs = (from d in defs select (OpCodeDef)d)
};
foreach (var opCode in opCodeBindings)
{
foreach (var def in opCode.defs)
{
_opCodes[def.OpCode] = opCode.binding;
_opCodeNames[def.OpCode] = opCode.name;
_opCodeDefs[def.OpCode] = def;
}
}
}
public void Execute()
{
for (var i = 0; i < 5000; i++)
{
ExecuteSingleInstruction();
}
uint w;
ushort x = 6000;
string z = "";
while ((w = ReadByte(x)) != '\0')
{
z += (char)w;
}
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Core/CPU.cs.meta
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66
AxibugEmuOnline.Client/Assets/Runtime/Core/Cartridge.cs
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@ -1,66 +0,0 @@
using System;
namespace AxibugEmuOnline.Client.UNES
{
public class Cartridge
{
public readonly byte[] Raw;
public readonly int PRGROMSize;
public readonly int CHRROMSize;
public readonly int PRGRAMSize;
public readonly int PRGROMOffset;
public readonly int MapperNumber;
public readonly byte[] PRGROM;
public readonly byte[] CHRROM;
public VRAMMirroringMode MirroringMode;
public enum VRAMMirroringMode
{
Horizontal, Vertical, All, Upper, Lower
}
public Cartridge(byte[] bytes)
{
Raw = bytes;
var header = BitConverter.ToInt32(Raw, 0);
if (header != 0x1A53454E) // "NES<EOF>"
{
throw new FormatException("unexpected header value " + header.ToString("X"));
}
PRGROMSize = Raw[4] * 0x4000; // 16kb units
CHRROMSize = Raw[5] * 0x2000; // 8kb units
PRGRAMSize = Raw[8] * 0x2000;
var hasTrainer = (Raw[6] & 0b100) > 0;
PRGROMOffset = 16 + (hasTrainer ? 512 : 0);
MirroringMode = (Raw[6] & 0x1) > 0 ? VRAMMirroringMode.Vertical : VRAMMirroringMode.Horizontal;
if ((Raw[6] & 0x8) > 0)
{
MirroringMode = VRAMMirroringMode.All;
}
MapperNumber = (Raw[6] >> 4) | (Raw[7] & 0xF0);
PRGROM = new byte[PRGROMSize];
Array.Copy(Raw, PRGROMOffset, PRGROM, 0, PRGROMSize);
if (CHRROMSize == 0)
{
CHRROM = new byte[0x2000];
}
else
{
CHRROM = new byte[CHRROMSize];
Array.Copy(Raw, PRGROMOffset + PRGROMSize, CHRROM, 0, CHRROMSize);
}
}
public override string ToString()
{
return $"Cartridge{{PRGROMSize={PRGROMSize}, CHRROMSize={CHRROMSize}, PRGROMOffset={PRGROMOffset}, MapperNumber={MapperNumber}}}";
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/Cartridge.cs.meta
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44
AxibugEmuOnline.Client/Assets/Runtime/Core/Emulator.cs
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@ -1,44 +0,0 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using AxibugEmuOnline.Client.UNES.Controller;
using AxibugEmuOnline.Client.UNES.Mapper;
namespace AxibugEmuOnline.Client.UNES
{
public class Emulator
{
private static readonly Dictionary<int, KeyValuePair<Type, MapperDef>> Mappers = (from type in Assembly.GetExecutingAssembly().GetTypes()
let def = (MapperDef)type.GetCustomAttributes(typeof(MapperDef), true).FirstOrDefault()
where def != null
select new { def, type }).ToDictionary(a => a.def.Id, a => new KeyValuePair<Type, MapperDef>(a.type, a.def));
public IController Controller;
public readonly CPU CPU;
public readonly PPU PPU;
public readonly BaseMapper Mapper;
public readonly Cartridge Cartridge;
public Emulator(byte[] bytes, IController controller)
{
Cartridge = new Cartridge(bytes);
if (!Mappers.ContainsKey(Cartridge.MapperNumber))
{
throw new NotImplementedException($"unsupported mapper {Cartridge.MapperNumber}");
}
Mapper = (BaseMapper)Activator.CreateInstance(Mappers[Cartridge.MapperNumber].Key, this);
CPU = new CPU(this);
PPU = new PPU(this);
Controller = controller;
// Load();
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/Emulator.cs.meta
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394
AxibugEmuOnline.Client/Assets/Runtime/Core/PPU.Core.cs
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@ -1,394 +0,0 @@
using System;
namespace AxibugEmuOnline.Client.UNES
{
partial class PPU
{
private const int GameWidth = 256, GameHeight = 240;
private uint _bufferPos;
public readonly uint[] RawBitmap = new uint[GameWidth * GameHeight];
//查找表的Idx网络缓存
public readonly byte[] RawBitmap_paletteIdxCache = new byte[GameWidth * GameHeight];
private readonly uint[] _priority = new uint[GameWidth * GameHeight];
// TODO: use real chroma/luma decoding
private readonly uint[] _palette = {
0x7C7C7C, 0x0000FC, 0x0000BC, 0x4428BC, 0x940084, 0xA80020, 0xA81000, 0x881400,
0x503000, 0x007800, 0x006800, 0x005800, 0x004058, 0x000000, 0x000000, 0x000000,
0xBCBCBC, 0x0078F8, 0x0058F8, 0x6844FC, 0xD800CC, 0xE40058, 0xF83800, 0xE45C10,
0xAC7C00, 0x00B800, 0x00A800, 0x00A844, 0x008888, 0x000000, 0x000000, 0x000000,
0xF8F8F8, 0x3CBCFC, 0x6888FC, 0x9878F8, 0xF878F8, 0xF85898, 0xF87858, 0xFCA044,
0xF8B800, 0xB8F818, 0x58D854, 0x58F898, 0x00E8D8, 0x787878, 0x000000, 0x000000,
0xFCFCFC, 0xA4E4FC, 0xB8B8F8, 0xD8B8F8, 0xF8B8F8, 0xF8A4C0, 0xF0D0B0, 0xFCE0A8,
0xF8D878, 0xD8F878, 0xB8F8B8, 0xB8F8D8, 0x00FCFC, 0xF8D8F8, 0x000000, 0x000000
};
private int _scanLineCount = 261;
private int _cyclesPerLine = 341;
private int _cpuSyncCounter;
private readonly uint[] _scanLineOAM = new uint[8 * 4];
private readonly bool[] _isSprite0 = new bool[8];
private int _spriteCount;
private long _tileShiftRegister;
private uint _currentNameTableByte;
private uint _currentHighTile, _currentLowTile;
private uint _currentColor;
public void ProcessPixel(int x, int y)
{
ProcessBackgroundForPixel(x, y);
if (F.DrawSprites)
{
ProcessSpritesForPixel(x, y);
}
if (y != -1)
{
_bufferPos++;
}
}
private void CountSpritesOnLine(int scanLine)
{
_spriteCount = 0;
var height = F.TallSpritesEnabled ? 16 : 8;
for (var idx = 0; idx < _oam.Length; idx += 4)
{
var y = _oam[idx] + 1;
if (scanLine >= y && scanLine < y + height)
{
_isSprite0[_spriteCount] = idx == 0;
_scanLineOAM[_spriteCount * 4 + 0] = _oam[idx + 0];
_scanLineOAM[_spriteCount * 4 + 1] = _oam[idx + 1];
_scanLineOAM[_spriteCount * 4 + 2] = _oam[idx + 2];
_scanLineOAM[_spriteCount * 4 + 3] = _oam[idx + 3];
_spriteCount++;
}
if (_spriteCount == 8)
{
break;
}
}
}
private void NextNameTableByte()
{
_currentNameTableByte = ReadByte(0x2000 | (V & 0x0FFF));
}
private void NextTileByte(bool hi)
{
var tileIdx = _currentNameTableByte * 16;
var address = F.PatternTableAddress + tileIdx + FineY;
if (hi)
{
_currentHighTile = ReadByte(address + 8);
}
else
{
_currentLowTile = ReadByte(address);
}
}
private void NextAttributeByte()
{
// Bless nesdev
var address = 0x23C0 | (V & 0x0C00) | ((V >> 4) & 0x38) | ((V >> 2) & 0x07);
_currentColor = (ReadByte(address) >> (int)((CoarseX & 2) | ((CoarseY & 2) << 1))) & 0x3;
}
private void ShiftTileRegister()
{
for (var x = 0; x < 8; x++)
{
uint palette = ((_currentHighTile & 0x80) >> 6) | ((_currentLowTile & 0x80) >> 7);
_tileShiftRegister |= (palette + _currentColor * 4) << ((7 - x) * 4);
_currentLowTile <<= 1;
_currentHighTile <<= 1;
}
}
private void ProcessBackgroundForPixel(int cycle, int scanLine)
{
if (cycle < 8 && !F.DrawLeftBackground || !F.DrawBackground && scanLine != -1)
{
// Maximally sketchy: if current address is in the PPU palette, then it draws that palette entry if rendering is disabled
// Otherwise, it draws $3F00 (universal bg color)
// https://www.romhacking.net/forum/index.php?topic=20554.0
// Don't know if any game actually uses it, but a test ROM I wrote unexpectedly showed this
// corner case
//RawBitmap[_bufferPos] = _palette[ReadByte(0x3F00 + ((F.BusAddress & 0x3F00) == 0x3F00 ? F.BusAddress & 0x001F : 0)) & 0x3F];
byte pIdx = (byte)(ReadByte(0x3F00 + ((F.BusAddress & 0x3F00) == 0x3F00 ? F.BusAddress & 0x001F : 0)) & 0x3F);
RawBitmap[_bufferPos] = _palette[pIdx];
RawBitmap_paletteIdxCache[_bufferPos] = pIdx;
return;
}
var paletteEntry = (uint)(_tileShiftRegister >> 32 >> (int)((7 - X) * 4)) & 0x0F;
if (paletteEntry % 4 == 0) paletteEntry = 0;
if (scanLine != -1)
{
_priority[_bufferPos] = paletteEntry;
//RawBitmap[_bufferPos] = _palette[ReadByte(0x3F00u + paletteEntry) & 0x3F];
byte pIdx = (byte)(ReadByte(0x3F00u + paletteEntry) & 0x3F);
RawBitmap[_bufferPos] = _palette[pIdx];
RawBitmap_paletteIdxCache[_bufferPos] = pIdx;
}
}
private void ProcessSpritesForPixel(int x, int scanLine)
{
for (var idx = _spriteCount * 4 - 4; idx >= 0; idx -= 4)
{
var spriteX = _scanLineOAM[idx + 3];
var spriteY = _scanLineOAM[idx] + 1;
// Don't draw this sprite if...
if (spriteY == 0 || // it's located at y = 0
spriteY > 239 || // it's located past y = 239 ($EF)
x >= spriteX + 8 || // it's behind the current dot
x < spriteX || // it's ahead of the current dot
x < 8 && !F.DrawLeftSprites) // it's in the clip area, and clipping is enabled
{
continue;
}
// amusingly enough, the PPU's palette handling is basically identical
// to that of the Gameboy / Gameboy Color, so I've sort of just copy/pasted
// handling code wholesale from my GBC emulator at
// https://github.com/Xyene/Nitrous-Emulator/blob/master/src/main/java/nitrous/lcd/LCD.java#L642
var tileIdx = _scanLineOAM[idx + 1];
if (F.TallSpritesEnabled)
{
tileIdx &= ~0x1u;
}
tileIdx *= 16;
var attribute = _scanLineOAM[idx + 2] & 0xE3;
var palette = attribute & 0x3;
var front = (attribute & 0x20) == 0;
var flipX = (attribute & 0x40) > 0;
var flipY = (attribute & 0x80) > 0;
var px = (int) (x - spriteX);
var line = (int) (scanLine - spriteY);
var tableBase = F.TallSpritesEnabled ? (_scanLineOAM[idx + 1] & 1) * 0x1000 : F.SpriteTableAddress;
if (F.TallSpritesEnabled)
{
if (line >= 8)
{
line -= 8;
if (!flipY)
{
tileIdx += 16;
}
flipY = false;
}
if (flipY)
{
tileIdx += 16;
}
}
// here we handle the x and y flipping by tweaking the indices we are accessing
var logicalX = flipX ? 7 - px : px;
var logicalLine = flipY ? 7 - line : line;
var address = (uint) (tableBase + tileIdx + logicalLine);
// this looks bad, but it's about as readable as it's going to get
var color = (uint) (
(
(
(
// fetch upper bit from 2nd bit plane
ReadByte(address + 8) & (0x80 >> logicalX)
) >> (7 - logicalX)
) << 1 // this is the upper bit of the color number
) |
(
(
ReadByte(address) & (0x80 >> logicalX)
) >> (7 - logicalX)
)); // << 0, this is the lower bit of the color number
if (color > 0)
{
var backgroundPixel = _priority[_bufferPos];
// Sprite 0 hits...
if (!(!_isSprite0[idx / 4] || // do not occur on not-0 sprite
x < 8 && !F.DrawLeftSprites || // or if left clipping is enabled
backgroundPixel == 0 || // or if bg pixel is transparent
F.Sprite0Hit || // or if it fired this frame already
x == 255)) // or if x is 255, "for an obscure reason related to the pixel pipeline"
{
F.Sprite0Hit = true;
}
if (F.DrawBackground && (front || backgroundPixel == 0))
{
if (scanLine != -1)
{
//RawBitmap[_bufferPos] = _palette[ReadByte(0x3F10 + palette * 4 + color) & 0x3F];
byte pIdx = (byte)(ReadByte(0x3F10 + palette * 4 + color) & 0x3F);
RawBitmap[_bufferPos] = _palette[pIdx];
RawBitmap_paletteIdxCache[_bufferPos] = pIdx;
}
}
}
}
}
public void ProcessFrame()
{
RawBitmap.Fill(0u);
RawBitmap_paletteIdxCache.Fill((byte)0);
_priority.Fill(0u);
_bufferPos = 0;
for (var i = -1; i < _scanLineCount; i++)
{
ProcessScanLine(i);
}
}
public void ProcessScanLine(int line)
{
for (var i = 0; i < _cyclesPerLine; i++)
{
ProcessCycle(line, i);
}
}
private int _cpuClocksSinceVBL;
private int _ppuClocksSinceVBL;
public void ProcessCycle(int scanLine, int cycle)
{
var visibleCycle = 1 <= cycle && cycle <= 256;
var prefetchCycle = 321 <= cycle && cycle <= 336;
var fetchCycle = visibleCycle || prefetchCycle;
if (F.VBlankStarted)
{
_ppuClocksSinceVBL++;
}
if (0 <= scanLine && scanLine < 240 || scanLine == -1)
{
if (visibleCycle)
{
ProcessPixel(cycle - 1, scanLine);
}
// During pixels 280 through 304 of this scanline, the vertical scroll bits are reloaded TODO: if rendering is enabled.
if (scanLine == -1 && 280 <= cycle && cycle <= 304)
{
ReloadScrollY();
}
if (fetchCycle)
{
_tileShiftRegister <<= 4;
// See https://wiki.nesdev.com/w/images/d/d1/Ntsc_timing.png
// Takes 8 cycles for tile to be read, 2 per "step"
switch (cycle & 7)
{
case 1: // NT
NextNameTableByte();
break;
case 3: // AT
NextAttributeByte();
break;
case 5: // Tile low
NextTileByte(false);
break;
case 7: // Tile high
NextTileByte(true);
break;
case 0: // 2nd cycle of tile high fetch
if (cycle == 256)
IncrementScrollY();
else
IncrementScrollX();
// Begin rendering a brand new tile
ShiftTileRegister();
break;
}
}
if (cycle == 257)
{
ReloadScrollX();
// 257 - 320
// The tile data for the sprites on the next scanline are fetched here.
// TODO: stagger this over all the cycles as opposed to only on 257
CountSpritesOnLine(scanLine + 1);
}
}
// TODO: this is a hack; VBlank should be cleared on dot 1 of the pre-render line,
// but for some reason we're at 2272-2273 CPU clocks at that time
// (i.e., our PPU timing is off somewhere by 6-9 PPU cycles per frame)
if (F.VBlankStarted && _cpuClocksSinceVBL == 2270)
{
F.VBlankStarted = false;
_cpuClocksSinceVBL = 0;
}
if (cycle == 1)
{
if (scanLine == 241)
{
F.VBlankStarted = true;
if (F.NMIEnabled)
{
_emulator.CPU.TriggerInterrupt(CPU.InterruptType.NMI);
}
}
// Happens at the same time as 1st cycle of NT byte fetch
if (scanLine == -1)
{
// Console.WriteLine(_ppuClocksSinceVBL);
_ppuClocksSinceVBL = 0;
F.VBlankStarted = false;
F.Sprite0Hit = false;
F.SpriteOverflow = false;
}
}
_emulator.Mapper.ProcessCycle(scanLine, cycle);
if (_cpuSyncCounter + 1 == 3)
{
if (F.VBlankStarted)
{
_cpuClocksSinceVBL++;
}
_emulator.CPU.TickFromPPU();
_cpuSyncCounter = 0;
}
else
{
_cpuSyncCounter++;
}
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/PPU.Core.cs.meta
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@ -1,11 +0,0 @@
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130
AxibugEmuOnline.Client/Assets/Runtime/Core/PPU.Memory.cs
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@ -1,130 +0,0 @@
using System;
using System.Runtime.CompilerServices;
namespace AxibugEmuOnline.Client.UNES
{
partial class PPU
{
private readonly byte[] _oam = new byte[0x100];
private readonly byte[] _vRam = new byte[0x2000];
private readonly byte[] _paletteRAM = new byte[0x20];
private static readonly uint[][] _vRamMirrorLookup =
{
new uint[]{0, 0, 1, 1}, // H
new uint[]{0, 1, 0, 1}, // V
new uint[]{0, 1, 2, 3}, // All
new uint[]{0, 0, 0, 0}, // Upper
new uint[]{1, 1, 1, 1}, // Lower
};
private int _lastWrittenRegister;
public void WriteRegister(uint reg, byte val)
{
reg &= 0xF;
_lastWrittenRegister = val & 0xFF;
switch (reg)
{
case 0x0000:
PPUCTRL = val;
return;
case 0x0001:
PPUMASK = val;
return;
case 0x0002: return;
case 0x0003:
OAMADDR = val;
return;
case 0x0004:
OAMDATA = val;
return;
case 0x005:
PPUSCROLL = val;
return;
case 0x0006:
PPUADDR = val;
return;
case 0x0007:
PPUDATA = val;
return;
}
throw new NotImplementedException($"{reg:X4} = {val:X2}");
}
public byte ReadRegister(uint reg)
{
reg &= 0xF;
switch (reg)
{
case 0x0000: return (byte)_lastWrittenRegister;
case 0x0001: return (byte)_lastWrittenRegister;
case 0x0002:
return (byte)PPUSTATUS;
case 0x0003:
return (byte)OAMADDR;
case 0x0004:
return (byte)OAMDATA;
case 0x0005: return (byte)_lastWrittenRegister;
case 0x0006: return (byte)_lastWrittenRegister;
case 0x0007:
return (byte)PPUDATA;
}
throw new NotImplementedException(reg.ToString("X2"));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public uint GetVRamMirror(long address)
{
long entry;
var table = Math.DivRem(address - 0x2000, 0x400, out entry);
return _vRamMirrorLookup[(int)_emulator.Cartridge.MirroringMode][table] * 0x400 + (uint)entry;
}
protected override void InitializeMemoryMap()
{
base.InitializeMemoryMap();
MapReadHandler(0x2000, 0x2FFF, address => _vRam[GetVRamMirror(address)]);
MapReadHandler(0x3000, 0x3EFF, address => _vRam[GetVRamMirror(address - 0x1000)]);
MapReadHandler(0x3F00, 0x3FFF, address =>
{
if (address == 0x3F10 || address == 0x3F14 || address == 0x3F18 || address == 0x3F0C)
{
address -= 0x10;
}
return _paletteRAM[(address - 0x3F00) & 0x1F];
});
MapWriteHandler(0x2000, 0x2FFF, (address, val) => _vRam[GetVRamMirror(address)] = val);
MapWriteHandler(0x3000, 0x3EFF, (address, val) => _vRam[GetVRamMirror(address - 0x1000)] = val);
MapWriteHandler(0x3F00, 0x3FFF, (address, val) =>
{
if (address == 0x3F10 || address == 0x3F14 || address == 0x3F18 || address == 0x3F0C)
{
address -= 0x10;
}
_paletteRAM[(address - 0x3F00) & 0x1F] = val;
});
_emulator.Mapper.InitializeMemoryMap(this);
}
public void PerformDMA(uint from)
{
//Console.WriteLine("OAM DMA");
from <<= 8;
for (uint i = 0; i <= 0xFF; i++)
{
_oam[F.OAMAddress] = (byte)_emulator.CPU.ReadByte(from);
from++;
F.OAMAddress++;
}
_emulator.CPU.Cycle += 513 + _emulator.CPU.Cycle % 2;
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/PPU.Memory.cs.meta
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261
AxibugEmuOnline.Client/Assets/Runtime/Core/PPU.Registers.cs
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@ -1,261 +0,0 @@
using System;
namespace AxibugEmuOnline.Client.UNES
{
partial class PPU
{
public class PPUFlags
{
/* PPUCTRL register */
public bool NMIEnabled;
public bool IsMaster;
public bool TallSpritesEnabled;
public uint PatternTableAddress;
public uint SpriteTableAddress;
public uint VRAMIncrement;
/* PPUMASK register */
public bool GrayscaleEnabled;
public bool DrawLeftBackground;
public bool DrawLeftSprites;
public bool DrawBackground;
public bool DrawSprites;
// Flipped for PAL/Dendy
public bool EmphasizeRed;
public bool EmphasizeGreen;
public bool EmphasizeBlue;
/* PPUSTATUS register */
public bool VBlankStarted;
public bool Sprite0Hit;
public bool SpriteOverflow;
public bool AddressLatch;
/* PPUADDR register */
private uint _busAddress;
public uint BusAddress
{
get => _busAddress;
set => _busAddress = value & 0x3FFF;
}
/* PPUDATA register */
public uint BusData;
/* OAMADDR register */
private uint _oamAddress;
public uint OAMAddress
{
get => _oamAddress;
set => _oamAddress = value & 0xFF;
}
/* PPUSCROLL registers */
[Obsolete]
public uint ScrollX;
[Obsolete]
public uint ScrollY;
public bool RenderingEnabled => DrawBackground || DrawSprites;
}
public PPUFlags F = new PPUFlags();
private uint _v;
public uint V
{
get => _v;
set => _v = value & 0x7FFF;
}
public uint T, X;
public uint CoarseX => V & 0x1F;
public uint CoarseY => (V >> 5) & 0x1F;
public uint FineY => (V >> 12) & 0x7;
public void ReloadScrollX() => V = (V & 0xFBE0) | (T & 0x041F);
public void ReloadScrollY() => V = (V & 0x841F) | (T & 0x7BE0);
public void IncrementScrollX()
{
if ((V & 0x001F) == 31) // if coarse X == 31
{
V &= ~0x001Fu; // coarse X = 0
V ^= 0x0400; // switch horizontal nametable
}
else
{
V += 1; // increment coarse X
}
}
public void IncrementScrollY()
{
if ((V & 0x7000) != 0x7000) // if fine Y < 7
{
V += 0x1000; // increment fine Y
}
else
{
V &= ~0x7000u; // fine Y = 0
uint y = (V & 0x03E0) >> 5; // let y = coarse Y
if (y == 29)
{
y = 0; // coarse Y = 0
V ^= 0x0800;
}
// switch vertical nametable
else if (y == 31)
{
y = 0; // coarse Y = 0, nametable not switched
}
else
{
y += 1; // increment coarse Y
}
V = (V & ~0x03E0u) | (y << 5); // put coarse Y back into v
}
}
public uint PPUCTRL
{
set
{
F.NMIEnabled = (value & 0x80) > 0;
F.IsMaster = (value & 0x40) > 0;
F.TallSpritesEnabled = (value & 0x20) > 0;
F.PatternTableAddress = (value & 0x10) > 0 ? 0x1000u : 0x0000;
F.SpriteTableAddress = (value & 0x08) > 0 ? 0x1000u : 0x0000;
F.VRAMIncrement = (value & 0x04) > 0 ? 32u : 1;
// yyy NN YYYYY XXXXX
// ||| || ||||| +++++--coarse X scroll
// ||| || +++++--------coarse Y scroll
// ||| ++--------------nametable select
// +++-----------------fine Y scroll
T = (T & 0xF3FF) | ((value & 0x3) << 10); // Bits 10-11 hold the base address of the nametable minus $2000
}
}
public uint PPUMASK
{
set
{
F.GrayscaleEnabled = (value & 0x1) > 0;
F.DrawLeftBackground = (value & 0x2) > 0;
F.DrawLeftSprites = (value & 0x4) > 0;
F.DrawBackground = (value & 0x8) > 0;
F.DrawSprites = (value & 0x10) > 0;
F.EmphasizeRed = (value & 0x20) > 0;
F.EmphasizeGreen = (value & 0x40) > 0;
F.EmphasizeBlue = (value & 0x80) > 0;
}
}
/** $2002 **/
public uint PPUSTATUS
{
get
{
F.AddressLatch = false;
var ret = (F.VBlankStarted.AsByte() << 7) |
(F.Sprite0Hit.AsByte() << 6) |
(F.SpriteOverflow.AsByte() << 5) |
(_lastWrittenRegister & 0x1F);
F.VBlankStarted = false;
return (uint)ret;
}
}
/** $2006 **/
public uint PPUADDR
{
set
{
if (F.AddressLatch)
{
T = (T & 0xFF00) | value;
F.BusAddress = T;
V = T;
}
else
{
T = (T & 0x80FF) | ((value & 0x3F) << 8);
}
F.AddressLatch ^= true;
}
}
/** $2005 **/
public uint PPUSCROLL
{
set
{
if (F.AddressLatch)
{
F.ScrollY = value;
T = (T & 0x8FFF) | ((value & 0x7) << 12);
T = (T & 0xFC1F) | (value & 0xF8) << 2;
}
else
{
F.ScrollX = value;
X = value & 0x7;
T = (T & 0xFFE0) | (value >> 3);
}
F.AddressLatch ^= true;
}
}
private uint _readBuffer;
public uint PPUDATA
{
get
{
uint ret = ReadByte(F.BusAddress);
if (F.BusAddress < 0x3F00)
{
uint temp = _readBuffer;
_readBuffer = ret;
ret = temp;
}
else
{
// Palette read should also read VRAM into read buffer
_readBuffer = ReadByte(F.BusAddress - 0x1000);
}
F.BusAddress += F.VRAMIncrement;
return ret;
}
set
{
F.BusData = value;
WriteByte(F.BusAddress, value);
F.BusAddress += F.VRAMIncrement;
}
}
public uint OAMADDR
{
get => F.OAMAddress;
set => F.OAMAddress = value;
}
public uint OAMDATA
{
get => _oam[F.OAMAddress];
set
{
_oam[F.OAMAddress] = (byte)value;
F.OAMAddress++;
}
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/PPU.Registers.cs.meta
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10
AxibugEmuOnline.Client/Assets/Runtime/Core/PPU.cs
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@ -1,10 +0,0 @@
namespace AxibugEmuOnline.Client.UNES
{
public sealed partial class PPU : Addressable
{
public PPU(Emulator emulator) : base(emulator, 0x3FFF)
{
InitializeMemoryMap();
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/PPU.cs.meta
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35
AxibugEmuOnline.Client/Assets/Runtime/Core/Utility.cs
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@ -1,35 +0,0 @@
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
namespace AxibugEmuOnline.Client.UNES
{
public static class Utility
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static byte AsByte(this bool to)
{
unsafe
{
var result = *((byte*) &to);
return result;
}
}
public static void Fill<T>(this T[] arr, T value)
{
for (var i = 0; i < arr.Length; i++)
{
arr[i] = value;
}
}
public static void Map<T>(this IEnumerable<T> enumerator, Action<T> go)
{
foreach (var e in enumerator)
{
go(e);
}
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Core/Utility.cs.meta
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11
AxibugEmuOnline.Client/Assets/Runtime/Input/BaseInput.cs
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@ -1,11 +0,0 @@
using System;
using UnityEngine;
namespace AxibugEmuOnline.Client.UNES.Input
{
public abstract class BaseInput
{
public abstract void HandlerKeyDown(Action<KeyCode> onKeyDown);
public abstract void HandlerKeyUp(Action<KeyCode> onKeyUp);
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Input/BaseInput.cs.meta
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AxibugEmuOnline.Client/Assets/Runtime/Input/DefaultInput.cs
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using System;
using UnityEngine;
namespace AxibugEmuOnline.Client.UNES.Input
{
public class DefaultInput : BaseInput
{
private KeyCode[] _keyCodes
{
get
{
if (_keyCodeCache == null)
{
var array = Enum.GetValues(typeof(KeyCode));
_keyCodeCache = new KeyCode[array.Length];
for (var i = 0; i < array.Length; i++)
{
_keyCodeCache[i] = (KeyCode)array.GetValue(i);
}
}
return _keyCodeCache;
}
}
private KeyCode[] _keyCodeCache;
public override void HandlerKeyDown(Action<KeyCode> onKeyDown)
{
foreach (var keyCode in _keyCodes)
{
if (UnityEngine.Input.GetKeyDown(keyCode))
{
onKeyDown(keyCode);
}
}
}
public override void HandlerKeyUp(Action<KeyCode> onKeyUp)
{
foreach (var keyCode in _keyCodes)
{
if (UnityEngine.Input.GetKeyUp(keyCode))
{
onKeyUp(keyCode);
}
}
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Input/DefaultInput.cs.meta
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8
AxibugEmuOnline.Client/Assets/Runtime/Mapper.meta
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26
AxibugEmuOnline.Client/Assets/Runtime/Mapper/AxROM.cs
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@ -1,26 +0,0 @@
using static AxibugEmuOnline.Client.UNES.Cartridge.VRAMMirroringMode;
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(7)]
public class AxROM : BaseMapper
{
protected int _bankOffset;
private readonly Cartridge.VRAMMirroringMode[] _mirroringModes = { Lower, Upper };
public AxROM(Emulator emulator) : base(emulator)
{
_emulator.Cartridge.MirroringMode = _mirroringModes[0];
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x8000, 0xFFFF, address => _prgROM[_bankOffset + (address - 0x8000)]);
cpu.MapWriteHandler(0x8000, 0xFFFF, (address, val) =>
{
_bankOffset = (val & 0x7) * 0x8000;
_emulator.Cartridge.MirroringMode = _mirroringModes[(val >> 4) & 0x1];
});
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/AxROM.cs.meta
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67
AxibugEmuOnline.Client/Assets/Runtime/Mapper/BaseMapper.cs
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@ -1,67 +0,0 @@
using System;
using System.IO;
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[AttributeUsage(AttributeTargets.Class, Inherited = false)]
public class MapperDef : Attribute
{
public int Id;
public string Name;
public string Description;
public MapperDef()
{
}
public MapperDef(int id)
{
Id = id;
}
}
public abstract class BaseMapper
{
protected readonly Emulator _emulator;
protected readonly byte[] _prgROM;
protected readonly byte[] _prgRAM = new byte[0x2000];
protected readonly byte[] _chrROM;
protected readonly uint _lastBankOffset;
protected BaseMapper(Emulator emulator)
{
_emulator = emulator;
var cart = emulator.Cartridge;
_prgROM = cart.PRGROM;
_chrROM = cart.CHRROM;
_lastBankOffset = (uint) _prgROM.Length - 0x4000;
}
public virtual void InitializeMemoryMap(CPU cpu)
{
}
public virtual void InitializeMemoryMap(PPU ppu)
{
ppu.MapReadHandler(0x0000, 0x1FFF, address => _chrROM[address]);
ppu.MapWriteHandler(0x0000, 0x1FFF, (address, val) => _chrROM[address] = val);
}
public virtual void ProcessCycle(int scanLine, int cycle)
{
}
public virtual byte[] GetSaveData()
{
return _prgRAM;
}
public virtual void LoadSaveData(byte[] saveData)
{
Array.Copy(saveData, _prgRAM, saveData.Length);
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Mapper/BaseMapper.cs.meta
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32
AxibugEmuOnline.Client/Assets/Runtime/Mapper/CNROM.cs
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@ -1,32 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(3)]
public class CNROM : BaseMapper
{
protected int _bankOffset;
public CNROM(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(PPU ppu)
{
ppu.MapReadHandler(0x0000, 0x1FFF, address => _chrROM[_bankOffset + address]);
}
public override void InitializeMemoryMap(CPU cpu)
{
if (_prgROM.Length == 0x8000)
{
cpu.MapReadHandler(0x8000, 0xFFFF, address => _prgROM[address - 0x8000]);
}
else
{
cpu.MapReadHandler(0x8000, 0xBFFF, address => _prgROM[address - 0x8000]);
cpu.MapReadHandler(0xC000, 0xFFFF, address => _prgROM[address - 0xC000]);
}
cpu.MapWriteHandler(0x8000, 0xFFFF, (address, val) => _bankOffset = (val & 0x3) * 0x2000);
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Mapper/CNROM.cs.meta
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27
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Camerica.cs
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@ -1,27 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(71)]
public class Camerica : BaseMapper
{
protected int _prgBankOffset;
public Camerica(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x8000, 0xBFFF, address => _prgROM[_prgBankOffset + (address - 0x8000)]);
cpu.MapReadHandler(0xC000, 0xFFFF, address => _prgROM[_prgROM.Length - 0x4000 + (address - 0xC000)]);
// Actually starts at 0x8000, but use 0x9000 for compatibility w/o submapper
cpu.MapWriteHandler(0x9000, 0x9FFF, (address, val) =>
{
// TODO: Fire Hawk mirroring
});
// The number of bits available vary: 4 for the BF9093, 3 for the BF9097, and 2 for the BF9096.
cpu.MapWriteHandler(0xC000, 0xFFFF, (address, val) => _prgBankOffset = (val & 0xF) * 0x4000 % _prgROM.Length);
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Camerica.cs.meta
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29
AxibugEmuOnline.Client/Assets/Runtime/Mapper/ColorDreams.cs
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@ -1,29 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(11)]
public class ColorDreams : BaseMapper
{
protected int _prgBankOffset;
protected int _chrBankOffset;
public ColorDreams(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(PPU ppu)
{
ppu.MapReadHandler(0x0000, 0x1FFF, address => _chrROM[_chrBankOffset + address]);
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x8000, 0xFFFF, address => _prgROM[_prgBankOffset + (address - 0x8000)]);
cpu.MapWriteHandler(0x8000, 0xFFFF, (address, val) =>
{
_prgBankOffset = (val & 0x3) * 0x8000;
_chrBankOffset = (val >> 4) * 0x2000;
});
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/ColorDreams.cs.meta
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39
AxibugEmuOnline.Client/Assets/Runtime/Mapper/DxROM.cs
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@ -1,39 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(206)]
public class DxROM : MMC3
{
public DxROM(Emulator emulator) : base(emulator)
{
_prgBankingMode = PRGBankingMode.SwitchFix;
_chrBankingMode = CHRBankingMode.TwoFour;
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x8000, 0xFFFF, address => _prgROM[_prgBankOffsets[(address - 0x8000) / 0x2000] + address % 0x2000]);
cpu.MapWriteHandler(0x8000, 0x9FFF, (address, val) =>
{
if ((address & 0x1) == 0)
{
_currentBank = val & 0x7u;
}
else
{
if (_currentBank <= 1) val &= 0x1F;
else if (_currentBank <= 5) val &= 0x3F;
else val &= 0xF;
_banks[_currentBank] = val;
UpdateOffsets();
}
});
}
public override void InitializeMemoryMap(PPU ppu)
{
ppu.MapReadHandler(0x0000, 0x1FFF, address => _chrROM[_chrBankOffsets[address / 0x400] + address % 0x400]);
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/DxROM.cs.meta
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29
AxibugEmuOnline.Client/Assets/Runtime/Mapper/GxROM.cs
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@ -1,29 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(66)]
public class GxROM : BaseMapper
{
protected int _prgBankOffset;
protected int _chrBankOffset;
public GxROM(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(PPU ppu)
{
ppu.MapReadHandler(0x0000, 0x1FFF, address => _chrROM[_chrBankOffset + address]);
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x8000, 0xFFFF, address => _prgROM[_prgBankOffset + (address - 0x8000)]);
cpu.MapWriteHandler(0x8000, 0xFFFF, (address, val) =>
{
_prgBankOffset = ((val >> 4) & 0x3) * 0x8000;
_chrBankOffset = (val & 0x3) * 0x2000;
});
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/GxROM.cs.meta
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29
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Jaleco.cs
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@ -1,29 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(140)]
public class Jaleco : BaseMapper
{
protected int _prgBankOffset;
protected int _chrBankOffset;
public Jaleco(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(PPU ppu)
{
ppu.MapReadHandler(0x0000, 0x1FFF, address => _chrROM[_chrBankOffset + address]);
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x8000, 0xFFFF, address => _prgROM[_prgBankOffset + (address - 0x8000)]);
cpu.MapWriteHandler(0x6000, 0x7FFF, (address, val) =>
{
_prgBankOffset = ((val >> 4) & 0x3) * 0x8000;
_chrBankOffset = (val & 0x3) * 0x2000;
});
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Jaleco.cs.meta
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170
AxibugEmuOnline.Client/Assets/Runtime/Mapper/MMC1.cs
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@ -1,170 +0,0 @@
using static AxibugEmuOnline.Client.UNES.Cartridge.VRAMMirroringMode;
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(1)]
public class MMC1 : BaseMapper
{
// TODO: are MMC1 and MMC1A even different chip types?
public enum ChipType { MMC1, MMC1A, MMC1B, MMC1C }
public enum CHRBankingMode { Single, Double }
public enum PRGBankingMode { Switch32Kb, Switch16KbFixFirst, Switch16KbFixLast }
private readonly Cartridge.VRAMMirroringMode[] _mirroringModes = { Lower, Upper, Vertical, Horizontal };
private readonly ChipType _type;
private CHRBankingMode _chrBankingMode;
private PRGBankingMode _prgBankingMode;
private uint _serialData;
private int _serialPos;
private uint _control;
private readonly uint[] _chrBankOffsets = new uint[2];
private readonly uint[] _chrBanks = new uint[2];
private readonly uint[] _prgBankOffsets = new uint[2];
private uint _prgBank;
private bool _prgRAMEnabled;
private uint? _lastWritePC;
public MMC1(Emulator emulator) : this(emulator, ChipType.MMC1B)
{
}
public MMC1(Emulator emulator, ChipType chipType) : base(emulator)
{
_type = chipType;
if (chipType == ChipType.MMC1B) _prgRAMEnabled = true;
UpdateControl(0x0F);
_emulator.Cartridge.MirroringMode = Horizontal;
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x6000, 0x7FFF, address => _prgRAM[address - 0x6000]);
cpu.MapReadHandler(0x8000, 0xFFFF, address => _prgROM[_prgBankOffsets[(address - 0x8000) / 0x4000] + address % 0x4000]);
cpu.MapWriteHandler(0x6000, 0x7FFF, (address, val) =>
{
// PRG RAM is always enabled on MMC1A
if (_type == ChipType.MMC1A || _prgRAMEnabled)
_prgRAM[address - 0x6000] = val;
});
cpu.MapWriteHandler(0x8000, 0xFFFF, (address, val) =>
{
// Explicitly ignore the second write happening on consecutive cycles
// of an RMW instruction
var cycle = _emulator.CPU.PC;
if (cycle == _lastWritePC)
return;
_lastWritePC = cycle;
if ((val & 0x80) > 0)
{
_serialData = 0;
_serialPos = 0;
UpdateControl(_control | 0x0C);
}
else
{
_serialData |= (uint)((val & 0x1) << _serialPos);
_serialPos++;
if (_serialPos == 5)
{
// Address is incompletely decoded
address &= 0x6000;
if (address == 0x0000)
UpdateControl(_serialData);
else if (address == 0x2000)
UpdateCHRBank(0, _serialData);
else if (address == 0x4000)
UpdateCHRBank(1, _serialData);
else if (address == 0x6000)
UpdatePRGBank(_serialData);
_serialData = 0;
_serialPos = 0;
}
}
});
}
public override void InitializeMemoryMap(PPU ppu)
{
ppu.MapReadHandler(0x0000, 0x1FFF, address => _chrROM[_chrBankOffsets[address / 0x1000] + address % 0x1000]);
ppu.MapWriteHandler(0x0000, 0x1FFF, (address, val) => _chrROM[_chrBankOffsets[address / 0x1000] + address % 0x1000] = val);
}
private void UpdateControl(uint value)
{
_control = value;
_emulator.Cartridge.MirroringMode = _mirroringModes[value & 0x3];
_chrBankingMode = (CHRBankingMode)((value >> 4) & 0x1);
var prgMode = (value >> 2) & 0x3;
// Both 0 and 1 are 32Kb switch
if (prgMode == 0) prgMode = 1;
_prgBankingMode = (PRGBankingMode)(prgMode - 1);
UpdateCHRBank(1, _chrBanks[1]);
UpdateCHRBank(0, _chrBanks[0]);
UpdatePRGBank(_prgBank);
}
private void UpdatePRGBank(uint value)
{
_prgBank = value;
_prgRAMEnabled = (value & 0x10) == 0;
value &= 0xF;
switch (_prgBankingMode)
{
case PRGBankingMode.Switch32Kb:
value >>= 1;
value *= 0x4000;
_prgBankOffsets[0] = value;
_prgBankOffsets[1] = value + 0x4000;
break;
case PRGBankingMode.Switch16KbFixFirst:
_prgBankOffsets[0] = 0;
_prgBankOffsets[1] = value * 0x4000;
break;
case PRGBankingMode.Switch16KbFixLast:
_prgBankOffsets[0] = value * 0x4000;
_prgBankOffsets[1] = _lastBankOffset;
break;
}
}
private void UpdateCHRBank(uint bank, uint value)
{
_chrBanks[bank] = value;
// TODO FIXME: I feel like this branch should only be taken
// when bank == 0, but this breaks Final Fantasy
// When can banking mode change without UpdateCHRBank being called?
if (_chrBankingMode == CHRBankingMode.Single)
{
value = _chrBanks[0];
value >>= 1;
value *= 0x1000;
_chrBankOffsets[0] = value;
_chrBankOffsets[1] = value + 0x1000;
}
else
{
_chrBankOffsets[bank] = value * 0x1000;
}
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/MMC1.cs.meta
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33
AxibugEmuOnline.Client/Assets/Runtime/Mapper/MMC2.cs
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@ -1,33 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(Id = 9, Description = "Mike Tyson's Punch-Out!!")]
public class MMC2 : MMC4
{
public MMC2(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(CPU cpu)
{
base.InitializeMemoryMap(cpu);
cpu.MapReadHandler(0x8000, 0xBFFF, address => _prgROM[_prgBankOffset + (address - 0x8000)]);
cpu.MapReadHandler(0xA000, 0xFFFF, address => _prgROM[_prgROM.Length - 0x4000 - 0x2000 + (address - 0xA000)]);
cpu.MapWriteHandler(0xA000, 0xAFFF, (address, val) => _prgBankOffset = (val & 0xF) * 0x2000);
}
protected override void GetLatch(uint address, out uint latch, out bool? on)
{
base.GetLatch(address, out latch, out on);
// For MMC2, only 0xFD8 and 0xFE8 trigger the latch,
// not the whole range like in MMC4
if (latch == 0 && (address & 0x3) != 0)
{
on = null;
}
}
}
}

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AxibugEmuOnline.Client/Assets/Runtime/Mapper/MMC2.cs.meta
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182
AxibugEmuOnline.Client/Assets/Runtime/Mapper/MMC3.cs
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@ -1,182 +0,0 @@
using static AxibugEmuOnline.Client.UNES.Cartridge.VRAMMirroringMode;
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(4)]
public class MMC3 : BaseMapper
{
// Different PRG RAM write/enable controls
public enum ChipType { MMC3, MMC6 }
public enum CHRBankingMode { TwoFour, FourTwo }
public enum PRGBankingMode { SwitchFix, FixSwitch }
private readonly Cartridge.VRAMMirroringMode[] _mirroringModes = { Vertical, Horizontal };
private readonly ChipType _type;
protected CHRBankingMode _chrBankingMode;
protected PRGBankingMode _prgBankingMode;
protected readonly uint[] _chrBankOffsets = new uint[8];
protected uint[] _prgBankOffsets;
protected readonly uint[] _banks = new uint[8];
protected uint _currentBank;
private uint _irqReloadValue;
private uint _irqCounter;
protected bool _irqEnabled;
private bool _prgRAMEnabled;
public MMC3(Emulator emulator) : this(emulator, ChipType.MMC3)
{
}
public MMC3(Emulator emulator, ChipType chipType) : base(emulator)
{
_type = chipType;
_prgBankOffsets = new uint[] { 0, 0x2000, _lastBankOffset, _lastBankOffset + 0x2000 };
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x6000, 0x7FFF, address => _prgRAM[address - 0x6000]);
cpu.MapReadHandler(0x8000, 0xFFFF, address => _prgROM[_prgBankOffsets[(address - 0x8000) / 0x2000] + address % 0x2000]);
cpu.MapWriteHandler(0x6000, 0xFFFF, WriteByte);
}
public override void InitializeMemoryMap(PPU ppu)
{
ppu.MapReadHandler(0x0000, 0x1FFF, address => _chrROM[_chrBankOffsets[address / 0x400] + address % 0x400]);
ppu.MapWriteHandler(0x0000, 0x1FFF, (address, val) => _chrROM[_chrBankOffsets[address / 0x400] + address % 0x400] = val);
}
public override void ProcessCycle(int scanLine, int cycle)
{
if (_emulator.PPU.F.RenderingEnabled && cycle == 260 && (0 <= scanLine && scanLine < 240 || scanLine == -1))
{
if (_irqCounter == 0)
{
_irqCounter = _irqReloadValue;
}
else
{
_irqCounter--;
if (_irqEnabled && _irqCounter == 0)
{
_emulator.CPU.TriggerInterrupt(CPU.InterruptType.IRQ);
}
}
}
}
protected void WriteByte(uint addr, byte value)
{
bool even = (addr & 0x1) == 0;
if (addr < 0x8000)
{
if (_prgRAMEnabled)
{
_prgRAM[addr - 0x6000] = value;
}
}
else if (addr < 0xA000)
{
if (even)
{
_currentBank = value & 0x7u;
_prgBankingMode = (PRGBankingMode)((value >> 6) & 0x1);
_chrBankingMode = (CHRBankingMode)((value >> 7) & 0x1);
}
else
{
_banks[_currentBank] = value;
}
UpdateOffsets();
}
else if (addr < 0xC000)
{
if (even)
{
_emulator.Cartridge.MirroringMode = _mirroringModes[value & 0x1];
}
else
{
_prgRAMEnabled = (value & 0xC0) == 0x80;
}
}
else if (addr < 0xE000)
{
if (even)
{
_irqReloadValue = value;
}
else
{
_irqCounter = 0;
}
}
else
{
_irqEnabled = !even;
}
}
protected void UpdateOffsets()
{
switch (_prgBankingMode)
{
case PRGBankingMode.SwitchFix:
_prgBankOffsets[0] = _banks[6] * 0x2000;
_prgBankOffsets[1] = _banks[7] * 0x2000;
_prgBankOffsets[2] = _lastBankOffset;
_prgBankOffsets[3] = _lastBankOffset + 0x2000;
break;
case PRGBankingMode.FixSwitch:
_prgBankOffsets[0] = _lastBankOffset;
_prgBankOffsets[1] = _banks[7] * 0x2000;
_prgBankOffsets[2] = _banks[6] * 0x2000;
_prgBankOffsets[3] = _lastBankOffset + 0x2000;
break;
}
switch (_chrBankingMode)
{
case CHRBankingMode.TwoFour:
_chrBankOffsets[0] = _banks[0] & 0xFE;
_chrBankOffsets[1] = _banks[0] | 0x01;
_chrBankOffsets[2] = _banks[1] & 0xFE;
_chrBankOffsets[3] = _banks[1] | 0x01;
_chrBankOffsets[4] = _banks[2];
_chrBankOffsets[5] = _banks[3];
_chrBankOffsets[6] = _banks[4];
_chrBankOffsets[7] = _banks[5];
break;
case CHRBankingMode.FourTwo:
_chrBankOffsets[0] = _banks[2];
_chrBankOffsets[1] = _banks[3];
_chrBankOffsets[2] = _banks[4];
_chrBankOffsets[3] = _banks[5];
_chrBankOffsets[4] = _banks[0] & 0xFE;
_chrBankOffsets[5] = _banks[0] | 0x01;
_chrBankOffsets[6] = _banks[1] & 0xFE;
_chrBankOffsets[7] = _banks[1] | 0x01;
break;
}
for (var i = 0; i < _prgBankOffsets.Length; i++)
{
_prgBankOffsets[i] %= (uint)_prgROM.Length;
}
for (var i = 0; i < _chrBankOffsets.Length; i++)
{
_chrBankOffsets[i] = (uint) (_chrBankOffsets[i] * 0x400 % _chrROM.Length);
}
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/MMC3.cs.meta
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73
AxibugEmuOnline.Client/Assets/Runtime/Mapper/MMC4.cs
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@ -1,73 +0,0 @@
using static AxibugEmuOnline.Client.UNES.Cartridge.VRAMMirroringMode;
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(10)]
public class MMC4 : BaseMapper
{
protected readonly Cartridge.VRAMMirroringMode[] _mirroringModes = { Vertical, Horizontal };
protected int _prgBankOffset;
protected int[,] _chrBankOffsets = new int[2, 2];
protected bool[] _latches = new bool[2];
public MMC4(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x6000, 0x7FFF, address => _prgRAM[address - 0x6000]);
cpu.MapReadHandler(0x8000, 0xBFFF, address => _prgROM[_prgBankOffset + (address - 0x8000)]);
cpu.MapReadHandler(0xC000, 0xFFFF, address => _prgROM[_prgROM.Length - 0x4000 + (address - 0xC000)]);
cpu.MapWriteHandler(0x6000, 0x7FFF, (address, val) => _prgRAM[address - 0x6000] = val);
cpu.MapWriteHandler(0xA000, 0xAFFF, (address, val) => _prgBankOffset = (val & 0xF) * 0x4000);
cpu.MapWriteHandler(0xB000, 0xEFFF, (address, val) =>
{
var bank = (address - 0xB000) / 0x2000;
var latch = ((address & 0x1FFF) == 0).AsByte();
_chrBankOffsets[bank, latch] = (val & 0x1F) * 0x1000;
});
cpu.MapWriteHandler(0xF000, 0xFFFF, (address, val) => _emulator.Cartridge.MirroringMode = _mirroringModes[val & 0x1]);
}
public override void InitializeMemoryMap(PPU ppu)
{
ppu.MapReadHandler(0x0000, 0x1FFF, address =>
{
var bank = address / 0x1000;
var ret = _chrROM[_chrBankOffsets[bank, _latches[bank].AsByte()] + address % 0x1000];
if ((address & 0x08) > 0)
{
GetLatch(address, out uint latch, out bool? on);
if (on != null)
{
_latches[latch] = (bool)on;
}
}
return ret;
});
}
protected virtual void GetLatch(uint address, out uint latch, out bool? on)
{
latch = (address >> 12) & 0x1;
on = null;
address = (address >> 4) & 0xFF;
if (address == 0xFE)
{
on = true;
}
else if (address == 0xFD)
{
on = false;
}
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/MMC4.cs.meta
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17
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Mapper094.cs
View File

@ -1,17 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(Id = 94, Description = "Senjou no Ookami")]
public class Mapper094 : UxROM
{
public Mapper094(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(CPU cpu)
{
base.InitializeMemoryMap(cpu);
cpu.MapWriteHandler(0x8000, 0xFFFF, (address, val) => _bankOffset = (val & 0x1C) << 12);
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Mapper094.cs.meta
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11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Mapper155.cs
View File

@ -1,11 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(Id = 155, Description = "MMC1A")]
public class Mapper155 : MMC1
{
// Mapper for games requiring MMC1A
public Mapper155(Emulator emulator) : base(emulator, ChipType.MMC1A)
{
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Mapper155.cs.meta
View File

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21
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Mapper180.cs
View File

@ -1,21 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
// Mapper used strictly for Crazy Climber; logic is slighly different
[MapperDef(Id = 180, Description = "Crazy Climber")]
public class Mapper180 : UxROM
{
public Mapper180(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(CPU cpu)
{
base.InitializeMemoryMap(cpu);
// $8000-$C000 is fixed to *first* bank
cpu.MapReadHandler(0x8000, 0xBFFF, address => _prgROM[address - 0x8000]);
// $C000-$FFFF is switchable, controlled the same as UxROM
cpu.MapReadHandler(0xC000, 0xFFFF, address => _prgROM[_bankOffset + (address - 0xC000)]);
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Mapper180.cs.meta
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23
AxibugEmuOnline.Client/Assets/Runtime/Mapper/NROM.cs
View File

@ -1,23 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(0)]
public class NROM : BaseMapper
{
private readonly byte[] _addressSpace = new byte[0x2000 + 0x8000]; // Space for $2000 VRAM + $8000 PRG
public NROM(Emulator emulator) : base(emulator)
{
for (var i = 0; i < 0x8000; i++)
{
var offset = _emulator.Cartridge.PRGROMSize == 0x4000 ? i & 0xBFFF : i;
_addressSpace[0x2000 + i] = _prgROM[offset];
}
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x6000, 0xFFFF, address => _addressSpace[address - 0x6000]);
cpu.MapWriteHandler(0x6000, 0x7FFF, (address, val) => _addressSpace[address - 0x6000] = val);
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/NROM.cs.meta
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32
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Nina003006.cs
View File

@ -1,32 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(79)]
public class Nina003006 : BaseMapper
{
protected int _prgBankOffset;
protected int _chrBankOffset;
public Nina003006(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(PPU ppu)
{
ppu.MapReadHandler(0x0000, 0x1FFF, address => _chrROM[_chrBankOffset + address]);
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x8000, 0xFFFF, address => _prgROM[_prgBankOffset + (address - 0x8000)]);
cpu.MapWriteHandler(0x4000, 0x5FFF, (address, val) =>
{
if ((address & 0b1110_0001_0000_0000) == 0b0100_0001_0000_0000)
{
_prgBankOffset = ((val >> 4) & 0x3) * 0x8000;
_chrBankOffset = (val & 0x3) * 0x2000;
}
});
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/Nina003006.cs.meta
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22
AxibugEmuOnline.Client/Assets/Runtime/Mapper/UxROM.cs
View File

@ -1,22 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(2)]
public class UxROM : BaseMapper
{
protected int _bankOffset;
public UxROM(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x6000, 0x7FFF, address => _prgRAM[address - 0x6000]);
cpu.MapReadHandler(0x8000, 0xBFFF, address => _prgROM[_bankOffset + (address - 0x8000)]);
cpu.MapReadHandler(0xC000, 0xFFFF, address => _prgROM[_prgROM.Length - 0x4000 + (address - 0xC000)]);
cpu.MapWriteHandler(0x6000, 0x7FFF, (address, val) => _prgRAM[address - 0x6000] = val);
cpu.MapWriteHandler(0x8000, 0xFFFF, (address, val) => _bankOffset = (val & 0xF) * 0x4000);
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Mapper/UxROM.cs.meta
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8
AxibugEmuOnline.Client/Assets/Runtime/Renderer.meta
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13
AxibugEmuOnline.Client/Assets/Runtime/Renderer/IRenderer.cs
View File

@ -1,13 +0,0 @@
namespace AxibugEmuOnline.Client.UNES.Renderer
{
public interface IRenderer
{
string Name { get; }
void HandleRender();
void Init(UNESBehaviour nes);
void End();
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Renderer/IRenderer.cs.meta
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71
AxibugEmuOnline.Client/Assets/Runtime/Renderer/UnityRenderer.cs
View File

@ -1,71 +0,0 @@
using System.Runtime.InteropServices;
using UnityEngine;
namespace AxibugEmuOnline.Client.UNES.Renderer
{
public class UnityRenderer : IRenderer
{
public UNESBehaviour UnesBehaviour;
public RenderTexture RenderTexture;
public string Name => "Unity";
private Texture2D _drawTexture;
private Color[] _pixelCache;
private Texture2D _clearTexture;
public void Init(UNESBehaviour nes)
{
UnesBehaviour = nes;
RenderTexture = nes.RenderTexture;
_drawTexture = new Texture2D(UNESBehaviour.GameWidth, UNESBehaviour.GameHeight);
_pixelCache = new Color[UNESBehaviour.GameWidth * UNESBehaviour.GameHeight];
_clearTexture = new Texture2D(1, 1);
_clearTexture.SetPixel(0, 0, Color.clear);
_clearTexture.Apply();
}
public void HandleRender()
{
if (RenderTexture.filterMode != UnesBehaviour.FilterMode)
{
RenderTexture.filterMode = UnesBehaviour.FilterMode;
}
for (var y = 0; y < UNESBehaviour.GameHeight; y++)
{
for (var x = 0; x < UNESBehaviour.GameWidth; x++)
{
var rawIndex = UNESBehaviour.GameWidth * y + x;
var color = GetColor(UnesBehaviour.RawBitmap[rawIndex]);
var texIndex = UNESBehaviour.GameWidth * (UNESBehaviour.GameHeight - y - 1) + x;
_pixelCache[texIndex] = color;
}
}
_drawTexture.SetPixels(_pixelCache);
_drawTexture.Apply();
Graphics.Blit(_drawTexture, RenderTexture);
}
public Color GetColor(uint value)
{
var r = 0xFF0000 & value;
r >>= 16;
var b = 0xFF & value;
var g = 0xFF00 & value;
g >>= 8;
var color = new Color(r / 255f, g / 255f, b / 255f);
return color;
}
public void End()
{
Graphics.Blit(_clearTexture, RenderTexture);
}
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/Renderer/UnityRenderer.cs.meta
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281
AxibugEmuOnline.Client/Assets/Runtime/UNESBehaviour.cs
View File

@ -1,281 +0,0 @@
using System;
using System.Diagnostics;
using System.Threading;
using UnityEngine;
using AxibugEmuOnline.Client.UNES.Controller;
using AxibugEmuOnline.Client.UNES.Input;
using AxibugEmuOnline.Client.UNES.Renderer;
using AxibugEmuOnline.Client.ClientCore;
using AxibugEmuOnline.Client.Sample;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
namespace AxibugEmuOnline.Client.UNES
{
public class UNESBehaviour : MonoBehaviour
{
[Header("Render")]
public RenderTexture RenderTexture;
public const int GameWidth = 256;
public const int GameHeight = 240;
public FilterMode FilterMode = FilterMode.Point;
public bool LogicThread = true;
[Header("Input")]
public KeyConfig KeyConfig;
public BaseInput Input { get; set; }
public IRenderer Renderer { get; set; }
public uint[] RawBitmap { get; set; } = new uint[GameWidth * GameHeight];
public bool Ready { get; set; }
public bool GameStarted { get; set; }
private bool _rendererRunning = true;
private IController _controller;
private Emulator _emu;
private bool _suspended;
private Thread _renderThread;
private int _activeSpeed = 1;
public void Boot(byte[] romData)
{
InitInput();
InitRenderer();
BootCartridge(romData);
}
public void Boot_Obs()
{
InitInput();
InitRenderer();
BootCartridge_Obs();
}
public void LoadSaveData(byte[] saveData)
{
_emu?.Mapper.LoadSaveData(saveData);
}
public byte[] GetSaveData()
{
return _emu?.Mapper.GetSaveData();
}
Queue<byte[]> _queue = new Queue<byte[]>();
private void BootCartridge(byte[] romData)
{
_emu = new Emulator(romData, _controller);
if (LogicThread)
{
_renderThread = new Thread(() =>
{
GameStarted = true;
var s = new Stopwatch();
var s0 = new Stopwatch();
while (_rendererRunning)
{
if (_suspended)
{
Thread.Sleep(100);
continue;
}
s.Restart();
for (var i = 0; i < 60 && !_suspended; i++)
{
s0.Restart();
lock (RawBitmap)
{
_emu.PPU.ProcessFrame();
RawBitmap = _emu.PPU.RawBitmap;
//塞进发送队列
_queue.Enqueue(_emu.PPU.RawBitmap_paletteIdxCache);
}
s0.Stop();
Thread.Sleep(Math.Max((int)(980 / 60.0 - s0.ElapsedMilliseconds), 0) / _activeSpeed);
}
s.Stop();
}
});
_renderThread.Start();
}
else
{
GameStarted = true;
}
}
private void BootCartridge_Obs()
{
if (LogicThread)
{
_renderThread = new Thread(() =>
{
GameStarted = true;
var s = new Stopwatch();
var s0 = new Stopwatch();
while (_rendererRunning)
{
if (_suspended)
{
Thread.Sleep(100);
continue;
}
s.Restart();
for (var i = 0; i < 60 && !_suspended; i++)
{
s0.Restart();
lock (RawBitmap)
{
RawBitmap = AppAxibugEmuOnline.game.RawBitmap;
}
s0.Stop();
Thread.Sleep(Math.Max((int)(980 / 60.0 - s0.ElapsedMilliseconds), 0) / _activeSpeed);
}
s.Stop();
}
});
_renderThread.Start();
}
else
{
GameStarted = true;
}
}
#region Monobehaviour
public void Awake()
{
}
public void OnEnable()
{
}
public void OnDisable()
{
_rendererRunning = false;
Renderer?.End();
}
public void Update()
{
if (!GameStarted) return;
UpdateInput();
if (UNESTest.instance.PlayerP1)
{
UpdateRender();
}
else
{
UpdateRender_Obs();
}
}
#endregion
#region Input
private void InitInput()
{
_controller = new NesController(this);
Input = new DefaultInput();
}
public void UpdateInput()
{
Input.HandlerKeyDown(keyCode =>
{
switch (keyCode)
{
case KeyCode.F2:
_suspended = false;
break;
case KeyCode.F3:
_suspended = true;
break;
default:
_controller.PressKey(keyCode);
break;
}
});
Input.HandlerKeyUp(keyCode =>
{
_controller.ReleaseKey(keyCode);
});
}
#endregion
#region Render
public void UpdateRender()
{
while (_queue.Count() > 0)
{
//发送
AppAxibugEmuOnline.game.SendScreen(_queue.Dequeue());
}
if (!_rendererRunning) return;
if (_suspended) return;
if (!LogicThread)
{
_emu.PPU.ProcessFrame();
RawBitmap = _emu.PPU.RawBitmap;
Renderer.HandleRender();
}
else
{
lock (RawBitmap)
{
Renderer.HandleRender();
}
}
}
public void UpdateRender_Obs()
{
if (!_rendererRunning) return;
if (_suspended) return;
if (!LogicThread)
{
RawBitmap = AppAxibugEmuOnline.game.RawBitmap;
Renderer.HandleRender();
}
else
{
lock (RawBitmap)
{
Renderer.HandleRender();
}
}
}
private void InitRenderer()
{
Renderer?.End();
Renderer = new UnityRenderer();
Renderer.Init(this);
}
#endregion
}
}

11
AxibugEmuOnline.Client/Assets/Runtime/UNESBehaviour.cs.meta
View File

@ -1,11 +0,0 @@
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78
AxibugEmuOnline.Client/Assets/Scene/AxibugEmuOnline.Client.unity
View File

@ -282,7 +282,7 @@ Transform:
m_ConstrainProportionsScale: 0
m_Children: []
m_Father: {fileID: 0}
m_RootOrder: 4
m_RootOrder: 3
m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
--- !u!1 &622947734
GameObject:
@ -535,85 +535,13 @@ RectTransform:
m_Children:
- {fileID: 622947735}
m_Father: {fileID: 0}
m_RootOrder: 3
m_RootOrder: 2
m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
m_AnchorMin: {x: 0, y: 0}
m_AnchorMax: {x: 0, y: 0}
m_AnchoredPosition: {x: 0, y: 0}
m_SizeDelta: {x: 0, y: 0}
m_Pivot: {x: 0, y: 0}
--- !u!1 &1434955706
GameObject:
m_ObjectHideFlags: 0
m_CorrespondingSourceObject: {fileID: 0}
m_PrefabInstance: {fileID: 0}
m_PrefabAsset: {fileID: 0}
serializedVersion: 6
m_Component:
- component: {fileID: 1434955708}
- component: {fileID: 1434955709}
- component: {fileID: 1434955707}
m_Layer: 0
m_Name: UNES
m_TagString: Untagged
m_Icon: {fileID: 0}
m_NavMeshLayer: 0
m_StaticEditorFlags: 0
m_IsActive: 1
--- !u!114 &1434955707
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m_CorrespondingSourceObject: {fileID: 0}
m_PrefabInstance: {fileID: 0}
m_PrefabAsset: {fileID: 0}
m_GameObject: {fileID: 1434955706}
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m_EditorHideFlags: 0
m_Script: {fileID: 11500000, guid: 5948479853ec1194497c60babb6bc213, type: 3}
m_Name:
m_EditorClassIdentifier:
RenderTexture: {fileID: 8400000, guid: 6645567e4c11d9447b1aee2406f681c5, type: 2}
FilterMode: 1
LogicThread: 1
KeyConfig:
Up: 119
Down: 115
Left: 97
Right: 100
A: 107
B: 106
Start: 98
Select: 118
Debug: 112
--- !u!4 &1434955708
Transform:
m_ObjectHideFlags: 0
m_CorrespondingSourceObject: {fileID: 0}
m_PrefabInstance: {fileID: 0}
m_PrefabAsset: {fileID: 0}
m_GameObject: {fileID: 1434955706}
m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
m_LocalPosition: {x: 0, y: 0, z: 0}
m_LocalScale: {x: 1, y: 1, z: 1}
m_ConstrainProportionsScale: 0
m_Children: []
m_Father: {fileID: 0}
m_RootOrder: 2
m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
--- !u!114 &1434955709
MonoBehaviour:
m_ObjectHideFlags: 0
m_CorrespondingSourceObject: {fileID: 0}
m_PrefabInstance: {fileID: 0}
m_PrefabAsset: {fileID: 0}
m_GameObject: {fileID: 1434955706}
m_Enabled: 1
m_EditorHideFlags: 0
m_Script: {fileID: 11500000, guid: 8e94e6b3864b9034b89b70aa411a2894, type: 3}
m_Name:
m_EditorClassIdentifier:
RomFile: Mario
PlayerP1: 0
--- !u!1 &1498586261
GameObject:
m_ObjectHideFlags: 3
@ -656,5 +584,5 @@ Transform:
m_ConstrainProportionsScale: 0
m_Children: []
m_Father: {fileID: 0}
m_RootOrder: 5
m_RootOrder: 4
m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}

6
AxibugEmuOnline.Client/Assets/Script/AppAxibugEmuOnline.cs
View File

@ -17,7 +17,8 @@ namespace AxibugEmuOnline.Client.ClientCore
public static AppLogin login;
public static AppChat chat;
public static UserDataManager user;
public static AppGame game;
public static AppNetGame netgame;
public static AppEmu emu;
public static void Init()
{
@ -27,7 +28,8 @@ namespace AxibugEmuOnline.Client.ClientCore
login = new AppLogin();
chat = new AppChat();
user = new UserDataManager();
game = new AppGame();
emu = new AppEmu();
netgame = new AppNetGame();
}
public static bool Connect(string IP, int port)

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