154 lines
3.8 KiB
C#
154 lines
3.8 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
|
|
using BizHawk.Emulation.Common;
|
|
|
|
namespace BizHawk.Emulation.Cores.Atari.Atari2600
|
|
{
|
|
public partial class Atari2600 : IDebuggable
|
|
{
|
|
public IDictionary<string, RegisterValue> GetCpuFlagsAndRegisters()
|
|
{
|
|
return new Dictionary<string, RegisterValue>
|
|
{
|
|
["A"] = Cpu.A,
|
|
["X"] = Cpu.X,
|
|
["Y"] = Cpu.Y,
|
|
["S"] = Cpu.S,
|
|
["PC"] = Cpu.PC,
|
|
|
|
["Flag C"] = Cpu.FlagC,
|
|
["Flag Z"] = Cpu.FlagZ,
|
|
["Flag I"] = Cpu.FlagI,
|
|
["Flag D"] = Cpu.FlagD,
|
|
|
|
["Flag B"] = Cpu.FlagB,
|
|
["Flag V"] = Cpu.FlagV,
|
|
["Flag N"] = Cpu.FlagN,
|
|
["Flag T"] = Cpu.FlagT
|
|
};
|
|
}
|
|
|
|
public void SetCpuRegister(string register, int value)
|
|
{
|
|
switch (register)
|
|
{
|
|
default:
|
|
throw new InvalidOperationException();
|
|
case "A":
|
|
Cpu.A = (byte)value;
|
|
break;
|
|
case "X":
|
|
Cpu.X = (byte)value;
|
|
break;
|
|
case "Y":
|
|
Cpu.Y = (byte)value;
|
|
break;
|
|
case "S":
|
|
Cpu.S = (byte)value;
|
|
break;
|
|
case "PC":
|
|
Cpu.PC = (ushort)value;
|
|
break;
|
|
case "Flag I":
|
|
Cpu.FlagI = value > 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
public IMemoryCallbackSystem MemoryCallbacks { get; } = new MemoryCallbackSystem(new[] { "System Bus" });
|
|
|
|
public bool CanStep(StepType type)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
[FeatureNotImplemented]
|
|
public void Step(StepType type)
|
|
{
|
|
throw new NotImplementedException();
|
|
}
|
|
|
|
|
|
public int TotalExecutedCycles => Cpu.TotalExecutedCycles;
|
|
|
|
private int JSRCount = 0;
|
|
|
|
private const byte JSR = 0x20;
|
|
private const byte RTS = 0x60;
|
|
|
|
// the opsize table is used to quickly grab the instruction sizes (in bytes)
|
|
private readonly byte[] opsize =
|
|
{
|
|
/*0x00*/ 1,2,0,0,0,2,2,0,1,2,1,0,0,3,3,0,
|
|
/*0x10*/ 2,2,0,0,0,2,2,0,1,3,0,0,0,3,3,0,
|
|
/*0x20*/ 3,2,0,0,2,2,2,0,1,2,1,0,3,3,3,0,
|
|
/*0x30*/ 2,2,0,0,0,2,2,0,1,3,0,0,0,3,3,0,
|
|
/*0x40*/ 1,2,0,0,0,2,2,0,1,2,1,0,3,3,3,0,
|
|
/*0x50*/ 2,2,0,0,0,2,2,0,1,3,0,0,0,3,3,0,
|
|
/*0x60*/ 1,2,0,0,0,2,2,0,1,2,1,0,3,3,3,0,
|
|
/*0x70*/ 2,2,0,0,0,2,2,0,1,3,0,0,0,3,3,0,
|
|
/*0x80*/ 0,2,0,0,2,2,2,0,1,0,1,0,3,3,3,0,
|
|
/*0x90*/ 2,2,0,0,2,2,2,0,1,3,1,0,0,3,0,0,
|
|
/*0xA0*/ 2,2,2,0,2,2,2,0,1,2,1,0,3,3,3,0,
|
|
/*0xB0*/ 2,2,0,0,2,2,2,0,1,3,1,0,3,3,3,0,
|
|
/*0xC0*/ 2,2,0,0,2,2,2,0,1,2,1,0,3,3,3,0,
|
|
/*0xD0*/ 2,2,0,0,0,2,2,0,1,3,0,0,0,3,3,0,
|
|
/*0xE0*/ 2,2,0,0,2,2,2,0,1,2,1,0,3,3,3,0,
|
|
/*0xF0*/ 2,2,0,0,0,2,2,0,1,3,0,0,0,3,3,0
|
|
};
|
|
|
|
|
|
/*the optype table is a quick way to grab the addressing mode for any 6502 opcode
|
|
//
|
|
// 0 = Implied\Accumulator\Immediate\Branch\NULL
|
|
// 1 = (Indirect,X)
|
|
// 2 = Zero Page
|
|
// 3 = Absolute
|
|
// 4 = (Indirect),Y
|
|
// 5 = Zero Page,X
|
|
// 6 = Absolute,Y
|
|
// 7 = Absolute,X
|
|
// 8 = Zero Page,Y
|
|
*/
|
|
private readonly byte[] optype =
|
|
{
|
|
/*0x00*/ 0,1,0,0,0,2,2,0,0,0,0,0,0,3,3,0,
|
|
/*0x10*/ 0,4,0,0,0,5,5,0,0,6,0,0,0,7,7,0,
|
|
/*0x20*/ 0,1,0,0,2,2,2,0,0,0,0,0,3,3,3,0,
|
|
/*0x30*/ 0,4,0,0,0,5,5,0,0,6,0,0,0,7,7,0,
|
|
/*0x40*/ 0,1,0,0,0,2,2,0,0,0,0,0,0,3,3,0,
|
|
/*0x50*/ 0,4,0,0,0,5,5,0,0,6,0,0,0,7,7,0,
|
|
/*0x60*/ 0,1,0,0,0,2,2,0,0,0,0,0,3,3,3,0,
|
|
/*0x70*/ 0,4,0,0,0,5,5,0,0,6,0,0,0,7,7,0,
|
|
/*0x80*/ 0,1,0,0,2,2,2,0,0,0,0,0,3,3,3,0,
|
|
/*0x90*/ 0,4,0,0,5,5,8,0,0,6,0,0,0,7,0,0,
|
|
/*0xA0*/ 0,1,0,0,2,2,2,0,0,0,0,0,3,3,3,0,
|
|
/*0xB0*/ 0,4,0,0,5,5,8,0,0,6,0,0,7,7,6,0,
|
|
/*0xC0*/ 0,1,0,0,2,2,2,0,0,0,0,0,3,3,3,0,
|
|
/*0xD0*/ 0,4,0,0,0,5,5,0,0,6,0,0,0,7,7,0,
|
|
/*0xE0*/ 0,1,0,0,2,2,2,0,0,0,0,0,3,3,3,0,
|
|
/*0xF0*/ 0,4,0,0,0,5,5,0,0,6,0,0,0,7,7,0
|
|
};
|
|
|
|
#region Currently Unused Debug hooks
|
|
|
|
private int CurrentScanLine
|
|
{
|
|
get { return _tia.LineCount; }
|
|
}
|
|
|
|
private bool IsVsync
|
|
{
|
|
get { return _tia.IsVSync; }
|
|
}
|
|
|
|
private bool IsVBlank
|
|
{
|
|
get { return _tia.IsVBlank; }
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|