123 lines
3.7 KiB
C#
123 lines
3.7 KiB
C#
// <copyright file="Board.cs" company="Adrian Conlon">
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// Copyright (c) Adrian Conlon. All rights reserved.
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// </copyright>
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namespace M6502.Test
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{
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using System.Text;
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using EightBit;
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internal class Board : Bus
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{
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private readonly Configuration configuration;
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private readonly Ram ram;
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private readonly Symbols symbols;
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private readonly Disassembler disassembler;
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private readonly MemoryMapping mapping;
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private ushort oldPC;
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public Board(Configuration configuration)
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{
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this.configuration = configuration;
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this.ram = new Ram(0x10000);
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this.CPU = new M6502(this);
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this.symbols = new Symbols();
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this.disassembler = new Disassembler(this, this.CPU, this.symbols);
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this.mapping = new MemoryMapping(this.ram, 0x0000, (ushort)Mask.Sixteen, AccessLevel.ReadWrite);
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this.oldPC = (ushort)Mask.Sixteen;
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}
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public M6502 CPU { get; }
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public override void RaisePOWER()
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{
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base.RaisePOWER();
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this.CPU.RaisePOWER();
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this.CPU.RaiseRESET();
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this.CPU.RaiseINT();
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this.CPU.RaiseNMI();
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this.CPU.RaiseSO();
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this.CPU.RaiseRDY();
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}
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public override void LowerPOWER()
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{
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this.CPU.LowerPOWER();
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base.LowerPOWER();
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}
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public override void Initialize()
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{
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var programPath = this.configuration.RomDirectory + "/" + this.configuration.Program;
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var loadAddress = this.configuration.LoadAddress;
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this.ram.Load(programPath, loadAddress.Word);
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if (this.configuration.DebugMode)
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{
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this.CPU.ExecutingInstruction += this.CPU_ExecutingInstruction;
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}
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this.CPU.ExecutedInstruction += this.CPU_ExecutedInstruction;
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this.Poke(0x00, 0x4c);
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this.CPU.PokeWord(0x01, this.configuration.StartAddress);
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}
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public override MemoryMapping Mapping(ushort absolute) => this.mapping;
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private void CPU_ExecutedInstruction(object sender, System.EventArgs e)
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{
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var pc = this.CPU.PC.Word;
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if (this.oldPC != pc)
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{
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this.oldPC = pc;
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}
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else
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{
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this.LowerPOWER();
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var test = this.Peek(0x0200);
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System.Console.Out.WriteLine();
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System.Console.Out.Write("** Test=");
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System.Console.Out.WriteLine(Disassembler.DumpByteValue(test));
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}
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}
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private void CPU_ExecutingInstruction(object sender, System.EventArgs e)
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{
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var address = this.CPU.PC.Word;
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var output = new StringBuilder();
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output.Append("PC=");
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output.Append(Disassembler.DumpWordValue(address));
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output.Append(":");
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output.Append("P=");
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output.Append(Disassembler.DumpFlags(this.CPU.P));
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output.Append(", ");
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output.Append("A=");
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output.Append(Disassembler.DumpByteValue(this.CPU.A));
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output.Append(", ");
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output.Append("X=");
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output.Append(Disassembler.DumpByteValue(this.CPU.X));
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output.Append(", ");
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output.Append("Y=");
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output.Append(Disassembler.DumpByteValue(this.CPU.Y));
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output.Append(", ");
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output.Append("S=");
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output.Append(Disassembler.DumpByteValue(this.CPU.S));
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output.Append("\t");
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output.Append(this.disassembler.Disassemble(address));
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System.Console.Out.WriteLine(output.ToString());
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}
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}
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}
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