EightBitNet/EightBit/InputOutput.cs
Adrian Conlon 0e8a530573 More analysis suggested tidy ups.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2019-02-06 23:41:56 +00:00

58 lines
1.7 KiB
C#

// <copyright file="InputOutput.cs" company="Adrian Conlon">
// Copyright (c) Adrian Conlon. All rights reserved.
// </copyright>
namespace EightBit
{
using System;
public sealed class InputOutput
{
private readonly byte[] input = new byte[0x100];
private readonly byte[] output = new byte[0x100];
public InputOutput()
{
}
public event EventHandler<PortEventArgs> ReadingPort;
public event EventHandler<PortEventArgs> ReadPort;
public event EventHandler<PortEventArgs> WritingPort;
public event EventHandler<PortEventArgs> WrittenPort;
public byte Read(byte port) => this.ReadInputPort(port);
public void Write(byte port, byte value) => this.WriteOutputPort(port, value);
public byte ReadInputPort(byte port)
{
this.OnReadingPort(port);
var value = this.input[port];
this.OnReadPort(port);
return value;
}
public void WriteInputPort(byte port, byte value) => this.input[port] = value;
public byte ReadOutputPort(byte port) => this.output[port];
public void WriteOutputPort(byte port, byte value)
{
this.OnWritingPort(port);
this.output[port] = value;
this.OnWrittenPort(port);
}
private void OnReadingPort(byte port) => this.ReadingPort?.Invoke(this, new PortEventArgs(port));
private void OnReadPort(byte port) => this.ReadPort?.Invoke(this, new PortEventArgs(port));
private void OnWritingPort(byte port) => this.WritingPort?.Invoke(this, new PortEventArgs(port));
private void OnWrittenPort(byte port) => this.WrittenPort?.Invoke(this, new PortEventArgs(port));
}
}