EightBitNet/EightBit/InputOutput.cs

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C#
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namespace EightBit
{
using System;
public sealed class InputOutput
{
private byte[] input = new byte[0x100];
private 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;
byte Read(byte port) => ReadInputPort(port);
void Write(byte port, byte value) => WriteOutputPort(port, value);
byte ReadInputPort(byte port)
{
OnReadingPort(port);
var value = input[port];
OnReadPort(port);
return value;
}
void WriteInputPort(byte port, byte value) => input[port] = value;
byte ReadOutputPort(byte port) => output[port];
void WriteOutputPort(byte port, byte value)
{
OnWritingPort(port);
output[port] = value;
OnWrittenPort(port);
}
private void OnReadingPort(byte port) => ReadingPort?.Invoke(this, new PortEventArgs(port));
private void OnReadPort(byte port) => ReadPort?.Invoke(this, new PortEventArgs(port));
private void OnWritingPort(byte port) => WritingPort?.Invoke(this, new PortEventArgs(port));
private void OnWrittenPort(byte port) => WrittenPort?.Invoke(this, new PortEventArgs(port));
}
}