95 lines
2.0 KiB
C#
95 lines
2.0 KiB
C#
// <copyright file="Register16.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 EightBit
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{
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using System.Diagnostics;
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[DebuggerDisplay("Word = {Word}")]
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public class Register16
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{
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private byte low;
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private byte high;
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public Register16(byte low, byte high)
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{
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this.Low = low;
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this.High = high;
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}
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public Register16(ushort value)
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{
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this.Low = Chip.LowByte(value);
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this.High = Chip.HighByte(value);
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}
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public Register16()
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: this((ushort)0)
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{
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}
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public Register16(int value)
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: this((ushort)value)
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{
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}
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public Register16(uint value)
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: this((ushort)value)
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{
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}
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public Register16(byte low)
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: this(low, 0)
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{
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}
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public Register16(Register16 rhs)
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{
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this.Low = rhs.Low;
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this.High = rhs.High;
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}
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public ushort Word
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{
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get => Chip.MakeWord(this.Low, this.High);
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set
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{
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this.Low = Chip.LowByte(value);
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this.High = Chip.HighByte(value);
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}
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}
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public ref byte Low => ref this.low;
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public ref byte High => ref this.high;
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public static bool operator ==(Register16 left, Register16 right) => left.Equals(right);
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public static bool operator !=(Register16 left, Register16 right) => !(left == right);
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public override int GetHashCode() => this.Word;
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public override bool Equals(object? obj)
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{
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return Equals(obj as Register16);
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}
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public bool Equals(Register16? rhs)
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{
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if (ReferenceEquals(this, rhs))
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{
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return true;
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}
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if (rhs is null)
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{
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return false;
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}
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return rhs.Low == this.Low && rhs.High == this.High;
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}
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}
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}
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