mirror of
https://github.com/MoleskiCoder/EightBitNet.git
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56 lines
2.0 KiB
C#
56 lines
2.0 KiB
C#
// <copyright file="Chip.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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public class Chip : Device
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{
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protected Chip()
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{
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}
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public static byte SetFlag(byte input, byte flag) => (byte)(input | flag);
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public static byte SetFlag(byte input, byte flag, int condition) => SetFlag(input, flag, condition != 0);
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public static byte SetFlag(byte input, byte flag, bool condition) => condition ? SetFlag(input, flag) : ClearFlag(input, flag);
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public static byte ClearFlag(byte input, byte flag) => (byte)(input & (byte)~flag);
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public static byte ClearFlag(byte input, byte flag, int condition) => ClearFlag(input, flag, condition != 0);
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public static byte ClearFlag(byte input, byte flag, bool condition) => SetFlag(input, flag, !condition);
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public static byte HighByte(int value) => (byte)(value >> 8);
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public static byte HighByte(ushort value) => HighByte((int)value);
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public static byte LowByte(int value) => (byte)(value & (int)Mask.Mask8);
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public static byte LowByte(ushort value) => LowByte((int)value);
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public static ushort PromoteByte(byte value) => (ushort)(value << 8);
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public static byte DemoteByte(ushort value) => HighByte(value);
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public static ushort HigherPart(ushort value) => (ushort)(value & 0xff00);
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public static byte LowerPart(ushort value) => LowByte(value);
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public static ushort MakeWord(byte low, byte high) => (ushort)(PromoteByte(high) | low);
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public static int HighNibble(byte value) => value >> 4;
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public static int LowNibble(byte value) => value & 0xf;
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public static int HigherNibble(byte value) => value & 0xf0;
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public static int LowerNibble(byte value) => LowNibble(value);
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public static int PromoteNibble(byte value) => LowByte(value << 4);
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public static int DemoteNibble(byte value) => HighNibble(value);
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}
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}
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