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Convert LINC manual charset octets to Speccy CH8 file
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| using System.Collections.Generic; | |
| using var outFile = File.OpenWrite("linc.ch8"); | |
| for (var x = 32; x < 128; x++) | |
| { | |
| byte[] c = [0, 0, 0, 0, 0, 0, 0, 0]; | |
| if (CharacterPatterns.Patterns.TryGetValue(Convert.ToChar(x), out var pattern)) | |
| { | |
| c = CharacterPatterns.MapPatternToRaw(pattern); | |
| } | |
| for (var y = 0; y < 8; y++) | |
| outFile.WriteByte(c[y]); | |
| } | |
| static class CharacterPatterns | |
| { | |
| public static byte[] MapPatternToRaw(string[] octets) | |
| { | |
| var bitstream = OctalToBitstream(octets); | |
| var pixels = BitstreamToGlyph(bitstream); | |
| //Dump8x8Glyph(pixels); | |
| return GlyphToCh8(pixels); | |
| } | |
| private static byte[] GlyphToCh8(bool[,] pixels) | |
| { | |
| var font = new byte[8]; | |
| for (var row = 0; row < 8; row++) | |
| { | |
| byte byteVal = 0; | |
| for (var col = 0; col < 8; col++) | |
| { | |
| if (pixels[col, row]) | |
| { | |
| byteVal |= (byte)(1 << (7 - col)); | |
| } | |
| } | |
| font[row] = byteVal; | |
| } | |
| return font; | |
| } | |
| private static void Dump8x8Glyph(bool[,] pixels) | |
| { | |
| for (int y = 0; y < 8; y++) | |
| { | |
| for (int x = 0; x < 8; x++) | |
| { | |
| Console.Write(pixels[x, y] ? "#" : "_"); | |
| } | |
| Console.WriteLine(); | |
| } | |
| Console.WriteLine(); | |
| } | |
| private static bool[,] BitstreamToGlyph(List<bool> bits) | |
| { | |
| var pixels = new bool[8, 8]; | |
| { | |
| var x = 2; | |
| var y = 6; | |
| foreach (var t in bits) | |
| { | |
| pixels[x, y--] = t; | |
| if (y == 0) | |
| { | |
| y = 6; | |
| x++; | |
| } | |
| } | |
| } | |
| return pixels; | |
| } | |
| private static List<bool> OctalToBitstream(string[] octets) | |
| { | |
| // Convert octal strings to bits | |
| var bits = new List<bool>(); | |
| foreach (var octal in octets.Reverse()) | |
| { | |
| foreach (var digitChar in octal) | |
| { | |
| // Extract 3 bits from each octal digit (MSB first) | |
| var digit = digitChar - '0'; | |
| bits.Add((digit & 4) == 4); | |
| bits.Add((digit & 2) == 2); | |
| bits.Add((digit & 1) == 1); | |
| } | |
| } | |
| bits.Reverse(); | |
| return bits; | |
| } | |
| public static readonly Dictionary<char, string[]> Patterns = new() | |
| { | |
| { '0', ["4136", "3641"] }, | |
| { '1', ["2101", "0177"] }, | |
| { '2', ["4523", "2151"] }, | |
| { '3', ["4122", "2651"] }, | |
| { '4', ["2414", "0477"] }, | |
| { '5', ["5172", "0651"] }, | |
| { '6', ["1506", "4225"] }, | |
| { '7', ["4443", "6050"] }, | |
| { '8', ["5126", "2651"] }, | |
| { '9', ["5120", "3651"] }, | |
| { 'A', ["4477", "7744"] }, | |
| { 'B', ["5177", "2651"] }, | |
| { 'C', ["4136", "2241"] }, | |
| { 'D', ["4177", "3641"] }, | |
| { 'E', ["4577", "4145"] }, | |
| { 'F', ["4477", "4044"] }, | |
| { 'G', ["4136", "2645"] }, | |
| { 'H', ["1077", "7710"] }, | |
| { 'I', ["7741", "0041"] }, | |
| { 'J', ["4142", "4076"] }, | |
| { 'K', ["1077", "4324"] }, | |
| { 'L', ["0177", "0301"] }, | |
| { 'M', ["3077", "7730"] }, | |
| { 'N', ["3077", "7706"] }, | |
| { 'O', ["4177", "7741"] }, | |
| { 'P', ["4477", "3044"] }, | |
| { 'Q', ["4276", "0376"] }, | |
| { 'R', ["4477", "3146"] }, | |
| { 'S', ["5121", "4651"] }, | |
| { 'T', ["4040", "4077"] }, | |
| { 'U', ["0177", "7701"] }, | |
| { 'V', ["0176", "7402"] }, | |
| { 'W', ["0677", "7701"] }, | |
| { 'X', ["1463", "6314"] }, | |
| { 'Y', ["0770", "7007"] }, | |
| { 'Z', ["4543", "6151"] }, | |
| { '=', ["1212", "1212"] }, | |
| { 'u', ["0107", "0107"] }, | |
| { ',', ["0500", "0006"] }, | |
| { '.', ["0001", "0000"] }, | |
| { '\u25a1', ["4577", "7745"] }, // Box character | |
| { '[', ["4177", "0000"] }, | |
| { 'i', ["0101", "0126"] }, | |
| { 'p', ["3700", "3424"] }, | |
| { '-', ["0404", "0404"] }, | |
| { '+', ["0404", "0437"] }, | |
| { '|', ["0000", "0077"] }, | |
| { '#', ["3614", "1436"] }, | |
| { ' ', ["0000", "0000"] }, // SPACE | |
| { '\0', ["0000", "0000"] } // NULL/EOL/del/CASE | |
| }; | |
| } |
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