void FixedUpdate() { const int frameCycles = VIC2.CYCLES_PER_LINE * VIC2.NUM_LINES; // _ram.WriteIO (0xd021, (byte)colour); _processor.Cycles = 0; _audioCycles = 0; for (ushort i = 0; i < VIC2.FIRST_VISIBLE_LINE; ++i) { ExecuteLine(i, false); } _vic2.BeginFrame(); for (ushort i = VIC2.FIRST_VISIBLE_LINE; i < VIC2.FIRST_INVISIBLE_LINE; ++i) { ExecuteLine(i, true); } for (ushort i = VIC2.FIRST_INVISIBLE_LINE; i < VIC2.NUM_LINES; ++i) { ExecuteLine(i, false); } // Render rest of audio until end of frame if (_audioCycles < frameCycles) { _sid.BufferSamples(frameCycles - _audioCycles); _audioCycles = frameCycles; } _textureDirty = true; _ram.Write(0x2000, (byte)(FlashBorder ? 1 : 0)); //Debug.Log(_sid.samples.Count); }
void Run() { _ram = new RAM64K(); _cpu = new MOS6502(_ram); Console.Title = "6502"; Console.BackgroundColor = (ConsoleColor)6; Console.ForegroundColor = (ConsoleColor)14; Console.SetWindowSize(40, 26); Console.SetBufferSize(40, 26); Console.CursorSize = 100; //TestB(); //return; //_ram.Write(0x0000, 0x2F); //_ram.Write(0x0001, 0x37); //_ram.Write(0xD018, 21); using (FileStream file = new FileStream("BASIC.ROM", FileMode.Open, FileAccess.Read)) _ram.Load(file, 0xA000, 8192); using (FileStream file = new FileStream("CHAR.ROM", FileMode.Open, FileAccess.Read)) _ram.Load(file, 0xD000, 4096); using (FileStream file = new FileStream("KERNAL.ROM", FileMode.Open, FileAccess.Read)) _ram.Load(file, 0xE000, 8192); byte[] screenbuffer = new byte[1000]; byte raster = 0; while (true) { _cpu.Process(); //Console.WriteLine(cpu.PC.ToString("X4")); _ram.Write(0xD012, raster); raster++;// if (raster == 312) raster = 0; //Console.Clear(); if (_cpu.Cycles % 10000 == 0) { if (Console.KeyAvailable) { ConsoleKeyInfo key = Console.ReadKey(true); _ram.Write16(0xDC00, (ushort)key.Key); } else { _ram.Write16(0xDC00, 0x0); } //Console.Title = _cpu.PC.ToString("X4"); Console.Title = _ram.Read16(0xDC00).ToString(); // Address where the C64 character screen buffer is located ushort screenAddress = (ushort)(_ram[0x0288] << 8); for (ushort i = 0; i < 1000; i++) { byte data = _ram.Read((ushort)(i + screenAddress)); if (data < 0x20) { data += 0x40; } //data &= 0x7F; // Reverse if (data != screenbuffer[i]) { Console.CursorVisible = false; if ((data & 0x80) != 0) { Console.BackgroundColor = (ConsoleColor)14; Console.ForegroundColor = (ConsoleColor)6; } Console.SetCursorPosition(i % 40, i / 40); Console.Write((char)(data)); if ((data & 0x80) != 0) { Console.BackgroundColor = (ConsoleColor)6; Console.ForegroundColor = (ConsoleColor)14; } } screenbuffer[i] = data; } if (_ram[0x00CC] == 0) // Draw cursor when visible { int x = _ram[0x00CA]; int y = _ram[0x00C9]; if (Console.CursorLeft != x || Console.CursorTop != y) { Console.SetCursorPosition(x, y); } if (!Console.CursorVisible) { Console.CursorVisible = true; } } } //System.Threading.Thread.Sleep(50); /* * cpu.Op(); * Console.WriteLine("test00: " + ram.Read(0x022A).ToString("X2")); * Console.WriteLine("test01: " + ram.Read(0xA9).ToString("X2")); * Console.WriteLine("test02: " + ram.Read(0x71).ToString("X2")); * System.Threading.Thread.Sleep(50); * if (cpu.PC == 0x45C0) * { * * Console.WriteLine("FINAL: " + ram.Read(0x0210).ToString("X2")); * System.Threading.Thread.Sleep(50); * } */ } }