// 8
public static void Arithmetics(Chip8 chip8)
{
arithmetics[chip8.Opcode & 0x000F](chip8);
}
static void FThree(ushort op, Chip8 emu)
{
emu.memory[emu.indexReg] = (byte)(emu.V[(op & 0x0F00) >> 8] / 100);
emu.memory[emu.indexReg + 1] = (byte)((emu.V[(op & 0x0F00) >> 8] / 10) % 10);
emu.memory[emu.indexReg + 2] = (byte)((emu.V[(op & 0x0F00) >> 8] % 100) % 10);
}
static void NOP(ushort op, Chip8 emu)
{
}
static void FE(ushort op, Chip8 emu)
{
int X = (op & 0x0F00) >> 8;
emu.indexReg += emu.V[X];
}
static void FNine(ushort op, Chip8 emu)
{
int X = (op & 0x0F00) >> 8;
emu.indexReg = (ushort)(emu.V[X] * 5);
}
// 0
public static void Zeros(Chip8 chip8)
{
var kk = Utils.GetKK(chip8.Opcode);
zeros[kk](chip8);
}
public static void Main(string[] args)
{
//Console.WriteLine("Hello World!");
//byte[] loadedCode = File.ReadAllBytes("pong.rom");
byte[] loadedCode = File.ReadAllBytes("INVADERS");
//byte[] loadedCode = File.ReadAllBytes("test_opcode.ch8");
//byte[] loadedCode = File.ReadAllBytes("BC_test.ch8");
chip8 = new Chip8(loadedCode);
RenderWindow app = new RenderWindow(new VideoMode(800, 600), "chip8 emu");
app.Closed += new EventHandler(OnClose);
float TILESIZEX = (float)app.Size.X / 64;
float TILESIZEY = (float)app.Size.Y / 32;
RectangleShape shape = new RectangleShape(new Vector2f(TILESIZEX, TILESIZEY));
app.KeyPressed += OnKeyPressed;
app.KeyReleased += OnKeyReleased;
Font font = new Font("Arial.ttf");
Text text = new Text("", font);
//app.KeyReleased +=
// Start the game loop
//app.SetFramerateLimit(60);
//app.SetVerticalSyncEnabled(true);
while (app.IsOpen)
{
chip8.Execute();
// Process events
app.DispatchEvents();
//if (chip8.displayUpdated)
{
// Clear screen
app.Clear();
for (int y = 0; y < 32; y++)
{
for (int x = 0; x < 64; x++)
{
shape.Position = new Vector2f(x * TILESIZEX, y * TILESIZEY);
if (chip8.display[x, y] == 1)
{
shape.FillColor = Color.Blue;
}
else
{
shape.FillColor = Color.Black;
}
app.Draw(shape);
}
//Console.WriteLine();
}
List <string> lines = chip8.GetCurrentLine();
for (int i = 0; i < lines.Count; i++)
{
text.DisplayedString = lines[i];
text.Position = new Vector2f(0, i * 25);
app.Draw(text);
}
for (int i = 0; i < 16; i++)
{
text.DisplayedString = chip8.inputs[i] ? "1" : "0";
text.Position = new Vector2f((i % 4) * 25 + 200, (i / 4) * 25);
app.Draw(text);
}
app.Display();
chip8.displayUpdated = false;
}
//for (int i = 0; i < 16; i++)
// chip8.inputs[i] = false;
// Draw the sprite
// Draw the string
// Sleep to slow down emulation speed
}
}
//0xB
static void B(ushort op, Chip8 emu)
{
emu.progCounter = (ushort)(emu.V[0] + (op & 0x0FFF));
}
//0xF
static void F(ushort op, Chip8 emu)
{
fOpFunctions[op & 0x000F](op, emu);
}
//0x8
static void Eight(ushort op, Chip8 emu)
{
eightOpFunctions[op & 0x000F](op, emu);
}
//0xA
static void A(ushort op, Chip8 emu)
{
emu.indexReg = (ushort)(op & 0x0FFF);
}
//0x6
/// <summary>
/// 0x6XNN
/// Set V[X]to NN
/// </summary>
/// <param name="op">Op.</param>
/// <param name="emu">Emu.</param>
static void Six(ushort op, Chip8 emu)
{
byte X = (byte)((op & 0x0F00) >> 8);
emu.V[X] = (byte)(op & 0x00FF);
}
/// <summary>
/// 0x2NNN
/// Calls the address at NNN
/// </summary>
/// <param name="op">Op.</param>
/// <param name="emu">Emu.</param>
static void Two(ushort op, Chip8 emu)
{
emu.stack[emu.stackPointer] = emu.progCounter;
++emu.stackPointer;
emu.progCounter = (ushort)(op & 0x0FFF);
}
/// <summary>
/// 0x1NNN
/// Jump to the address at NNN
/// </summary>
/// <param name="op">Op containing address</param>
/// <param name="emu">Emu.</param>
static void One(ushort op, Chip8 emu)
{
emu.progCounter = (ushort)(op & 0x0FFF);
}
// ANNN
public static void Mvi_NNN(Chip8 chip8)
{
var nnn = Utils.GetNNN(chip8.Opcode);
chip8.I = (ushort)nnn;
}
static void FSeven(ushort op, Chip8 emu)
{
int X = (op & 0x0F00) >> 8;
emu.V[X] = emu.delayTimer;
}
// BNNN
public static void Jmi_NNN(Chip8 chip8)
{
var nnn = Utils.GetNNN(chip8.Opcode);
chip8.PC = (ushort)(chip8.V[0] + nnn);
}
static void FEight(ushort op, Chip8 emu)
{
int X = (op & 0x0F00) >> 8;
emu.soundTimer = emu.V[X];
}
// E
public static void Keyboard(Chip8 chip8)
{
var kk = Utils.GetKK(chip8.Opcode);
keys[kk](chip8);
}
public void Setup()
{
emu = new Chip8();
rnd = new Random();
}
