feat: interpreter (not all instructions)
This commit is contained in:
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e565a98e6d
commit
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GPG key ID:
2B593F087240EE99
2 changed files with 439 additions and 69 deletions
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@ -6,5 +6,5 @@ edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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rand = "0.8.4"
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sdl2 = "0.35.1"
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506
src/main.rs
506
src/main.rs
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@ -1,16 +1,23 @@
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extern crate sdl2;
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extern crate rand;
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use sdl2::pixels::Color;
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#[allow(unused_imports)]
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use sdl2::event::Event;
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use sdl2::EventPump;
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#[allow(unused_imports)]
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use sdl2::keyboard::Keycode;
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use sdl2::video::Window;
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use sdl2::rect::Point;
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use sdl2::render::Canvas;
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use std::fs::File;
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use std::path::Path;
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use std::io;
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use std::io::Read;
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const font: [u8; 80] = [
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const FONT: [u8; 80] = [
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0xF0, 0x90, 0x90, 0x90, 0xF0,
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0x20, 0x60, 0x20, 0x20, 0x70,
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0xF0, 0x10, 0xF0, 0x80, 0xF0,
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@ -29,40 +36,40 @@ const font: [u8; 80] = [
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0xF0, 0x80, 0xF0, 0x80, 0x80
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];
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const HEIGHT: usize = 32;
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const WIDTH: usize = 64;
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#[allow(dead_code)]
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struct Machine {
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memory: [u8; 4096],
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key_inputs: [i32; 16],
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display_buffer: [[i32; 64]; 32],
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gpio: [i8; 16],
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index: i16,
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opcode: u16,
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display_buffer: [[i32; WIDTH]; HEIGHT],
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gpio: [u8; 16],
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index: u16,
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//opcode: u16,
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pc: usize,
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stack: Vec<i32>
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}
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fn decodeOp(op1: u8, op2: u8) -> u16 {
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let ret: u16 = u16::from(op1) << 2;
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ret + u16::from(op2) >> 2
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stack: Vec<u16>
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}
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#[allow(non_snake_case, unused_variables)]
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impl Machine {
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/// Initialise une machine en mettant tout à 0 (RAM, PC...)
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pub fn new() -> Self {
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Machine {
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Self {
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memory: [0; 4096],
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key_inputs: [0; 16],
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display_buffer: [[0; 64]; 32],
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display_buffer: [[0; WIDTH]; HEIGHT],
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gpio: [0; 16],
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index: 0,
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opcode: 0,
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//opcode: 0,
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pc: 0,
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stack: Vec::new(),
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}
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}
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pub fn init(&mut self) {
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for i in 0..font.len() {
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self.memory[i] = font[i];
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for i in 0..FONT.len() {
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self.memory[i] = FONT[i];
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}
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self.pc = 0x200;
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@ -81,93 +88,340 @@ impl Machine {
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Ok(())
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}
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pub fn cycle(&mut self, screen: &mut sdl2::render::Canvas<Window>) {
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self.opcode = ((self.memory[self.pc] as u16) << 8)
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pub fn cycle(&mut self, screen: &mut Canvas<Window>, events: &mut EventPump) {
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let opcode = ((self.memory[self.pc] as u16) << 8)
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+ (self.memory[self.pc + 1] as u16);
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self.pc += 2;
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//let o = self.opcode & 0xf000;
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let vx: usize = ((opcode & 0x0f00) >> 8) as usize;
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let vy: usize = ((opcode & 0x00f0) >> 4) as usize;
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let k: u8 = (opcode & 0x00ff) as u8;
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match (self.opcode & 0xf000) >> 12 {
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0 => match self.opcode {
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0x00E0 => screen.clear(),
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0x00EE => println!("RET"),
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self.pc += 2;
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match (opcode & 0xf000) >> 12 {
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0 => match opcode {
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0x00E0 => {
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self.display_buffer = [[0; 64]; 32];
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screen.set_draw_color(Color::RGB(0, 0, 0));
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screen.clear();
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screen.present();
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},
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0x00EE => self.pc = self.stack.pop().unwrap() as usize,
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_ => println!("SYS"),
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}
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1 => println!("JP"),
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2 => println!("CALL"),
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3 => println!("SE"),
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4 => println!("SNE"),
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5 => println!("SE 5"),
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6 => println!("LD"),
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7 => println!("ADD"),
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1 => self.pc = (opcode & 0x0fff) as usize,
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2 => {
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self.stack.push(self.pc as u16);
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self.pc = (opcode & 0x0fff) as usize
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},
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3 => if self.gpio[vx] == k as u8 {
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self.pc += 2;
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},
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4 => if self.gpio[vx] != k as u8 {
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self.pc += 2;
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},
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5 => if self.gpio[vx] == self.gpio[vy] {
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self.pc += 2;
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}
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6 => self.gpio[vx] = k,
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7 => self.gpio[vx] = self.gpio[vx].saturating_add(k),
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8 => {
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let x = (self.opcode & 0x0f00) >> 8;
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let y = (self.opcode & 0x00f0) >> 4;
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match self.opcode & 0x000f {
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0 => println!("LD 8"),
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1 => println!("OR"),
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2 => println!("AND"),
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3 => println!("XOR"),
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4 => println!("ADD"),
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5 => println!("SUB"),
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6 => println!("SHR"),
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7 => println!("SUBN"),
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0xE => println!("SHL"),
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//let x = (opcode & 0x0f00) >> 8;
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//let y = (opcode & 0x00f0) >> 4;
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match opcode & 0x000f {
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0 => self.gpio[vx] = self.gpio[vy],
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1 => self.gpio[vx] |= self.gpio[vy],
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2 => self.gpio[vx] &= self.gpio[vy],
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3 => self.gpio[vx] ^= self.gpio[vy],
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4 => {
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self.gpio[vx] = self.gpio[vx].saturating_add(self.gpio[vy]);
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let (_, overflow) = self.gpio[vx].overflowing_add(self.gpio[vy]);
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if overflow {
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self.gpio[0xf] = 1;
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}
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},
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5 => {
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if self.gpio[vx] > self.gpio[vy] {
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self.gpio[0xf] = 1;
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} else {
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self.gpio[0xf] = 0;
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}
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self.gpio[vx] -= self.gpio[vy];
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},
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6 => {
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if self.gpio[vx].trailing_ones() > 0 {
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self.gpio[0xf] = 1;
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} else {
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self.gpio[0xf] = 0;
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}
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self.gpio[vx] >>= 1;
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},
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7 => {
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if self.gpio[vx] < self.gpio[vy] {
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self.gpio[0xf] = 1;
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} else {
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self.gpio[0xf] = 0;
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}
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self.gpio[vx] = self.gpio[vy] - self.gpio[vx];
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},
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0xE => {
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if self.gpio[vx].leading_ones() > 0 {
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self.gpio[0xf] = 1;
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} else {
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self.gpio[0xf] = 0;
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}
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self.gpio[vx] <<= 1;
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},
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_ => println!("error 8")
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}
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}
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9 => println!("SNE 9"),
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0xA => println!("LD A"),
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0xB => println!("JP B"),
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0xC => println!("RND "),
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0xD => println!("DRW"),
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9 => if self.gpio[vx] != self.gpio[vy] {
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self.pc += 2;
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},
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0xA => self.index = opcode & 0x0fff,
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0xB => self.pc = ((self.gpio[0]) as u16 + (opcode & 0x0fff)) as usize,
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0xC => self.gpio[vx] = rand::random::<u8>() & k,
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0xD => {
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let x = self.gpio[vx] as u16;
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let y = self.gpio[vy] as u16;
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for i in 0..(opcode & 0x000f) {
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//println!("{:?}", self.memory);
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let mut sprite = self.memory[(self.index + i as u16) as usize];
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for j in 0..8 {
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let mut case = 0;
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if sprite.leading_ones() > 0 { case = 1; }
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//println!("I :: {}", self.index + i);
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//println!("D :: {} - {}", sprite, case);
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sprite = sprite << 1;
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let ty: usize = (i + y) as usize % HEIGHT;
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let tx: usize = (j + x) as usize % WIDTH;
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let tmp = self.display_buffer[ty][tx];
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self.display_buffer[ty][tx] ^= case;
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if self.display_buffer[ty][tx] == 0 && tmp == 1 {
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self.gpio[0xf] = 1;
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}
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}
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}
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},
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0xE => {
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let x = (self.opcode & 0x0f00) >> 8;
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match self.opcode & 0x00ff {
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0x9E => println!("SKP"),
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0xA1 => println!("SKNP"),
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let x = (opcode & 0x0f00) >> 8;
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match opcode & 0x00ff {
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0x9E => {
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if self.key_inputs[self.gpio[vx] as usize] == 1 {
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self.pc += 2;
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}
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},
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0xA1 => {
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if self.key_inputs[self.gpio[vx] as usize] == 0 {
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self.pc += 2;
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}
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},
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_ => println!("error E")
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}
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}
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0xF => {
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let x = (self.opcode & 0x0f00) >> 8;
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match self.opcode & 0x00ff {
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let x = (opcode & 0x0f00) >> 8;
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match opcode & 0x00ff {
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0x07 => println!("LD F 7"),
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0x0A => println!("LD F A"),
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0x0A => self.check_touch(vx, events),
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0x15 => println!("LD F 15"),
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0x18 => println!("LD F 18"),
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0x1E => println!("ADD F 1E"),
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0x29 => println!("LD F 2"), // self.index = self.gpio[x] * 5) & 0x0fff
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0x1E => self.index += self.gpio[vx] as u16,
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0x29 => self.index = (self.gpio[vx] as u16) * 5, // self.index = self.gpio[x] * 5) & 0x0fff
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0x33 => println!("LD F 3"),
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0x55 => println!("LD F 5"),
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0x65 => println!("LD F 6"),
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0x55 =>
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{
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//let mut j: usize = self.index as usize;
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for i in 0..(vx + 1) {
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self.memory[(self.index as usize) + i] = self.gpio[i];
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//j += 1;
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}
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},
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0x65 => {
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//let mut j: usize = self.index as usize;
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for i in 0..(vx+1) {
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self.gpio[i] = self.memory[(self.index as usize) + i];
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//j += 1;
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}
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},
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_ => println!("error F")
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}
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}
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_ => println!("error")
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}
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}
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fn check_touch(&mut self, vx: usize, events: &mut EventPump) {
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let touch = events.wait_event();
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match touch {
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Event::KeyDown { keycode: Some(Keycode::Num0), .. } => {
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self.gpio[vx] = 0;
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},
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Event::KeyDown { keycode: Some(Keycode::Num1), .. } => {
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self.gpio[vx] = 1;
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},
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Event::KeyDown { keycode: Some(Keycode::Num2), .. } => {
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self.gpio[vx] = 2;
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},
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Event::KeyDown { keycode: Some(Keycode::Num3), .. } => {
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self.gpio[vx] = 3;
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},
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Event::KeyDown { keycode: Some(Keycode::Num4), .. } => {
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self.gpio[vx] = 4;
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},
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Event::KeyDown { keycode: Some(Keycode::Num5), .. } => {
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self.gpio[vx] = 5;
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},
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Event::KeyDown { keycode: Some(Keycode::Num6), .. } => {
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self.gpio[vx] = 6;
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},
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Event::KeyDown { keycode: Some(Keycode::Num7), .. } => {
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self.gpio[vx] = 7;
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},
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Event::KeyDown { keycode: Some(Keycode::Num8), .. } => {
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self.gpio[vx] = 8;
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},
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Event::KeyDown { keycode: Some(Keycode::Num9), .. } => {
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self.gpio[vx] = 9;
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},
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Event::KeyDown { keycode: Some(Keycode::A), .. } => {
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self.gpio[vx] = 0xa;
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},
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Event::KeyDown { keycode: Some(Keycode::B), .. } => {
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self.gpio[vx] = 0xb;
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},
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Event::KeyDown { keycode: Some(Keycode::C), .. } => {
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self.gpio[vx] = 0xc;
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},
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Event::KeyDown { keycode: Some(Keycode::D), .. } => {
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self.gpio[vx] = 0xd;
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},
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Event::KeyDown { keycode: Some(Keycode::E), .. } => {
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self.gpio[vx] = 0xe;
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},
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Event::KeyDown { keycode: Some(Keycode::F), .. } => {
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self.gpio[vx] = 0xf;
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},
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_ => self.check_touch(vx, events),
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}
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}
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}
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fn read_file(p: &Path) -> io::Result<()> {
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let mut buffer = Vec::new();
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let mut f = File::open(p)?;
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let mut mem = [0; 4096];
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f.read_to_end(&mut buffer)?;
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for i in 0..buffer.len() {
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mem[i] = buffer[i];
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}
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println!("{:?}", mem);
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let mut i = 0;
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while i < mem.len() {
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let opcode = ((mem[i] as u16) << 8)
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+ (mem[i + 1] as u16);
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let vx: usize = ((opcode & 0x0f00) >> 8) as usize;
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let vy: usize = ((opcode & 0x00f0) >> 4) as usize;
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let k: u8 = (opcode & 0x00ff) as u8;
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i += 2;
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match (opcode & 0xf000) >> 12 {
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0 => match opcode {
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0x00E0 => println!("CLS"),
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0x00EE => println!("RET"),
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_ => println!("SYS"),
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}
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1 => println!("JP {}", opcode & 0x0fff),
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2 => println!("CALL {}", opcode & 0x0fff),
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3 => println!("3SE {} {}", vx, k),
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4 => println!("4SNE {} {}", vx, k),
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5 => println!("5SE {} {}", vx, vy),
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6 => println!("6LD {} {}", vx, k),
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7 => println!("7ADD {} {}", vx, k),
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8 => {
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//let x = (opcode & 0x0f00) >> 8;
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//let y = (opcode & 0x00f0) >> 4;
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match opcode & 0x000f {
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0 => println!("8LD {} {}", vx, vy),
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1 => println!("8OR {} {}", vx, vy),
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2 => println!("8AND {} {}", vx, vy),
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3 => println!("8XOR {} {}", vx, vy),
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4 => println!("8ADD {} {}", vx, vy),
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5 => println!("8SUB {} {}", vx, vy),
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6 => println!("8SHR {} {}", vx, vy),
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7 => println!("8SUBN {} {}", vx, vy),
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0xE => println!("8SHL {} {}", vx, vy),
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_ => println!("error 8")
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}
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}
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9 => println!("9SNE {} {}", vx, vy),
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0xA => println!("AADD I {}", opcode & 0x0fff),
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0xB => println!("BJP 0 {}", opcode & 0x0fff),
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0xC => println!("RND {} {}", vx, k),
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0xD => println!("DRW {} {} {}", vx, vy, opcode & 0x000f),
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0xE => {
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let x = (opcode & 0x0f00) >> 8;
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match opcode & 0x00ff {
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0x9E => println!("SKP {}", vx),
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0xA1 => println!("SKNP {}", vx),
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_ => println!("error E")
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}
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}
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0xF => {
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let x = (opcode & 0x0f00) >> 8;
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match opcode & 0x00ff {
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0x07 => println!("FLD {} DT", vx),
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0x0A => println!("FLD {} K", vx),
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0x15 => println!("FLD DT {}", vx),
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0x18 => println!("FLD ST {}", vx),
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0x1E => println!("FADD I {}", vx),
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0x29 => println!("FLD F {}", vx),
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0x33 => println!("FLD B {}", vx),
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0x55 => println!("FLD [I] {}", vx),
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0x65 => println!("FLD {} [I]", vx),
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_ => println!("error F")
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||||
}
|
||||
}
|
||||
_ => println!("error")
|
||||
}
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[allow(unused_mut, unused_must_use, unused_labels, unused_variables)]
|
||||
fn main() {
|
||||
//read_file(Path::new("15PUZZLE"));
|
||||
//return;
|
||||
let mut t : Machine = Machine::new();
|
||||
println!("{:?}", t.memory);
|
||||
//println!("{:?}", t.memory);
|
||||
t.init();
|
||||
t.loadRom(Path::new("15PUZZLE"));
|
||||
println!("\n\n{:?}", t.memory);
|
||||
//t.cycle();
|
||||
//t.loadRom(Path::new("15PUZZLE"));
|
||||
t.loadRom(Path::new("BLITZ"));
|
||||
|
||||
//println!("\n\n{:?}", t.memory);
|
||||
|
||||
let sdl_context = sdl2::init().unwrap();
|
||||
let video_subsystem = sdl_context.video().unwrap();
|
||||
let window = video_subsystem.window("Chip8 Emulator", 900, 700)
|
||||
let window = video_subsystem.window("Chip8 Emulator", WIDTH as u32, HEIGHT as u32)
|
||||
.position_centered()
|
||||
.build()
|
||||
.unwrap();
|
||||
|
||||
let mut canvas = window.into_canvas().build().unwrap();
|
||||
canvas.set_draw_color(Color::RGB(0, 255, 255));
|
||||
canvas.set_draw_color(Color::RGB(0, 0, 0));
|
||||
canvas.clear();
|
||||
canvas.present();
|
||||
|
||||
|
|
@ -180,18 +434,134 @@ fn main() {
|
|||
canvas.set_draw_color(Color::RGB(i, 64, 255 - i));
|
||||
canvas.clear();
|
||||
*/
|
||||
t.cycle(&mut canvas);
|
||||
|
||||
/*
|
||||
t.cycle(&mut canvas, &mut event_pump);
|
||||
|
||||
//canvas.set_draw_color(Color::RGB(0, 0, 0));
|
||||
//canvas.clear();
|
||||
//println!("{:?}", t.memory);
|
||||
|
||||
canvas.set_draw_color(Color::RGB(255, 255, 255));
|
||||
|
||||
//println!("{:?}", t.display_buffer);
|
||||
//println!("\n===\n");
|
||||
|
||||
for i in 0..t.display_buffer.len() {
|
||||
for j in 0..t.display_buffer[i].len() {
|
||||
if t.display_buffer[i][j] == 1 {
|
||||
canvas.draw_point(Point::new(j as i32, i as i32));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//canvas.draw_line(Point::new(10, 10), Point::new(20,20));
|
||||
//canvas.draw_point(Point::new(10, 10));
|
||||
|
||||
for event in event_pump.poll_iter() {
|
||||
match event {
|
||||
Event::KeyDown { keycode: Some(Keycode::Escape), ..} => {
|
||||
break 'running
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::Num0), .. } => {
|
||||
t.key_inputs[0] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::Num1), .. } => {
|
||||
t.key_inputs[1] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::Num2), .. } => {
|
||||
t.key_inputs[2] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::Num3), .. } => {
|
||||
t.key_inputs[3] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::Num4), .. } => {
|
||||
t.key_inputs[4] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::Num5), .. } => {
|
||||
t.key_inputs[5] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::Num6), .. } => {
|
||||
t.key_inputs[6] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::Num7), .. } => {
|
||||
t.key_inputs[7] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::Num8), .. } => {
|
||||
t.key_inputs[8] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::Num9), .. } => {
|
||||
t.key_inputs[9] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::A), .. } => {
|
||||
t.key_inputs[0xa] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::B), .. } => {
|
||||
t.key_inputs[0xb] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::C), .. } => {
|
||||
t.key_inputs[0xc] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::D), .. } => {
|
||||
t.key_inputs[0xd] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::E), .. } => {
|
||||
t.key_inputs[0xe] = 1;
|
||||
},
|
||||
Event::KeyDown { keycode: Some(Keycode::F), .. } => {
|
||||
t.key_inputs[0xf] = 1;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::Num0), .. } => {
|
||||
t.key_inputs[0] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::Num1), .. } => {
|
||||
t.key_inputs[1] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::Num2), .. } => {
|
||||
t.key_inputs[2] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::Num3), .. } => {
|
||||
t.key_inputs[3] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::Num4), .. } => {
|
||||
t.key_inputs[4] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::Num5), .. } => {
|
||||
t.key_inputs[5] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::Num6), .. } => {
|
||||
t.key_inputs[6] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::Num7), .. } => {
|
||||
t.key_inputs[7] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::Num8), .. } => {
|
||||
t.key_inputs[8] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::Num9), .. } => {
|
||||
t.key_inputs[9] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::A), .. } => {
|
||||
t.key_inputs[0xa] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::B), .. } => {
|
||||
t.key_inputs[0xb] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::C), .. } => {
|
||||
t.key_inputs[0xc] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::D), .. } => {
|
||||
t.key_inputs[0xd] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::E), .. } => {
|
||||
t.key_inputs[0xe] = 0;
|
||||
},
|
||||
Event::KeyUp { keycode: Some(Keycode::F), .. } => {
|
||||
t.key_inputs[0xf] = 0;
|
||||
},
|
||||
|
||||
_ => {}
|
||||
}
|
||||
}
|
||||
*/
|
||||
|
||||
canvas.present();
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue