Initial commit

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "salt-n-vinegar"
+version = "0.1.0"

Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "salt-n-vinegar"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

README.md

@@ -0,0 +1,3 @@
+# saltnvinegar
+
+A chip8 emulator written in Rust

notes.txt

@@ -0,0 +1,18 @@
+00E0    Clear screen
+00EE    RET
+        Sets the PC to the top of the stack, then subtracts 1 from the stack pointer
+1nnn    JMP, address
+2nnn    CALL address
+        Increments the stack pointer then puts the current PC on the top of the stack, the PC is then set to xxx
+3xkk    SE Vx, byte
+        Skip next instruction if Vx register == kk
+        Increments PC by 2
+4xkk    SNE Vx, byte
+        Skip next instruction if Vx register != kk
+        Increments PC by 2
+5xy0    SE Vx, Vy
+        Skip next instruction if Vx register == Vy register
+        Increments PC by 2
+6xkk    Ld Vx, Vy
+        Skip next instruction if Vx register == Vy register
+        Increments PC by 2

src/main.rs

@@ -0,0 +1,42 @@
+use std::path;
+use std::env;
+use std::fs;
+use std::process::exit;
+
+// Module imports
+mod util;
+
+fn main()
+{
+    // Collect our execution args
+    let args: Vec<String> = env::args().collect();
+    // let mut inject_mode: bool = false;
+    // let mut patch_file_path: &String = &"".to_string();
+
+    // Grab our filepath from our options
+    if &args.len() < &2
+    {
+        // No file given, terminate
+        util::print_help();
+        exit(0);
+    }
+
+    let file_path: &String = &args[1];
+    
+    if path::Path::new(file_path).exists()
+    {
+        println!("File exists, reading '{}'...", file_path);
+        
+        let contents: Result<Vec<u8>, std::io::Error> = fs::read(file_path);
+        
+        if contents.is_ok()
+        {
+            let _bytes: &Vec<u8> = &contents.expect("");
+            // let magic_num: &[u8] = &bytes[0..4];   
+        }
+    } else
+    {
+        println!("[Error] File '{}' does not exist", file_path);
+        exit(-1);
+    }
+}

src/util.rs

@@ -0,0 +1,3 @@
+pub fn print_help() {
+    print!("Usage: saltnvinegar [CHIP8_FILE]\n");
+}