diff options
Diffstat (limited to 'src/bin.rs')
| -rw-r--r-- | src/bin.rs | 168 |
1 files changed, 125 insertions, 43 deletions
@@ -66,6 +66,22 @@ impl SimpleCart { mirror_type: MirrorType) -> Self { SimpleCart{chr_rom, prg_rom, sram, mirror_type} } + + fn load_vec(vec: &mut Vec<u8>, reader: &mut utils::Read) -> bool { + let len = vec.len(); + match reader.read(vec) { + Some(x) => x == len, + None => false + } + } + + fn save_vec(vec: &Vec<u8>, writer: &mut utils::Write) -> bool { + let len = vec.len(); + match writer.write(vec) { + Some(x) => x == len, + None => false + } + } } impl Cartridge for SimpleCart { @@ -100,22 +116,24 @@ impl Cartridge for SimpleCart { fn set_mirror_type(&mut self, mt: MirrorType) {self.mirror_type = mt} fn load(&mut self, reader: &mut utils::Read) -> bool { - let len = self.sram.len(); - (match reader.read(&mut self.sram) { - Some(x) => x == len, - None => false - }) && + self.load_sram(reader) && + SimpleCart::load_vec(&mut self.chr_rom, reader) && utils::load_prefix(&mut self.mirror_type, 0, reader) } fn save(&self, writer: &mut utils::Write) -> bool { - let len = self.sram.len(); - (match writer.write(&self.sram) { - Some(x) => x == len, - None => false - }) && + self.save_sram(writer) && + SimpleCart::save_vec(&self.chr_rom, writer) && utils::save_prefix(&self.mirror_type, 0, writer) } + + fn load_sram(&mut self, reader: &mut utils::Read) -> bool { + SimpleCart::load_vec(&mut self.sram, reader) + } + + fn save_sram(&self, writer: &mut utils::Write) -> bool { + SimpleCart::save_vec(&self.sram, writer) + } } struct FileIO(File); @@ -387,39 +405,74 @@ fn print_cpu_trace(cpu: &CPU) { } fn main() { - let matches = App::new("RuNES") - .version("0.1.5") - .author("Ted Yin <tederminant@gmail.com>") - .about("A Rust NES emulator") - .arg(Arg::with_name("scale") - .short("x") - .long("scale") - .required(false) - .takes_value(true)) - .arg(Arg::with_name("full") - .short("f") - .long("full") - .required(false) - .takes_value(false)) - .arg(Arg::with_name("INPUT") - .help("the iNES ROM file") - .required(true) - .index(1)) - .arg(Arg::with_name("load") - .short("l") - .long("load") - .required(false) - .takes_value(true)) - .get_matches(); + let matches = + App::new("RuNES") + .version("0.1") + .author("Ted Yin <tederminant@gmail.com>") + .about("A Rust NES emulator") + .arg(Arg::with_name("scale") + .short("x") + .long("scale") + .help("Set pixel scaling factor (3 by default)") + .required(false) + .takes_value(true)) + .arg(Arg::with_name("full") + .help("Enable the entire PPU rendering area") + .short("f") + .long("full") + .required(false) + .takes_value(false)) + .arg(Arg::with_name("INPUT") + .help("iNES ROM file") + .required(true) + .index(1)) + .arg(Arg::with_name("load") + .help("Load from specified machine state file") + .short("l") + .long("load") + .required(false) + .takes_value(true)) + .arg(Arg::with_name("save") + .help("Save to specified machine state file when exit") + .short("s") + .long("save") + .required(false) + .takes_value(true)) + .arg(Arg::with_name("load-sram") + .help("Load from specified sram file") + .short("L") + .long("load-sram") + .required(false) + .takes_value(true)) + .arg(Arg::with_name("save-sram") + .help("Save to specified sram file when exit") + .short("S") + .long("save-sram") + .required(false) + .takes_value(true)) + .arg(Arg::with_name("no-state") + .help("Power up the emulator with initial state") + .short("n") + .long("no-state") + .required(false) + .takes_value(false)) + .get_matches(); let scale = std::cmp::min(8, std::cmp::max(1, value_t!(matches, "scale", u32).unwrap_or(3))); let full = matches.is_present("full"); - /* load and parse iNES file */ let fname = matches.value_of("INPUT").unwrap(); - let lname = matches.value_of("load"); + let load_state_name = matches.value_of("load"); + let save_state_name = matches.value_of("save"); + let save_sram_name = matches.value_of("save-sram"); + let load_sram_name = matches.value_of("load-sram"); + let default_state_name = fname.to_string() + ".runes"; + let default_sram_name = fname.to_string() + ".runes_sram"; + let no_state = matches.is_present("no-state"); + + /* load and parse iNES file */ let mut file = File::open(fname).unwrap(); let mut rheader = [0; 16]; file.read(&mut rheader[..]).unwrap(); @@ -493,19 +546,38 @@ fn main() { let mut apu = APU::new(&mut spkr); let cpu_ptr = &mut cpu as *mut CPU; cpu.mem.bus.attach(cpu_ptr, &mut ppu, &mut apu); - match lname { - Some(s) => { - let mut file = FileIO(File::open(s).unwrap()); + let load_state = !no_state && match match load_state_name { + Some(s) => Some(File::open(s).unwrap()), + None => match File::open(&default_state_name) { + Ok(file) => Some(file), + Err(_) => None + } + } { + Some(f) => { + let mut file = FileIO(f); cpu.load(&mut file); ppu.load(&mut file); apu.load(&mut file); mapper.get_mut().load(&mut file); - debug_assert!(cpu.cycle == 0); + true }, - None => { - cpu.powerup() + None => false + }; + + if !load_state { + if let Some(f) = match load_sram_name { + Some(s) => Some(File::open(s).unwrap()), + None => match File::open(&default_sram_name) { + Ok(file) => Some(file), + Err(_) => None + } + } { + let mut file = FileIO(f); + mapper.get_mut().get_cart_mut().load_sram(&mut file); } + cpu.powerup() } + device.resume(); loop { /* consume the leftover cycles from the last instruction */ @@ -514,12 +586,22 @@ fn main() { } if exit_flag.get() { { - let mut file = FileIO(File::create("t.dat").unwrap()); + let mut file = FileIO(File::create(match save_state_name { + Some(s) => s.to_string(), + None => default_state_name + }).unwrap()); cpu.save(&mut file); ppu.save(&mut file); apu.save(&mut file); mapper.save(&mut file); } + { + let mut file = FileIO(File::create(match save_sram_name { + Some(s) => s.to_string(), + None => default_sram_name + }).unwrap()); + mapper.get_cart().save_sram(&mut file); + } exit(0); } //print_cpu_trace(&cpu); |