Struct chip8_vm::vm::Vm

pub struct Vm { /* fields omitted */ }

Virtual machine

The virtual machine manages state like its registers, the RAM, stack, screen pixels, pressed keys as well as timers and some internal state.

Methods

impl Vm

fn new() -> Vm

Creates a new Vm instance with default state

fn load_rom(&mut self, reader: &mut Read) -> Result<usize, Chip8Error>

Loads the ROM contents from reader into RAM at the program start address

fn dump_ram(&self, writer: &mut Write)

fn beeping(&self) -> bool

Returns True if the sound timer is active

fn set_key(&mut self, idx: u8)

Marks the key with index idx as being set

fn unset_key(&mut self, idx: u8)

Marks they key with index idx as being unset

fn step(&mut self, dt: f32)

Executes remaining instructions since the last step

fn screen_rows<'a>(&'a self) -> Chunks<'a, u8>

Returns the pixel rows of the screen

fn print_screen(&self)

Prints the current screen pixels to stdout