82 lines
2.2 KiB
Rust
82 lines
2.2 KiB
Rust
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use std::ops::SubAssign;
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use std::sync::atomic::{AtomicU16, Ordering};
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use std::sync::{Arc, Mutex, RwLock};
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use std::thread::{JoinHandle, sleep};
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use std::time::Duration;
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use crate::device::timer::Timer;
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pub struct Device {
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pub registers: RegisterFile,
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pub memory: Box<[u8; Self::DEVICE_MEMORY_SIZE]>,
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pub timer: Timer,
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pub stack: Vec<u16>
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}
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impl Device {
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pub const DEVICE_MEMORY_SIZE: usize = 2 << 12;
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pub fn new(timer: Timer) -> Device {
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let memory = vec![0u8; Self::DEVICE_MEMORY_SIZE].into_boxed_slice().try_into().unwrap();
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log::trace!("Successfully initiated device memory");
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Device {
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registers: RegisterFile::new(),
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memory,
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stack:Vec::with_capacity(16),
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timer,
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}
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}
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}
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impl Device{
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const DEFAULT_FONT:[u8;5*16] = [
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0xF0, 0x90, 0x90, 0x90, 0xF0, // 0
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0x20, 0x60, 0x20, 0x20, 0x70, // 1
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0xF0, 0x10, 0xF0, 0x80, 0xF0, // 2
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0xF0, 0x10, 0xF0, 0x10, 0xF0, // 3
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0x90, 0x90, 0xF0, 0x10, 0x10, // 4
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0xF0, 0x80, 0xF0, 0x10, 0xF0, // 5
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0xF0, 0x80, 0xF0, 0x90, 0xF0, // 6
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0xF0, 0x10, 0x20, 0x40, 0x40, // 7
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0xF0, 0x90, 0xF0, 0x90, 0xF0, // 8
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0xF0, 0x90, 0xF0, 0x10, 0xF0, // 9
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0xF0, 0x90, 0xF0, 0x90, 0x90, // A
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0xE0, 0x90, 0xE0, 0x90, 0xE0, // B
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0xF0, 0x80, 0x80, 0x80, 0xF0, // C
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0xE0, 0x90, 0x90, 0x90, 0xE0, // D
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0xF0, 0x80, 0xF0, 0x80, 0xF0, // E
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0xF0, 0x80, 0xF0, 0x80, 0x80 // F
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];
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const FONT_DEFAULT_MEM_LOCATION_START:usize = 0x50;
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const FONT_DEFAULT_MEM_LOCATION_END:usize = 0x9F;
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pub fn cycle(&mut self){
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}
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pub fn set_default_font(&mut self){
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self.memory[Self::FONT_DEFAULT_MEM_LOCATION_START..=Self::FONT_DEFAULT_MEM_LOCATION_END].copy_from_slice(&Self::DEFAULT_FONT);
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}
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}
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impl Drop for Device{
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fn drop(&mut self) {
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self.timer.send_stop_signal()
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}
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}
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pub struct RegisterFile {
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pub v: [u8; 0x10],
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// program counter - only u12 technically.
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pub pc: u16,
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/// stack pointer
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pub i: u16,
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}
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impl RegisterFile {
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pub fn new() -> RegisterFile {
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RegisterFile {
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v: [0; 0x10],
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pc: 0x200,
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i: 0,
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}
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}
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}
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