Start on display

Author: commonkestrel

src/emulator.rs

@@ -1,3 +1,5 @@
+mod display;
+
 use std::{
     cmp::Ordering,
     collections::HashMap,

src/emulator/display.rs

@@ -0,0 +1,27 @@
+use std::{cell::UnsafeCell, marker::PhantomData, pin::Pin, sync::atomic::{AtomicU16, AtomicU8, Ordering}};
+
+use async_std::task::JoinHandle;
+
+const FONT: &[u8; 1 << 12] = include_bytes!("../vga-font.rom");
+
+pub struct TextBuffer {
+    data: Pin<Box<[u8; 1 << 12]>>,
+    handle: JoinHandle<()>,
+}
+
+struct BufferPtr(*const [u8; 1 << 12]);
+unsafe impl Send for BufferPtr {}
+
+impl TextBuffer {
+    pub fn spawn() -> TextBuffer {
+        let data = Box::pin([0; 1 << 12]);
+        
+        let handle = async_std::task::spawn(run_handle(BufferPtr(&*data)));
+
+        TextBuffer {data, handle}
+    }
+}
+
+async fn run_handle(buffer: BufferPtr) {
+
+}