start of Disk

src/simulator/disk.rs

@@ -0,0 +1,52 @@
+use core::panic;
+use std::{fs::{File, self}, io::{BufReader, Read, Seek, SeekFrom, Write}};
+
+pub const SECTORS_PER_TRACK : i32 = 32;
+pub const NUM_TRACKS : i32 = 64;
+pub const NUM_SECTORS : i32 = SECTORS_PER_TRACK * NUM_TRACKS;
+pub const SECTOR_SIZE : i32 = 128;
+
+pub struct Disk {
+    pub file : File,
+    pub last_selector : i32,
+    pub active : bool
+}
+
+impl Disk {
+
+    pub fn init_disk(path : String) -> Disk {
+        Disk {
+            file : fs::File::open(path).unwrap(),
+            last_selector : 0,
+            active : false
+        }
+    }
+
+    pub fn read_request(disk : &mut Disk, sector_number : i32, data : &mut Vec<u8>) {
+        if disk.active {
+            panic!("Only one request at time");
+        }
+
+        if sector_number < 0 || sector_number >= NUM_SECTORS {
+            panic!("sector_number isn't right");
+        }
+
+        disk.file.seek(SeekFrom::Start((sector_number * SECTOR_SIZE) as u64));
+        let mut reader = BufReader::new(&disk.file);
+        reader.read(data);
+        
+    }
+
+    pub fn write_request(disk : &mut Disk, sector_number : i32, data : &mut Vec<u8>) {
+        if disk.active {
+            panic!("Only one request at time");
+        }
+
+        if sector_number < 0 || sector_number >= NUM_SECTORS {
+            panic!("sector_number isn't right");
+        }
+
+        disk.file.seek(SeekFrom::Start((sector_number * SECTOR_SIZE) as u64));
+        disk.file.write(data);
+    }
+}

src/simulator/mod.rs

@@ -6,6 +6,7 @@ pub mod loader;
 pub mod interrupt;
 pub mod translationtable;
 pub mod mmu;
+pub mod disk;
 
 pub mod global {