feat: initial rom implementation

src/cpu.rs

@@ -112,7 +112,9 @@ impl Cpu {
         // @todo this is so bad, need to improve this by an order
         // of magnitude
         if self.halted {
-            if ((self.mmu.ie & 0x01 == 0x01) && self.mmu.ppu().int_vblank()) || ((self.mmu.ie & 0x04 == 0x04) && self.mmu.timer().int_tima()) {
+            if ((self.mmu.ie & 0x01 == 0x01) && self.mmu.ppu().int_vblank())
+                || ((self.mmu.ie & 0x04 == 0x04) && self.mmu.timer().int_tima())
+            {
                 self.halted = false;
             }
         }

src/lib.rs

@@ -5,5 +5,6 @@ pub mod inst;
 pub mod mmu;
 pub mod pad;
 pub mod ppu;
+pub mod rom;
 pub mod timer;
 pub mod util;

src/rom.rs

+pub struct Rom {
+    data: Vec<u8>,
+}
+
+pub enum RomType {
+    RomOnly = 0x00,
+    Mbc1 = 0x01,
+    Mbc1Ram = 0x02,
+    Mbc1RamBattery = 0x03,
+    Mbc2 = 0x05,
+    Mbc2Battery = 0x06,
+    Unknown = 0xff,
+}
+
+impl Rom {
+    pub fn title() -> &'static str {
+        "asdas"
+    }
+
+    pub fn rom_type() -> RomType {
+        RomType::RomOnly
+    }
+}