chore: remove duplicate code

src/bus.rs

@@ -150,66 +150,11 @@ impl Bus {
     }
 
     pub fn read_word(&self, addr: u16) -> u16 {
-        match addr {
+        (self.read_byte(addr + 1) as u16) << 8 | self.read_byte(addr) as u16
-            0x0000..=0x3FFF => {
-                // 16KB ROM bank 00
-                if addr <= 0x00FF && self.boot.is_some() {
-                    let boot = self.boot.unwrap();
-                    (boot[(addr + 1) as usize] as u16) << 8 | boot[addr as usize] as u16
-                } else {
-                    match &self.cartridge {
-                        Some(cart) => cart.read_word(addr),
-                        None => panic!("Tried to read from a non-existant cartridge"),
-                    }
-                }
-            }
-            0x4000..=0x7FFF => match &self.cartridge {
-                // 16KB ROM Bank 01 -> NN (switchable via MB)
-                Some(cart) => cart.read_word(addr),
-                None => panic!("Tried to read from a non-existant cartridge"),
-            },
-            0x8000..=0x9FFF => {
-                // 8KB Video RAM
-                (self.ppu.vram[((addr + 1) - 0x8000) as usize] as u16) << 8
-                    | self.ppu.vram[(addr - 0x8000) as usize] as u16
-            }
-            0xA000..=0xBFFF => {
-                // 8KB External RAM
-                unimplemented!("Unable to read {:#06X} in Extermal RAM", addr);
-            }
-            0xC000..=0xCFFF => {
-                // 4KB Work RAM Bank 0
-                unimplemented!("Unable to read {:#06X} in Work RAM Bank 0", addr);
-            }
-            0xD000..=0xDFFF => {
-                // 4KB Work RAM Bank 1 -> N
-                unimplemented!("Unable to read {:#06X} in Work RAM Bank N", addr);
-            }
-            0xE000..=0xFDFF => {
-                // Mirror of 0xC000 to 0xDDFF
-                unimplemented!("Unable to read {:#06X} in Restricted Mirror", addr);
-            }
-            0xFE00..=0xFE9F => {
-                // Sprite Attrbute Table
-                unimplemented!("Unable to read {:#06X} in the Sprite Attribute Table", addr);
-            }
-            0xFEA0..=0xFEFF => unimplemented!("{:#06X} is not allowed to be used", addr),
-            0xFF00..=0xFF7F => {
-                // IO Registers
-                unimplemented!("Unable to read {:#06X} in I/O Registers", addr);
-            }
-            0xFF80..=0xFFFE => {
-                // High RAM
-                unimplemented!("Unable to read {:#06X} in High RAM", addr);
-            }
-            0xFFFF => {
-                // Interupts Enable Register
-                unimplemented!("Unable to read IE Register {:#06X} ", addr);
-            }
-        }
     }
 
     pub fn write_word(&mut self, addr: u16, word: u16) {
-        unimplemented!("Can't write {:#06X} to {:#06X}", word, addr)
+        self.write_byte(addr + 1, (word >> 8) as u8);
+        self.write_byte(addr, (word & 0x00FF) as u8);
     }
 }