feat: small tune and added method

src/cpu.rs

@@ -149,7 +149,7 @@ impl Cpu {
 
         let (instruction_fn, instruction_time, instruction_str) = instruction;
 
-        if *instruction_str == "! UNIMP !" {
+        if *instruction_str == "! UNIMP !" || *instruction_str == "HALT" {
             println!(
                 "{}\t(0x{:02x})\t${:04x} {}",
                 instruction_str, opcode, pc, is_prefix
@@ -177,6 +177,11 @@ impl Cpu {
         self.mmu().ppu()
     }
 
+    #[inline(always)]
+    pub fn halted(&self) -> bool {
+        self.halted
+    }
+
     #[inline(always)]
     pub fn ticks(&self) -> u32 {
         self.ticks

src/ppu.rs

@@ -453,6 +453,12 @@ impl Ppu {
         }
     }
 
+    /// Clears the current frame buffer, setting the background color
+    /// for all the pixels in the frame buffer.
+    pub fn clear_frame_buffer(&mut self) {
+        self.fill_frame_buffer([255, 255, 255]);
+    }
+
     /// Prints the tile data information to the stdout, this is
     /// useful for debugging purposes.
     pub fn print_tile_stdout(&self, tile_index: usize) {