reorganise main

src/main.rs

@@ -100,9 +100,7 @@ impl Memory {
             0x8000..0xA000 => {
                 return self.vram[(address - 0x8000) as usize];
             }
-            0xA000..0xC000 => {
+            0xA000..0xC000 => 0xFF,
-                0xFF
-            }
             0xC000..0xE000 => {
                 return self.ram[(address - 0xC000) as usize];
             }
@@ -213,6 +211,40 @@ impl Default for State {
     }
 }
 
+fn cpu_ram_init(cpu: &mut CPU) {
+    cpu.memory.set(0xFF10, 0x80);
+    cpu.memory.set(0xFF11, 0xBF);
+    cpu.memory.set(0xFF12, 0xF3);
+    cpu.memory.set(0xFF14, 0xBF);
+    cpu.memory.set(0xFF16, 0x3F);
+    cpu.memory.set(0xFF19, 0xBF);
+    cpu.memory.set(0xFF1A, 0x7F);
+    cpu.memory.set(0xFF1B, 0xFF);
+    cpu.memory.set(0xFF1C, 0x9F);
+    cpu.memory.set(0xFF1E, 0xBF);
+    cpu.memory.set(0xFF20, 0xFF);
+    cpu.memory.set(0xFF23, 0xBF);
+    cpu.memory.set(0xFF24, 0x77);
+    cpu.memory.set(0xFF25, 0xF3);
+    cpu.memory.set(0xFF26, 0xF1);
+    cpu.memory.set(0xFF40, 0x91);
+    cpu.memory.set(0xFF47, 0xFC);
+    cpu.memory.set(0xFF48, 0xFF);
+    cpu.memory.set(0xFF49, 0xFF);
+}
+
+#[allow(dead_code)]
+fn swap_rom_endian(rom: &ROM) -> ROM {
+    rom.chunks(2)
+        .map(|l| {
+            let mut m = l.to_owned();
+            m.reverse();
+            m
+        })
+        .flatten()
+        .collect()
+}
+
 static mut PAUSE_ENABLED: bool = false;
 static mut PAUSE_QUEUED: bool = false;
 
@@ -310,37 +342,3 @@ fn print_cycles(cycles: &i32) {
     );
     stdout().flush().unwrap();
 }
-
-fn cpu_ram_init(cpu: &mut CPU) {
-    cpu.memory.set(0xFF10, 0x80);
-    cpu.memory.set(0xFF11, 0xBF);
-    cpu.memory.set(0xFF12, 0xF3);
-    cpu.memory.set(0xFF14, 0xBF);
-    cpu.memory.set(0xFF16, 0x3F);
-    cpu.memory.set(0xFF19, 0xBF);
-    cpu.memory.set(0xFF1A, 0x7F);
-    cpu.memory.set(0xFF1B, 0xFF);
-    cpu.memory.set(0xFF1C, 0x9F);
-    cpu.memory.set(0xFF1E, 0xBF);
-    cpu.memory.set(0xFF20, 0xFF);
-    cpu.memory.set(0xFF23, 0xBF);
-    cpu.memory.set(0xFF24, 0x77);
-    cpu.memory.set(0xFF25, 0xF3);
-    cpu.memory.set(0xFF26, 0xF1);
-    cpu.memory.set(0xFF40, 0x91);
-    cpu.memory.set(0xFF47, 0xFC);
-    cpu.memory.set(0xFF48, 0xFF);
-    cpu.memory.set(0xFF49, 0xFF);
-}
-
-#[allow(dead_code)]
-fn swap_rom_endian(rom: &ROM) -> ROM {
-    rom.chunks(2)
-        .map(|l| {
-            let mut m = l.to_owned();
-            m.reverse();
-            m
-        })
-        .flatten()
-        .collect()
-}