Fix run on linux

src/memoryMap.c

@@ -1,41 +1,50 @@
 #include "memoryMap.h"
 
 uint8_t readMemory(uint16_t address, uint8_t *ram, uint8_t *rom) {
-  if (address < RAM_SIZE || address >= IO_BASE + IO_SIZE) { // FIXME: Expanded for debug
+  if ((address < RAM_SIZE && address < IO_BASE) || address >= ROM_BASE) {
+    if (address >= ROM_BASE && ram[IO_BASE + ROM_BANKED_OUT] == 0) {
+      return rom[address - ROM_BASE];
+    }
+
     return ram[address];
-  } else if (address < RAM_SIZE + IO_SIZE) {
-    uint16_t _address = address - RAM_SIZE;
+  } else {
+    uint16_t _address = address - IO_BASE;
     switch (_address) {
       case KEYBOARD_ADDRESS: {
         return getChar();
       }
+      case ROM_BANKED_OUT: {
+        return ram[IO_BASE + ROM_BANKED_OUT];
+      }
 
       default:
         break;
     }
 
     return 0;
-  } else {
-    return rom[address - RAM_SIZE - IO_SIZE];
   }
 }
 
-void writeMemory(uint16_t address, uint8_t value, uint8_t *ram, uint8_t *rom) {
-  if (address < RAM_SIZE) {
-    ram[address] = value;
-  } else if (address < RAM_SIZE + IO_SIZE || address >= IO_BASE + IO_SIZE) { // FIXME: Expanded for debug
-    uint16_t _address = address - RAM_SIZE;
+void writeMemory(uint16_t address, uint8_t value, uint8_t *ram) {
+  if ((address < RAM_SIZE && address < IO_BASE) || address >= ROM_BASE) {
+    if (address < ROM_BASE && ram[IO_BASE + ROM_BANKED_OUT] != 0) {
+      ram[address] = value;
+    }
+  } else {
+    uint16_t _address = address - IO_BASE;
     switch (_address) {
       case SCREEN_ADDRESS: {
         putChar(value);
         break;
       }
+      case ROM_BANKED_OUT: {
+        ram[IO_BASE + ROM_BANKED_OUT] = value;
+        break;
+      }
 
       default:
         break;
     }
-  } else {
-    rom[address - RAM_SIZE - IO_SIZE] = value;
   }
 }