Slowly come up with design for loading from CD

include/PSX/Overlay/overlay.hpp

@@ -2,13 +2,14 @@
 #define __JABYENGINE_OVERLAY__HPP__
 #include "../../stdint.h"
 
-typedef struct __attribute__((packed)) {
+struct __attribute__((packed)) OverlayHeader {
     void   (*execute)();
     uint16_t lba_size;
-} OverlayHeader;
+};
 
-typedef struct __attribute__((packed)) {
+// Maybe encode attributes like "isLZ4" into size parameter
+struct __attribute__((packed)) OverlayLBA {
     uint16_t lba;
     uint16_t size;
-} OverlayLBA;
+};
 #endif //!__JABYENGINE_OVERLAY__HPP__