Start on FILE i/O

CMakelists.txt

@@ -23,12 +23,13 @@ target_compile_options(${CMAKE_PROJECT_NAME} PRIVATE
 )
 
 target_sources(${CMAKE_PROJECT_NAME} PRIVATE
-  "src/main.c"
-  "src/ram.c"
+  src/main.c
+  src/ram.c
   src/cpu.c
   src/rom.c
-  src/io.c
-  src/memoryMap.c
+  src/memory.c
+  src/file.c
+  src/screen.c
 )
 
 target_include_directories(${CMAKE_PROJECT_NAME} PRIVATE