--- a/astar.asm
+++ b/astar.asm
@@ -188,13 +188,16 @@
     include "game.asm"
     include "map_loader.asm"
     include "sound.asm"
-    include "memory.asm"
+    ;AtariVox memory card sync (memory.asm) left out: it is unreachable
+    ;since the memory card was disabled, and it only calls the i2c.inc
+    ;driver, which is not covered by the GPL. The space stays free so the
+    ;rest of the ROM keeps the v1.0 addresses.
+    ds 102, 0
     include "sound/patterns.asm"
     include "sound/songs.asm"
     include "sound/codes.asm"
-    include "speakjet.inc"          ;AtariVox drivers
-    include "i2c.inc"
-    I2C_SUBS scratch0
+    ;AtariVox drivers (speakjet.inc, i2c.inc) left out, see above.
+    ds 193, 0
 
 start:
     CLEAN_START
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -131,7 +131,6 @@
         DEPENDS
             "${CMAKE_CURRENT_SOURCE_DIR}/astar.asm"
             "${CMAKE_CURRENT_SOURCE_DIR}/kernel.asm"
-            "${CMAKE_CURRENT_SOURCE_DIR}/memory.asm"
             "${CMAKE_CURRENT_SOURCE_DIR}/game.asm"
             "${CMAKE_CURRENT_SOURCE_DIR}/sound.asm"
             "${CMAKE_CURRENT_SOURCE_DIR}/subroutines.asm"
@@ -144,8 +143,6 @@
             "${CMAKE_CURRENT_SOURCE_DIR}/pickup_gfx.asm"
             "${CMAKE_CURRENT_SOURCE_DIR}/pickup_colu.asm"
             "${CMAKE_CURRENT_SOURCE_DIR}/digit_gfx.asm"
-            "${CMAKE_CURRENT_SOURCE_DIR}/i2c.inc"
-            "${CMAKE_CURRENT_SOURCE_DIR}/speakjet.inc"
             "${CMAKE_CURRENT_SOURCE_DIR}/maps/map_base.asm"
             "${CMAKE_CURRENT_SOURCE_DIR}/maps/title.asm"
             "${CMAKE_CURRENT_SOURCE_DIR}/maps/end.asm"