diff --git a/include/cx16.h b/include/cx16.h
index 5bbd21247..6a3705631 100644
--- a/include/cx16.h
+++ b/include/cx16.h
@@ -3,7 +3,7 @@
 /*                                  cx16.h                                   */
 /*                                                                           */
 /*                      CX16 system-specific definitions                     */
-/*                             For prerelease 39                             */
+/*                             For prerelease 43                             */
 /*                                                                           */
 /*                                                                           */
 /* This software is provided "as-is", without any expressed or implied       */
@@ -176,6 +176,11 @@ enum {
 #define VIDEOMODE_40x15         0x04
 #define VIDEOMODE_20x30         0x05
 #define VIDEOMODE_20x15         0x06
+#define VIDEOMODE_22x23         0x07
+#define VIDEOMODE_64x50         0x08
+#define VIDEOMODE_64x25         0x09
+#define VIDEOMODE_32x50         0x0A
+#define VIDEOMODE_32x25         0x0B
 #define VIDEOMODE_80COL         VIDEOMODE_80x60
 #define VIDEOMODE_40COL         VIDEOMODE_40x30
 #define VIDEOMODE_320x240       0x80
diff --git a/libsrc/cx16/videomode.s b/libsrc/cx16/videomode.s
index 998316858..46f461fca 100644
--- a/libsrc/cx16/videomode.s
+++ b/libsrc/cx16/videomode.s
@@ -9,6 +9,13 @@
 ; #define VIDEOMODE_40x15         0x04
 ; #define VIDEOMODE_20x30         0x05
 ; #define VIDEOMODE_20x15         0x06
+; #define VIDEOMODE_22x23         0x07
+; #define VIDEOMODE_64x50         0x08
+; #define VIDEOMODE_64x25         0x09
+; #define VIDEOMODE_32x50         0x0A
+; #define VIDEOMODE_32x25         0x0B
+; #define VIDEOMODE_80COL         VIDEOMODE_80x60
+; #define VIDEOMODE_40COL         VIDEOMODE_40x30
 ; #define VIDEOMODE_320x240       0x80
 ; #define VIDEOMODE_SWAP          (-1)
 ;