diff --git a/include/cx16.h b/include/cx16.h
index 5bbd21247..ad8afe200 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..03374642f 100644
--- a/libsrc/cx16/videomode.s
+++ b/libsrc/cx16/videomode.s
@@ -2,15 +2,22 @@
 ; 2022-03-28, Greg King
 ;
 ; /* Video mode defines */
-; #define VIDEOMODE_80x60         0x00
-; #define VIDEOMODE_80x30         0x01
-; #define VIDEOMODE_40x60         0x02
-; #define VIDEOMODE_40x30         0x03
-; #define VIDEOMODE_40x15         0x04
-; #define VIDEOMODE_20x30         0x05
-; #define VIDEOMODE_20x15         0x06
-; #define VIDEOMODE_320x240       0x80
-; #define VIDEOMODE_SWAP          (-1)
+; #define VIDEOMODE_80x60	0x00
+; #define VIDEOMODE_80x30	0x01
+; #define VIDEOMODE_40x60	0x02
+; #define VIDEOMODE_40x30	0x03
+; #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)
 ;
 ; signed char __fastcall__ videomode (signed char Mode);
 ; /* Set the video mode, return the old mode.