diff --git a/constants.s b/constants.s
index 95d7786..19dc824 100644
--- a/constants.s
+++ b/constants.s
@@ -69,8 +69,8 @@ MODE1_INV	EQU	$20
 BAUD_MAX	EQU	6		; 9600 max
 
 SCUM_UPPER	EQU	-$40
-SCUM_MIXED	EQU	-$40
-SCUM_MIXEDINV	EQU	-$00
+SCUM_MIXED	EQU	-$00
+SCUM_MIXEDINV	EQU	-$40
 SCLM_UPPER	EQU	-$60
-SCLM_MIXED	EQU	-$20
-SCLM_MIXEDINV	EQU	-$60
+SCLM_MIXED	EQU	-$60
+SCLM_MIXEDINV	EQU	-$20
diff --git a/petterm.s b/petterm.s
index 4b29cc3..c4e4a11 100644
--- a/petterm.s
+++ b/petterm.s
@@ -52,6 +52,8 @@
 ; 0.2.1	
 ;	- Added control key support (OFF/RVS key)
 ;	- Added ability to re-open menu (CLR/HOME key)
+; 0.2.2
+;	- Inverted mixed-case, was backwards compared with real hardware.
 ;
 ; Written for the DASM assembler
 ;-----------------------------------------------------------------------