diff --git a/delkey.clr.left.s b/delkey.clr.left.s
index c372d7c..f26cda0 100644
--- a/delkey.clr.left.s
+++ b/delkey.clr.left.s
@@ -31,12 +31,16 @@ KSWH           EQU   $39        ;KEYBOARD SWITCH HIGH BYTE
 OURCH          EQU   $57B       ;HORIZONTAL POSITION (80-COL)
 OURCV          EQU   $5FB       ;VERTICAL POSITION (80-COL)
 KBD            EQU   $C000      ;KEYBOARD DATA + STROBE
-CXROMOFF       EQU   $C006      ;ENABLE SLOT ROMS
-CXROMON        EQU   $C007      ;TURN ON INTERNAL ROM
+CXROMOFF       EQU   $C006      ;ENABLE EXPANSION SLOTS AT $C100-$C7FF
+CXROMON        EQU   $C007      ;ENABLE INTERNAL ROM AT $C100-$C7FF
+RDCXROM        EQU   $C015      ;READ CXROM SWITCH (1 = SLOTS, 0 = ROM)
 80COLOFF       EQU   $C00C      ;Off: display 40 columns
 80COLON        EQU   $C00D      ;On: display 80 columns
+ALTCHAROFF     EQU   $C00E      ;USE PRIMARY CHARACTER SET
+ALTCHARON      EQU   $C00F      ;USE ALTERNATE CHARACTER SET
 KBDSTRB        EQU   $C010      ;CLEAR KEYBOARD STROBE
-ALTCHAR        EQU   $C01E      ;Alt char set (1 = on)
+RDALTCHAR      EQU   $C01E      ;READ STATE OF Alt char set (1 = on)
+RD80COL        EQU   $C01F      ;READ 80COL SWITCH
 COUT           EQU   $FDED      ;WRITE A CHARACTER
 
 * 80-COL SUBS INSIDE THE INTERNAL ROM
@@ -50,6 +54,7 @@ RDCHAR         EQU   $FD35
 KEYIN          EQU   $FD1B
 BASICIN        EQU   $C305
 GETLN          EQU   $FD6A
+GETLN1         EQU   $FD6F      ;GETLN WITH NO PROMPT
 NOESC          EQU   $C9B7      ;HANDLES KEY OTHER THAN ESC
 BINPUT         EQU   $C8F6
 ESCAPING       EQU   $C918