diff --git a/src/idboot.a b/src/idboot.a
index 7c73675..cccbe21 100644
--- a/src/idboot.a
+++ b/src/idboot.a
@@ -281,5 +281,18 @@ IDBoot
          rts
 
 @notdos32e
+         lda   #$7D
+         ldx   #$5F
+         ldy   #8
+         jsr   @CompareMemoryRel
+         !byte $BD,$8A,$C0 ;LDA $C08A,X
+         !byte $B0,$03     ;BCS *+5
+         !byte $BD,$8B,$C0 ;LDA $C08B,X
+         bcs   @notdos32f
+         inc   $7D60
+         ldx   #$60
+         rts
+
+@notdos32f
          rts
 }