1 files changed, 3 insertions, 2 deletions
diff --git a/src/crt0.s b/src/crt0.s
index 399f391..44a1c93 100644
--- a/src/crt0.s
+++ b/src/crt0.s
@@ -43,11 +43,12 @@ start:
         lda MEMTOP+1
         sta sp+1
 
-; Set the keyboard to upper-/lower-case mode.
+; Set various OS variables.
         ldy     #$ff
         sty     CH              ; remove keypress which might be in the input buffer
         iny                     ; Set Y to 0
-        sty     SHFLOK
+        sty     SHFLOK          ; Turn off Caps Lock
+        sty     SOUNDR          ; Turn off SIO beep/click
 
 ; Go directly to main(). No support for CLI arguments, no saving
 ; any machine state for a clean exit, because we don't exit.