diff --git a/system/ps2_keyboard.s65 b/system/ps2_keyboard.s65
index 880357f..9736af0 100644
--- a/system/ps2_keyboard.s65
+++ b/system/ps2_keyboard.s65
@@ -293,18 +293,20 @@ scancode_handler:       .res 2  ; pointer to a function that handles new scancod
         _DisableClock
 
         ; set shift register to output
+        ; shift out the startbit = data low
+        ; set SR to shift out with PHI2 and shift out zeros
         lda ps2kb::VIA + IO::ACR
         and #<~IO::ACR_MASK::SR
-        ora #IO::ACR::SR_SOUT_PHIE
+        ora #IO::ACR::SR_SOUT_PHI2
         sta ps2kb::VIA + IO::ACR
         stz ps2kb::VIA + IO::SR
-        ; shift out the startbit = data low
-        _EnableClock    
-        _DisableClock
+
         ; reset shift register to start the count at 0 again
-        lda #IO::ACR::SR_SOUT_PHIE
-        trb ps2kb::VIA + IO::ACR
-        tsb ps2kb::VIA + IO::ACR
+        and #<~IO::ACR_MASK::SR
+        sta ps2kb::VIA + IO::ACR
+        ; set SR to shift out with external clock
+        ora #IO::ACR::SR_SOUT_PHIE
+        sta ps2kb::VIA + IO::ACR
 
         ; setup the low timer byte
         lda #<ps2kb::TIMER_SEND