diff --git a/README.md b/README.md
index 3ac6667..5a68d50 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,8 @@ K0~K7: A0~A7
 K8: RM
 K9: DM
 K10: LM
+K11: R
+K12: L
 LR0~LR7: Y0~Y7
 ```
 
diff --git a/shifter_8b/shifter_8b.qsf b/shifter_8b/shifter_8b.qsf
index 9f2e47e..c5b672d 100644
--- a/shifter_8b/shifter_8b.qsf
+++ b/shifter_8b/shifter_8b.qsf
@@ -75,4 +75,6 @@ set_location_assignment PIN_147 -to Y5
 set_location_assignment PIN_149 -to Y6
 set_location_assignment PIN_150 -to Y7
 set_global_assignment -name MISC_FILE "D:/projects/quartus/shifter_8b/shifter_8b.dpf"
-set_global_assignment -name RESERVE_ALL_UNUSED_PINS_NO_OUTPUT_GND "AS INPUT TRI-STATED"
\ No newline at end of file
+set_global_assignment -name RESERVE_ALL_UNUSED_PINS_NO_OUTPUT_GND "AS INPUT TRI-STATED"
+set_location_assignment PIN_70 -to R
+set_location_assignment PIN_72 -to L
\ No newline at end of file