added another bus buffer for the perphieral interface so it can either be on the left or right hand side of the keyboard

Hardware/keyboard_controller/model/BC857BS.lib

@@ -0,0 +1,27 @@
+* DIODES INCORPORATED AND ITS AFFILIATED COMPANIES AND SUBSIDIARIES (COLLECTIVELY, "DIODES") 
+* PROVIDE THESE SPICE MODELS AND DATA (COLLECTIVELY, THE "SM DATA") "AS IS" AND WITHOUT ANY 
+* REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY 
+* OR FITNESS FOR A PARTICULAR PURPOSE, ANY WARRANTY ARISING FROM COURSE OF DEALING OR COURSE OF 
+* PERFORMANCE, OR ANY WARRANTY THAT ACCESS TO OR OPERATION OF THE SM DATA WILL BE UNINTERRUPTED, 
+* OR THAT THE SM DATA OR ANY SIMULATION USING THE SM DATA WILL BE ERROR FREE. TO THE MAXIMUM 
+* EXTENT PERMITTED BY LAW, IN NO EVENT WILL DIODES BE LIABLE FOR ANY DIRECT OR INDIRECT, 
+* SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH 
+* THE PRODUCTION OR USE OF SM DATA, HOWEVER CAUSED AND UNDER WHATEVER CAUSE OF ACTION OR THEORY 
+* OF LIABILITY BROUGHT (INCLUDING, WITHOUT LIMITATION, UNDER ANY CONTRACT, NEGLIGENCE OR OTHER 
+* TORT THEORY OF LIABILITY), EVEN IF DIODES HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, 
+* AND DIODES' TOTAL LIABILITY (WHETHER IN CONTRACT, TORT OR OTHERWISE) WITH REGARD TO THE SM 
+* DATA WILL NOT, IN THE AGGREGATE, EXCEED ANY SUMS PAID BY YOU TO DIODES FOR THE SM DATA.
+
+
+
+*SRC=BC857BS;DI_BC857BS;BJTs PNP; Si;  45.0V  0.100A  250MHz   Diodes Inc.
+*BJTs - Single device of dual
+.MODEL BC857 PNP (IS=10.2f NF=1.00 BF=650 VAF=121
++ IKF=42.5m ISE=2.25p NE=2.00 BR=4.00 NR=1.00
++ VAR=20.0 IKR=0.105 RE=0.715 RB=2.86 RC=0.286
++ XTB=1.5 CJE=13.3p VJE=1.10 MJE=0.500 CJC=7.80p VJC=0.300 MJC=0.300 
++ TF=586p TR=95.9n EG=1.12 )
+.SUBCKT BC857BS 1 2 3 4 5 6
+Q_A 6 2 1 BC857
+Q_B 3 5 4 BC857
+.ENDS BC857BS

Hardware/keyboard_controller/testbench/ideal_diode.wbk

@@ -0,0 +1,38 @@
+{
+  "last_sch_text_sim_command": "",
+  "tabs": [
+    {
+      "analysis": "TRAN",
+      "commands": [
+        ".tran 100u 10m 0",
+        ".kicad adjustpaths",
+        ".save all",
+        ".probe alli",
+        ".probe allp"
+      ],
+      "dottedSecondary": true,
+      "margins": {
+        "bottom": 45,
+        "left": 70,
+        "right": 70,
+        "top": 30
+      },
+      "measurements": [],
+      "showGrid": true,
+      "traces": [
+        {
+          "color": "rgb(152, 78, 163)",
+          "signal": "V(/Ideal_Diode_Testbench/BACKWARDS_IN)",
+          "trace_type": 257
+        },
+        {
+          "color": "rgb(255, 127, 0)",
+          "signal": "V(/Ideal_Diode_Testbench/BACKWARDS_OUT)",
+          "trace_type": 257
+        }
+      ]
+    }
+  ],
+  "user_defined_signals": [],
+  "version": 6
+}