diff --git a/hardware/interface-osi/Sound.sch b/hardware/interface-osi/Sound.sch
index 6d2a44a..a738d4d 100644
--- a/hardware/interface-osi/Sound.sch
+++ b/hardware/interface-osi/Sound.sch
@@ -4,11 +4,11 @@ EELAYER END
 $Descr A4 11693 8268
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 Sheet 2 3
-Title "Sound Circuit"
-Date ""
+Title "OSI Interface"
+Date "2020-04-23"
 Rev "2"
-Comp ""
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 Comment2 ""
 Comment3 ""
 Comment4 ""
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diff --git a/hardware/interface-osi/interface-osi.sch b/hardware/interface-osi/interface-osi.sch
index ccceb48..1259b53 100644
--- a/hardware/interface-osi/interface-osi.sch
+++ b/hardware/interface-osi/interface-osi.sch
@@ -4,7 +4,7 @@ EELAYER END
 $Descr USLedger 17000 11000
 encoding utf-8
 Sheet 1 3
-Title "OSI Interface for Universal Retro Keyboard"
+Title "OSI Interface"
 Date "2019-08-25"
 Rev "1.0"
 Comp "OSIWeb.org"
@@ -13,24 +13,13 @@ Comment2 ""
 Comment3 ""
 Comment4 ""
 $EndDescr
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 F 2 "Package_DIP:DIP-20_W7.62mm" H 5600 4500 50  0001 C CNN
 F 3 "https://assets.nexperia.com/documents/data-sheet/74HC_HCT240.pdf" H 5600 4500 50  0001 C CNN
@@ -616,10 +579,10 @@ Connection ~ 7300 4900
 Wire Wire Line
 	7300 4900 6100 4900
 $Comp
-L 74xx:74LS373 U6
+L 74xx:74LS373 U5
 U 1 1 5EE34D09
 P 9250 3500
-F 0 "U6" H 9400 4150 50  0000 C CNN
+F 0 "U5" H 9400 4150 50  0000 C CNN
 F 1 "74LS373" H 9000 4150 50  0000 C CNN
 F 2 "Package_DIP:DIP-20_W7.62mm" H 9250 3500 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS373" H 9250 3500 50  0001 C CNN
@@ -627,12 +590,12 @@ F 3 "http://www.ti.com/lit/gpn/sn74LS373" H 9250 3500 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 $Comp
-L 74xx:74LS138 U2
+L 74xx:74LS138 U1
 U 1 1 5EE9FB59
 P 3200 7000
-F 0 "U2" H 3200 7781 50  0000 C CNN
+F 0 "U1" H 3200 7781 50  0000 C CNN
 F 1 "74LS138" H 3200 7690 50  0000 C CNN
-F 2 "" H 3200 7000 50  0001 C CNN
+F 2 "Package_DIP:DIP-16_W7.62mm" H 3200 7000 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS138" H 3200 7000 50  0001 C CNN
 	1    3200 7000
 	1    0    0    -1  
@@ -646,10 +609,10 @@ Wire Wire Line
 Wire Wire Line
 	2300 7400 2700 7400
 $Comp
-L power:GND #PWR07
+L power:GND #PWR05
 U 1 1 5EF3D06A
 P 3200 7700
-F 0 "#PWR07" H 3200 7450 50  0001 C CNN
+F 0 "#PWR05" H 3200 7450 50  0001 C CNN
 F 1 "GND" H 3205 7527 50  0000 C CNN
 F 2 "" H 3200 7700 50  0001 C CNN
 F 3 "" H 3200 7700 50  0001 C CNN
@@ -658,10 +621,10 @@ F 3 "" H 3200 7700 50  0001 C CNN
 $EndComp
 Connection ~ 3200 7700
 $Comp
-L 74xx:74LS04 U3
+L 74xx:74LS04 U2
 U 2 1 5EF63528
 P 4400 7100
-F 0 "U3" H 4450 7250 50  0000 C CNN
+F 0 "U2" H 4450 7250 50  0000 C CNN
 F 1 "74LS04" H 4600 7000 50  0000 C CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 4400 7100 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS04" H 4400 7100 50  0001 C CNN
@@ -669,10 +632,10 @@ F 3 "http://www.ti.com/lit/gpn/sn74LS04" H 4400 7100 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 $Comp
-L 74xx:74LS04 U3
+L 74xx:74LS04 U2
 U 4 1 5EF84CE1
 P 4400 8300
-F 0 "U3" H 4500 8450 50  0000 C CNN
+F 0 "U2" H 4500 8450 50  0000 C CNN
 F 1 "74LS04" H 4600 8150 50  0000 C CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 4400 8300 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS04" H 4400 8300 50  0001 C CNN
@@ -688,7 +651,7 @@ Wire Wire Line
 Wire Wire Line
 	3950 7400 3950 7700
 Wire Wire Line
-	1800 8300 4100 8300
+	1800 8300 3450 8300
 Wire Wire Line
 	2500 9550 2800 9550
 Wire Wire Line
@@ -772,7 +735,7 @@ Wire Wire Line
 Text Label 1600 4500 0    50   ~ 0
 NI
 Text Label 1600 4600 0    50   ~ 0
-~SI
+~S1
 Wire Wire Line
 	1500 4700 2400 4700
 Wire Wire Line
@@ -1106,7 +1069,7 @@ Wire Wire Line
 Wire Wire Line
 	3250 4600 4900 4600
 Wire Wire Line
-	4700 8300 10400 8300
+	4700 8300 5650 8300
 Wire Wire Line
 	1900 8000 10400 8000
 Wire Wire Line
@@ -1190,10 +1153,10 @@ Wire Wire Line
 Wire Wire Line
 	3900 6600 4100 6600
 $Comp
-L 74xx:74LS04 U3
+L 74xx:74LS04 U2
 U 1 1 5EF5DD97
 P 4400 6600
-F 0 "U3" H 4450 6750 50  0000 C CNN
+F 0 "U2" H 4450 6750 50  0000 C CNN
 F 1 "74LS04" H 4450 6450 50  0000 C CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 4400 6600 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS04" H 4400 6600 50  0001 C CNN
@@ -1212,7 +1175,7 @@ U 1 1 6064F317
 P 4650 9400
 F 0 "C5" H 4765 9446 50  0000 L CNN
 F 1 "C" H 4765 9355 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 4688 9250 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 4688 9250 50  0001 C CNN
 F 3 "~" H 4650 9400 50  0001 C CNN
 	1    4650 9400
 	1    0    0    -1  
@@ -1223,7 +1186,7 @@ U 1 1 6064F31D
 P 5050 9400
 F 0 "C6" H 5165 9446 50  0000 L CNN
 F 1 "C" H 5165 9355 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 5088 9250 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 5088 9250 50  0001 C CNN
 F 3 "~" H 5050 9400 50  0001 C CNN
 	1    5050 9400
 	1    0    0    -1  
@@ -1234,7 +1197,7 @@ U 1 1 6064F323
 P 5450 9400
 F 0 "C7" H 5565 9446 50  0000 L CNN
 F 1 "C" H 5565 9355 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 5488 9250 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 5488 9250 50  0001 C CNN
 F 3 "~" H 5450 9400 50  0001 C CNN
 	1    5450 9400
 	1    0    0    -1  
@@ -1245,7 +1208,7 @@ U 1 1 6064F329
 P 5850 9400
 F 0 "C8" H 5965 9446 50  0000 L CNN
 F 1 "C" H 5965 9355 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 5888 9250 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 5888 9250 50  0001 C CNN
 F 3 "~" H 5850 9400 50  0001 C CNN
 	1    5850 9400
 	1    0    0    -1  
@@ -1280,7 +1243,7 @@ U 1 1 606D38CE
 P 6250 9400
 F 0 "C9" H 6365 9446 50  0000 L CNN
 F 1 "C" H 6365 9355 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 6288 9250 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 6288 9250 50  0001 C CNN
 F 3 "~" H 6250 9400 50  0001 C CNN
 	1    6250 9400
 	1    0    0    -1  
@@ -1351,10 +1314,10 @@ Wire Wire Line
 Wire Wire Line
 	13100 7400 14300 7400
 $Comp
-L power:GND #PWR016
+L power:GND #PWR014
 U 1 1 609E5C10
 P 12800 8100
-F 0 "#PWR016" H 12800 7850 50  0001 C CNN
+F 0 "#PWR014" H 12800 7850 50  0001 C CNN
 F 1 "GND" H 12805 7927 50  0000 C CNN
 F 2 "" H 12800 8100 50  0001 C CNN
 F 3 "" H 12800 8100 50  0001 C CNN
@@ -1371,7 +1334,7 @@ U 1 1 60A345E3
 P 14500 7100
 F 0 "J4" H 14460 7720 50  0000 L CNN
 F 1 "Sound" H 14180 6390 50  0000 L CNN
-F 2 "" H 14500 7100 50  0001 C CNN
+F 2 "Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Horizontal" H 14500 7100 50  0001 C CNN
 F 3 "~" H 14500 7100 50  0001 C CNN
 	1    14500 7100
 	1    0    0    -1  
@@ -1379,10 +1342,10 @@ $EndComp
 Wire Wire Line
 	3950 7700 4100 7700
 $Comp
-L 74xx:74LS04 U3
+L 74xx:74LS04 U2
 U 3 1 5EF73E4B
 P 4400 7700
-F 0 "U3" H 4450 7850 50  0000 C CNN
+F 0 "U2" H 4450 7850 50  0000 C CNN
 F 1 "74LS04" H 4500 7550 50  0000 C CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 4400 7700 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS04" H 4400 7700 50  0001 C CNN
@@ -1407,7 +1370,7 @@ F7 "KD5" I L 10400 7150 50
 F8 "KD6" I L 10400 7250 50 
 F9 "KD7" I L 10400 7350 50 
 F10 "NI" I L 10400 8000 50 
-F11 "SI" I L 10400 8300 50 
+F11 "S1" I L 10400 8300 50 
 F12 "Noise1" O R 12100 7700 50 
 F13 "Noise2" O R 12100 7500 50 
 F14 "SOUND_EN" I L 10400 7700 50 
@@ -1478,7 +1441,7 @@ U 1 1 61CE638B
 P 6650 9400
 F 0 "C10" H 6765 9446 50  0000 L CNN
 F 1 "C" H 6765 9355 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 6688 9250 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 6688 9250 50  0001 C CNN
 F 3 "~" H 6650 9400 50  0001 C CNN
 	1    6650 9400
 	1    0    0    -1  
@@ -1493,7 +1456,7 @@ U 1 1 61CE6393
 P 7050 9400
 F 0 "C11" H 7165 9446 50  0000 L CNN
 F 1 "C" H 7165 9355 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 7088 9250 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 7088 9250 50  0001 C CNN
 F 3 "~" H 7050 9400 50  0001 C CNN
 	1    7050 9400
 	1    0    0    -1  
@@ -1502,6 +1465,34 @@ Wire Wire Line
 	6650 9250 7050 9250
 Wire Wire Line
 	6650 9550 7050 9550
+Text Notes 7800 9650 0    50   ~ 0
+S1 is from Video timing chain.  \n- For 540A board, this must be jumpered to pin 15, and Jumper J1 must be set to “S1”.\n- For 540B board, set jumper to “~S1~”
+$Comp
+L Jumper:Jumper_3_Open JP?
+U 1 1 62069817
+P 5650 8550
+AR Path="/5D770C6B/62069817" Ref="JP?"  Part="1" 
+AR Path="/62069817" Ref="JP?"  Part="1" 
+F 0 "JP?" V 5650 8774 50  0000 C CNN
+F 1 "Jumper_3_Open" V 6000 8700 50  0000 C CNN
+F 2 "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal" H 5650 8550 50  0001 C CNN
+F 3 "~" H 5650 8550 50  0001 C CNN
+	1    5650 8550
+	0    -1   -1   0   
+$EndComp
+Wire Wire Line
+	3450 8300 3450 8800
+Wire Wire Line
+	3450 8800 5650 8800
+Connection ~ 3450 8300
+Wire Wire Line
+	3450 8300 4100 8300
+Wire Wire Line
+	5800 8550 7150 8550
+Wire Wire Line
+	7150 8550 7150 8300
+Wire Wire Line
+	7150 8300 10400 8300
 Wire Bus Line
 	12800 1150 12800 1600
 Wire Bus Line
@@ -1510,4 +1501,8 @@ Wire Bus Line
 	13000 5800 13000 7300
 Wire Bus Line
 	11200 1150 11200 5800
+Text Notes 5750 8800 0    50   ~ 0
+S1
+Text Notes 5750 8350 0    50   ~ 0
+~S1
 $EndSCHEMATC
diff --git a/hardware/interface-osi/special_keys.sch b/hardware/interface-osi/special_keys.sch
index 7980e8b..63e901c 100644
--- a/hardware/interface-osi/special_keys.sch
+++ b/hardware/interface-osi/special_keys.sch
@@ -4,11 +4,11 @@ EELAYER END
 $Descr A4 11693 8268
 encoding utf-8
 Sheet 3 3
-Title ""
-Date ""
+Title "OSI Interface"
+Date "2020-04-23"
 Rev ""
-Comp ""
-Comment1 ""
+Comp "OSIWeb.org"
+Comment1 "Reset and ShiftLock circuits"
 Comment2 ""
 Comment3 ""
 Comment4 ""
@@ -17,9 +17,9 @@ Text HLabel 1800 4250 0    50   UnSpc ~ 0
 ShiftLock_1
 Text HLabel 1750 5350 0    50   UnSpc ~ 0
 ShiftLock_2
-Text HLabel 8950 6150 2    50   Output ~ 0
+Text HLabel 8000 5350 2    50   Output ~ 0
 ShiftLock_LED+
-Text HLabel 8950 6250 2    50   Output ~ 0
+Text HLabel 8000 5550 2    50   Output ~ 0
 ShiftLock_LED-
 Text HLabel 1750 1400 0    50   UnSpc ~ 0
 Break_1
@@ -28,10 +28,10 @@ Break_2
 Text HLabel 9100 2550 2    50   Output ~ 0
 ~RESET
 $Comp
-L 74xx:74LS14 U11
+L 74xx:74LS14 U10
 U 1 1 60F8E3EB
 P 5600 4500
-F 0 "U11" H 5600 4817 50  0000 C CNN
+F 0 "U10" H 5600 4817 50  0000 C CNN
 F 1 "74LS14" H 5600 4726 50  0000 C CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 5600 4500 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 5600 4500 50  0001 C CNN
@@ -39,10 +39,10 @@ F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 5600 4500 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 $Comp
-L 74xx:74LS14 U11
+L 74xx:74LS14 U10
 U 2 1 60F90788
 P 5600 5350
-F 0 "U11" H 5600 5667 50  0000 C CNN
+F 0 "U10" H 5600 5667 50  0000 C CNN
 F 1 "74LS14" H 5600 5576 50  0000 C CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 5600 5350 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 5600 5350 50  0001 C CNN
@@ -50,10 +50,10 @@ F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 5600 5350 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 $Comp
-L 74xx:74LS14 U11
+L 74xx:74LS14 U10
 U 3 1 60F91229
 P 3650 4900
-F 0 "U11" H 3650 5217 50  0000 C CNN
+F 0 "U10" H 3650 5217 50  0000 C CNN
 F 1 "74LS14" H 3650 5126 50  0000 C CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 3650 4900 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 3650 4900 50  0001 C CNN
@@ -61,10 +61,10 @@ F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 3650 4900 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 $Comp
-L 74xx:74LS14 U11
+L 74xx:74LS14 U10
 U 4 1 60F9322B
 P 4150 1800
-F 0 "U11" H 4150 2117 50  0000 C CNN
+F 0 "U10" H 4150 2117 50  0000 C CNN
 F 1 "74LS14" H 4150 2026 50  0000 C CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 4150 1800 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 4150 1800 50  0001 C CNN
@@ -72,10 +72,10 @@ F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 4150 1800 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 $Comp
-L 74xx:74LS14 U11
+L 74xx:74LS14 U10
 U 6 1 60F956F9
 P 8500 2550
-F 0 "U11" H 8500 2867 50  0000 C CNN
+F 0 "U10" H 8500 2867 50  0000 C CNN
 F 1 "74LS14" H 8500 2776 50  0000 C CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 8500 2550 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 8500 2550 50  0001 C CNN
@@ -128,7 +128,6 @@ Wire Wire Line
 	6150 4850 6150 5350
 Wire Wire Line
 	6150 5350 5900 5350
-Connection ~ 6150 5350
 Connection ~ 4900 4500
 Wire Wire Line
 	4850 5350 4350 5350
@@ -136,10 +135,10 @@ Connection ~ 4350 5350
 Wire Wire Line
 	4350 5350 4350 5500
 $Comp
-L power:GND #PWR033
+L power:GND #PWR031
 U 1 1 60FB81DD
 P 4350 5900
-F 0 "#PWR033" H 4350 5650 50  0001 C CNN
+F 0 "#PWR031" H 4350 5650 50  0001 C CNN
 F 1 "GND" H 4355 5727 50  0000 C CNN
 F 2 "" H 4350 5900 50  0001 C CNN
 F 3 "" H 4350 5900 50  0001 C CNN
@@ -152,7 +151,7 @@ U 1 1 60FCB99A
 P 4350 5650
 F 0 "C19" H 4400 5550 50  0000 L CNN
 F 1 "0.1uF" H 4000 5750 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 4388 5500 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 4388 5500 50  0001 C CNN
 F 3 "~" H 4350 5650 50  0001 C CNN
 	1    4350 5650
 	-1   0    0    1   
@@ -176,16 +175,16 @@ U 1 1 60FF7386
 P 3000 2150
 F 0 "C18" H 3115 2196 50  0000 L CNN
 F 1 "0.33uF" H 3115 2105 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 3038 2000 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 3038 2000 50  0001 C CNN
 F 3 "~" H 3000 2150 50  0001 C CNN
 	1    3000 2150
 	1    0    0    -1  
 $EndComp
 $Comp
-L power:GND #PWR032
+L power:GND #PWR030
 U 1 1 60FF7396
 P 3000 2400
-F 0 "#PWR032" H 3000 2150 50  0001 C CNN
+F 0 "#PWR030" H 3000 2150 50  0001 C CNN
 F 1 "GND" H 3005 2227 50  0000 C CNN
 F 2 "" H 3000 2400 50  0001 C CNN
 F 3 "" H 3000 2400 50  0001 C CNN
@@ -195,60 +194,60 @@ $EndComp
 Wire Wire Line
 	3000 2400 3000 2300
 $Comp
-L 4xxx:4066 U12
+L 4xxx:4066 U11
 U 1 1 60FFF569
-P 7350 4500
-F 0 "U12" V 7396 4372 50  0000 R CNN
-F 1 "4066" V 7305 4372 50  0000 R CNN
-F 2 "" H 7350 4500 50  0001 C CNN
-F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7350 4500 50  0001 C CNN
-	1    7350 4500
+P 7350 4250
+F 0 "U11" V 7396 4122 50  0000 R CNN
+F 1 "4066" V 7305 4122 50  0000 R CNN
+F 2 "Package_DIP:DIP-14_W7.62mm" H 7350 4250 50  0001 C CNN
+F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7350 4250 50  0001 C CNN
+	1    7350 4250
 	0    -1   -1   0   
 $EndComp
 $Comp
-L 4xxx:4066 U12
+L 4xxx:4066 U11
 U 2 1 6100162B
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-F 0 "U12" V 4396 4772 50  0000 R CNN
+F 0 "U11" V 4396 4772 50  0000 R CNN
 F 1 "4066" V 4305 4772 50  0000 R CNN
-F 2 "" H 4350 4900 50  0001 C CNN
+F 2 "Package_DIP:DIP-14_W7.62mm" H 4350 4900 50  0001 C CNN
 F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 4350 4900 50  0001 C CNN
 	2    4350 4900
 	0    -1   -1   0   
 $EndComp
 $Comp
-L 4xxx:4066 U12
+L 4xxx:4066 U11
 U 3 1 61001D7C
-P 8300 4500
-F 0 "U12" V 8346 4372 50  0000 R CNN
-F 1 "4066" V 8255 4372 50  0000 R CNN
-F 2 "" H 8300 4500 50  0001 C CNN
-F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 8300 4500 50  0001 C CNN
-	3    8300 4500
-	0    -1   -1   0   
+P 7250 5550
+F 0 "U11" V 7296 5422 50  0000 R CNN
+F 1 "4066" V 7205 5422 50  0000 R CNN
+F 2 "Package_DIP:DIP-14_W7.62mm" H 7250 5550 50  0001 C CNN
+F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7250 5550 50  0001 C CNN
+	3    7250 5550
+	1    0    0    -1  
 $EndComp
 $Comp
-L 4xxx:4066 U12
+L 4xxx:4066 U11
 U 4 1 6100250F
 P 7100 2550
-F 0 "U12" H 7100 2377 50  0000 C CNN
+F 0 "U11" H 7100 2377 50  0000 C CNN
 F 1 "4066" H 7100 2286 50  0000 C CNN
-F 2 "" H 7100 2550 50  0001 C CNN
+F 2 "Package_DIP:DIP-14_W7.62mm" H 7100 2550 50  0001 C CNN
 F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 7100 2550 50  0001 C CNN
 	4    7100 2550
 	-1   0    0    -1  
 $EndComp
 Wire Wire Line
-	6000 4500 7050 4500
+	6000 4500 6650 4500
 $Comp
 L Diode:1N914 D18
 U 1 1 61026B80
-P 8800 5500
-F 0 "D18" H 8800 5284 50  0000 C CNN
-F 1 "1N914" H 8800 5375 50  0000 C CNN
-F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 8800 5325 50  0001 C CNN
-F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 8800 5500 50  0001 C CNN
-	1    8800 5500
+P 7700 4750
+F 0 "D18" H 7700 4534 50  0000 C CNN
+F 1 "1N914" H 7700 4625 50  0000 C CNN
+F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 7700 4575 50  0001 C CNN
+F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 7700 4750 50  0001 C CNN
+	1    7700 4750
 	-1   0    0    1   
 $EndComp
 Wire Wire Line
@@ -262,10 +261,10 @@ Wire Wire Line
 Wire Wire Line
 	2250 5350 2250 5800
 $Comp
-L power:GND #PWR028
+L power:GND #PWR026
 U 1 1 61054316
 P 2250 5800
-F 0 "#PWR028" H 2250 5550 50  0001 C CNN
+F 0 "#PWR026" H 2250 5550 50  0001 C CNN
 F 1 "GND" H 2255 5627 50  0000 C CNN
 F 2 "" H 2250 5800 50  0001 C CNN
 F 3 "" H 2250 5800 50  0001 C CNN
@@ -273,10 +272,10 @@ F 3 "" H 2250 5800 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 $Comp
-L power:+5V #PWR029
+L power:+5V #PWR027
 U 1 1 6105BADF
 P 2700 3750
-F 0 "#PWR029" H 2700 3600 50  0001 C CNN
+F 0 "#PWR027" H 2700 3600 50  0001 C CNN
 F 1 "+5V" H 2715 3923 50  0000 C CNN
 F 2 "" H 2700 3750 50  0001 C CNN
 F 3 "" H 2700 3750 50  0001 C CNN
@@ -289,7 +288,7 @@ U 1 1 6106E29B
 P 2700 5650
 F 0 "C17" H 2750 5550 50  0000 L CNN
 F 1 "0.33uF" H 2350 5750 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 2738 5500 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 2738 5500 50  0001 C CNN
 F 3 "~" H 2700 5650 50  0001 C CNN
 	1    2700 5650
 	-1   0    0    1   
@@ -297,10 +296,10 @@ $EndComp
 Wire Wire Line
 	2700 4900 2700 5500
 $Comp
-L power:GND #PWR030
+L power:GND #PWR028
 U 1 1 610755A7
 P 2700 5900
-F 0 "#PWR030" H 2700 5650 50  0001 C CNN
+F 0 "#PWR028" H 2700 5650 50  0001 C CNN
 F 1 "GND" H 2705 5727 50  0000 C CNN
 F 2 "" H 2700 5900 50  0001 C CNN
 F 3 "" H 2700 5900 50  0001 C CNN
@@ -311,121 +310,70 @@ Wire Wire Line
 	2700 5900 2700 5800
 Wire Wire Line
 	3950 4900 4000 4900
-Wire Wire Line
-	4000 4900 4000 4050
-Wire Wire Line
-	4000 4050 7900 4050
-Wire Wire Line
-	7900 4050 7900 4500
-Wire Wire Line
-	7900 4500 8000 4500
 Connection ~ 4000 4900
 Wire Wire Line
 	4000 4900 4050 4900
 Wire Wire Line
-	7350 4200 7350 3850
-Wire Wire Line
-	7350 3850 8300 3850
-Wire Wire Line
-	8300 3850 8300 4200
-Connection ~ 8300 3850
-Wire Wire Line
-	8300 3850 8900 3850
+	7350 3950 7350 3850
 $Comp
-L Jumper:Jumper_3_Open JP2
+L Jumper:Jumper_3_Open JP1
 U 1 1 6116CC01
-P 7850 5100
-F 0 "JP2" H 7850 5324 50  0000 C CNN
-F 1 "Jumper_3_Open" H 7850 5233 50  0000 C CNN
-F 2 "" H 7850 5100 50  0001 C CNN
-F 3 "~" H 7850 5100 50  0001 C CNN
-	1    7850 5100
-	1    0    0    -1  
+P 6650 4250
+F 0 "JP1" V 6600 4450 50  0000 C CNN
+F 1 "ShiftLock Select" V 6700 4650 50  0000 C CNN
+F 2 "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal" H 6650 4250 50  0001 C CNN
+F 3 "~" H 6650 4250 50  0001 C CNN
+	1    6650 4250
+	0    -1   1    0   
 $EndComp
 Wire Wire Line
-	7350 5100 7600 5100
-Wire Wire Line
-	7350 4800 7350 5100
-Wire Wire Line
-	8100 5100 8300 5100
-Wire Wire Line
-	8300 5100 8300 4800
-Wire Wire Line
-	7850 5250 7850 5500
-Wire Wire Line
-	7850 5500 8650 5500
+	7350 4550 7350 4750
 $Comp
-L power:+5V #PWR031
+L power:+5V #PWR029
 U 1 1 6119EF3F
 P 3000 850
-F 0 "#PWR031" H 3000 700 50  0001 C CNN
+F 0 "#PWR029" H 3000 700 50  0001 C CNN
 F 1 "+5V" H 3015 1023 50  0000 C CNN
 F 2 "" H 3000 850 50  0001 C CNN
 F 3 "" H 3000 850 50  0001 C CNN
 	1    3000 850 
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	3250 4900 3250 6600
-Wire Wire Line
-	3250 6600 6350 6600
-Connection ~ 3250 4900
-Wire Wire Line
-	3250 4900 3350 4900
 $Comp
-L Jumper:Jumper_3_Open JP1
-U 1 1 6120B4E1
-P 6350 6250
-F 0 "JP1" V 6396 6337 50  0000 L CNN
-F 1 "Jumper_3_Open" V 6305 6337 50  0000 L CNN
-F 2 "" H 6350 6250 50  0001 C CNN
-F 3 "~" H 6350 6250 50  0001 C CNN
-	1    6350 6250
-	0    -1   -1   0   
-$EndComp
-Wire Wire Line
-	6350 5350 6350 6000
-Wire Wire Line
-	6150 5350 6350 5350
-Wire Wire Line
-	6350 6600 6350 6500
-$Comp
-L power:+5V #PWR036
+L power:+5V #PWR035
 U 1 1 61245055
-P 8800 6000
-F 0 "#PWR036" H 8800 5850 50  0001 C CNN
-F 1 "+5V" H 8815 6173 50  0000 C CNN
-F 2 "" H 8800 6000 50  0001 C CNN
-F 3 "" H 8800 6000 50  0001 C CNN
-	1    8800 6000
+P 7850 5150
+F 0 "#PWR035" H 7850 5000 50  0001 C CNN
+F 1 "+5V" H 7865 5323 50  0000 C CNN
+F 2 "" H 7850 5150 50  0001 C CNN
+F 3 "" H 7850 5150 50  0001 C CNN
+	1    7850 5150
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	8800 6000 8800 6150
+	7850 5150 7850 5350
 Wire Wire Line
-	8800 6150 8950 6150
-Text HLabel 8900 3850 2    50   Input ~ 0
+	7850 5350 8000 5350
+Text HLabel 8000 3850 2    50   Input ~ 0
 Col0
-Text HLabel 8950 5500 2    50   Output ~ 0
+Text HLabel 8000 4750 2    50   Output ~ 0
 Row0
-Wire Wire Line
-	6500 6250 8950 6250
 $Comp
 L Device:C C20
 U 1 1 61431129
 P 6150 2900
 F 0 "C20" H 6265 2946 50  0000 L CNN
 F 1 "0.33uF" H 6265 2855 50  0000 L CNN
-F 2 "Capacitor_THT:CP_Radial_Tantal_D4.5mm_P2.50mm" H 6188 2750 50  0001 C CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 6188 2750 50  0001 C CNN
 F 3 "~" H 6150 2900 50  0001 C CNN
 	1    6150 2900
 	1    0    0    -1  
 $EndComp
 $Comp
-L power:GND #PWR034
+L power:GND #PWR032
 U 1 1 6143112F
 P 6150 3150
-F 0 "#PWR034" H 6150 2900 50  0001 C CNN
+F 0 "#PWR032" H 6150 2900 50  0001 C CNN
 F 1 "GND" H 6155 2977 50  0000 C CNN
 F 2 "" H 6150 3150 50  0001 C CNN
 F 3 "" H 6150 3150 50  0001 C CNN
@@ -477,10 +425,10 @@ Wire Wire Line
 Wire Wire Line
 	7100 1800 7100 2250
 $Comp
-L 74xx:74LS14 U11
+L 74xx:74LS14 U10
 U 5 1 6168AA55
 P 5250 2550
-F 0 "U11" H 5250 2867 50  0000 C CNN
+F 0 "U10" H 5250 2867 50  0000 C CNN
 F 1 "74LS14" H 5250 2776 50  0000 C CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 5250 2550 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 5250 2550 50  0001 C CNN
@@ -520,12 +468,12 @@ F 3 "~" H 7800 2850 50  0001 C CNN
 $EndComp
 Connection ~ 7800 2550
 Wire Wire Line
-	7800 2550 8200 2550
+	7800 2550 8050 2550
 $Comp
-L power:GND #PWR035
+L power:GND #PWR034
 U 1 1 6170BBEC
 P 7800 3150
-F 0 "#PWR035" H 7800 2900 50  0001 C CNN
+F 0 "#PWR034" H 7800 2900 50  0001 C CNN
 F 1 "GND" H 7805 2977 50  0000 C CNN
 F 2 "" H 7800 3150 50  0001 C CNN
 F 3 "" H 7800 3150 50  0001 C CNN
@@ -562,10 +510,10 @@ Wire Wire Line
 Wire Wire Line
 	2150 1800 2150 2400
 $Comp
-L power:GND #PWR027
+L power:GND #PWR025
 U 1 1 617A42C5
 P 2150 2400
-F 0 "#PWR027" H 2150 2150 50  0001 C CNN
+F 0 "#PWR025" H 2150 2150 50  0001 C CNN
 F 1 "GND" H 2155 2227 50  0000 C CNN
 F 2 "" H 2150 2400 50  0001 C CNN
 F 3 "" H 2150 2400 50  0001 C CNN
@@ -592,8 +540,6 @@ F 3 "~" H 2700 4600 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 Connection ~ 2700 4900
-Wire Wire Line
-	2700 4900 3250 4900
 $Comp
 L Device:R_US R11
 U 1 1 61C4846D
@@ -617,10 +563,10 @@ Reset Delay time: about 3.3 sec\nReset delay is approx. proportional to 10sec/uF
 Text Notes 6400 3150 0    50   ~ 0
 ~RESET~ pulse is approx 50 usec.
 $Comp
-L 74xx:74LS14 U11
+L 74xx:74LS14 U10
 U 7 1 61CB40D7
 P 10450 1550
-F 0 "U11" H 10680 1596 50  0000 L CNN
+F 0 "U10" H 10680 1596 50  0000 L CNN
 F 1 "74LS14" H 10680 1505 50  0000 L CNN
 F 2 "Package_DIP:DIP-14_W7.62mm" H 10450 1550 50  0001 C CNN
 F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 10450 1550 50  0001 C CNN
@@ -628,12 +574,12 @@ F 3 "http://www.ti.com/lit/gpn/sn74LS14" H 10450 1550 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 $Comp
-L 4xxx:4066 U12
+L 4xxx:4066 U11
 U 5 1 61CB40DD
 P 9750 1550
-F 0 "U12" H 9980 1596 50  0000 L CNN
+F 0 "U11" H 9980 1596 50  0000 L CNN
 F 1 "4066" H 9980 1505 50  0000 L CNN
-F 2 "" H 9750 1550 50  0001 C CNN
+F 2 "Package_DIP:DIP-14_W7.62mm" H 9750 1550 50  0001 C CNN
 F 3 "http://www.ti.com/lit/ds/symlink/cd4066b.pdf" H 9750 1550 50  0001 C CNN
 	5    9750 1550
 	1    0    0    -1  
@@ -682,4 +628,94 @@ Wire Wire Line
 Connection ~ 10100 950 
 Wire Wire Line
 	10100 950  10450 950 
+$Comp
+L Diode:1N914 D19
+U 1 1 61FD244F
+P 8050 2300
+F 0 "D19" V 8150 2250 50  0000 C CNN
+F 1 "1N914" V 7950 2150 50  0000 C CNN
+F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 8050 2125 50  0001 C CNN
+F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 8050 2300 50  0001 C CNN
+	1    8050 2300
+	0    -1   -1   0   
+$EndComp
+$Comp
+L Device:C C21
+U 1 1 61FD5372
+P 8050 1900
+F 0 "C21" H 8165 1946 50  0000 L CNN
+F 1 "10uF" H 8165 1855 50  0000 L CNN
+F 2 "Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm" H 8088 1750 50  0001 C CNN
+F 3 "~" H 8050 1900 50  0001 C CNN
+	1    8050 1900
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+5F #PWR036
+U 1 1 61FD7E79
+P 8050 1550
+F 0 "#PWR036" H 8050 1400 50  0001 C CNN
+F 1 "+5F" H 8065 1723 50  0000 C CNN
+F 2 "" H 8050 1550 50  0001 C CNN
+F 3 "" H 8050 1550 50  0001 C CNN
+	1    8050 1550
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	8050 1750 8050 1550
+Wire Wire Line
+	8050 2550 8050 2450
+Connection ~ 8050 2550
+Wire Wire Line
+	8050 2550 8200 2550
+Wire Wire Line
+	8050 2150 8050 2050
+Text Notes 5950 1400 0    50   ~ 0
+Power on ~RESET~ approx. 18 msec for 10 uF C21.
+Wire Wire Line
+	7350 3850 8000 3850
+Wire Wire Line
+	4000 3950 4000 4900
+Wire Wire Line
+	4000 3950 6650 3950
+Wire Wire Line
+	6650 3950 6650 4000
+Wire Wire Line
+	7050 4250 6950 4250
+Wire Wire Line
+	7350 4750 7550 4750
+Wire Wire Line
+	8000 4750 7850 4750
+Wire Wire Line
+	6950 5550 6850 5550
+Wire Wire Line
+	6850 5550 6850 5850
+$Comp
+L power:GND #PWR033
+U 1 1 62047B17
+P 6850 5850
+F 0 "#PWR033" H 6850 5600 50  0001 C CNN
+F 1 "GND" H 6855 5677 50  0000 C CNN
+F 2 "" H 6850 5850 50  0001 C CNN
+F 3 "" H 6850 5850 50  0001 C CNN
+	1    6850 5850
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	6950 4250 6950 5200
+Wire Wire Line
+	6950 5200 7250 5200
+Wire Wire Line
+	7250 5200 7250 5250
+Connection ~ 6950 4250
+Wire Wire Line
+	6950 4250 6800 4250
+Wire Wire Line
+	8000 5550 7550 5550
+Text Notes 6200 4050 0    50   ~ 0
+Mechanical
+Text Notes 6400 4500 0    50   ~ 0
+Soft
+Wire Wire Line
+	2700 4900 3350 4900
 $EndSCHEMATC