diff --git a/RC6502 PSG/RC6502 PSG-cache.lib b/RC6502 PSG/RC6502 PSG-cache.lib
new file mode 100644
index 0000000..263698c
--- /dev/null
+++ b/RC6502 PSG/RC6502 PSG-cache.lib	
@@ -0,0 +1,500 @@
+EESchema-LIBRARY Version 2.3
+#encoding utf-8
+#
+# 74LS138
+#
+DEF 74LS138 U 0 40 Y Y 1 F N
+F0 "U" 100 500 50 H V C CNN
+F1 "74LS138" 150 -549 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+S -300 450 300 -450 0 1 0 N
+X A0 1 -600 350 300 R 50 50 1 1 I
+X A1 2 -600 250 300 R 50 50 1 1 I
+X A2 3 -600 150 300 R 50 50 1 1 I
+X E1 4 -600 -350 300 R 50 50 1 1 I L
+X E2 5 -600 -250 300 R 50 50 1 1 I L
+X E3 6 -600 -150 300 R 50 50 1 1 I
+X O7 7 600 -350 300 L 50 50 1 1 O V
+X GND 8 0 -450 0 U 50 50 1 1 W N
+X O6 9 600 -250 300 L 50 50 1 1 O V
+X O5 10 600 -150 300 L 50 50 1 1 O V
+X O4 11 600 -50 300 L 50 50 1 1 O V
+X O3 12 600 50 300 L 50 50 1 1 O V
+X O2 13 600 150 300 L 50 50 1 1 O V
+X O1 14 600 250 300 L 50 50 1 1 O V
+X O0 15 600 350 300 L 50 50 1 1 O V
+X VCC 16 0 450 0 D 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# 74LS373
+#
+DEF 74LS373 U 0 40 Y Y 1 F N
+F0 "U" 0 0 50 H V C CNN
+F1 "74LS373" 50 -350 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+X GND 10 -300 -550 0 U 50 50 0 0 W N
+X VCC 20 -250 550 0 U 50 50 0 0 W N
+S -400 550 400 -550 0 1 0 N
+X OE 1 -700 -500 300 R 50 50 1 1 I I
+X O0 2 700 500 300 L 50 50 1 1 T
+X D0 3 -700 500 300 R 50 50 1 1 I
+X D1 4 -700 400 300 R 50 50 1 1 I
+X O1 5 700 400 300 L 50 50 1 1 T
+X O2 6 700 300 300 L 50 50 1 1 T
+X D2 7 -700 300 300 R 50 50 1 1 I
+X D3 8 -700 200 300 R 50 50 1 1 I
+X O3 9 700 200 300 L 50 50 1 1 T
+X LE 11 -700 -400 300 R 50 50 1 1 I
+X O4 12 700 100 300 L 50 50 1 1 T
+X D4 13 -700 100 300 R 50 50 1 1 I
+X D5 14 -700 0 300 R 50 50 1 1 I
+X O5 15 700 0 300 L 50 50 1 1 T
+X O6 16 700 -100 300 L 50 50 1 1 T
+X D6 17 -700 -100 300 R 50 50 1 1 I
+X D7 18 -700 -200 300 R 50 50 1 1 I
+X O7 19 700 -200 300 L 50 50 1 1 T
+ENDDRAW
+ENDDEF
+#
+# Audio-Jack-3
+#
+DEF Audio-Jack-3 J 0 40 Y Y 1 F N
+F0 "J" -50 175 50 H V C CNN
+F1 "Audio-Jack-3" 100 -70 50 H V C CNN
+F2 "" 250 100 50 H I C CNN
+F3 "" 250 100 50 H I C CNN
+DRAW
+T 0 -25 50 30 0 0 0 1 Normal 0 C C
+T 0 -100 50 30 0 0 0 2 Normal 0 C C
+S -185 125 100 -25 0 1 10 f
+S -175 0 -205 100 0 1 0 F
+P 4 0 1 10 -50 0 -25 25 0 0 100 0 N
+P 4 0 1 10 100 100 -75 100 -100 75 -125 100 N
+X ~ 1 200 0 100 L 50 50 1 1 P
+X ~ 2 200 100 100 L 50 50 1 1 P
+X ~ 3 -200 -100 100 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# C
+#
+DEF C C 0 10 N Y 1 F N
+F0 "C" 25 100 50 H V L CNN
+F1 "C" 25 -100 50 H V L CNN
+F2 "" 38 -150 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ C_*
+$ENDFPLIST
+DRAW
+P 2 0 1 20 -80 -30 80 -30 N
+P 2 0 1 20 -80 30 80 30 N
+X ~ 1 0 150 110 D 50 50 1 1 P
+X ~ 2 0 -150 110 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# CP
+#
+DEF CP C 0 10 N Y 1 F N
+F0 "C" 25 100 50 H V L CNN
+F1 "CP" 25 -100 50 H V L CNN
+F2 "" 38 -150 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ CP_*
+$ENDFPLIST
+DRAW
+S -90 20 -90 40 0 1 0 N
+S -90 20 90 20 0 1 0 N
+S 90 -20 -90 -40 0 1 0 F
+S 90 40 -90 40 0 1 0 N
+S 90 40 90 20 0 1 0 N
+P 2 0 1 0 -70 90 -30 90 N
+P 2 0 1 0 -50 110 -50 70 N
+X ~ 1 0 150 110 D 50 50 1 1 P
+X ~ 2 0 -150 110 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Conn_02x08_Odd_Even
+#
+DEF Conn_02x08_Odd_Even J 0 40 Y N 1 F N
+F0 "J" 50 400 50 H V C CNN
+F1 "Conn_02x08_Odd_Even" 50 -500 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*2x??x*mm*
+ Connector*:*2x???Pitch*
+ Pin_Header_Straight_2X*
+ Pin_Header_Angled_2X*
+ Socket_Strip_Straight_2X*
+ Socket_Strip_Angled_2X*
+$ENDFPLIST
+DRAW
+S -50 -395 0 -405 1 1 6 N
+S -50 -295 0 -305 1 1 6 N
+S -50 -195 0 -205 1 1 6 N
+S -50 -95 0 -105 1 1 6 N
+S -50 5 0 -5 1 1 6 N
+S -50 105 0 95 1 1 6 N
+S -50 205 0 195 1 1 6 N
+S -50 305 0 295 1 1 6 N
+S -50 350 150 -450 1 1 10 f
+S 150 -395 100 -405 1 1 6 N
+S 150 -295 100 -305 1 1 6 N
+S 150 -195 100 -205 1 1 6 N
+S 150 -95 100 -105 1 1 6 N
+S 150 5 100 -5 1 1 6 N
+S 150 105 100 95 1 1 6 N
+S 150 205 100 195 1 1 6 N
+S 150 305 100 295 1 1 6 N
+X Pin_1 1 -200 300 150 R 50 50 1 1 P
+X Pin_2 2 300 300 150 L 50 50 1 1 P
+X Pin_3 3 -200 200 150 R 50 50 1 1 P
+X Pin_4 4 300 200 150 L 50 50 1 1 P
+X Pin_5 5 -200 100 150 R 50 50 1 1 P
+X Pin_6 6 300 100 150 L 50 50 1 1 P
+X Pin_7 7 -200 0 150 R 50 50 1 1 P
+X Pin_8 8 300 0 150 L 50 50 1 1 P
+X Pin_9 9 -200 -100 150 R 50 50 1 1 P
+X Pin_10 10 300 -100 150 L 50 50 1 1 P
+X Pin_11 11 -200 -200 150 R 50 50 1 1 P
+X Pin_12 12 300 -200 150 L 50 50 1 1 P
+X Pin_13 13 -200 -300 150 R 50 50 1 1 P
+X Pin_14 14 300 -300 150 L 50 50 1 1 P
+X Pin_15 15 -200 -400 150 R 50 50 1 1 P
+X Pin_16 16 300 -400 150 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# DGOF5S3
+#
+DEF DGOF5S3 X 0 10 Y Y 1 F N
+F0 "X" -200 250 50 H V L CNN
+F1 "DGOF5S3" 50 -250 50 H V L CNN
+F2 "Oscillators:Oscillator_DIP-14" 450 -350 50 H I C CNN
+F3 "" -100 0 50 H I C CNN
+ALIAS ACO-xxxMHz GTXO-S14T TCXO-14
+$FPLIST
+ Oscillator*DIP*14*
+$ENDFPLIST
+DRAW
+S -200 200 200 -200 0 1 10 f
+P 9 0 1 0 -100 -25 -75 -25 -75 25 -50 25 -50 -25 -25 -25 -25 25 0 25 0 -25 N
+X NC 1 -300 0 100 R 50 50 1 1 N N
+X GND 7 0 -300 100 U 50 50 1 1 W
+X OUT 8 300 0 100 L 50 50 1 1 O
+X Vcc 14 0 300 100 D 50 50 1 1 W
+ENDDRAW
+ENDDEF
+#
+# GND
+#
+DEF GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -250 50 H I C CNN
+F1 "GND" 0 -150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+P 6 0 1 0 0 0 0 -50 50 -50 0 -100 -50 -50 0 -50 N
+X GND 1 0 0 0 D 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# Jumper_NC_Dual
+#
+DEF Jumper_NC_Dual JP 0 30 Y N 1 F N
+F0 "JP" 50 -100 50 H V L CNN
+F1 "Jumper_NC_Dual" 0 100 50 H V C BNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+A -60 10 64 386 1413 0 1 0 N -10 50 -110 50
+A 60 10 64 386 1413 0 1 0 N 110 50 10 50
+C -120 0 35 0 1 0 N
+C 0 0 36 0 1 0 N
+C 120 0 35 0 1 0 N
+X 1 1 -250 0 95 R 50 50 0 1 P
+X 2 2 0 -100 60 U 50 50 0 1 P
+X 3 3 250 0 95 L 50 50 0 1 P
+ENDDRAW
+ENDDEF
+#
+# Jumper_NO_Small
+#
+DEF Jumper_NO_Small JP 0 30 N N 1 F N
+F0 "JP" 0 80 50 H V C CNN
+F1 "Jumper_NO_Small" 10 -60 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+C -40 0 20 0 1 0 N
+C 40 0 20 0 1 0 N
+X 1 1 -100 0 40 R 50 50 0 1 P
+X 2 2 100 0 40 L 50 50 0 1 P
+ENDDRAW
+ENDDEF
+#
+# LM386
+#
+DEF LM386 U 0 10 Y Y 1 F N
+F0 "U" 50 300 50 H V L CNN
+F1 "LM386" 50 200 50 H V L CNN
+F2 "" 100 100 50 H I C CNN
+F3 "" 200 200 50 H I C CNN
+$FPLIST
+ SOIC*3.9x4.9mm*Pitch1.27mm*
+ DIP*W7.62mm*
+ MSSOP*Pitch0.65mm*
+$ENDFPLIST
+DRAW
+P 2 0 1 6 0 -150 0 -100 N
+P 2 0 1 6 0 150 0 100 N
+P 3 0 1 6 100 -150 100 -125 50 -75 N
+P 4 0 1 10 200 0 -200 200 -200 -200 200 0 f
+X ~ 1 0 -300 150 U 50 50 1 1 I
+X - 2 -300 -100 100 R 50 50 1 1 I
+X + 3 -300 100 100 R 50 50 1 1 I
+X Gnd 4 -100 -300 150 U 50 50 1 1 W
+X ~ 5 300 0 100 L 50 50 1 1 O
+X V+ 6 -100 300 150 D 50 50 1 1 W
+X ~ 7 0 300 150 D 50 50 1 1 I
+X ~ 8 100 -300 150 U 50 50 1 1 I
+ENDDRAW
+ENDDEF
+#
+# POT
+#
+DEF POT RV 0 40 N N 1 F N
+F0 "RV" -175 0 50 V V C CNN
+F1 "POT" -100 0 50 V V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Potentiometer*
+$ENDFPLIST
+DRAW
+S 40 100 -40 -100 0 1 10 N
+P 2 0 1 0 100 0 60 0 N
+P 3 0 1 0 45 0 90 20 90 -20 F
+X 1 1 0 150 50 D 50 50 1 1 P
+X 2 2 150 0 50 L 50 50 1 1 P
+X 3 3 0 -150 50 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# R
+#
+DEF R R 0 0 N Y 1 F N
+F0 "R" 80 0 50 V V C CNN
+F1 "R" 0 0 50 V V C CNN
+F2 "" -70 0 50 V I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ R_*
+ R_*
+$ENDFPLIST
+DRAW
+S -40 -100 40 100 0 1 10 N
+X ~ 1 0 150 50 D 50 50 1 1 P
+X ~ 2 0 -150 50 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# RC6502_Backplane
+#
+DEF RC6502_Backplane J 0 40 Y N 1 F N
+F0 "J" 0 2000 50 H V C CNN
+F1 "RC6502_Backplane" 450 -50 50 V V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Pin_Header_Straight_1X*
+ Pin_Header_Angled_1X*
+ Socket_Strip_Straight_1X*
+ Socket_Strip_Angled_1X*
+$ENDFPLIST
+DRAW
+T 0 100 400 60 0 0 0 A0 Normal 0 L C
+T 0 100 500 60 0 0 0 A1 Normal 0 L C
+T 0 100 1400 60 0 0 0 A10 Normal 0 L C
+T 0 100 1500 60 0 0 0 A11 Normal 0 L C
+T 0 100 1600 60 0 0 0 A12 Normal 0 L C
+T 0 100 1700 60 0 0 0 A13 Normal 0 L C
+T 0 100 1800 60 0 0 0 A14 Normal 0 L C
+T 0 100 1900 60 0 0 0 A15 Normal 0 L C
+T 0 100 600 60 0 0 0 A2 Normal 0 L C
+T 0 100 700 60 0 0 0 A3 Normal 0 L C
+T 0 100 800 60 0 0 0 A4 Normal 0 L C
+T 0 100 900 60 0 0 0 A5 Normal 0 L C
+T 0 100 1000 60 0 0 0 A6 Normal 0 L C
+T 0 100 1100 60 0 0 0 A7 Normal 0 L C
+T 0 100 1200 60 0 0 0 A8 Normal 0 L C
+T 0 100 1300 60 0 0 0 A9 Normal 0 L C
+T 0 100 -700 60 0 0 0 D0 Normal 0 L C
+T 0 100 -800 60 0 0 0 D1 Normal 0 L C
+T 0 100 -900 60 0 0 0 D2 Normal 0 L C
+T 0 100 -1000 60 0 0 0 D3 Normal 0 L C
+T 0 100 -1100 60 0 0 0 D4 Normal 0 L C
+T 0 100 -1200 60 0 0 0 D5 Normal 0 L C
+T 0 100 -1300 60 0 0 0 D6 Normal 0 L C
+T 0 100 -1400 60 0 0 0 D7 Normal 0 L C
+T 0 100 300 60 0 0 0 GND Normal 0 L C
+T 0 100 -200 60 0 0 0 IRQ Normal 0 L C
+T 0 100 -1700 60 0 0 0 NMI Normal 0 L C
+T 0 100 -100 60 0 0 0 PHI0 Normal 0 L C
+T 0 100 100 60 0 0 0 PHI2 Normal 0 L C
+T 0 100 -500 60 0 0 0 RDY Normal 0 L C
+T 0 100 0 60 0 0 0 RESET Normal 0 L C
+T 0 100 -400 60 0 0 0 RW Normal 0 L C
+T 0 100 -1600 60 0 0 0 RX Normal 0 L C
+T 0 100 -600 60 0 0 0 SYNC Normal 0 L C
+T 0 100 -1500 60 0 0 0 TX Normal 0 L C
+T 0 100 200 60 0 0 0 VCC Normal 0 L C
+S -50 -1950 50 1950 0 1 0 N
+S -50 -1895 10 -1905 0 1 0 N
+S -50 -1795 10 -1805 0 1 0 N
+S -50 -1695 10 -1705 0 1 0 N
+S -50 -1595 10 -1605 0 1 0 N
+S -50 -1495 10 -1505 0 1 0 N
+S -50 -1395 10 -1405 0 1 0 N
+S -50 -1295 10 -1305 0 1 0 N
+S -50 -1195 10 -1205 0 1 0 N
+S -50 -1095 10 -1105 0 1 0 N
+S -50 -995 10 -1005 0 1 0 N
+S -50 -895 10 -905 0 1 0 N
+S -50 -795 10 -805 0 1 0 N
+S -50 -695 10 -705 0 1 0 N
+S -50 -595 10 -605 0 1 0 N
+S -50 -495 10 -505 0 1 0 N
+S -50 -395 10 -405 0 1 0 N
+S -50 -295 10 -305 0 1 0 N
+S -50 -195 10 -205 0 1 0 N
+S -50 -95 10 -105 0 1 0 N
+S -50 5 10 -5 0 1 0 N
+S -50 105 10 95 0 1 0 N
+S -50 205 10 195 0 1 0 N
+S -50 305 10 295 0 1 0 N
+S -50 405 10 395 0 1 0 N
+S -50 505 10 495 0 1 0 N
+S -50 605 10 595 0 1 0 N
+S -50 705 10 695 0 1 0 N
+S -50 805 10 795 0 1 0 N
+S -50 905 10 895 0 1 0 N
+S -50 1005 10 995 0 1 0 N
+S -50 1105 10 1095 0 1 0 N
+S -50 1205 10 1195 0 1 0 N
+S -50 1305 10 1295 0 1 0 N
+S -50 1405 10 1395 0 1 0 N
+S -50 1505 10 1495 0 1 0 N
+S -50 1605 10 1595 0 1 0 N
+S -50 1705 10 1695 0 1 0 N
+S -50 1805 10 1795 0 1 0 N
+S -50 1905 10 1895 0 1 0 N
+X A15 1 -200 1900 150 R 50 50 1 1 B
+X A14 2 -200 1800 150 R 50 50 1 1 B
+X A13 3 -200 1700 150 R 50 50 1 1 B
+X A12 4 -200 1600 150 R 50 50 1 1 B
+X A11 5 -200 1500 150 R 50 50 1 1 B
+X A10 6 -200 1400 150 R 50 50 1 1 B
+X A9 7 -200 1300 150 R 50 50 1 1 B
+X A8 8 -200 1200 150 R 50 50 1 1 B
+X A7 9 -200 1100 150 R 50 50 1 1 B
+X A6 10 -200 1000 150 R 50 50 1 1 B
+X RESET 20 -200 0 150 R 50 50 1 1 B
+X D3 30 -200 -1000 150 R 50 50 1 1 B
+X A5 11 -200 900 150 R 50 50 1 1 B
+X PHI0 21 -200 -100 150 R 50 50 1 1 B C
+X D4 31 -200 -1100 150 R 50 50 1 1 B
+X A4 12 -200 800 150 R 50 50 1 1 B
+X IRQ 22 -200 -200 150 R 50 50 1 1 B
+X D5 32 -200 -1200 150 R 50 50 1 1 B
+X A3 13 -200 700 150 R 50 50 1 1 B
+X P23 23 -200 -300 150 R 50 50 1 1 N
+X D6 33 -200 -1300 150 R 50 50 1 1 B
+X A2 14 -200 600 150 R 50 50 1 1 B
+X RW 24 -200 -400 150 R 50 50 1 1 B
+X D7 34 -200 -1400 150 R 50 50 1 1 B
+X A1 15 -200 500 150 R 50 50 1 1 B
+X READY 25 -200 -500 150 R 50 50 1 1 B
+X TX 35 -200 -1500 150 R 50 50 1 1 B
+X A0 16 -200 400 150 R 50 50 1 1 B
+X SYNC 26 -200 -600 150 R 50 50 1 1 B
+X RX 36 -200 -1600 150 R 50 50 1 1 B
+X P17 17 -200 300 150 R 50 50 1 1 w
+X D0 27 -200 -700 150 R 50 50 1 1 B
+X NMI 37 -200 -1700 150 R 50 50 1 1 B
+X P18 18 -200 200 150 R 50 50 1 1 w
+X D1 28 -200 -800 150 R 50 50 1 1 B
+X P38 38 -200 -1800 150 R 50 50 1 1 N
+X PHI2 19 -200 100 150 R 50 50 1 1 B C
+X D2 29 -200 -900 150 R 50 50 1 1 B
+X P39 39 -200 -1900 150 R 50 50 1 1 N
+ENDDRAW
+ENDDEF
+#
+# SN76489AN
+#
+DEF SN76489AN U 0 40 Y Y 1 F N
+F0 "U" 0 -500 50 H V C CNN
+F1 "SN76489AN" 0 0 50 V V C CNN
+F2 "MODULE" 0 650 50 H I C CNN
+F3 "DOCUMENTATION" 0 -650 50 H I C CNN
+DRAW
+S -450 -550 450 550 1 0 0 N
+X ~WE 5 -750 -50 300 R 50 50 1 0 I
+X D2 1 -750 350 300 R 50 50 1 1 I
+X D1 2 -750 250 300 R 50 50 1 1 I
+X D0 3 -750 150 300 R 50 50 1 1 I
+X READY 4 -750 50 300 R 50 50 1 1 O
+X ~CE 6 -750 -150 300 R 50 50 1 1 I
+X SND 7 -750 -250 300 R 50 50 1 1 O
+X GND 8 -750 -350 300 R 50 50 1 1 W
+X NC 9 750 350 300 L 50 50 1 1 I
+X D7 10 750 250 300 L 50 50 1 1 I
+X D6 11 750 150 300 L 50 50 1 1 I
+X D5 12 750 50 300 L 50 50 1 1 I
+X D4 13 750 -50 300 L 50 50 1 1 I
+X CLOCK 14 750 -150 300 L 50 50 1 1 I
+X D3 15 750 -250 300 L 50 50 1 1 I
+X VCC 16 750 -350 300 L 50 50 1 1 W
+ENDDRAW
+ENDDEF
+#
+# Speaker
+#
+DEF Speaker LS 0 0 Y N 1 F N
+F0 "LS" 50 225 50 H V R CNN
+F1 "Speaker" 50 150 50 H V R CNN
+F2 "" 0 -200 50 H I C CNN
+F3 "" -10 -50 50 H I C CNN
+DRAW
+S -100 50 40 -150 0 0 10 N
+P 4 0 0 10 40 50 140 150 140 -250 40 -150 N
+X 1 1 -200 0 100 R 50 50 1 1 I
+X 2 2 -200 -100 100 R 50 50 1 1 I
+ENDDRAW
+ENDDEF
+#
+# VCC
+#
+DEF VCC #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -150 50 H I C CNN
+F1 "VCC" 0 150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+C 0 75 25 0 1 0 N
+P 2 0 1 0 0 0 0 50 N
+X VCC 1 0 0 0 U 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+#End Library
diff --git a/RC6502 PSG/RC6502 PSG.kicad_pcb b/RC6502 PSG/RC6502 PSG.kicad_pcb
new file mode 100644
index 0000000..02c8ecb
--- /dev/null
+++ b/RC6502 PSG/RC6502 PSG.kicad_pcb	
@@ -0,0 +1 @@
+(kicad_pcb (version 4) (host kicad "dummy file") )
diff --git a/RC6502 PSG/RC6502 PSG.net b/RC6502 PSG/RC6502 PSG.net
new file mode 100644
index 0000000..42d26de
--- /dev/null
+++ b/RC6502 PSG/RC6502 PSG.net	
@@ -0,0 +1,720 @@
+(export (version D)
+  (design
+    (source "D:/ownCloud/Documents/Projects/RC6502/RC6502 PSG/RC6502 PSG.sch")
+    (date "26/12/2018 14:40:03")
+    (tool "Eeschema 4.0.7")
+    (sheet (number 1) (name /) (tstamps /)
+      (title_block
+        (title)
+        (company)
+        (rev)
+        (date)
+        (source "RC6502 PSG.sch")
+        (comment (number 1) (value ""))
+        (comment (number 2) (value ""))
+        (comment (number 3) (value ""))
+        (comment (number 4) (value "")))))
+  (components
+    (comp (ref J4)
+      (value RC6502_Backplane)
+      (footprint Pin_Headers:Pin_Header_Angled_1x39_Pitch2.54mm)
+      (libsource (lib rc6502_backplane) (part RC6502_Backplane))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C225E9D))
+    (comp (ref U4)
+      (value 74LS138)
+      (footprint Housings_DIP:DIP-16_W7.62mm)
+      (libsource (lib 74xx) (part 74LS138))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C225F79))
+    (comp (ref U3)
+      (value 74LS138)
+      (footprint Housings_DIP:DIP-16_W7.62mm)
+      (libsource (lib 74xx) (part 74LS138))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C225FA2))
+    (comp (ref J3)
+      (value Base)
+      (footprint Pin_Headers:Pin_Header_Straight_2x08_Pitch2.54mm)
+      (libsource (lib conn) (part Conn_02x08_Odd_Even))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C226011))
+    (comp (ref J2)
+      (value Port)
+      (footprint Pin_Headers:Pin_Header_Straight_2x08_Pitch2.54mm)
+      (libsource (lib conn) (part Conn_02x08_Odd_Even))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C22CCC7))
+    (comp (ref U5)
+      (value SN76489AN)
+      (footprint Housings_DIP:DIP-16_W7.62mm_Socket)
+      (datasheet DOCUMENTATION)
+      (libsource (lib SN76489AN) (part SN76489AN))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C22D784))
+    (comp (ref X1)
+      (value TCXO-14)
+      (footprint Oscillators:Oscillator_DIP-14)
+      (libsource (lib Oscillators) (part TCXO-14))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C22E816))
+    (comp (ref U1)
+      (value LM386)
+      (footprint Housings_DIP:DIP-8_W7.62mm_Socket)
+      (libsource (lib linear) (part LM386))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C22EC62))
+    (comp (ref C2)
+      (value 470nF)
+      (footprint Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm)
+      (libsource (lib device) (part C))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C22ECA0))
+    (comp (ref C1)
+      (value 100nF)
+      (footprint Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm)
+      (libsource (lib device) (part C))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C22F3EF))
+    (comp (ref C4)
+      (value 100nF)
+      (footprint Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm)
+      (libsource (lib device) (part C))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C22F577))
+    (comp (ref C3)
+      (value 100uF)
+      (footprint Capacitors_THT:CP_Radial_D4.0mm_P2.00mm)
+      (libsource (lib device) (part CP))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C22F68D))
+    (comp (ref C5)
+      (value 10uF)
+      (footprint Capacitors_THT:CP_Radial_Tantal_D5.0mm_P5.00mm)
+      (libsource (lib device) (part CP))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C22FDDA))
+    (comp (ref RV2)
+      (value 10K)
+      (footprint Potentiometers:Potentiometer_Trimmer_Bourns_3296W)
+      (libsource (lib device) (part POT))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C22FF68))
+    (comp (ref C6)
+      (value 10uF)
+      (footprint Capacitors_THT:CP_Radial_Tantal_D5.0mm_P5.00mm)
+      (libsource (lib device) (part CP))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C2305EC))
+    (comp (ref R1)
+      (value 10k)
+      (footprint Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal)
+      (libsource (lib device) (part R))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C2306BB))
+    (comp (ref RV1)
+      (value 10K)
+      (footprint Potentiometers:Potentiometer_Trimmer_Bourns_3296W)
+      (libsource (lib device) (part POT))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C230B68))
+    (comp (ref C7)
+      (value 100nF)
+      (footprint Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm)
+      (libsource (lib device) (part C))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C231784))
+    (comp (ref R3)
+      (value 10)
+      (footprint Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal)
+      (libsource (lib device) (part R))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C2318E6))
+    (comp (ref C8)
+      (value 1000uF)
+      (footprint Capacitors_THT:CP_Radial_D8.0mm_P3.80mm)
+      (libsource (lib device) (part CP))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C231F73))
+    (comp (ref J1)
+      (value Out)
+      (footprint Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm)
+      (libsource (lib conn) (part Audio-Jack-3))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C233E8D))
+    (comp (ref JP1)
+      (value CLK_SEL)
+      (footprint Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm)
+      (libsource (lib device) (part Jumper_NC_Dual))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C235BBC))
+    (comp (ref R2)
+      (value 4k7)
+      (footprint Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal)
+      (libsource (lib device) (part R))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C2374DE))
+    (comp (ref U2)
+      (value 74LS373)
+      (footprint Housings_DIP:DIP-20_W7.62mm)
+      (libsource (lib 74xx) (part 74LS373))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C237A24))
+    (comp (ref LS1)
+      (value Speaker)
+      (footprint Buzzers_Beepers:Buzzer_12x9.5RM7.6)
+      (libsource (lib device) (part Speaker))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C23AA18))
+    (comp (ref JP2)
+      (value SPKR_EN)
+      (footprint Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm)
+      (libsource (lib device) (part Jumper_NO_Small))
+      (sheetpath (names /) (tstamps /))
+      (tstamp 5C23C542)))
+  (libparts
+    (libpart (lib 74xx) (part 74LS138)
+      (description "Decoder 3 to 8 (active low outputs)")
+      (fields
+        (field (name Reference) U)
+        (field (name Value) 74LS138))
+      (pins
+        (pin (num 1) (name A0) (type input))
+        (pin (num 2) (name A1) (type input))
+        (pin (num 3) (name A2) (type input))
+        (pin (num 4) (name E1) (type input))
+        (pin (num 5) (name E2) (type input))
+        (pin (num 6) (name E3) (type input))
+        (pin (num 7) (name O7) (type output))
+        (pin (num 8) (name GND) (type power_in))
+        (pin (num 9) (name O6) (type output))
+        (pin (num 10) (name O5) (type output))
+        (pin (num 11) (name O4) (type output))
+        (pin (num 12) (name O3) (type output))
+        (pin (num 13) (name O2) (type output))
+        (pin (num 14) (name O1) (type output))
+        (pin (num 15) (name O0) (type output))
+        (pin (num 16) (name VCC) (type power_in))))
+    (libpart (lib 74xx) (part 74LS373)
+      (description "8 bits Latch, 3 state Out")
+      (fields
+        (field (name Reference) U)
+        (field (name Value) 74LS373))
+      (pins
+        (pin (num 1) (name OE) (type input))
+        (pin (num 2) (name O0) (type 3state))
+        (pin (num 3) (name D0) (type input))
+        (pin (num 4) (name D1) (type input))
+        (pin (num 5) (name O1) (type 3state))
+        (pin (num 6) (name O2) (type 3state))
+        (pin (num 7) (name D2) (type input))
+        (pin (num 8) (name D3) (type input))
+        (pin (num 9) (name O3) (type 3state))
+        (pin (num 10) (name GND) (type power_in))
+        (pin (num 11) (name LE) (type input))
+        (pin (num 12) (name O4) (type 3state))
+        (pin (num 13) (name D4) (type input))
+        (pin (num 14) (name D5) (type input))
+        (pin (num 15) (name O5) (type 3state))
+        (pin (num 16) (name O6) (type 3state))
+        (pin (num 17) (name D6) (type input))
+        (pin (num 18) (name D7) (type input))
+        (pin (num 19) (name O7) (type 3state))
+        (pin (num 20) (name VCC) (type power_in))))
+    (libpart (lib conn) (part Audio-Jack-3)
+      (description "3-pin audio jack receptable (stereo/TRS connector)")
+      (docs ~)
+      (fields
+        (field (name Reference) J)
+        (field (name Value) Audio-Jack-3))
+      (pins
+        (pin (num 1) (name ~) (type passive))
+        (pin (num 2) (name ~) (type passive))
+        (pin (num 3) (name ~) (type passive))))
+    (libpart (lib device) (part C)
+      (description "Unpolarized capacitor")
+      (footprints
+        (fp C_*))
+      (fields
+        (field (name Reference) C)
+        (field (name Value) C))
+      (pins
+        (pin (num 1) (name ~) (type passive))
+        (pin (num 2) (name ~) (type passive))))
+    (libpart (lib device) (part CP)
+      (description "Polarised capacitor")
+      (footprints
+        (fp CP_*))
+      (fields
+        (field (name Reference) C)
+        (field (name Value) CP))
+      (pins
+        (pin (num 1) (name ~) (type passive))
+        (pin (num 2) (name ~) (type passive))))
+    (libpart (lib conn) (part Conn_02x08_Odd_Even)
+      (description "Generic connector, double row, 02x08, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers)")
+      (docs ~)
+      (footprints
+        (fp Connector*:*2x??x*mm*)
+        (fp Connector*:*2x???Pitch*)
+        (fp Pin_Header_Straight_2X*)
+        (fp Pin_Header_Angled_2X*)
+        (fp Socket_Strip_Straight_2X*)
+        (fp Socket_Strip_Angled_2X*))
+      (fields
+        (field (name Reference) J)
+        (field (name Value) Conn_02x08_Odd_Even))
+      (pins
+        (pin (num 1) (name Pin_1) (type passive))
+        (pin (num 2) (name Pin_2) (type passive))
+        (pin (num 3) (name Pin_3) (type passive))
+        (pin (num 4) (name Pin_4) (type passive))
+        (pin (num 5) (name Pin_5) (type passive))
+        (pin (num 6) (name Pin_6) (type passive))
+        (pin (num 7) (name Pin_7) (type passive))
+        (pin (num 8) (name Pin_8) (type passive))
+        (pin (num 9) (name Pin_9) (type passive))
+        (pin (num 10) (name Pin_10) (type passive))
+        (pin (num 11) (name Pin_11) (type passive))
+        (pin (num 12) (name Pin_12) (type passive))
+        (pin (num 13) (name Pin_13) (type passive))
+        (pin (num 14) (name Pin_14) (type passive))
+        (pin (num 15) (name Pin_15) (type passive))
+        (pin (num 16) (name Pin_16) (type passive))))
+    (libpart (lib Oscillators) (part DGOF5S3)
+      (aliases
+        (alias ACO-xxxMHz)
+        (alias GTXO-S14T)
+        (alias TCXO-14))
+      (description "HCMOS Crystal Clock Oscillator, DIP14-style metal package")
+      (docs http://www.conwin.com/datasheets/cx/cx030.pdf)
+      (footprints
+        (fp Oscillator*DIP*14*))
+      (fields
+        (field (name Reference) X)
+        (field (name Value) DGOF5S3)
+        (field (name Footprint) Oscillators:Oscillator_DIP-14))
+      (pins
+        (pin (num 1) (name NC) (type NotConnected))
+        (pin (num 7) (name GND) (type power_in))
+        (pin (num 8) (name OUT) (type output))
+        (pin (num 14) (name Vcc) (type power_in))))
+    (libpart (lib device) (part Jumper_NC_Dual)
+      (description "Dual Jumper, normally closed")
+      (fields
+        (field (name Reference) JP)
+        (field (name Value) Jumper_NC_Dual))
+      (pins
+        (pin (num 1) (name 1) (type passive))
+        (pin (num 2) (name 2) (type passive))
+        (pin (num 3) (name 3) (type passive))))
+    (libpart (lib device) (part Jumper_NO_Small)
+      (description "Jumper, normally open")
+      (fields
+        (field (name Reference) JP)
+        (field (name Value) Jumper_NO_Small))
+      (pins
+        (pin (num 1) (name 1) (type passive))
+        (pin (num 2) (name 2) (type passive))))
+    (libpart (lib linear) (part LM386)
+      (description "Low Voltage Audio Power Amplifier, DIP-8/SOIC-8/SSOP-8")
+      (docs http://www.ti.com/lit/ds/symlink/lm386.pdf)
+      (footprints
+        (fp SOIC*3.9x4.9mm*Pitch1.27mm*)
+        (fp DIP*W7.62mm*)
+        (fp MSSOP*Pitch0.65mm*))
+      (fields
+        (field (name Reference) U)
+        (field (name Value) LM386))
+      (pins
+        (pin (num 1) (name ~) (type input))
+        (pin (num 2) (name -) (type input))
+        (pin (num 3) (name +) (type input))
+        (pin (num 4) (name Gnd) (type power_in))
+        (pin (num 5) (name ~) (type output))
+        (pin (num 6) (name V+) (type power_in))
+        (pin (num 7) (name ~) (type input))
+        (pin (num 8) (name ~) (type input))))
+    (libpart (lib device) (part POT)
+      (description Potentiometer)
+      (footprints
+        (fp Potentiometer*))
+      (fields
+        (field (name Reference) RV)
+        (field (name Value) POT))
+      (pins
+        (pin (num 1) (name 1) (type passive))
+        (pin (num 2) (name 2) (type passive))
+        (pin (num 3) (name 3) (type passive))))
+    (libpart (lib device) (part R)
+      (description Resistor)
+      (footprints
+        (fp R_*)
+        (fp R_*))
+      (fields
+        (field (name Reference) R)
+        (field (name Value) R))
+      (pins
+        (pin (num 1) (name ~) (type passive))
+        (pin (num 2) (name ~) (type passive))))
+    (libpart (lib rc6502_backplane) (part RC6502_Backplane)
+      (footprints
+        (fp Pin_Header_Straight_1X*)
+        (fp Pin_Header_Angled_1X*)
+        (fp Socket_Strip_Straight_1X*)
+        (fp Socket_Strip_Angled_1X*))
+      (fields
+        (field (name Reference) J)
+        (field (name Value) RC6502_Backplane))
+      (pins
+        (pin (num 1) (name A15) (type BiDi))
+        (pin (num 2) (name A14) (type BiDi))
+        (pin (num 3) (name A13) (type BiDi))
+        (pin (num 4) (name A12) (type BiDi))
+        (pin (num 5) (name A11) (type BiDi))
+        (pin (num 6) (name A10) (type BiDi))
+        (pin (num 7) (name A9) (type BiDi))
+        (pin (num 8) (name A8) (type BiDi))
+        (pin (num 9) (name A7) (type BiDi))
+        (pin (num 10) (name A6) (type BiDi))
+        (pin (num 11) (name A5) (type BiDi))
+        (pin (num 12) (name A4) (type BiDi))
+        (pin (num 13) (name A3) (type BiDi))
+        (pin (num 14) (name A2) (type BiDi))
+        (pin (num 15) (name A1) (type BiDi))
+        (pin (num 16) (name A0) (type BiDi))
+        (pin (num 17) (name P17) (type power_out))
+        (pin (num 18) (name P18) (type power_out))
+        (pin (num 19) (name PHI2) (type BiDi))
+        (pin (num 20) (name RESET) (type BiDi))
+        (pin (num 21) (name PHI0) (type BiDi))
+        (pin (num 22) (name IRQ) (type BiDi))
+        (pin (num 23) (name P23) (type NotConnected))
+        (pin (num 24) (name RW) (type BiDi))
+        (pin (num 25) (name READY) (type BiDi))
+        (pin (num 26) (name SYNC) (type BiDi))
+        (pin (num 27) (name D0) (type BiDi))
+        (pin (num 28) (name D1) (type BiDi))
+        (pin (num 29) (name D2) (type BiDi))
+        (pin (num 30) (name D3) (type BiDi))
+        (pin (num 31) (name D4) (type BiDi))
+        (pin (num 32) (name D5) (type BiDi))
+        (pin (num 33) (name D6) (type BiDi))
+        (pin (num 34) (name D7) (type BiDi))
+        (pin (num 35) (name TX) (type BiDi))
+        (pin (num 36) (name RX) (type BiDi))
+        (pin (num 37) (name NMI) (type BiDi))
+        (pin (num 38) (name P38) (type NotConnected))
+        (pin (num 39) (name P39) (type NotConnected))))
+    (libpart (lib SN76489AN) (part SN76489AN)
+      (fields
+        (field (name Reference) U)
+        (field (name Value) SN76489AN)
+        (field (name Footprint) MODULE)
+        (field (name Datasheet) DOCUMENTATION))
+      (pins
+        (pin (num 1) (name D2) (type input))
+        (pin (num 2) (name D1) (type input))
+        (pin (num 3) (name D0) (type input))
+        (pin (num 4) (name READY) (type output))
+        (pin (num 5) (name ~WE) (type input))
+        (pin (num 6) (name ~CE) (type input))
+        (pin (num 7) (name SND) (type output))
+        (pin (num 8) (name GND) (type power_in))
+        (pin (num 9) (name NC) (type input))
+        (pin (num 10) (name D7) (type input))
+        (pin (num 11) (name D6) (type input))
+        (pin (num 12) (name D5) (type input))
+        (pin (num 13) (name D4) (type input))
+        (pin (num 14) (name CLOCK) (type input))
+        (pin (num 15) (name D3) (type input))
+        (pin (num 16) (name VCC) (type power_in))))
+    (libpart (lib device) (part Speaker)
+      (description "speaker ")
+      (fields
+        (field (name Reference) LS)
+        (field (name Value) Speaker))
+      (pins
+        (pin (num 1) (name 1) (type input))
+        (pin (num 2) (name 2) (type input)))))
+  (libraries
+    (library (logical 74xx)
+      (uri "C:\\Program Files\\KiCad\\share\\kicad\\library\\74xx.lib"))
+    (library (logical device)
+      (uri "C:\\Program Files\\KiCad\\share\\kicad\\library\\device.lib"))
+    (library (logical conn)
+      (uri "C:\\Program Files\\KiCad\\share\\kicad\\library\\conn.lib"))
+    (library (logical rc6502_backplane)
+      (uri D:\ownCloud\Documents\Projects\RC6502\Templates\rc6502_backplane.lib))
+    (library (logical SN76489AN)
+      (uri "D:\\ownCloud\\Documents\\Projects\\RC6502\\RC6502 PSG\\SN76489AN.lib"))
+    (library (logical Oscillators)
+      (uri "C:\\Program Files\\KiCad\\share\\kicad\\library\\Oscillators.lib"))
+    (library (logical linear)
+      (uri "C:\\Program Files\\KiCad\\share\\kicad\\library\\linear.lib")))
+  (nets
+    (net (code 1) (name GND)
+      (node (ref C6) (pin 2))
+      (node (ref C2) (pin 2))
+      (node (ref C2) (pin 1))
+      (node (ref U1) (pin 4))
+      (node (ref U1) (pin 2))
+      (node (ref X1) (pin 7))
+      (node (ref LS1) (pin 2))
+      (node (ref C4) (pin 2))
+      (node (ref C3) (pin 2))
+      (node (ref U2) (pin 18))
+      (node (ref U2) (pin 17))
+      (node (ref U2) (pin 14))
+      (node (ref U2) (pin 13))
+      (node (ref U2) (pin 8))
+      (node (ref U2) (pin 7))
+      (node (ref U2) (pin 4))
+      (node (ref U5) (pin 8))
+      (node (ref U4) (pin 5))
+      (node (ref U4) (pin 4))
+      (node (ref U3) (pin 8))
+      (node (ref RV1) (pin 3))
+      (node (ref U2) (pin 10))
+      (node (ref U4) (pin 8))
+      (node (ref U3) (pin 5))
+      (node (ref J4) (pin 17))
+      (node (ref R3) (pin 2))
+      (node (ref C1) (pin 1))
+      (node (ref J1) (pin 3)))
+    (net (code 2) (name "Net-(C5-Pad1)")
+      (node (ref RV2) (pin 3))
+      (node (ref C5) (pin 1)))
+    (net (code 3) (name "Net-(RV2-Pad1)")
+      (node (ref RV2) (pin 1)))
+    (net (code 4) (name "Net-(C5-Pad2)")
+      (node (ref U1) (pin 8))
+      (node (ref C5) (pin 2)))
+    (net (code 5) (name "Net-(RV2-Pad2)")
+      (node (ref U1) (pin 1))
+      (node (ref RV2) (pin 2)))
+    (net (code 6) (name VCC)
+      (node (ref R2) (pin 1))
+      (node (ref U2) (pin 20))
+      (node (ref C1) (pin 2))
+      (node (ref J4) (pin 18))
+      (node (ref U3) (pin 16))
+      (node (ref U5) (pin 16))
+      (node (ref C3) (pin 1))
+      (node (ref C4) (pin 1))
+      (node (ref U4) (pin 16))
+      (node (ref U1) (pin 6))
+      (node (ref X1) (pin 14)))
+    (net (code 7) (name "Net-(C7-Pad2)")
+      (node (ref C7) (pin 2))
+      (node (ref C8) (pin 1))
+      (node (ref U1) (pin 5)))
+    (net (code 8) (name "Net-(C7-Pad1)")
+      (node (ref C7) (pin 1))
+      (node (ref R3) (pin 1)))
+    (net (code 9) (name "Net-(R1-Pad1)")
+      (node (ref U1) (pin 7))
+      (node (ref R1) (pin 1)))
+    (net (code 10) (name Line)
+      (node (ref RV1) (pin 1))
+      (node (ref U5) (pin 7)))
+    (net (code 11) (name "Net-(RV1-Pad2)")
+      (node (ref U1) (pin 3))
+      (node (ref RV1) (pin 2)))
+    (net (code 12) (name "Net-(C6-Pad1)")
+      (node (ref R1) (pin 2))
+      (node (ref C6) (pin 1)))
+    (net (code 13) (name WRITE)
+      (node (ref J2) (pin 4))
+      (node (ref U5) (pin 5))
+      (node (ref U5) (pin 6))
+      (node (ref J2) (pin 2))
+      (node (ref J2) (pin 8))
+      (node (ref J2) (pin 6)))
+    (net (code 14) (name "Net-(X1-Pad1)")
+      (node (ref X1) (pin 1)))
+    (net (code 15) (name "Net-(U5-Pad9)")
+      (node (ref U5) (pin 9)))
+    (net (code 16) (name /D6)
+      (node (ref U5) (pin 11))
+      (node (ref J4) (pin 33))
+      (node (ref U2) (pin 16)))
+    (net (code 17) (name /D5)
+      (node (ref J4) (pin 32))
+      (node (ref U2) (pin 15))
+      (node (ref U5) (pin 12)))
+    (net (code 18) (name /D4)
+      (node (ref U2) (pin 12))
+      (node (ref U5) (pin 13))
+      (node (ref J4) (pin 31)))
+    (net (code 19) (name /D3)
+      (node (ref J4) (pin 30))
+      (node (ref U2) (pin 9))
+      (node (ref U5) (pin 15)))
+    (net (code 20) (name /D2)
+      (node (ref J4) (pin 29))
+      (node (ref U5) (pin 1))
+      (node (ref U2) (pin 6)))
+    (net (code 21) (name /CLK)
+      (node (ref U5) (pin 14))
+      (node (ref JP1) (pin 2)))
+    (net (code 22) (name "Net-(JP2-Pad2)")
+      (node (ref LS1) (pin 1))
+      (node (ref JP2) (pin 2)))
+    (net (code 23) (name /D1)
+      (node (ref J4) (pin 28))
+      (node (ref U2) (pin 5))
+      (node (ref U5) (pin 2)))
+    (net (code 24) (name /D0)
+      (node (ref U5) (pin 3))
+      (node (ref U2) (pin 2))
+      (node (ref J4) (pin 27)))
+    (net (code 25) (name "Net-(J4-Pad16)")
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+    (net (code 26) (name "Net-(J4-Pad15)")
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+    (net (code 27) (name "Net-(J4-Pad14)")
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+    (net (code 29) (name "Net-(J4-Pad12)")
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+    (net (code 35) (name "Net-(J1-Pad2)")
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+    (net (code 36) (name "Net-(C8-Pad2)")
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+      (node (ref JP2) (pin 1))
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+    (net (code 37) (name /Phi0)
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+      (node (ref X1) (pin 8)))
+    (net (code 39) (name READ)
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+      (node (ref J2) (pin 12))
+      (node (ref J2) (pin 14))
+      (node (ref J2) (pin 16))
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+    (net (code 40) (name READY)
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+    (net (code 56) (name "Net-(J2-Pad7)")
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+    (net (code 59) (name "Net-(J2-Pad13)")
+      (node (ref U3) (pin 9))
+      (node (ref J2) (pin 13)))
+    (net (code 60) (name "Net-(J2-Pad15)")
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+      (node (ref J2) (pin 15)))
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+    (net (code 62) (name /A12)
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+      (node (ref J4) (pin 4)))
+    (net (code 63) (name "Net-(J4-Pad36)")
+      (node (ref J4) (pin 36)))
+    (net (code 64) (name "Net-(J4-Pad26)")
+      (node (ref J4) (pin 26)))
+    (net (code 65) (name "Net-(J4-Pad35)")
+      (node (ref J4) (pin 35)))
+    (net (code 66) (name "Net-(J4-Pad25)")
+      (node (ref J4) (pin 25)))
+    (net (code 67) (name "Net-(J4-Pad23)")
+      (node (ref J4) (pin 23)))
+    (net (code 68) (name "Net-(J4-Pad22)")
+      (node (ref J4) (pin 22)))
+    (net (code 69) (name "Net-(J4-Pad20)")
+      (node (ref J4) (pin 20)))
+    (net (code 70) (name "Net-(J3-Pad10)")
+      (node (ref U3) (pin 4))
+      (node (ref J3) (pin 2))
+      (node (ref J3) (pin 6))
+      (node (ref J3) (pin 8))
+      (node (ref J3) (pin 10))
+      (node (ref J3) (pin 12))
+      (node (ref J3) (pin 14))
+      (node (ref J3) (pin 16))
+      (node (ref J3) (pin 4)))
+    (net (code 71) (name /R/~W)
+      (node (ref U3) (pin 3))
+      (node (ref J4) (pin 24)))
+    (net (code 72) (name /A11)
+      (node (ref J4) (pin 5))
+      (node (ref U3) (pin 2)))
+    (net (code 73) (name "Net-(J4-Pad39)")
+      (node (ref J4) (pin 39)))
+    (net (code 74) (name "Net-(J4-Pad38)")
+      (node (ref J4) (pin 38)))
+    (net (code 75) (name "Net-(J4-Pad37)")
+      (node (ref J4) (pin 37)))
+    (net (code 76) (name /D7)
+      (node (ref U2) (pin 19))
+      (node (ref U5) (pin 10))
+      (node (ref J4) (pin 34)))))
\ No newline at end of file
diff --git a/RC6502 PSG/RC6502 PSG.pro b/RC6502 PSG/RC6502 PSG.pro
new file mode 100644
index 0000000..d74d87a
--- /dev/null
+++ b/RC6502 PSG/RC6502 PSG.pro	
@@ -0,0 +1,76 @@
+update=26/12/2018 14:40:18
+version=1
+last_client=kicad
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+BoardOutlineThickness=0.100000000000
+ModuleOutlineThickness=0.150000000000
+[cvpcb]
+version=1
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+LibName5=motors
+LibName6=transistors
+LibName7=conn
+LibName8=linear
+LibName9=regul
+LibName10=74xx
+LibName11=cmos4000
+LibName12=adc-dac
+LibName13=memory
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+LibName18=analog_switches
+LibName19=motorola
+LibName20=texas
+LibName21=intel
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+LibName23=interface
+LibName24=digital-audio
+LibName25=philips
+LibName26=display
+LibName27=cypress
+LibName28=siliconi
+LibName29=opto
+LibName30=atmel
+LibName31=contrib
+LibName32=valves
+LibName33=D:/ownCloud/Documents/Projects/RC6502/Templates/rc6502_backplane
+LibName34=SN76489AN
+LibName35=C:/Program Files/KiCad/share/kicad/library/Oscillators
+[schematic_editor]
+version=1
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+PlotDirectoryName=export
+SubpartIdSeparator=0
+SubpartFirstId=65
+NetFmtName=Pcbnew
+SpiceForceRefPrefix=0
+SpiceUseNetNumbers=0
+LabSize=60
diff --git a/RC6502 PSG/RC6502 PSG.sch b/RC6502 PSG/RC6502 PSG.sch
new file mode 100644
index 0000000..4b2e399
--- /dev/null
+++ b/RC6502 PSG/RC6502 PSG.sch	
@@ -0,0 +1,1120 @@
+EESchema Schematic File Version 2
+LIBS:power
+LIBS:device
+LIBS:switches
+LIBS:relays
+LIBS:motors
+LIBS:transistors
+LIBS:conn
+LIBS:linear
+LIBS:regul
+LIBS:74xx
+LIBS:cmos4000
+LIBS:adc-dac
+LIBS:memory
+LIBS:xilinx
+LIBS:microcontrollers
+LIBS:dsp
+LIBS:microchip
+LIBS:analog_switches
+LIBS:motorola
+LIBS:texas
+LIBS:intel
+LIBS:audio
+LIBS:interface
+LIBS:digital-audio
+LIBS:philips
+LIBS:display
+LIBS:cypress
+LIBS:siliconi
+LIBS:opto
+LIBS:atmel
+LIBS:contrib
+LIBS:valves
+LIBS:rc6502_backplane
+LIBS:SN76489AN
+LIBS:Oscillators
+LIBS:RC6502 PSG-cache
+EELAYER 25 0
+EELAYER END
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+F 3 "" H 2750 3075 50  0001 C CNN
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+F 3 "" H 4550 1950 50  0001 C CNN
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+F 3 "" H 6525 3825 50  0001 C CNN
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+	1    3075 4675
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+F 3 "" H 3850 5550 50  0001 C CNN
+	1    3850 5550
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+$EndComp
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+READ
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+	1    3075 5750
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+Wire Bus Line
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+F 3 "" H 4340 2325 50  0001 C CNN
+	1    4350 2375
+	1    0    0    -1  
+$EndComp
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+U 1 1 5C23C542
+P 4050 2375
+F 0 "JP2" H 4050 2455 50  0000 C CNN
+F 1 "SPKR_EN" H 4060 2315 50  0000 C CNN
+F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm" H 4050 2375 50  0001 C CNN
+F 3 "" H 4050 2375 50  0001 C CNN
+	1    4050 2375
+	1    0    0    -1  
+$EndComp
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+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
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+Wire Wire Line
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+NoConn ~ 4100 1950
+$Comp
+L GND #PWR017
+U 1 1 5C240C7F
+P 9825 4350
+F 0 "#PWR017" H 9825 4100 50  0001 C CNN
+F 1 "GND" H 9825 4200 50  0000 C CNN
+F 2 "" H 9825 4350 50  0001 C CNN
+F 3 "" H 9825 4350 50  0001 C CNN
+	1    9825 4350
+	1    0    0    -1  
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+Wire Wire Line
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+Wire Wire Line
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+L VCC #PWR018
+U 1 1 5C240EFC
+P 9875 4050
+F 0 "#PWR018" H 9875 3900 50  0001 C CNN
+F 1 "VCC" H 9875 4200 50  0000 C CNN
+F 2 "" H 9875 4050 50  0001 C CNN
+F 3 "" H 9875 4050 50  0001 C CNN
+	1    9875 4050
+	1    0    0    -1  
+$EndComp
+Text GLabel 7325 4125 0    60   Output ~ 0
+READY
+Wire Wire Line
+	10425 4250 10250 4250
+Wire Wire Line
+	10250 4250 10250 4200
+Wire Wire Line
+	10250 4200 9875 4200
+Wire Wire Line
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+NoConn ~ 10425 3150
+NoConn ~ 10425 3250
+NoConn ~ 10425 3350
+NoConn ~ 10425 3450
+NoConn ~ 10425 3550
+NoConn ~ 10425 3650
+NoConn ~ 10425 3750
+NoConn ~ 10425 3850
+NoConn ~ 10425 3950
+NoConn ~ 10425 4050
+Text Notes 7350 7500 0    60   ~ 0
+RC6502 Programmable Sound Generator
+Text Notes 7025 6950 0    60   ~ 0
+A simple sound card for the RC6502 computer, this one implements the sound chip\noriginally found in systems such as the BBC Micro as well as Sega Master System\nconsoles. Note that the card does not have a designed in reset and needs startup\nroutines to stop it from generating a random noise on power-up.
+$EndSCHEMATC
diff --git a/RC6502 PSG/SN76489AN.dcm b/RC6502 PSG/SN76489AN.dcm
new file mode 100644
index 0000000..5dd71cb
--- /dev/null
+++ b/RC6502 PSG/SN76489AN.dcm	
@@ -0,0 +1,3 @@
+EESchema-DOCLIB  Version 2.0
+#
+#End Doc Library
diff --git a/RC6502 PSG/SN76489AN.lib b/RC6502 PSG/SN76489AN.lib
new file mode 100644
index 0000000..981ecfd
--- /dev/null
+++ b/RC6502 PSG/SN76489AN.lib	
@@ -0,0 +1,32 @@
+EESchema-LIBRARY Version 2.3
+#encoding utf-8
+#
+# SN76489AN
+#
+DEF SN76489AN U 0 40 Y Y 1 F N
+F0 "U" 0 -500 50 H V C CNN
+F1 "SN76489AN" 0 0 50 V V C CNN
+F2 "MODULE" 0 650 50 H I C CNN
+F3 "DOCUMENTATION" 0 -650 50 H I C CNN
+DRAW
+S -450 -550 450 550 1 0 0 N
+X ~WE 5 -750 -50 300 R 50 50 1 0 I
+X D2 1 -750 350 300 R 50 50 1 1 I
+X D1 2 -750 250 300 R 50 50 1 1 I
+X D0 3 -750 150 300 R 50 50 1 1 I
+X READY 4 -750 50 300 R 50 50 1 1 O
+X ~CE 6 -750 -150 300 R 50 50 1 1 I
+X SND 7 -750 -250 300 R 50 50 1 1 O
+X GND 8 -750 -350 300 R 50 50 1 1 W
+X NC 9 750 350 300 L 50 50 1 1 I
+X D7 10 750 250 300 L 50 50 1 1 I
+X D6 11 750 150 300 L 50 50 1 1 I
+X D5 12 750 50 300 L 50 50 1 1 I
+X D4 13 750 -50 300 L 50 50 1 1 I
+X CLOCK 14 750 -150 300 L 50 50 1 1 I
+X D3 15 750 -250 300 L 50 50 1 1 I
+X VCC 16 750 -350 300 L 50 50 1 1 W
+ENDDRAW
+ENDDEF
+#
+#End Library
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