updates

2021-12-19 22:36:04 -07:00 · 2021-12-19 22:36:04 -07:00 · 99a41fb00a
parent fdcc1eea92
commit 99a41fb00a
55 changed files with 743 additions and 1183 deletions
--- a/other/27c020.pdf
+++ b/other/27c020.pdf
--- a/other/LynxEPROMPins.xlsx
+++ b/other/LynxEPROMPins.xlsx
--- a/other/sn74hc245.pdf
+++ b/other/sn74hc245.pdf
--- a/other/txs0108e.pdf
+++ b/other/txs0108e.pdf
--- a/schematic/epromemu-cache.lib
+++ b/schematic/epromemu-cache.lib
@ -1,6 +1,44 @@
 EESchema-LIBRARY Version 2.4
 #encoding utf-8
 #
+# 74xx_74HC245
+#
+DEF 74xx_74HC245 U 0 40 Y Y 1 L N
+F0 "U" -300 650 50 H V C CNN
+F1 "74xx_74HC245" -300 -650 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS 74HC245
+$FPLIST
+ DIP?20*
+$ENDFPLIST
+DRAW
+S -300 600 300 -600 1 1 10 f
+P 3 1 0 0 -25 -50 -25 50 25 50 N
+P 4 1 0 0 -50 -50 25 -50 25 50 50 50 N
+X A->B 1 -500 -400 200 R 50 50 1 0 I
+X GND 10 0 -800 200 U 50 50 1 0 W
+X B7 11 500 -200 200 L 50 50 1 0 T
+X B6 12 500 -100 200 L 50 50 1 0 T
+X B5 13 500 0 200 L 50 50 1 0 T
+X B4 14 500 100 200 L 50 50 1 0 T
+X B3 15 500 200 200 L 50 50 1 0 T
+X B2 16 500 300 200 L 50 50 1 0 T
+X B1 17 500 400 200 L 50 50 1 0 T
+X B0 18 500 500 200 L 50 50 1 0 T
+X CE 19 -500 -500 200 R 50 50 1 0 I I
+X A0 2 -500 500 200 R 50 50 1 0 T
+X VCC 20 0 800 200 D 50 50 1 0 W
+X A1 3 -500 400 200 R 50 50 1 0 T
+X A2 4 -500 300 200 R 50 50 1 0 T
+X A3 5 -500 200 200 R 50 50 1 0 T
+X A4 6 -500 100 200 R 50 50 1 0 T
+X A5 7 -500 0 200 R 50 50 1 0 T
+X A6 8 -500 -100 200 R 50 50 1 0 T
+X A7 9 -500 -200 200 R 50 50 1 0 T
+ENDDRAW
+ENDDEF
+#
 # Connector_Generic_Conn_02x16_Counter_Clockwise
 #
 DEF Connector_Generic_Conn_02x16_Counter_Clockwise J 0 40 Y N 1 F N
@ -80,41 +118,6 @@ X Pin_9 9 -200 -100 150 R 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
-# Logic_LevelTranslator_TXS0108EPW
-#
-DEF Logic_LevelTranslator_TXS0108EPW U 0 20 Y Y 1 F N
-F0 "U" -250 650 50 H V C CNN
-F1 "Logic_LevelTranslator_TXS0108EPW" 150 650 50 H V L CNN
-F2 "Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm" 0 -750 50 H I C CNN
-F3 "" 0 -100 50 H I C CNN
-$FPLIST
- *SSOP*4.4x6.5mm*P0.65mm*
-$ENDFPLIST
-DRAW
-S -300 600 300 -600 0 1 10 f
-X A1 1 -400 300 100 R 50 50 1 1 B
-X OE 10 -400 400 100 R 50 50 1 1 I
-X GND 11 0 -700 100 U 50 50 1 1 W
-X B8 12 400 -400 100 L 50 50 1 1 B
-X B7 13 400 -300 100 L 50 50 1 1 B
-X B6 14 400 -200 100 L 50 50 1 1 B
-X B5 15 400 -100 100 L 50 50 1 1 B
-X B4 16 400 0 100 L 50 50 1 1 B
-X B3 17 400 100 100 L 50 50 1 1 B
-X B2 18 400 200 100 L 50 50 1 1 B
-X VCCB 19 100 700 100 D 50 50 1 1 W
-X VCCA 2 -100 700 100 D 50 50 1 1 W
-X B1 20 400 300 100 L 50 50 1 1 B
-X A2 3 -400 200 100 R 50 50 1 1 B
-X A3 4 -400 100 100 R 50 50 1 1 B
-X A4 5 -400 0 100 R 50 50 1 1 B
-X A5 6 -400 -100 100 R 50 50 1 1 B
-X A6 7 -400 -200 100 R 50 50 1 1 B
-X A7 8 -400 -300 100 R 50 50 1 1 B
-X A8 9 -400 -400 100 R 50 50 1 1 B
-ENDDRAW
-ENDDEF
-#
 # power_+3.3V
 #
 DEF power_+3.3V #PWR 0 0 Y Y 1 F P
@ -131,21 +134,6 @@ X +3V3 1 0 0 0 U 50 50 1 1 W N
 ENDDRAW
 ENDDEF
 #
-# power_+3V3
-#
-DEF power_+3V3 #PWR 0 0 Y Y 1 F P
-F0 "#PWR" 0 -150 50 H I C CNN
-F1 "power_+3V3" 0 140 50 H V C CNN
-F2 "" 0 0 50 H I C CNN
-F3 "" 0 0 50 H I C CNN
-DRAW
-P 2 0 1 0 -30 50 0 100 N
-P 2 0 1 0 0 0 0 100 N
-P 2 0 1 0 0 100 30 50 N
-X +3V3 1 0 0 0 U 50 50 1 1 W N
-ENDDRAW
-ENDDEF
-#
 # power_+5V
 #
 DEF power_+5V #PWR 0 0 Y Y 1 F P
--- a/schematic/epromemu.html
+++ b/schematic/epromemu.html
@ -1,18 +0,0 @@
-
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
-    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml">
-    <head>
-        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-    </head>
-    <body>
-    <h1>C:\Projects\EPROMEmu\schematic\epromemu.sch</h1>
-    <p>12/10/2021 9:49:03 PM</p>
-    <p>Eeschema (5.1.12)-1</p>
-    <p><b>Component Count:</b>6</p>
-    <table>
-    <tr><th style='width:640px'>Ref</th><th>Qnty</th><th>Value</th><th>Part</th><th>Datasheet</th><th>Description</th><th>Vendor</th></tr><tr><td>J1</td><td>1</td><td>EPROM Connector</td><td>Connector_Generic:Conn_02x16_Counter_Clockwise</td><td>~</td><td>Generic connector, double row, 02x16, counter clockwise pin numbering scheme (similar to DIP packge numbering), script generated (kicad-library-utils/schlib/autogen/connector/)</td><td></td></tr><tr><td>U1</td><td>1</td><td>Teensy4.1</td><td>teensy:Teensy4.1</td><td></td><td></td><td></td></tr><tr><td>U2, U3, U4, U5</td><td>4</td><td>TXS0108EPW</td><td>Logic_LevelTranslator:TXS0108EPW</td><td>www.ti.com/lit/ds/symlink/txs0108e.pdf</td><td>Bidirectional  level-shifting voltage translator, TSSOP-20</td><td></td></tr><!--TABLEROW-->
-    </table>
-    </body>
-</html>
-    
--- a/schematic/epromemu.kicad_pcb
+++ b/schematic/epromemu.kicad_pcb
--- a/schematic/epromemu.rules
+++ b/schematic/epromemu.rules
@ -11,7 +11,7 @@
    (via_costs 50)
    (plane_via_costs 5)
    (start_ripup_costs 100)
-    (start_pass_no 6)
+    (start_pass_no 10)
    (layer_rule F.Cu
      (active on)
      (preferred_direction horizontal)
@ -69,7 +69,8 @@
    "A7_5V" "A12_5V" "A15_5V" "A16_5V" "A1_3V3" "A16_3V3" "A17_3V3" "A0_3V3"
    +3V3 "D1_3V3" "D6_3V3" "A14_3V3" "A15_3V3" "A6_3V3" "A7_3V3" "D2_3V3"
    "D0_3V3" "D5_3V3" "D7_3V3" "D4_3V3" "D3_3V3" "A4_3V3" "A5_3V3" "A9_3V3"
-    "A8_3V3" "A3_3V3" "A2_3V3" "A12_3V3" "A13_3V3" "A10_3V3" "A11_3V3"
+    "A8_3V3" "A3_3V3" "A2_3V3" "A12_3V3" "A13_3V3" "A10_3V3" "A11_3V3" "PGM_5V"
+    "OE_5V" "CE_5V" "PGM_3V3" "CE_3V3"
    (clearance_class "kicad_default")
    (via_rule kicad_default)
    (rule
--- a/schematic/epromemu.sch
+++ b/schematic/epromemu.sch
@ -14,19 +14,6 @@ Comment3 ""
 Comment4 ""
 $EndDescr
 $Comp
-L power:GND #PWR0102
-U 1 1 61A6C548
-P 8300 2450
-F 0 "#PWR0102" H 8300 2200 50  0001 C CNN
-F 1 "GND" H 8305 2277 50  0000 C CNN
-F 2 "" H 8300 2450 50  0001 C CNN
-F 3 "" H 8300 2450 50  0001 C CNN
-	1    8300 2450
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	7750 2450 8300 2450
-$Comp
 L teensy:Teensy4.1 U1
 U 1 1 61A52DD6
 P 5350 3300
@ -37,22 +24,11 @@ F 3 "" H 4950 3700 50  0001 C CNN
 	1    5350 3300
 	1    0    0    -1  
 $EndComp
-$Comp
-L Connector_Generic:Conn_02x16_Counter_Clockwise J1
-U 1 1 61A9BE2D
-P 5300 5750
-F 0 "J1" H 5400 6600 50  0000 R CNN
-F 1 "EPROM Connector" H 5650 6700 50  0000 R CNN
-F 2 "Connector_PinHeader_2.54mm:PinHeader_2x16_P2.54mm_Vertical" H 5300 5750 50  0001 C CNN
-F 3 "~" H 5300 5750 50  0001 C CNN
-	1    5300 5750
-	1    0    0    1   
-$EndComp
-Text GLabel 3300 1400 2    50   Input ~ 0
+Text GLabel 3300 1800 2    50   Input ~ 0
 D4_3V3
-Text GLabel 3300 1500 2    50   Input ~ 0
+Text GLabel 3300 2100 2    50   Input ~ 0
 D7_3V3
-Text GLabel 3300 1600 2    50   Input ~ 0
+Text GLabel 3300 1900 2    50   Input ~ 0
 D5_3V3
 Text GLabel 4250 1850 0    50   Input ~ 0
 D4_3V3
@ -62,83 +38,39 @@ Text GLabel 4250 2150 0    50   Input ~ 0
 D5_3V3
 Text GLabel 4250 2250 0    50   Input ~ 0
 D0_3V3
-Text GLabel 3300 1700 2    50   Input ~ 0
+Text GLabel 3300 1400 2    50   Input ~ 0
 D0_3V3
-Text GLabel 3300 1800 2    50   Input ~ 0
+Text GLabel 3300 1600 2    50   Input ~ 0
 D2_3V3
 Text GLabel 4250 2350 0    50   Input ~ 0
 D2_3V3
 Text GLabel 4250 2450 0    50   Input ~ 0
 D1_3V3
-Text GLabel 3300 1900 2    50   Input ~ 0
+Text GLabel 3300 1500 2    50   Input ~ 0
 D1_3V3
 Text GLabel 4250 2650 0    50   Input ~ 0
 A0_3V3
-Text GLabel 3300 2000 2    50   Input ~ 0
+Text GLabel 2300 3550 0    50   Input ~ 0
 A0_3V3
-Text GLabel 3300 2100 2    50   Input ~ 0
+Text GLabel 2300 3650 0    50   Input ~ 0
 A1_3V3
 Text GLabel 4250 2750 0    50   Input ~ 0
 A1_3V3
-Text GLabel 2500 1400 0    50   Input ~ 0
+Text GLabel 2300 1800 0    50   Input ~ 0
 D4_5V
-Text GLabel 2500 1500 0    50   Input ~ 0
+Text GLabel 2300 2100 0    50   Input ~ 0
 D7_5V
-$Comp
-L power:+3V3 #PWR0109
-U 1 1 61B41B66
-P 3150 2500
-F 0 "#PWR0109" H 3150 2350 50  0001 C CNN
-F 1 "+3V3" H 3165 2673 50  0000 C CNN
-F 2 "" H 3150 2500 50  0001 C CNN
-F 3 "" H 3150 2500 50  0001 C CNN
-	1    3150 2500
-	-1   0    0    1   
-$EndComp
-$Comp
-L power:+3V3 #PWR0110
-U 1 1 61B4ACB6
-P 7550 1050
-F 0 "#PWR0110" H 7550 900 50  0001 C CNN
-F 1 "+3V3" H 7565 1223 50  0000 C CNN
-F 2 "" H 7550 1050 50  0001 C CNN
-F 3 "" H 7550 1050 50  0001 C CNN
-	1    7550 1050
-	1    0    0    -1  
-$EndComp
-$Comp
-L power:+3V3 #PWR0111
-U 1 1 61B4B7D2
-P 7600 3150
-F 0 "#PWR0111" H 7600 3000 50  0001 C CNN
-F 1 "+3V3" H 7615 3323 50  0000 C CNN
-F 2 "" H 7600 3150 50  0001 C CNN
-F 3 "" H 7600 3150 50  0001 C CNN
-	1    7600 3150
-	1    0    0    -1  
-$EndComp
-$Comp
-L power:+3V3 #PWR0105
-U 1 1 61B4C2EE
-P 3600 2550
-F 0 "#PWR0105" H 3600 2400 50  0001 C CNN
-F 1 "+3V3" H 3615 2723 50  0000 C CNN
-F 2 "" H 3600 2550 50  0001 C CNN
-F 3 "" H 3600 2550 50  0001 C CNN
-	1    3600 2550
-	-1   0    0    1   
-$EndComp
-Text GLabel 2500 1600 0    50   Input ~ 0
+Text GLabel 2300 1900 0    50   Input ~ 0
 D5_5V
-Text GLabel 2500 1700 0    50   Input ~ 0
+Text GLabel 2300 1400 0    50   Input ~ 0
 D0_5V
-Text GLabel 2500 1800 0    50   Input ~ 0
+Text GLabel 2300 1600 0    50   Input ~ 0
 D2_5V
-Text GLabel 2500 1900 0    50   Input ~ 0
+Text GLabel 2300 1500 0    50   Input ~ 0
 D1_5V
-Text GLabel 2500 2000 0    50   Input ~ 0
+Text GLabel 3300 3550 2    50   Input ~ 0
 A0_5V
-Text GLabel 2500 2100 0    50   Input ~ 0
+Text GLabel 3300 3650 2    50   Input ~ 0
 A1_5V
 $Comp
 L power:GND #PWR0107
@ -158,96 +90,25 @@ Wire Wire Line
 $Comp
 L power:+5V #PWR0112
 U 1 1 61B52D90
-P 5900 6450
-F 0 "#PWR0112" H 5900 6300 50  0001 C CNN
-F 1 "+5V" H 5850 6600 50  0000 L CNN
-F 2 "" H 5900 6450 50  0001 C CNN
-F 3 "" H 5900 6450 50  0001 C CNN
-	1    5900 6450
-	-1   0    0    1   
-$EndComp
-$Comp
-L power:+3.3V #PWR0108
-U 1 1 61B423C6
-P 3150 4550
-F 0 "#PWR0108" H 3150 4400 50  0001 C CNN
-F 1 "+3.3V" H 3165 4723 50  0000 C CNN
-F 2 "" H 3150 4550 50  0001 C CNN
-F 3 "" H 3150 4550 50  0001 C CNN
-	1    3150 4550
-	-1   0    0    1   
-$EndComp
-$Comp
-L power:+5V #PWR0113
-U 1 1 61B53ADF
-P 2650 4550
-F 0 "#PWR0113" H 2650 4400 50  0001 C CNN
-F 1 "+5V" H 2665 4723 50  0000 C CNN
-F 2 "" H 2650 4550 50  0001 C CNN
-F 3 "" H 2650 4550 50  0001 C CNN
-	1    2650 4550
-	-1   0    0    1   
-$EndComp
-$Comp
-L Logic_LevelTranslator:TXS0108EPW U3
-U 1 1 61A55DAA
-P 2900 3850
-F 0 "U3" H 2900 3061 50  0000 C CNN
-F 1 "TXS0108EPW" H 2900 2970 50  0000 C CNN
-F 2 "Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm" H 2900 3100 50  0001 C CNN
-F 3 "www.ti.com/lit/ds/symlink/txs0108e.pdf" H 2900 3750 50  0001 C CNN
-	1    2900 3850
+P 5900 6650
+F 0 "#PWR0112" H 5900 6500 50  0001 C CNN
+F 1 "+5V" H 5850 6800 50  0000 L CNN
+F 2 "" H 5900 6650 50  0001 C CNN
+F 3 "" H 5900 6650 50  0001 C CNN
+	1    5900 6650
 	-1   0    0    1   
 $EndComp
 $Comp
 L power:+5V #PWR0114
 U 1 1 61B58CD7
-P 2650 2500
-F 0 "#PWR0114" H 2650 2350 50  0001 C CNN
-F 1 "+5V" H 2665 2673 50  0000 C CNN
-F 2 "" H 2650 2500 50  0001 C CNN
-F 3 "" H 2650 2500 50  0001 C CNN
-	1    2650 2500
-	-1   0    0    1   
+P 2800 1100
+F 0 "#PWR0114" H 2800 950 50  0001 C CNN
+F 1 "+5V" V 2815 1273 50  0000 C CNN
+F 2 "" H 2800 1100 50  0001 C CNN
+F 3 "" H 2800 1100 50  0001 C CNN
+	1    2800 1100
+	0    1    1    0   
 $EndComp
-Wire Wire Line
-	3000 2500 3150 2500
-Wire Wire Line
-	2800 2500 2650 2500
-Wire Wire Line
-	2650 4550 2800 4550
-Wire Wire Line
-	3000 4550 3150 4550
-Wire Wire Line
-	7600 3150 7700 3150
-$Comp
-L power:+5V #PWR0115
-U 1 1 61B66B1F
-P 8000 3150
-F 0 "#PWR0115" H 8000 3000 50  0001 C CNN
-F 1 "+5V" H 8015 3323 50  0000 C CNN
-F 2 "" H 8000 3150 50  0001 C CNN
-F 3 "" H 8000 3150 50  0001 C CNN
-	1    8000 3150
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	8000 3150 7900 3150
-Wire Wire Line
-	7650 1050 7550 1050
-$Comp
-L power:+5V #PWR0116
-U 1 1 61B6924B
-P 7950 1050
-F 0 "#PWR0116" H 7950 900 50  0001 C CNN
-F 1 "+5V" H 7965 1223 50  0000 C CNN
-F 2 "" H 7950 1050 50  0001 C CNN
-F 3 "" H 7950 1050 50  0001 C CNN
-	1    7950 1050
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	7950 1050 7850 1050
 Text GLabel 5100 6350 0    50   Input ~ 0
 A16_5V
 Text GLabel 5100 6250 0    50   Input ~ 0
@ -300,19 +161,6 @@ Text GLabel 5600 6150 2    50   Input ~ 0
 A14_5V
 Text GLabel 5600 6250 2    50   Input ~ 0
 A17_5V
-$Comp
-L power:GND #PWR0117
-U 1 1 61B44525
-P 6050 5650
-F 0 "#PWR0117" H 6050 5400 50  0001 C CNN
-F 1 "GND" H 6055 5477 50  0000 C CNN
-F 2 "" H 6050 5650 50  0001 C CNN
-F 3 "" H 6050 5650 50  0001 C CNN
-	1    6050 5650
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	6050 5650 5600 5650
 Text GLabel 4250 2850 0    50   Input ~ 0
 A16_3V3
 Text GLabel 4250 2950 0    50   Input ~ 0
@ -327,17 +175,9 @@ Text GLabel 6450 2750 2    50   Input ~ 0
 A6_3V3
 Text GLabel 6450 2650 2    50   Input ~ 0
 A7_3V3
-Text GLabel 3300 3450 2    50   Input ~ 0
-A16_3V3
-Text GLabel 3300 3550 2    50   Input ~ 0
-A17_3V3
-Text GLabel 3300 3650 2    50   Input ~ 0
+Text GLabel 3300 2000 2    50   Input ~ 0
 D6_3V3
-Text GLabel 2500 3450 0    50   Input ~ 0
-A16_5V
-Text GLabel 2500 3550 0    50   Input ~ 0
-A17_5V
-Text GLabel 2500 3650 0    50   Input ~ 0
+Text GLabel 2300 2000 0    50   Input ~ 0
 D6_5V
 NoConn ~ 4250 1250
 NoConn ~ 4250 1350
@ -368,9 +208,6 @@ NoConn ~ 6450 4000
 NoConn ~ 6450 3900
 NoConn ~ 6450 3800
 NoConn ~ 6450 3700
-NoConn ~ 6450 3450
-NoConn ~ 6450 3350
-NoConn ~ 6450 3250
 NoConn ~ 6450 3150
 NoConn ~ 6450 3050
 Text GLabel 6450 2450 2    50   Input ~ 0
@ -400,91 +237,66 @@ NoConn ~ 6450 1250
 NoConn ~ 6450 1150
 NoConn ~ 6450 1000
 NoConn ~ 6450 2550
-Text GLabel 7350 1450 0    50   Input ~ 0
-A11_3V3
-Text GLabel 7350 1550 0    50   Input ~ 0
-A10_3V3
-Text GLabel 7350 1650 0    50   Input ~ 0
-A13_3V3
 Text GLabel 7350 1750 0    50   Input ~ 0
-A12_3V3
-Text GLabel 7350 1850 0    50   Input ~ 0
-A2_3V3
+A11_3V3
+Text GLabel 7350 1650 0    50   Input ~ 0
+A10_3V3
 Text GLabel 7350 1950 0    50   Input ~ 0
+A13_3V3
+Text GLabel 7350 1850 0    50   Input ~ 0
+A12_3V3
+Text GLabel 2300 3750 0    50   Input ~ 0
+A2_3V3
+Text GLabel 2300 3850 0    50   Input ~ 0
 A3_3V3
-Text GLabel 7350 2050 0    50   Input ~ 0
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 A8_3V3
-Text GLabel 7350 2150 0    50   Input ~ 0
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 A9_3V3
-$Comp
-L Logic_LevelTranslator:TXS0108EPW U4
-U 1 1 61A5865B
-P 7800 3850
-F 0 "U4" H 7800 3061 50  0000 C CNN
-F 1 "TXS0108EPW" H 7800 2970 50  0000 C CNN
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-F 3 "www.ti.com/lit/ds/symlink/txs0108e.pdf" H 7800 3750 50  0001 C CNN
-	1    7800 3850
-	1    0    0    -1  
-$EndComp
-NoConn ~ 7400 4250
-NoConn ~ 8200 4250
-NoConn ~ 2500 3950
-NoConn ~ 2500 4050
-NoConn ~ 2500 4150
-NoConn ~ 3300 4150
-NoConn ~ 3300 4050
-NoConn ~ 3300 3950
-Text GLabel 8150 1450 2    50   Input ~ 0
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 A11_5V
-Text GLabel 8150 1550 2    50   Input ~ 0
+Text GLabel 8350 1650 2    50   Input ~ 0
 A10_5V
-Text GLabel 8150 1650 2    50   Input ~ 0
+Text GLabel 8350 1950 2    50   Input ~ 0
 A13_5V
-Text GLabel 8150 1750 2    50   Input ~ 0
+Text GLabel 8350 1850 2    50   Input ~ 0
 A12_5V
-Text GLabel 8150 1850 2    50   Input ~ 0
+Text GLabel 3300 3750 2    50   Input ~ 0
 A2_5V
-Text GLabel 8150 1950 2    50   Input ~ 0
+Text GLabel 3300 3850 2    50   Input ~ 0
 A3_5V
-Text GLabel 8150 2050 2    50   Input ~ 0
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 A8_5V
-Text GLabel 8150 2150 2    50   Input ~ 0
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 A9_5V
-Text GLabel 7400 4150 0    50   Input ~ 0
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 A14_3V3
-Text GLabel 7400 4050 0    50   Input ~ 0
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 A15_3V3
-Text GLabel 7400 3950 0    50   Input ~ 0
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 A6_3V3
-Text GLabel 7400 3850 0    50   Input ~ 0
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 A7_3V3
-Text GLabel 7400 3750 0    50   Input ~ 0
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 D3_3V3
-Text GLabel 7400 3650 0    50   Input ~ 0
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 A4_3V3
-Text GLabel 7400 3550 0    50   Input ~ 0
+Text GLabel 2300 4050 0    50   Input ~ 0
 A5_3V3
-Text GLabel 8200 3550 2    50   Input ~ 0
+Text GLabel 3300 4050 2    50   Input ~ 0
 A5_5V
-Text GLabel 8200 3650 2    50   Input ~ 0
+Text GLabel 3300 3950 2    50   Input ~ 0
 A4_5V
-Text GLabel 8200 3750 2    50   Input ~ 0
+Text GLabel 2300 1700 0    50   Input ~ 0
 D3_5V
-Text GLabel 8200 3850 2    50   Input ~ 0
+Text GLabel 3300 4250 2    50   Input ~ 0
 A7_5V
-Text GLabel 8200 3950 2    50   Input ~ 0
+Text GLabel 3300 4150 2    50   Input ~ 0
 A6_5V
-Text GLabel 8200 4050 2    50   Input ~ 0
+Text GLabel 8350 2150 2    50   Input ~ 0
 A15_5V
-Text GLabel 8200 4150 2    50   Input ~ 0
+Text GLabel 8350 2050 2    50   Input ~ 0
 A14_5V
-NoConn ~ 5600 6350
-NoConn ~ 5100 6450
-NoConn ~ 2500 3850
-NoConn ~ 2500 3750
-NoConn ~ 3300 3750
-NoConn ~ 3300 3850
 Wire Wire Line
 	4100 1150 4250 1150
 $Comp
@ -501,55 +313,16 @@ $EndComp
 Wire Wire Line
 	3600 2550 3700 2550
 $Comp
-L Logic_LevelTranslator:TXS0108EPW U2
-U 1 1 61A54FCD
-P 2900 1800
-F 0 "U2" H 2900 1011 50  0000 C CNN
-F 1 "TXS0108EPW" H 2900 920 50  0000 C CNN
-F 2 "Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm" H 2900 1050 50  0001 C CNN
-F 3 "www.ti.com/lit/ds/symlink/txs0108e.pdf" H 2900 1700 50  0001 C CNN
-	1    2900 1800
-	-1   0    0    1   
-$EndComp
-$Comp
 L power:GND #PWR0103
 U 1 1 61B6B98A
-P 2000 1100
-F 0 "#PWR0103" H 2000 850 50  0001 C CNN
-F 1 "GND" H 2005 927 50  0000 C CNN
-F 2 "" H 2000 1100 50  0001 C CNN
-F 3 "" H 2000 1100 50  0001 C CNN
-	1    2000 1100
+P 2800 2700
+F 0 "#PWR0103" H 2800 2450 50  0001 C CNN
+F 1 "GND" H 2805 2527 50  0000 C CNN
+F 2 "" H 2800 2700 50  0001 C CNN
+F 3 "" H 2800 2700 50  0001 C CNN
+	1    2800 2700
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	2900 1100 2000 1100
-$Comp
-L power:GND #PWR0101
-U 1 1 61B70682
-P 2000 3150
-F 0 "#PWR0101" H 2000 2900 50  0001 C CNN
-F 1 "GND" H 2005 2977 50  0000 C CNN
-F 2 "" H 2000 3150 50  0001 C CNN
-F 3 "" H 2000 3150 50  0001 C CNN
-	1    2000 3150
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	2000 3150 2900 3150
-$Comp
-L power:GND #PWR0104
-U 1 1 61B7133C
-P 8400 4550
-F 0 "#PWR0104" H 8400 4300 50  0001 C CNN
-F 1 "GND" H 8405 4377 50  0000 C CNN
-F 2 "" H 8400 4550 50  0001 C CNN
-F 3 "" H 8400 4550 50  0001 C CNN
-	1    8400 4550
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	8400 4550 7800 4550
 $Comp
 L power:PWR_FLAG #FLG0101
 U 1 1 61B71FE1
@ -589,16 +362,226 @@ F 3 "~" H 5900 6450 50  0001 C CNN
 	1    5900 6450
 	0    1    1    0   
 $EndComp
-Connection ~ 5900 6450
 $Comp
-L Logic_LevelTranslator:TXS0108EPW U5
-U 1 1 61A56F94
-P 7750 1750
-F 0 "U5" H 7750 961 50  0000 C CNN
-F 1 "TXS0108EPW" H 7750 870 50  0000 C CNN
-F 2 "Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm" H 7750 1000 50  0001 C CNN
-F 3 "www.ti.com/lit/ds/symlink/txs0108e.pdf" H 7750 1650 50  0001 C CNN
-	1    7750 1750
+L 74xx:74HC245 U2
+U 1 1 61BFF42A
+P 2800 1900
+F 0 "U2" H 2800 2881 50  0000 C CNN
+F 1 "74HC245" H 2800 2790 50  0000 C CNN
+F 2 "Package_DIP:DIP-20_W7.62mm_Socket" H 2800 1900 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74HC245" H 2800 1900 50  0001 C CNN
+	1    2800 1900
 	1    0    0    -1  
 $EndComp
+$Comp
+L 74xx:74HC245 U3
+U 1 1 61C044A4
+P 2800 4050
+F 0 "U3" H 2800 5031 50  0000 C CNN
+F 1 "74HC245" H 2800 4940 50  0000 C CNN
+F 2 "Package_DIP:DIP-20_W7.62mm_Socket" H 2800 4050 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74HC245" H 2800 4050 50  0001 C CNN
+	1    2800 4050
+	1    0    0    -1  
+$EndComp
+$Comp
+L 74xx:74HC245 U4
+U 1 1 61C0A79A
+P 7850 1950
+F 0 "U4" H 7850 2931 50  0000 C CNN
+F 1 "74HC245" H 7850 2840 50  0000 C CNN
+F 2 "Package_DIP:DIP-20_W7.62mm_Socket" H 7850 1950 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74HC245" H 7850 1950 50  0001 C CNN
+	1    7850 1950
+	1    0    0    -1  
+$EndComp
+Text GLabel 7350 3550 0    50   Input ~ 0
+A16_3V3
+Text GLabel 7350 3650 0    50   Input ~ 0
+A17_3V3
+Text GLabel 8350 3550 2    50   Input ~ 0
+A16_5V
+Text GLabel 8350 3650 2    50   Input ~ 0
+A17_5V
+$Comp
+L power:GND #PWR0101
+U 1 1 61C10C6A
+P 2800 4850
+F 0 "#PWR0101" H 2800 4600 50  0001 C CNN
+F 1 "GND" H 2805 4677 50  0000 C CNN
+F 2 "" H 2800 4850 50  0001 C CNN
+F 3 "" H 2800 4850 50  0001 C CNN
+	1    2800 4850
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR0102
+U 1 1 61C11276
+P 7850 2750
+F 0 "#PWR0102" H 7850 2500 50  0001 C CNN
+F 1 "GND" H 7855 2577 50  0000 C CNN
+F 2 "" H 7850 2750 50  0001 C CNN
+F 3 "" H 7850 2750 50  0001 C CNN
+	1    7850 2750
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR0104
+U 1 1 61C117F6
+P 7850 4850
+F 0 "#PWR0104" H 7850 4600 50  0001 C CNN
+F 1 "GND" H 7855 4677 50  0000 C CNN
+F 2 "" H 7850 4850 50  0001 C CNN
+F 3 "" H 7850 4850 50  0001 C CNN
+	1    7850 4850
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:+3.3V #PWR0108
+U 1 1 61C11FE4
+P 2800 3250
+F 0 "#PWR0108" H 2800 3100 50  0001 C CNN
+F 1 "+3.3V" V 2815 3378 50  0000 L CNN
+F 2 "" H 2800 3250 50  0001 C CNN
+F 3 "" H 2800 3250 50  0001 C CNN
+	1    2800 3250
+	0    1    1    0   
+$EndComp
+$Comp
+L power:+3.3V #PWR0109
+U 1 1 61C12CCA
+P 7850 3250
+F 0 "#PWR0109" H 7850 3100 50  0001 C CNN
+F 1 "+3.3V" V 7865 3378 50  0000 L CNN
+F 2 "" H 7850 3250 50  0001 C CNN
+F 3 "" H 7850 3250 50  0001 C CNN
+	1    7850 3250
+	0    1    1    0   
+$EndComp
+$Comp
+L power:+3.3V #PWR0110
+U 1 1 61C1329C
+P 7850 1150
+F 0 "#PWR0110" H 7850 1000 50  0001 C CNN
+F 1 "+3.3V" V 7865 1278 50  0000 L CNN
+F 2 "" H 7850 1150 50  0001 C CNN
+F 3 "" H 7850 1150 50  0001 C CNN
+	1    7850 1150
+	0    1    1    0   
+$EndComp
+$Comp
+L power:+3.3V #PWR0105
+U 1 1 61C14256
+P 3600 2550
+F 0 "#PWR0105" H 3600 2400 50  0001 C CNN
+F 1 "+3.3V" H 3615 2723 50  0000 C CNN
+F 2 "" H 3600 2550 50  0001 C CNN
+F 3 "" H 3600 2550 50  0001 C CNN
+	1    3600 2550
+	-1   0    0    1   
+$EndComp
+$Comp
+L 74xx:74HC245 U5
+U 1 1 61C0D6BD
+P 7850 4050
+F 0 "U5" H 7850 5031 50  0000 C CNN
+F 1 "74HC245" H 7850 4940 50  0000 C CNN
+F 2 "Package_DIP:DIP-20_W7.62mm_Socket" H 7850 4050 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74HC245" H 7850 4050 50  0001 C CNN
+	1    7850 4050
+	1    0    0    -1  
+$EndComp
+NoConn ~ 7350 4050
+NoConn ~ 7350 4150
+NoConn ~ 7350 4250
+NoConn ~ 8350 4250
+NoConn ~ 8350 4150
+NoConn ~ 8350 4050
+Text GLabel 5600 5450 2    50   Input ~ 0
+CE_5V
+Text GLabel 5600 5650 2    50   Input ~ 0
+OE_5V
+Text GLabel 8350 3850 2    50   Input ~ 0
+CE_5V
+Text GLabel 7350 3850 0    50   Input ~ 0
+CE_3V3
+Text GLabel 5600 6350 2    50   Input ~ 0
+PGM_5V
+Text GLabel 7350 3950 0    50   Input ~ 0
+PGM_3V3
+Text GLabel 8350 3950 2    50   Input ~ 0
+PGM_5V
+Text GLabel 6450 3450 2    50   Input ~ 0
+PGM_3V3
+$Comp
+L Connector_Generic:Conn_02x16_Counter_Clockwise J1
+U 1 1 61A9BE2D
+P 5300 5750
+F 0 "J1" H 5400 6600 50  0000 R CNN
+F 1 "EPROM Connector" H 5650 6700 50  0000 R CNN
+F 2 "Connector_PinHeader_2.54mm:PinHeader_2x16_P2.54mm_Vertical" H 5300 5750 50  0001 C CNN
+F 3 "~" H 5300 5750 50  0001 C CNN
+	1    5300 5750
+	1    0    0    1   
+$EndComp
+Text GLabel 6450 3350 2    50   Input ~ 0
+CE_3V3
+Wire Wire Line
+	5100 6450 5100 6550
+Wire Wire Line
+	5100 6550 5900 6550
+Wire Wire Line
+	5900 6450 5900 6550
+Connection ~ 5900 6550
+Connection ~ 5900 6450
+Wire Wire Line
+	5900 6550 5900 6650
+Wire Wire Line
+	2800 2700 2150 2700
+Wire Wire Line
+	2150 2700 2150 2300
+Wire Wire Line
+	2150 2300 2300 2300
+Connection ~ 2800 2700
+Wire Wire Line
+	7850 2750 7350 2750
+Wire Wire Line
+	7200 2750 7200 2350
+Wire Wire Line
+	7200 2350 7350 2350
+Connection ~ 7850 2750
+Wire Wire Line
+	7850 4850 7350 4850
+Wire Wire Line
+	7200 4850 7200 4450
+Wire Wire Line
+	7200 4450 7350 4450
+Connection ~ 7850 4850
+Wire Wire Line
+	2800 4850 2300 4850
+Wire Wire Line
+	2150 4850 2150 4450
+Wire Wire Line
+	2150 4450 2300 4450
+Connection ~ 2800 4850
+Wire Wire Line
+	7350 4550 7350 4850
+Connection ~ 7350 4850
+Wire Wire Line
+	7350 4850 7200 4850
+Wire Wire Line
+	7350 2450 7350 2750
+Connection ~ 7350 2750
+Wire Wire Line
+	7350 2750 7200 2750
+Wire Wire Line
+	2300 4550 2300 4850
+Connection ~ 2300 4850
+Wire Wire Line
+	2300 4850 2150 4850
+Text GLabel 2300 2400 0    50   Input ~ 0
+OE_5V
+NoConn ~ 6450 3250
+NoConn ~ 8350 3750
+NoConn ~ 7350 3750
 $EndSCHEMATC
--- a/schematic/epromemu_op1.bin
+++ b/schematic/epromemu_op1.bin
--- a/schematic/epromemu_op10.bin
+++ b/schematic/epromemu_op10.bin
--- a/schematic/epromemu_op11.bin
+++ b/schematic/epromemu_op11.bin
--- a/schematic/epromemu_op12.bin
+++ b/schematic/epromemu_op12.bin
--- a/schematic/epromemu_op13.bin
+++ b/schematic/epromemu_op13.bin
--- a/schematic/epromemu_op14.bin
+++ b/schematic/epromemu_op14.bin
--- a/schematic/epromemu_op15.bin
+++ b/schematic/epromemu_op15.bin
--- a/schematic/epromemu_op16.bin
+++ b/schematic/epromemu_op16.bin
--- a/schematic/epromemu_op17.bin
+++ b/schematic/epromemu_op17.bin
--- a/schematic/epromemu_op18.bin
+++ b/schematic/epromemu_op18.bin
--- a/schematic/epromemu_op19.bin
+++ b/schematic/epromemu_op19.bin
--- a/schematic/epromemu_op2.bin
+++ b/schematic/epromemu_op2.bin
--- a/schematic/epromemu_op20.bin
+++ b/schematic/epromemu_op20.bin
--- a/schematic/epromemu_op21.bin
+++ b/schematic/epromemu_op21.bin
--- a/schematic/epromemu_op22.bin
+++ b/schematic/epromemu_op22.bin
--- a/schematic/epromemu_op23.bin
+++ b/schematic/epromemu_op23.bin
--- a/schematic/epromemu_op24.bin
+++ b/schematic/epromemu_op24.bin
--- a/schematic/epromemu_op25.bin
+++ b/schematic/epromemu_op25.bin
--- a/schematic/epromemu_op26.bin
+++ b/schematic/epromemu_op26.bin
--- a/schematic/epromemu_op27.bin
+++ b/schematic/epromemu_op27.bin
--- a/schematic/epromemu_op28.bin
+++ b/schematic/epromemu_op28.bin
--- a/schematic/epromemu_op29.bin
+++ b/schematic/epromemu_op29.bin
--- a/schematic/epromemu_op3.bin
+++ b/schematic/epromemu_op3.bin
--- a/schematic/epromemu_op30.bin
+++ b/schematic/epromemu_op30.bin
--- a/schematic/epromemu_op31.bin
+++ b/schematic/epromemu_op31.bin
--- a/schematic/epromemu_op32.bin
+++ b/schematic/epromemu_op32.bin
--- a/schematic/epromemu_op33.bin
+++ b/schematic/epromemu_op33.bin
--- a/schematic/epromemu_op34.bin
+++ b/schematic/epromemu_op34.bin
--- a/schematic/epromemu_op35.bin
+++ b/schematic/epromemu_op35.bin
--- a/schematic/epromemu_op36.bin
+++ b/schematic/epromemu_op36.bin
--- a/schematic/epromemu_op37.bin
+++ b/schematic/epromemu_op37.bin
--- a/schematic/epromemu_op38.bin
+++ b/schematic/epromemu_op38.bin
--- a/schematic/epromemu_op39.bin
+++ b/schematic/epromemu_op39.bin
--- a/schematic/epromemu_op4.bin
+++ b/schematic/epromemu_op4.bin
--- a/schematic/epromemu_op40.bin
+++ b/schematic/epromemu_op40.bin
--- a/schematic/epromemu_op41.bin
+++ b/schematic/epromemu_op41.bin
--- a/schematic/epromemu_op42.bin
+++ b/schematic/epromemu_op42.bin
--- a/schematic/epromemu_op43.bin
+++ b/schematic/epromemu_op43.bin
--- a/schematic/epromemu_op44.bin
+++ b/schematic/epromemu_op44.bin
--- a/schematic/epromemu_op45.bin
+++ b/schematic/epromemu_op45.bin
--- a/schematic/epromemu_op46.bin
+++ b/schematic/epromemu_op46.bin
--- a/schematic/epromemu_op5.bin
+++ b/schematic/epromemu_op5.bin
--- a/schematic/epromemu_op6.bin
+++ b/schematic/epromemu_op6.bin
--- a/schematic/epromemu_op7.bin
+++ b/schematic/epromemu_op7.bin
--- a/schematic/epromemu_op8.bin
+++ b/schematic/epromemu_op8.bin
--- a/schematic/epromemu_op9.bin
+++ b/schematic/epromemu_op9.bin