EESchema Schematic File Version 4
LIBS:saved-rc2014-connector-cache
EELAYER 29 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text GLabel 900  1900 2    50   Output ~ 0
A10
Text GLabel 900  2000 2    50   Output ~ 0
A9
Text GLabel 900  2100 2    50   Output ~ 0
A8
Text GLabel 900  2200 2    50   Output ~ 0
A7
Text GLabel 900  2300 2    50   Output ~ 0
A6
Text GLabel 900  2400 2    50   Output ~ 0
A5
Text GLabel 900  2500 2    50   Output ~ 0
A4
Text GLabel 900  2600 2    50   Output ~ 0
A3
Text GLabel 900  3000 2    50   Output ~ 0
GND
Text GLabel 900  3100 2    50   Output ~ 0
VCC
Text GLabel 900  3200 2    50   Output ~ 0
M1
Text GLabel 900  3800 2    50   Output ~ 0
RD
Text GLabel 900  3900 2    50   Output ~ 0
IORQ
Text GLabel 900  4000 2    50   3State ~ 0
D0
Text GLabel 900  4100 2    50   3State ~ 0
D1
Text GLabel 900  4200 2    50   3State ~ 0
D2
Text GLabel 900  4300 2    50   3State ~ 0
D3
Text GLabel 900  4400 2    50   3State ~ 0
D4
Text GLabel 900  4500 2    50   3State ~ 0
D5
Text GLabel 900  4600 2    50   3State ~ 0
D6
Text GLabel 900  4700 2    50   3State ~ 0
D7
$Comp
L 74xx:74LS245 U3
U 1 1 5D4E3D12
P 6600 4750
F 0 "U3" H 6200 5600 50  0000 C CNN
F 1 "74HCT245" H 6200 5500 50  0000 C CNN
F 2 "Package_DIP:DIP-20_W7.62mm" H 6600 4750 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS245" H 6600 4750 50  0001 C CNN
	1    6600 4750
	1    0    0    -1  
$EndComp
Text GLabel 6150 1550 0    50   Input ~ 0
A8
Text GLabel 6150 1650 0    50   Input ~ 0
A9
Text GLabel 6150 1750 0    50   Input ~ 0
A10
Text GLabel 6150 1850 0    50   Input ~ 0
A11
Text GLabel 6150 1950 0    50   Input ~ 0
A12
Text GLabel 6150 2050 0    50   Input ~ 0
A13
Text GLabel 6150 2150 0    50   Input ~ 0
A14
Text GLabel 6150 2250 0    50   Input ~ 0
A15
$Comp
L Diode:1N4148 D1
U 1 1 5D4EF5E2
P 9000 1550
F 0 "D1" H 9550 1550 50  0000 C CNN
F 1 "1N4148" H 9750 1550 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9000 1375 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9000 1550 50  0001 C CNN
	1    9000 1550
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D2
U 1 1 5D4F0B1F
P 9000 1650
F 0 "D2" H 9550 1650 50  0000 C CNN
F 1 "1N4148" H 9750 1650 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9000 1475 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9000 1650 50  0001 C CNN
	1    9000 1650
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D3
U 1 1 5D4F510C
P 9000 1750
F 0 "D3" H 9550 1750 50  0000 C CNN
F 1 "1N4148" H 9750 1750 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9000 1575 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9000 1750 50  0001 C CNN
	1    9000 1750
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D4
U 1 1 5D4F5116
P 9000 1850
F 0 "D4" H 9550 1850 50  0000 C CNN
F 1 "1N4148" H 9750 1850 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9000 1675 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9000 1850 50  0001 C CNN
	1    9000 1850
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D5
U 1 1 5D4FEC6F
P 9000 1950
F 0 "D5" H 9550 1950 50  0000 C CNN
F 1 "1N4148" H 9750 1950 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9000 1775 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9000 1950 50  0001 C CNN
	1    9000 1950
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x08 J3
U 1 1 5D5039FC
P 8300 4550
F 0 "J3" H 8300 3950 50  0000 L CNN
F 1 "Conn_01x08" H 8100 3800 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical" H 8300 4550 50  0001 C CNN
F 3 "~" H 8300 4550 50  0001 C CNN
	1    8300 4550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0101
U 1 1 5D50CCAA
P 6600 5550
F 0 "#PWR0101" H 6600 5300 50  0001 C CNN
F 1 "GND" H 6605 5377 50  0000 C CNN
F 2 "" H 6600 5550 50  0001 C CNN
F 3 "" H 6600 5550 50  0001 C CNN
	1    6600 5550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0102
U 1 1 5D50D1ED
P 6650 2850
F 0 "#PWR0102" H 6650 2600 50  0001 C CNN
F 1 "GND" H 6655 2677 50  0000 C CNN
F 2 "" H 6650 2850 50  0001 C CNN
F 3 "" H 6650 2850 50  0001 C CNN
	1    6650 2850
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0103
U 1 1 5D510657
P 6600 3500
F 0 "#PWR0103" H 6600 3350 50  0001 C CNN
F 1 "+5V" H 6615 3673 50  0000 C CNN
F 2 "" H 6600 3500 50  0001 C CNN
F 3 "" H 6600 3500 50  0001 C CNN
	1    6600 3500
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0104
U 1 1 5D51111A
P 6650 1250
F 0 "#PWR0104" H 6650 1100 50  0001 C CNN
F 1 "+5V" H 6665 1423 50  0000 C CNN
F 2 "" H 6650 1250 50  0001 C CNN
F 3 "" H 6650 1250 50  0001 C CNN
	1    6650 1250
	1    0    0    -1  
$EndComp
Text GLabel 6100 4250 0    50   3State ~ 0
D0
Text GLabel 6100 4350 0    50   3State ~ 0
D1
Text GLabel 6100 4450 0    50   3State ~ 0
D2
Text GLabel 6100 4550 0    50   3State ~ 0
D3
Text GLabel 6100 4650 0    50   3State ~ 0
D4
Text GLabel 6100 4750 0    50   3State ~ 0
D5
Text GLabel 6100 4850 0    50   3State ~ 0
D6
Text GLabel 6100 4950 0    50   3State ~ 0
D7
Text GLabel 3900 1950 0    50   Input ~ 0
A3
Text GLabel 3900 1850 0    50   Input ~ 0
A4
Text GLabel 3900 1750 0    50   Input ~ 0
A5
Text GLabel 3900 1650 0    50   Input ~ 0
A6
Text GLabel 3900 1550 0    50   Input ~ 0
A7
$Comp
L power:GND #PWR0105
U 1 1 5D5B6349
P 4400 4050
F 0 "#PWR0105" H 4400 3800 50  0001 C CNN
F 1 "GND" H 4405 3877 50  0000 C CNN
F 2 "" H 4400 4050 50  0001 C CNN
F 3 "" H 4400 4050 50  0001 C CNN
	1    4400 4050
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Network07 RN1
U 1 1 5D5B945C
P 3200 1450
F 0 "RN1" H 3488 1496 50  0000 L CNN
F 1 "10K" H 3488 1405 50  0000 L CNN
F 2 "Resistor_THT:R_Array_SIP8" V 3675 1450 50  0001 C CNN
F 3 "http://www.vishay.com/docs/31509/csc.pdf" H 3200 1450 50  0001 C CNN
	1    3200 1450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3300 1650 3300 2450
Wire Wire Line
	3300 2450 3900 2450
Wire Wire Line
	3200 2550 3900 2550
Wire Wire Line
	3100 2650 3900 2650
Wire Wire Line
	3000 1650 3000 2750
Wire Wire Line
	3000 2750 3900 2750
Wire Wire Line
	2900 1650 2900 2850
Wire Wire Line
	2900 2850 3900 2850
Wire Wire Line
	2900 2850 2900 3550
Connection ~ 2900 2850
Wire Wire Line
	3000 2750 3000 3550
Connection ~ 3000 2750
Wire Wire Line
	3100 2650 3100 3550
Wire Wire Line
	3200 2550 3200 3550
Wire Wire Line
	7100 4250 7250 4250
Wire Wire Line
	7100 4350 7350 4350
Wire Wire Line
	7100 4450 7450 4450
Wire Wire Line
	6600 3500 6600 3650
Wire Wire Line
	7100 4650 7650 4650
Wire Wire Line
	7100 4750 7750 4750
Wire Wire Line
	7100 4950 7950 4950
$Comp
L Device:R_Network08 RN2
U 1 1 5D844D37
P 7650 3850
F 0 "RN2" H 8038 3896 50  0000 L CNN
F 1 "10K" H 8038 3805 50  0000 L CNN
F 2 "Resistor_THT:R_Array_SIP9" V 8125 3850 50  0001 C CNN
F 3 "http://www.vishay.com/docs/31509/csc.pdf" H 7650 3850 50  0001 C CNN
	1    7650 3850
	1    0    0    -1  
$EndComp
Wire Wire Line
	7250 3650 6600 3650
Connection ~ 6600 3650
Wire Wire Line
	6600 3650 6600 3950
Wire Wire Line
	7250 4050 7250 4250
Wire Wire Line
	7350 4050 7350 4350
Wire Wire Line
	7450 4050 7450 4450
Wire Wire Line
	7550 4050 7550 4550
Wire Wire Line
	7650 4050 7650 4650
Wire Wire Line
	7750 4050 7750 4750
Wire Wire Line
	7850 4050 7850 4850
Wire Wire Line
	7950 4050 7950 4950
NoConn ~ 10250 8250
$Comp
L power:+5V #PWR0106
U 1 1 5D89FB88
P 3650 6100
F 0 "#PWR0106" H 3650 5950 50  0001 C CNN
F 1 "+5V" H 3665 6273 50  0000 C CNN
F 2 "" H 3650 6100 50  0001 C CNN
F 3 "" H 3650 6100 50  0001 C CNN
	1    3650 6100
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0107
U 1 1 5D8A0D08
P 3650 6850
F 0 "#PWR0107" H 3650 6600 50  0001 C CNN
F 1 "GND" H 3655 6677 50  0000 C CNN
F 2 "" H 3650 6850 50  0001 C CNN
F 3 "" H 3650 6850 50  0001 C CNN
	1    3650 6850
	1    0    0    -1  
$EndComp
$Comp
L Device:C C1
U 1 1 5D8A3005
P 3050 6450
F 0 "C1" H 3165 6496 50  0000 L CNN
F 1 "0.1uF" H 3165 6405 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 3088 6300 50  0001 C CNN
F 3 "~" H 3050 6450 50  0001 C CNN
	1    3050 6450
	1    0    0    -1  
$EndComp
$Comp
L Device:C C2
U 1 1 5D8A37F2
P 3350 6450
F 0 "C2" H 3465 6496 50  0000 L CNN
F 1 "0.1uF" H 3465 6405 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 3388 6300 50  0001 C CNN
F 3 "~" H 3350 6450 50  0001 C CNN
	1    3350 6450
	1    0    0    -1  
$EndComp
$Comp
L Device:C C3
U 1 1 5D8A3FED
P 3650 6450
F 0 "C3" H 3765 6496 50  0000 L CNN
F 1 "0.1uF" H 3765 6405 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 3688 6300 50  0001 C CNN
F 3 "~" H 3650 6450 50  0001 C CNN
	1    3650 6450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 6100 3650 6300
Connection ~ 3050 6300
Wire Wire Line
	3050 6300 3200 6300
Connection ~ 3350 6300
Wire Wire Line
	3350 6300 3650 6300
Connection ~ 3650 6300
Connection ~ 3050 6600
Wire Wire Line
	3050 6600 3200 6600
Connection ~ 3350 6600
Wire Wire Line
	3350 6600 3650 6600
Connection ~ 3650 6600
NoConn ~ 900  4800
NoConn ~ 900  4900
NoConn ~ 900  5000
NoConn ~ 900  5100
NoConn ~ 900  5200
NoConn ~ 900  5300
NoConn ~ 900  3300
NoConn ~ 900  3400
NoConn ~ 900  3500
NoConn ~ 900  3600
$Comp
L power:+5V #PWR0108
U 1 1 5D9804D0
P 4400 1250
F 0 "#PWR0108" H 4400 1100 50  0001 C CNN
F 1 "+5V" H 4415 1423 50  0000 C CNN
F 2 "" H 4400 1250 50  0001 C CNN
F 3 "" H 4400 1250 50  0001 C CNN
	1    4400 1250
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0109
U 1 1 5D981FCF
P 2900 1250
F 0 "#PWR0109" H 2900 1100 50  0001 C CNN
F 1 "+5V" H 2915 1423 50  0000 C CNN
F 2 "" H 2900 1250 50  0001 C CNN
F 3 "" H 2900 1250 50  0001 C CNN
	1    2900 1250
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 6600 3650 6850
Text GLabel 2450 6300 0    50   Input ~ 0
VCC
Text GLabel 2450 6600 0    50   Input ~ 0
GND
$Comp
L power:PWR_FLAG #FLG0101
U 1 1 5D9A5302
P 3200 6300
F 0 "#FLG0101" H 3200 6375 50  0001 C CNN
F 1 "PWR_FLAG" H 3200 6473 50  0000 C CNN
F 2 "" H 3200 6300 50  0001 C CNN
F 3 "~" H 3200 6300 50  0001 C CNN
	1    3200 6300
	1    0    0    -1  
$EndComp
Connection ~ 3200 6300
Wire Wire Line
	3200 6300 3350 6300
$Comp
L power:PWR_FLAG #FLG0102
U 1 1 5D9A5C4D
P 3200 6600
F 0 "#FLG0102" H 3200 6675 50  0001 C CNN
F 1 "PWR_FLAG" H 3200 6773 50  0000 C CNN
F 2 "" H 3200 6600 50  0001 C CNN
F 3 "~" H 3200 6600 50  0001 C CNN
	1    3200 6600
	-1   0    0    1   
$EndComp
Connection ~ 3200 6600
Wire Wire Line
	3200 6600 3350 6600
Wire Wire Line
	8100 4950 7950 4950
Connection ~ 7950 4950
Wire Wire Line
	7100 4850 7850 4850
Connection ~ 7850 4850
Wire Wire Line
	7850 4850 8100 4850
Wire Wire Line
	8100 4750 7750 4750
Connection ~ 7750 4750
Wire Wire Line
	7100 4550 7550 4550
Wire Wire Line
	8100 4650 7650 4650
Connection ~ 7650 4650
Wire Wire Line
	8100 4550 7550 4550
Connection ~ 7550 4550
Wire Wire Line
	8100 4450 7450 4450
Connection ~ 7450 4450
Wire Wire Line
	8100 4350 7350 4350
Connection ~ 7350 4350
Wire Wire Line
	8100 4250 7250 4250
Connection ~ 7250 4250
$Comp
L Diode:1N4148 D6
U 1 1 5D4FEC79
P 9000 2050
F 0 "D6" H 9550 2050 50  0000 C CNN
F 1 "1N4148" H 9750 2050 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9000 1875 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9000 2050 50  0001 C CNN
	1    9000 2050
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D7
U 1 1 5D4FEC83
P 9000 2150
F 0 "D7" H 9550 2150 50  0000 C CNN
F 1 "1N4148" H 9750 2150 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9000 1975 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9000 2150 50  0001 C CNN
	1    9000 2150
	1    0    0    -1  
$EndComp
$Comp
L Diode:1N4148 D8
U 1 1 5D4FEC8D
P 9000 2250
F 0 "D8" H 9550 2250 50  0000 C CNN
F 1 "1N4148" H 9750 2250 50  0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 9000 2075 50  0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 9000 2250 50  0001 C CNN
	1    9000 2250
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x05 J5
U 1 1 5D506A26
P 9350 2050
F 0 "J5" H 9300 1600 50  0000 L CNN
F 1 "Conn_01x05" H 9150 1700 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical" H 9350 2050 50  0001 C CNN
F 3 "~" H 9350 2050 50  0001 C CNN
	1    9350 2050
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x03 J2
U 1 1 5D82C5C5
P 9350 1650
F 0 "J2" H 9300 2050 50  0000 L CNN
F 1 "Conn_01x03" H 9150 1950 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical" H 9350 1650 50  0001 C CNN
F 3 "~" H 9350 1650 50  0001 C CNN
	1    9350 1650
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS245 U2
U 1 1 5DBF68E7
P 6650 2050
F 0 "U2" H 6250 2900 50  0000 C CNN
F 1 "74HCT245" H 6250 2800 50  0000 C CNN
F 2 "Package_DIP:DIP-20_W7.62mm" H 6650 2050 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS245" H 6650 2050 50  0001 C CNN
	1    6650 2050
	-1   0    0    -1  
$EndComp
Text GLabel 3900 2050 0    50   Input ~ 0
M1
Text GLabel 3900 2150 0    50   Input ~ 0
A2
Connection ~ 3300 2450
Wire Wire Line
	3300 2450 3300 3550
Connection ~ 3200 2550
Wire Wire Line
	3200 1650 3200 2550
Connection ~ 3100 2650
Wire Wire Line
	3100 1650 3100 2650
Text GLabel 900  1400 2    50   Output ~ 0
A15
Text GLabel 900  1500 2    50   Output ~ 0
A14
Text GLabel 900  1600 2    50   Output ~ 0
A13
Text GLabel 900  1700 2    50   Output ~ 0
A12
Text GLabel 900  1800 2    50   Output ~ 0
A11
NoConn ~ 900  3700
Wire Wire Line
	4900 1550 5750 1550
Wire Wire Line
	5750 1550 5750 3200
Wire Wire Line
	5750 5250 6100 5250
Wire Wire Line
	7150 2550 7150 3200
Wire Wire Line
	7150 3200 5750 3200
Connection ~ 5750 3200
Wire Wire Line
	5750 3200 5750 5250
Wire Wire Line
	2450 6300 3050 6300
Wire Wire Line
	2450 6600 3050 6600
$Comp
L Connector_Generic:Conn_01x40 J1
U 1 1 5D4D81A3
P 700 3300
F 0 "J1" H 618 5417 50  0000 C CNN
F 1 "Conn_01x40" H 618 5326 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x40_P2.54mm_Horizontal" H 700 3300 50  0001 C CNN
F 3 "~" H 700 3300 50  0001 C CNN
	1    700  3300
	-1   0    0    -1  
$EndComp
$Comp
L power:GND #PWR0110
U 1 1 5DC7899D
P 7350 2700
F 0 "#PWR0110" H 7350 2450 50  0001 C CNN
F 1 "GND" H 7355 2527 50  0000 C CNN
F 2 "" H 7350 2700 50  0001 C CNN
F 3 "" H 7350 2700 50  0001 C CNN
	1    7350 2700
	1    0    0    -1  
$EndComp
Wire Wire Line
	7150 2450 7350 2450
Wire Wire Line
	7350 2450 7350 2700
NoConn ~ 900  2800
NoConn ~ 900  2900
$Comp
L power:GND #PWR0111
U 1 1 5DC86934
P 5900 5550
F 0 "#PWR0111" H 5900 5300 50  0001 C CNN
F 1 "GND" H 5905 5377 50  0000 C CNN
F 2 "" H 5900 5550 50  0001 C CNN
F 3 "" H 5900 5550 50  0001 C CNN
	1    5900 5550
	1    0    0    -1  
$EndComp
Wire Wire Line
	6100 5150 5900 5150
Wire Wire Line
	5900 5150 5900 5550
Text GLabel 7150 1550 2    50   Output ~ 0
KB0
Text GLabel 7150 1650 2    50   Output ~ 0
KB1
Text GLabel 7150 1750 2    50   Output ~ 0
KB2
Text GLabel 7150 1850 2    50   Output ~ 0
KB3
Text GLabel 7150 1950 2    50   Output ~ 0
KB4
Text GLabel 7150 2050 2    50   Output ~ 0
KB5
Text GLabel 7150 2150 2    50   Output ~ 0
KB6
Text GLabel 7150 2250 2    50   Output ~ 0
KB7
Text GLabel 8850 1550 0    50   Input ~ 0
KB7
Text GLabel 8850 1650 0    50   Input ~ 0
KB6
Text GLabel 8850 1750 0    50   Input ~ 0
KB5
Text GLabel 8850 1850 0    50   Input ~ 0
KB4
Text GLabel 8850 1950 0    50   Input ~ 0
KB3
Text GLabel 8850 2050 0    50   Input ~ 0
KB2
Text GLabel 8850 2150 0    50   Input ~ 0
KB1
Text GLabel 8850 2250 0    50   Input ~ 0
KB0
Wire Wire Line
	3500 1650 3500 2950
Wire Wire Line
	3500 2950 3900 2950
Wire Wire Line
	2900 4050 3000 4050
$Comp
L Connector_Generic:Conn_02x06_Odd_Even J4
U 1 1 5D554073
P 3200 3750
F 0 "J4" V 3204 4030 50  0000 L CNN
F 1 "Conn_02x06_Odd_Even" V 3295 4030 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical" H 3200 3750 50  0001 C CNN
F 3 "~" H 3200 3750 50  0001 C CNN
	1    3200 3750
	0    1    1    0   
$EndComp
$Comp
L 74xx:74LS688 U1
U 1 1 5D5AF916
P 4400 2450
F 0 "U1" H 4944 2496 50  0000 L CNN
F 1 "74HCT688" H 4944 2405 50  0000 L CNN
F 2 "Package_DIP:DIP-20_W7.62mm" H 4400 2450 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS688" H 4400 2450 50  0001 C CNN
	1    4400 2450
	1    0    0    -1  
$EndComp
Text GLabel 3900 2250 0    50   Input ~ 0
IORQ
Text GLabel 3900 3350 0    50   Input ~ 0
RD
Wire Wire Line
	4400 4050 4400 4000
Wire Wire Line
	3900 3050 3400 3050
Connection ~ 3400 3050
Wire Wire Line
	3400 3050 3400 1650
Wire Wire Line
	3400 3050 3400 3550
Wire Wire Line
	3900 3150 3650 3150
Wire Wire Line
	3650 3150 3650 3700
Wire Wire Line
	3650 3700 4400 3700
Connection ~ 4400 3700
Wire Wire Line
	4400 3700 4400 3650
Wire Wire Line
	3000 4050 3100 4050
Wire Wire Line
	4400 4050 4400 4000
Connection ~ 3000 4050
Connection ~ 4400 4050
Connection ~ 3100 4050
Wire Wire Line
	3100 4050 3200 4050
Connection ~ 3200 4050
Wire Wire Line
	3200 4050 3300 4050
Connection ~ 3300 4050
Wire Wire Line
	3300 4050 3400 4050
Connection ~ 3400 4050
Wire Wire Line
	3400 4050 4400 4050
Connection ~ 4400 4000
Wire Wire Line
	4400 4000 4400 3700
Text GLabel 900  2700 2    50   Output ~ 0
A2
$EndSCHEMATC
