EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr USLedger 17000 11000
encoding utf-8
Sheet 1 1
Title "Apple II I/O RPi"
Date "2020-11-02"
Rev "0.1"
Comp "Terence J. Boldt"
Comment1 "Initial draft desgn"
Comment2 "Provides storage and network for the Apple ]["
Comment3 "Raspberry Pi Zero W as a daughter board"
Comment4 "Expansion card for Apple ][ computers"
$EndDescr
$Comp
L Connector_Generic:Conn_02x25_Counter_Clockwise J?
U 1 1 5FA0A8C3
P 3000 2700
F 0 "J?" H 3050 4117 50  0000 C CNN
F 1 "Apple II Expansion Bus" H 3050 4026 50  0000 C CNN
F 2 "" H 3000 2700 50  0001 C CNN
F 3 "~" H 3000 2700 50  0001 C CNN
	1    3000 2700
	1    0    0    -1  
$EndComp
$Comp
L Memory_EPROM:2764 U?
U 1 1 5FA0EF8B
P 5950 6400
F 0 "U?" H 5950 7581 50  0000 C CNN
F 1 "2764" H 5950 7490 50  0000 C CNN
F 2 "Package_DIP:DIP-28_W15.24mm" H 5950 6400 50  0001 C CNN
F 3 "https://downloads.reactivemicro.com/Electronics/ROM/2764%20EPROM.pdf" H 5950 6400 50  0001 C CNN
	1    5950 6400
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS245 U?
U 1 1 5FA15F43
P 4850 2100
F 0 "U?" H 4850 3081 50  0000 C CNN
F 1 "74LS245" H 4850 2990 50  0000 C CNN
F 2 "" H 4850 2100 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS245" H 4850 2100 50  0001 C CNN
	1    4850 2100
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS245 U?
U 1 1 5FA19168
P 9100 2100
F 0 "U?" H 9100 3081 50  0000 C CNN
F 1 "74LS245" H 9100 2990 50  0000 C CNN
F 2 "" H 9100 2100 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS245" H 9100 2100 50  0001 C CNN
	1    9100 2100
	1    0    0    -1  
$EndComp
$Comp
L Connector:Raspberry_Pi_2_3 J?
U 1 1 5FA19C2C
P 13050 2550
F 0 "J?" H 13050 4031 50  0000 C CNN
F 1 "Raspberry_Pi_2_3" H 13050 3940 50  0000 C CNN
F 2 "" H 13050 2550 50  0001 C CNN
F 3 "https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/rpi_SCH_3bplus_1p0_reduced.pdf" H 13050 2550 50  0001 C CNN
	1    13050 2550
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS374 U?
U 1 1 5FA1EB22
P 9100 4100
F 0 "U?" H 9100 5081 50  0000 C CNN
F 1 "74LS374" H 9100 4990 50  0000 C CNN
F 2 "" H 9100 4100 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS374" H 9100 4100 50  0001 C CNN
	1    9100 4100
	1    0    0    -1  
$EndComp
Wire Wire Line
	4350 1600 3300 1600
Wire Wire Line
	4350 1700 3300 1700
Wire Wire Line
	4350 1800 3300 1800
Wire Wire Line
	3300 1900 4350 1900
Wire Wire Line
	4350 2000 3300 2000
Wire Wire Line
	3300 2100 4350 2100
Wire Wire Line
	4350 2200 3300 2200
Wire Wire Line
	3300 2300 4350 2300
Wire Wire Line
	5350 1600 6350 1600
Wire Wire Line
	5350 1700 6400 1700
Wire Wire Line
	8600 1800 8000 1800
Wire Wire Line
	5350 1900 6500 1900
Wire Wire Line
	5350 2000 6550 2000
Wire Wire Line
	8600 2100 7850 2100
Wire Wire Line
	5350 2200 6650 2200
Wire Wire Line
	8600 2300 7750 2300
Wire Wire Line
	8100 1600 8100 3600
Wire Wire Line
	8100 3600 8600 3600
Connection ~ 8100 1600
Wire Wire Line
	8100 1600 8600 1600
Wire Wire Line
	8050 1700 8050 3700
Wire Wire Line
	8050 3700 8600 3700
Connection ~ 8050 1700
Wire Wire Line
	8050 1700 8600 1700
Wire Wire Line
	8000 1800 8000 3800
Wire Wire Line
	8000 3800 8600 3800
Connection ~ 8000 1800
Wire Wire Line
	8000 1800 6450 1800
Wire Wire Line
	7950 1900 7950 3900
Wire Wire Line
	7950 3900 8600 3900
Connection ~ 7950 1900
Wire Wire Line
	7950 1900 8600 1900
Wire Wire Line
	7900 2000 7900 4000
Wire Wire Line
	7900 4000 8600 4000
Connection ~ 7900 2000
Wire Wire Line
	7900 2000 8600 2000
Wire Wire Line
	7850 2100 7850 4100
Wire Wire Line
	7850 4100 8600 4100
Connection ~ 7850 2100
Wire Wire Line
	7850 2100 6600 2100
Wire Wire Line
	7800 2200 7800 4200
Wire Wire Line
	7800 4200 8600 4200
Connection ~ 7800 2200
Wire Wire Line
	7800 2200 8600 2200
Wire Wire Line
	7750 2300 7750 4300
Wire Wire Line
	7750 4300 8600 4300
Connection ~ 7750 2300
Wire Wire Line
	7750 2300 6700 2300
Wire Wire Line
	6350 5600 6350 1600
Connection ~ 6350 1600
Wire Wire Line
	6350 1600 8100 1600
Wire Wire Line
	6400 1700 6400 5700
Wire Wire Line
	6400 5700 6350 5700
Connection ~ 6400 1700
Wire Wire Line
	6400 1700 8050 1700
Wire Wire Line
	6450 5800 6350 5800
Wire Wire Line
	6450 1800 6450 5800
Connection ~ 6450 1800
Wire Wire Line
	6450 1800 5350 1800
Wire Wire Line
	6500 1900 6500 5900
Wire Wire Line
	6500 5900 6350 5900
Connection ~ 6500 1900
Wire Wire Line
	6500 1900 7950 1900
Wire Wire Line
	6350 6000 6550 6000
Wire Wire Line
	6550 6000 6550 2000
Connection ~ 6550 2000
Wire Wire Line
	6550 2000 7900 2000
Wire Wire Line
	6600 2100 6600 6100
Wire Wire Line
	6600 6100 6350 6100
Connection ~ 6600 2100
Wire Wire Line
	6600 2100 5350 2100
Wire Wire Line
	6350 6200 6650 6200
Wire Wire Line
	6650 6200 6650 2200
Connection ~ 6650 2200
Wire Wire Line
	6650 2200 7800 2200
Wire Wire Line
	6700 2300 6700 6300
Wire Wire Line
	6700 6300 6350 6300
Connection ~ 6700 2300
Wire Wire Line
	6700 2300 5350 2300
Wire Wire Line
	5550 5600 2650 5600
Wire Wire Line
	2650 5600 2650 4550
Wire Wire Line
	2650 1600 2800 1600
Wire Wire Line
	2800 1700 2600 1700
Wire Wire Line
	2600 1700 2600 5050
Wire Wire Line
	2600 5700 5550 5700
Wire Wire Line
	5550 5800 2550 5800
Wire Wire Line
	2550 5800 2550 1800
Wire Wire Line
	2550 1800 2800 1800
Wire Wire Line
	2800 1900 2500 1900
Wire Wire Line
	2500 1900 2500 5900
Wire Wire Line
	2500 5900 5550 5900
Wire Wire Line
	2800 2000 2450 2000
Wire Wire Line
	2450 2000 2450 6000
Wire Wire Line
	2450 6000 5550 6000
Wire Wire Line
	5550 6100 2400 6100
Wire Wire Line
	2400 6100 2400 2100
Wire Wire Line
	2400 2100 2800 2100
Wire Wire Line
	2800 2200 2350 2200
Wire Wire Line
	2350 2200 2350 6200
Wire Wire Line
	2350 6200 5550 6200
Wire Wire Line
	5550 6300 2300 6300
Wire Wire Line
	2300 6300 2300 2300
Wire Wire Line
	2300 2300 2800 2300
Wire Wire Line
	5550 6400 2250 6400
Wire Wire Line
	2250 6400 2250 2400
Wire Wire Line
	2250 2400 2800 2400
Wire Wire Line
	2800 2500 2200 2500
Wire Wire Line
	2200 2500 2200 6500
Wire Wire Line
	2200 6500 5550 6500
Wire Wire Line
	5550 6600 2150 6600
Wire Wire Line
	2150 6600 2150 2600
Wire Wire Line
	2150 2600 2800 2600
Wire Wire Line
	2800 1500 2700 1500
Wire Wire Line
	2700 1500 2700 4100
Wire Wire Line
	2700 7200 5400 7200
Wire Wire Line
	5550 7300 5400 7300
Wire Wire Line
	5400 7300 5400 7200
Connection ~ 5400 7200
Wire Wire Line
	5400 7200 5550 7200
Wire Wire Line
	5400 7100 5400 7000
Wire Wire Line
	5400 7000 5550 7000
Wire Wire Line
	5400 7100 5550 7100
Wire Wire Line
	5400 7000 5400 5400
Wire Wire Line
	5400 5400 5950 5400
Connection ~ 5400 7000
Wire Wire Line
	2800 3900 2800 5400
Wire Wire Line
	2800 5400 5400 5400
Connection ~ 5400 5400
Wire Wire Line
	3300 3900 3300 7500
Wire Wire Line
	3300 7500 5950 7500
Wire Wire Line
	5400 1300 4850 1300
Wire Wire Line
	5400 1300 9100 1300
Connection ~ 5400 1300
Wire Wire Line
	9100 3300 5400 3300
Wire Wire Line
	5400 1300 5400 3300
Connection ~ 5400 3300
Wire Wire Line
	5400 3300 5400 5400
Wire Wire Line
	5950 7500 8300 7500
Wire Wire Line
	8300 7500 8300 4900
Wire Wire Line
	8300 4900 9100 4900
Connection ~ 5950 7500
Wire Wire Line
	8300 4900 8300 4600
Wire Wire Line
	8300 2900 9100 2900
Connection ~ 8300 4900
Wire Wire Line
	8600 2500 8300 2500
Wire Wire Line
	8300 2500 8300 2900
Connection ~ 8300 2900
Wire Wire Line
	8600 4600 8300 4600
Connection ~ 8300 4600
Wire Wire Line
	8300 4600 8300 2900
Wire Wire Line
	12950 1250 12850 1250
Connection ~ 12850 1250
Connection ~ 9100 1300
Wire Wire Line
	9100 2900 10650 2900
Wire Wire Line
	10650 2900 10650 3850
Wire Wire Line
	10650 3850 12650 3850
Connection ~ 9100 2900
Wire Wire Line
	12650 3850 12750 3850
Connection ~ 12650 3850
Wire Wire Line
	12750 3850 12850 3850
Connection ~ 12750 3850
Wire Wire Line
	12850 3850 12950 3850
Connection ~ 12850 3850
Wire Wire Line
	12950 3850 13050 3850
Connection ~ 12950 3850
Wire Wire Line
	13050 3850 13150 3850
Connection ~ 13050 3850
Wire Wire Line
	13150 3850 13250 3850
Connection ~ 13150 3850
Wire Wire Line
	13250 3850 13350 3850
Connection ~ 13250 3850
Connection ~ 3300 3900
Wire Wire Line
	13850 2250 14100 2250
Wire Wire Line
	14100 2250 14100 1100
Wire Wire Line
	14100 1100 9600 1100
Wire Wire Line
	9600 1100 9600 1600
Wire Wire Line
	10700 2050 10700 1700
Wire Wire Line
	10700 1700 9600 1700
Wire Wire Line
	12250 3250 10750 3250
Wire Wire Line
	10750 3250 10750 1800
Wire Wire Line
	10750 1800 9600 1800
Wire Wire Line
	12250 2750 10800 2750
Wire Wire Line
	10800 2750 10800 1900
Wire Wire Line
	10800 1900 9600 1900
Wire Wire Line
	12250 2050 10700 2050
Wire Wire Line
	13850 2950 14150 2950
Wire Wire Line
	14150 2950 14150 900 
Wire Wire Line
	14150 900  9750 900 
Wire Wire Line
	9750 900  9750 2000
Wire Wire Line
	9750 2000 9600 2000
Wire Wire Line
	13850 2850 14200 2850
Wire Wire Line
	14200 2850 14200 850 
Wire Wire Line
	14200 850  9800 850 
Wire Wire Line
	9800 850  9800 2100
Wire Wire Line
	9800 2100 9600 2100
Wire Wire Line
	13850 3050 14250 3050
Wire Wire Line
	14250 3050 14250 800 
Wire Wire Line
	14250 800  9850 800 
Wire Wire Line
	9850 800  9850 2200
Wire Wire Line
	9850 2200 9600 2200
Wire Wire Line
	13850 2350 14300 2350
Wire Wire Line
	14300 2350 14300 750 
Wire Wire Line
	14300 750  9900 750 
Wire Wire Line
	9900 750  9900 2300
Wire Wire Line
	9900 2300 9600 2300
Wire Wire Line
	9100 1250 9100 1300
Wire Wire Line
	9100 1250 12850 1250
Wire Wire Line
	13850 2450 14300 2450
Wire Wire Line
	14300 2450 14300 4000
Wire Wire Line
	14300 4000 10500 4000
Wire Wire Line
	10500 4000 10500 3600
Wire Wire Line
	10500 3600 10250 3600
Wire Wire Line
	9600 3700 10200 3700
Wire Wire Line
	10450 3700 10450 4050
Wire Wire Line
	10450 4050 14000 4050
Wire Wire Line
	14000 4050 14000 3350
Wire Wire Line
	14000 3350 13850 3350
Wire Wire Line
	10850 2350 10850 3800
Wire Wire Line
	10850 3800 10150 3800
Wire Wire Line
	10850 2350 12250 2350
Wire Wire Line
	12250 3150 10900 3150
Wire Wire Line
	10900 3150 10900 3900
Wire Wire Line
	10900 3900 10100 3900
Wire Wire Line
	9600 4000 10050 4000
Wire Wire Line
	10400 2550 12250 2550
Wire Wire Line
	10400 2550 10400 4000
Wire Wire Line
	12250 2450 10350 2450
Wire Wire Line
	10350 2450 10350 4100
Wire Wire Line
	10350 4100 10000 4100
Wire Wire Line
	12250 1950 10300 1950
Wire Wire Line
	10300 1950 10300 4200
Wire Wire Line
	10300 4200 9950 4200
Wire Wire Line
	13850 3250 14050 3250
Wire Wire Line
	14050 3250 14050 4300
Wire Wire Line
	14050 4300 9900 4300
$Comp
L Device:R R?
U 1 1 5FA241D5
P 10050 5450
F 0 "R?" H 10120 5496 50  0000 L CNN
F 1 "R" H 10120 5405 50  0000 L CNN
F 2 "" V 9980 5450 50  0001 C CNN
F 3 "~" H 10050 5450 50  0001 C CNN
	1    10050 5450
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FA246F6
P 10300 5450
F 0 "R?" H 10370 5496 50  0000 L CNN
F 1 "R" H 10370 5405 50  0000 L CNN
F 2 "" V 10230 5450 50  0001 C CNN
F 3 "~" H 10300 5450 50  0001 C CNN
	1    10300 5450
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FA24EB1
P 10550 5450
F 0 "R?" H 10620 5496 50  0000 L CNN
F 1 "R" H 10620 5405 50  0000 L CNN
F 2 "" V 10480 5450 50  0001 C CNN
F 3 "~" H 10550 5450 50  0001 C CNN
	1    10550 5450
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FA253F4
P 10800 5450
F 0 "R?" H 10870 5496 50  0000 L CNN
F 1 "R" H 10870 5405 50  0000 L CNN
F 2 "" V 10730 5450 50  0001 C CNN
F 3 "~" H 10800 5450 50  0001 C CNN
	1    10800 5450
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FA25849
P 11050 5450
F 0 "R?" H 11120 5496 50  0000 L CNN
F 1 "R" H 11120 5405 50  0000 L CNN
F 2 "" V 10980 5450 50  0001 C CNN
F 3 "~" H 11050 5450 50  0001 C CNN
	1    11050 5450
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FA25CA5
P 11300 5450
F 0 "R?" H 11370 5496 50  0000 L CNN
F 1 "R" H 11370 5405 50  0000 L CNN
F 2 "" V 11230 5450 50  0001 C CNN
F 3 "~" H 11300 5450 50  0001 C CNN
	1    11300 5450
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FA2611D
P 11550 5450
F 0 "R?" H 11620 5496 50  0000 L CNN
F 1 "R" H 11620 5405 50  0000 L CNN
F 2 "" V 11480 5450 50  0001 C CNN
F 3 "~" H 11550 5450 50  0001 C CNN
	1    11550 5450
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FA2686B
P 11800 5450
F 0 "R?" H 11870 5496 50  0000 L CNN
F 1 "R" H 11870 5405 50  0000 L CNN
F 2 "" V 11730 5450 50  0001 C CNN
F 3 "~" H 11800 5450 50  0001 C CNN
	1    11800 5450
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FAAFB0D
P 10050 4950
F 0 "R?" H 10120 4996 50  0000 L CNN
F 1 "R" H 10120 4905 50  0000 L CNN
F 2 "" V 9980 4950 50  0001 C CNN
F 3 "~" H 10050 4950 50  0001 C CNN
	1    10050 4950
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FAAFB13
P 10300 4950
F 0 "R?" H 10370 4996 50  0000 L CNN
F 1 "R" H 10370 4905 50  0000 L CNN
F 2 "" V 10230 4950 50  0001 C CNN
F 3 "~" H 10300 4950 50  0001 C CNN
	1    10300 4950
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FAAFB19
P 10550 4950
F 0 "R?" H 10620 4996 50  0000 L CNN
F 1 "R" H 10620 4905 50  0000 L CNN
F 2 "" V 10480 4950 50  0001 C CNN
F 3 "~" H 10550 4950 50  0001 C CNN
	1    10550 4950
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FAAFB1F
P 10800 4950
F 0 "R?" H 10870 4996 50  0000 L CNN
F 1 "R" H 10870 4905 50  0000 L CNN
F 2 "" V 10730 4950 50  0001 C CNN
F 3 "~" H 10800 4950 50  0001 C CNN
	1    10800 4950
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FAAFB25
P 11050 4950
F 0 "R?" H 11120 4996 50  0000 L CNN
F 1 "R" H 11120 4905 50  0000 L CNN
F 2 "" V 10980 4950 50  0001 C CNN
F 3 "~" H 11050 4950 50  0001 C CNN
	1    11050 4950
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FAAFB2B
P 11300 4950
F 0 "R?" H 11370 4996 50  0000 L CNN
F 1 "R" H 11370 4905 50  0000 L CNN
F 2 "" V 11230 4950 50  0001 C CNN
F 3 "~" H 11300 4950 50  0001 C CNN
	1    11300 4950
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FAAFB31
P 11550 4950
F 0 "R?" H 11620 4996 50  0000 L CNN
F 1 "R" H 11620 4905 50  0000 L CNN
F 2 "" V 11480 4950 50  0001 C CNN
F 3 "~" H 11550 4950 50  0001 C CNN
	1    11550 4950
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FAAFB37
P 11800 4950
F 0 "R?" H 11870 4996 50  0000 L CNN
F 1 "R" H 11870 4905 50  0000 L CNN
F 2 "" V 11730 4950 50  0001 C CNN
F 3 "~" H 11800 4950 50  0001 C CNN
	1    11800 4950
	1    0    0    -1  
$EndComp
Wire Wire Line
	9100 3300 10600 3300
Wire Wire Line
	10600 3300 10600 4800
Wire Wire Line
	10600 4800 10550 4800
Connection ~ 9100 3300
Wire Wire Line
	10550 4800 10300 4800
Connection ~ 10550 4800
Wire Wire Line
	10300 4800 10050 4800
Connection ~ 10300 4800
Wire Wire Line
	10600 4800 10800 4800
Wire Wire Line
	10800 4800 11050 4800
Connection ~ 10600 4800
Connection ~ 10800 4800
Wire Wire Line
	11050 4800 11300 4800
Connection ~ 11050 4800
Wire Wire Line
	11300 4800 11550 4800
Connection ~ 11300 4800
Wire Wire Line
	11550 4800 11800 4800
Connection ~ 11550 4800
Wire Wire Line
	9100 4900 9100 5600
Wire Wire Line
	9100 5600 10050 5600
Connection ~ 9100 4900
Wire Wire Line
	10050 5600 10300 5600
Connection ~ 10050 5600
Wire Wire Line
	10300 5600 10550 5600
Connection ~ 10300 5600
Wire Wire Line
	10550 5600 10800 5600
Connection ~ 10550 5600
Wire Wire Line
	10800 5600 11050 5600
Connection ~ 10800 5600
Wire Wire Line
	11300 5600 11050 5600
Connection ~ 11050 5600
Wire Wire Line
	11300 5600 11550 5600
Connection ~ 11300 5600
Wire Wire Line
	11550 5600 11800 5600
Connection ~ 11550 5600
Wire Wire Line
	10050 5200 10050 5100
Wire Wire Line
	10050 5350 10050 5300
Connection ~ 10050 5200
Connection ~ 10050 5300
Wire Wire Line
	10050 5300 10050 5200
Wire Wire Line
	10250 3600 10250 4700
Wire Wire Line
	10250 4700 11700 4700
Wire Wire Line
	11700 4700 11700 5200
Wire Wire Line
	11700 5200 11800 5200
Wire Wire Line
	11800 5200 11800 5100
Connection ~ 10250 3600
Wire Wire Line
	10250 3600 9600 3600
Wire Wire Line
	11800 5300 11800 5200
Connection ~ 11800 5200
Wire Wire Line
	10200 3700 10200 4650
Wire Wire Line
	10200 4650 11450 4650
Wire Wire Line
	11450 4650 11450 5200
Wire Wire Line
	11450 5200 11550 5200
Connection ~ 10200 3700
Wire Wire Line
	10200 3700 10450 3700
Connection ~ 11550 5200
Wire Wire Line
	11550 5200 11550 5300
Wire Wire Line
	11300 5300 11300 5200
Wire Wire Line
	11550 5100 11550 5200
Wire Wire Line
	11050 5100 11050 5200
Wire Wire Line
	10800 5300 10800 5200
Wire Wire Line
	10550 5100 10550 5200
Wire Wire Line
	10300 5300 10300 5200
Wire Wire Line
	11300 5200 11200 5200
Wire Wire Line
	11200 5200 11200 4600
Wire Wire Line
	11200 4600 10150 4600
Wire Wire Line
	10150 4600 10150 3800
Connection ~ 11300 5200
Wire Wire Line
	11300 5200 11300 5100
Connection ~ 10150 3800
Wire Wire Line
	10150 3800 9600 3800
Wire Wire Line
	10100 3900 10100 4550
Wire Wire Line
	10100 4550 10950 4550
Wire Wire Line
	10950 4550 10950 5200
Wire Wire Line
	10950 5200 11050 5200
Connection ~ 10100 3900
Wire Wire Line
	10100 3900 9600 3900
Connection ~ 11050 5200
Wire Wire Line
	11050 5200 11050 5300
Wire Wire Line
	10800 5200 10700 5200
Wire Wire Line
	10700 5200 10700 4500
Wire Wire Line
	10700 4500 10050 4500
Wire Wire Line
	10050 4500 10050 4000
Connection ~ 10800 5200
Wire Wire Line
	10800 5200 10800 5100
Connection ~ 10050 4000
Wire Wire Line
	10050 4000 10400 4000
Wire Wire Line
	10000 4100 10000 4450
Wire Wire Line
	10000 4450 10450 4450
Wire Wire Line
	10450 4450 10450 5200
Wire Wire Line
	10450 5200 10550 5200
Connection ~ 10000 4100
Wire Wire Line
	10000 4100 9600 4100
Connection ~ 10550 5200
Wire Wire Line
	10550 5200 10550 5300
Wire Wire Line
	10300 5200 10200 5200
Wire Wire Line
	10200 5200 10200 4700
Wire Wire Line
	10200 4700 9950 4700
Wire Wire Line
	9950 4700 9950 4200
Connection ~ 10300 5200
Wire Wire Line
	10300 5200 10300 5100
Connection ~ 9950 4200
Wire Wire Line
	9950 4200 9600 4200
Wire Wire Line
	9900 4300 9900 5200
Connection ~ 9900 4300
Wire Wire Line
	9900 4300 9600 4300
Wire Wire Line
	9900 5200 10050 5200
Text Notes 4400 7400 0    50   ~ 0
Enable Firmware EPROM\non IO_SELECT low
Wire Wire Line
	2800 3200 2100 3200
Wire Wire Line
	2100 3200 2100 4300
Wire Wire Line
	4250 4300 4250 2500
Wire Wire Line
	4250 2500 4350 2500
Text Notes 3700 2550 0    50   ~ 0
Direction is\nR/W Inverted
Wire Wire Line
	2650 4550 4500 4550
Wire Wire Line
	5900 2600 7000 2600
Connection ~ 2650 4550
Wire Wire Line
	2650 4550 2650 1600
$Comp
L 74xx:74LS32 U?
U 1 1 5FB50A31
P 7300 2700
F 0 "U?" H 7300 3025 50  0000 C CNN
F 1 "74LS32" H 7300 2934 50  0000 C CNN
F 2 "" H 7300 2700 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS32" H 7300 2700 50  0001 C CNN
	1    7300 2700
	1    0    0    -1  
$EndComp
Wire Wire Line
	3300 2400 3600 2400
Wire Wire Line
	3600 3100 7000 3100
Wire Wire Line
	7000 3100 7000 2800
Wire Wire Line
	7600 2700 8400 2700
Wire Wire Line
	8600 2700 8600 2600
$Comp
L 74xx:74LS32 U?
U 2 1 5FB9C73F
P 4800 4450
F 0 "U?" H 4800 4775 50  0000 C CNN
F 1 "74LS32" H 4800 4684 50  0000 C CNN
F 2 "" H 4800 4450 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS32" H 4800 4450 50  0001 C CNN
	2    4800 4450
	1    0    0    -1  
$EndComp
Wire Wire Line
	4250 4300 4500 4300
Wire Wire Line
	4500 4300 4500 4350
Connection ~ 4250 4300
Wire Wire Line
	5100 4450 5900 4450
Wire Wire Line
	5900 4450 5900 2600
$Comp
L 74xx:74LS32 U?
U 3 1 5FBF09C5
P 7400 4500
F 0 "U?" H 7400 4825 50  0000 C CNN
F 1 "74LS32" H 7400 4734 50  0000 C CNN
F 2 "" H 7400 4500 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS32" H 7400 4500 50  0001 C CNN
	3    7400 4500
	1    0    0    -1  
$EndComp
Wire Wire Line
	8600 4500 8500 4500
Wire Wire Line
	7000 4400 7100 4400
Wire Wire Line
	7000 3100 7000 4400
Connection ~ 7000 3100
$Comp
L 74xx:74LS32 U?
U 4 1 5FC54438
P 4800 4950
F 0 "U?" H 4800 5275 50  0000 C CNN
F 1 "74LS32" H 4800 5184 50  0000 C CNN
F 2 "" H 4800 4950 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS32" H 4800 4950 50  0001 C CNN
	4    4800 4950
	1    0    0    -1  
$EndComp
Wire Wire Line
	7100 4600 5100 4600
Wire Wire Line
	5100 4600 5100 4950
Wire Wire Line
	4500 5050 2600 5050
Connection ~ 2600 5050
Wire Wire Line
	2600 5050 2600 5700
Text Notes 7600 4950 0    50   ~ 0
Latch Clock on\nR/W low\nA1 low\nDEV_SELECT low
Wire Wire Line
	4400 4850 4500 4850
Wire Wire Line
	4250 4300 4250 4650
Wire Wire Line
	4250 4650 3800 4650
Wire Wire Line
	3800 4650 3800 4750
Wire Wire Line
	2100 4300 3650 4300
Wire Wire Line
	3600 2400 3600 3100
Wire Wire Line
	8500 4500 8500 6000
Wire Wire Line
	8500 6000 14500 6000
Wire Wire Line
	14500 6000 14500 2750
Wire Wire Line
	14500 2750 13850 2750
Connection ~ 8500 4500
Wire Wire Line
	8500 4500 7700 4500
Wire Wire Line
	8400 2700 8400 6100
Wire Wire Line
	8400 6100 14550 6100
Wire Wire Line
	14550 6100 14550 2650
Wire Wire Line
	14550 2650 13850 2650
Connection ~ 8400 2700
Wire Wire Line
	8400 2700 8600 2700
$Comp
L 74xx:74LS00 U?
U 1 1 5FD4E618
P 3850 3500
F 0 "U?" H 3850 3825 50  0000 C CNN
F 1 "74LS00" H 3850 3734 50  0000 C CNN
F 2 "" H 3850 3500 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74ls00" H 3850 3500 50  0001 C CNN
	1    3850 3500
	1    0    0    -1  
$EndComp
Wire Wire Line
	3600 3100 3550 3100
Wire Wire Line
	3550 3100 3550 3400
Connection ~ 3600 3100
$Comp
L 74xx:74LS00 U?
U 2 1 5FD74B7A
P 4650 3500
F 0 "U?" H 4650 3825 50  0000 C CNN
F 1 "74LS00" H 4650 3734 50  0000 C CNN
F 2 "" H 4650 3500 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74ls00" H 4650 3500 50  0001 C CNN
	2    4650 3500
	1    0    0    -1  
$EndComp
Wire Wire Line
	5150 3900 5150 2900
Wire Wire Line
	5150 2900 4850 2900
Wire Wire Line
	3300 3900 5150 3900
Wire Wire Line
	4150 3500 4350 3500
Wire Wire Line
	4350 3500 4350 3400
Wire Wire Line
	4350 3600 4350 3500
Connection ~ 4350 3500
Wire Wire Line
	4950 3500 4950 2950
Wire Wire Line
	4950 2950 4350 2950
Wire Wire Line
	4350 2950 4350 2600
Wire Wire Line
	2700 4100 3550 4100
Wire Wire Line
	3550 4100 3550 3600
Connection ~ 2700 4100
Wire Wire Line
	2700 4100 2700 7200
$Comp
L 74xx:74LS00 U?
U 3 1 5FE27921
P 4100 4850
F 0 "U?" H 4100 5175 50  0000 C CNN
F 1 "74LS00" H 4100 5084 50  0000 C CNN
F 2 "" H 4100 4850 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74ls00" H 4100 4850 50  0001 C CNN
	3    4100 4850
	1    0    0    -1  
$EndComp
Connection ~ 3800 4750
Wire Wire Line
	3800 4750 3800 4950
$Comp
L 74xx:74LS00 U?
U 4 1 5FE48B46
P 3950 4300
F 0 "U?" H 3950 4625 50  0000 C CNN
F 1 "74LS00" H 3950 4534 50  0000 C CNN
F 2 "" H 3950 4300 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74ls00" H 3950 4300 50  0001 C CNN
	4    3950 4300
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 4200 3650 4300
Wire Wire Line
	3650 4300 3650 4400
Connection ~ 3650 4300
Text Notes 8500 3000 0    50   ~ 0
Enable on\nR/W high\nA0 low\nDEV_SELECT low
Text Notes 4150 2950 0    50   ~ 0
Enable on either\nDEV_SELECT low\nIO_SELECT low
$EndSCHEMATC