Apple-2-HW
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ssc
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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A3 16535 11693
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L 65xx:W65C51NxP U5
U 1 1 605A94A7
P 9100 2900
F 0 "U5" H 8750 4200 50 0000 C CNN
F 1 "W65C51NxP" H 9400 4200 50 0000 C CIB
F 2 "Package_DIP:DIP-28_W15.24mm_Socket" H 9100 3050 50 0001 C CNN
F 3 "http://www.westerndesigncenter.com/wdc/documentation/w65c51n.pdf" H 9100 3050 50 0001 C CNN
1 9100 2900
1 0 0 -1
$EndComp
$Comp
L apple2:A2Bus P1
U 1 1 605D5541
P 1900 2700
F 0 "P1" H 1500 4400 60 0000 C CNN
F 1 "A2Bus" H 2250 4400 60 0000 C CNN
F 2 "Apple2-Bus:Male_Card-Edge_50_pin__100_mil" H 1900 2700 60 0001 C CNN
F 3 "https://allpinouts.org/pinouts/connectors/buses/apple-ii-slot/" H 1900 2700 60 0001 C CNN
1 1900 2700
1 0 0 -1
$EndComp
NoConn ~ 1200 3200
NoConn ~ 1200 3300
NoConn ~ 1200 3400
NoConn ~ 1200 2900
NoConn ~ 1800 4600
NoConn ~ 2000 4600
NoConn ~ 2000 900
$Comp
L power:+5V #PWR0101
U 1 1 605E4278
P 1800 800
F 0 "#PWR0101" H 1800 650 50 0001 C CNN
F 1 "+5V" H 1815 973 50 0000 C CNN
F 2 "" H 1800 800 50 0001 C CNN
F 3 "" H 1800 800 50 0001 C CNN
1 1800 800
1 0 0 -1
$EndComp
Wire Wire Line
1800 800 1800 900
$Comp
L power:GND #PWR0102
U 1 1 605E588B
P 1900 4950
F 0 "#PWR0102" H 1900 4700 50 0001 C CNN
F 1 "GND" H 1905 4777 50 0000 C CNN
F 2 "" H 1900 4950 50 0001 C CNN
F 3 "" H 1900 4950 50 0001 C CNN
1 1900 4950
1 0 0 -1
$EndComp
Wire Wire Line
1900 4600 1900 4950
Wire Wire Line
1200 4300 1050 4300
Wire Wire Line
1050 4300 1050 5350
Wire Wire Line
1050 5350 2700 5350
Wire Wire Line
2700 5350 2700 4300
Wire Wire Line
2700 4300 2600 4300
Wire Wire Line
1200 4200 950 4200
Wire Wire Line
950 4200 950 5450
Wire Wire Line
950 5450 2800 5450
Wire Wire Line
2800 5450 2800 4200
Wire Wire Line
2800 4200 2600 4200
Text GLabel 1300 7050 0 50 BiDi ~ 0
D0
Wire Wire Line
1300 7050 1500 7050
Text GLabel 1300 6950 0 50 BiDi ~ 0
D1
Text GLabel 1300 6850 0 50 BiDi ~ 0
D2
Text GLabel 1300 6750 0 50 BiDi ~ 0
D3
Wire Wire Line
1300 6750 1500 6750
Text GLabel 1300 6650 0 50 BiDi ~ 0
D4
Text GLabel 1300 6550 0 50 BiDi ~ 0
D5
Text GLabel 1300 6450 0 50 BiDi ~ 0
D6
Text GLabel 1300 6350 0 50 BiDi ~ 0
D7
Text GLabel 2850 2900 2 50 Output ~ 0
R~W
Wire Wire Line
2600 2900 2850 2900
Text GLabel 3250 3000 2 50 Output ~ 0
~IOSEL
Wire Wire Line
2600 3000 3250 3000
Text GLabel 2850 3100 2 50 Output ~ 0
~IOSTRB
Wire Wire Line
2600 3100 2850 3100
Text GLabel 850 3000 0 50 Input ~ 0
~IRQ
Wire Wire Line
850 3000 1200 3000
NoConn ~ 2600 3500
NoConn ~ 2600 3600
NoConn ~ 2600 3700
NoConn ~ 2600 3900
NoConn ~ 2600 4000
NoConn ~ 2600 2400
NoConn ~ 2600 2500
NoConn ~ 2600 2600
NoConn ~ 2600 2700
Text GLabel 1050 3100 0 50 Output ~ 0
~RES
Wire Wire Line
1050 3100 1200 3100
$Comp
L osc:Osc_8pin U3
U 1 1 6067DEFD
P 2350 9750
F 0 "U3" H 2123 9803 60 0000 R CNN
F 1 "1.8432M" H 2123 9697 60 0000 R CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket" H 2350 9750 60 0001 C CNN
F 3 "" H 2350 9750 60 0001 C CNN
1 2350 9750
1 0 0 -1
$EndComp
$Comp
L Interface_UART:MAX3232 U6
U 1 1 6068F0BA
P 11550 2600
F 0 "U6" H 11050 3700 50 0000 C CNN
F 1 "MAX3232" H 11900 3700 50 0000 C CNN
F 2 "Package_DIP:DIP-16_W7.62mm_Socket" H 11600 1550 50 0001 L CNN
F 3 "https://datasheets.maximintegrated.com/en/ds/MAX3222-MAX3241.pdf" H 11550 2700 50 0001 C CNN
1 11550 2600
1 0 0 -1
$EndComp
NoConn ~ 2600 3800
Text GLabel 8150 1800 0 50 Input ~ 0
~RES
Wire Wire Line
8150 1800 8500 1800
Text GLabel 8150 3100 0 50 Input ~ 0
R~W
Wire Wire Line
8150 3100 8500 3100
Text GLabel 8300 3300 0 50 BiDi ~ 0
D0
Wire Wire Line
8300 3300 8500 3300
Text GLabel 8300 3400 0 50 BiDi ~ 0
D1
Wire Wire Line
8300 3400 8500 3400
Text GLabel 8300 3500 0 50 BiDi ~ 0
D2
Wire Wire Line
8300 3500 8500 3500
Text GLabel 8300 3600 0 50 BiDi ~ 0
D3
Wire Wire Line
8300 3600 8500 3600
Text GLabel 8300 3700 0 50 BiDi ~ 0
D4
Wire Wire Line
8300 3700 8500 3700
Text GLabel 8300 3800 0 50 BiDi ~ 0
D5
Wire Wire Line
8300 3800 8500 3800
Text GLabel 8300 3900 0 50 BiDi ~ 0
D6
Wire Wire Line
8300 3900 8500 3900
Text GLabel 8300 4000 0 50 BiDi ~ 0
D7
Wire Wire Line
8300 4000 8500 4000
Text GLabel 6350 3250 2 50 BiDi ~ 0
D0
Wire Wire Line
6350 3250 6150 3250
Text GLabel 6350 3350 2 50 BiDi ~ 0
D1
Wire Wire Line
6350 3350 6150 3350
Text GLabel 6350 3450 2 50 BiDi ~ 0
D2
Wire Wire Line
6350 3450 6150 3450
Text GLabel 6350 3550 2 50 BiDi ~ 0
D3
Wire Wire Line
6350 3550 6150 3550
Text GLabel 6350 3650 2 50 BiDi ~ 0
D4
Wire Wire Line
6350 3650 6150 3650
Text GLabel 6350 3750 2 50 BiDi ~ 0
D5
Wire Wire Line
6350 3750 6150 3750
Text GLabel 6350 3850 2 50 BiDi ~ 0
D6
Wire Wire Line
6350 3850 6150 3850
Text GLabel 6350 3950 2 50 BiDi ~ 0
D7
Wire Wire Line
6350 3950 6150 3950
$Comp
L power:+5V #PWR0105
U 1 1 606E2D54
P 5750 2950
F 0 "#PWR0105" H 5750 2800 50 0001 C CNN
F 1 "+5V" H 5765 3123 50 0000 C CNN
F 2 "" H 5750 2950 50 0001 C CNN
F 3 "" H 5750 2950 50 0001 C CNN
1 5750 2950
1 0 0 -1
$EndComp
Wire Wire Line
5750 2950 5750 3050
$Comp
L power:+5V #PWR0106
U 1 1 606EF50E
P 11550 1300
F 0 "#PWR0106" H 11550 1150 50 0001 C CNN
F 1 "+5V" H 11565 1473 50 0000 C CNN
F 2 "" H 11550 1300 50 0001 C CNN
F 3 "" H 11550 1300 50 0001 C CNN
1 11550 1300
1 0 0 -1
$EndComp
Wire Wire Line
11550 1300 11550 1400
$Comp
L power:+5V #PWR0107
U 1 1 606F5602
P 2350 9200
F 0 "#PWR0107" H 2350 9050 50 0001 C CNN
F 1 "+5V" H 2365 9373 50 0000 C CNN
F 2 "" H 2350 9200 50 0001 C CNN
F 3 "" H 2350 9200 50 0001 C CNN
1 2350 9200
1 0 0 -1
$EndComp
Wire Wire Line
2350 9200 2350 9250
$Comp
L power:GND #PWR0108
U 1 1 606F7D59
P 2350 10350
F 0 "#PWR0108" H 2350 10100 50 0001 C CNN
F 1 "GND" H 2355 10177 50 0000 C CNN
F 2 "" H 2350 10350 50 0001 C CNN
F 3 "" H 2350 10350 50 0001 C CNN
1 2350 10350
1 0 0 -1
$EndComp
Wire Wire Line
2350 10250 2350 10350
$Comp
L power:GND #PWR0109
U 1 1 606FFC06
P 5750 5600
F 0 "#PWR0109" H 5750 5350 50 0001 C CNN
F 1 "GND" H 5755 5427 50 0000 C CNN
F 2 "" H 5750 5600 50 0001 C CNN
F 3 "" H 5750 5600 50 0001 C CNN
1 5750 5600
1 0 0 -1
$EndComp
Wire Wire Line
5750 5250 5750 5450
Text GLabel 3000 9750 2 50 Output ~ 0
SERCLK
Wire Wire Line
2750 9750 3000 9750
Wire Wire Line
2600 2200 2900 2200
Text GLabel 2900 2200 2 50 Output ~ 0
A10
Wire Wire Line
2600 2100 2900 2100
Text GLabel 2900 2100 2 50 Output ~ 0
A9
Wire Wire Line
2600 2000 2900 2000
Text GLabel 2900 2000 2 50 Output ~ 0
A8
Wire Wire Line
2600 1900 2900 1900
Text GLabel 2900 1900 2 50 Output ~ 0
A7
Wire Wire Line
2600 1800 2900 1800
Text GLabel 2900 1800 2 50 Output ~ 0
A6
Wire Wire Line
2600 1700 2900 1700
Text GLabel 2900 1700 2 50 Output ~ 0
A5
Wire Wire Line
2600 1600 2900 1600
Text GLabel 2900 1600 2 50 Output ~ 0
A4
Wire Wire Line
2600 1500 2900 1500
Text GLabel 2900 1500 2 50 Output ~ 0
A3
Wire Wire Line
2600 1400 2900 1400
Text GLabel 2900 1400 2 50 Output ~ 0
A2
Wire Wire Line
2600 1300 2900 1300
Text GLabel 2900 1300 2 50 Output ~ 0
A1
Wire Wire Line
2600 1200 2900 1200
Text GLabel 2900 1200 2 50 Output ~ 0
A0
Wire Wire Line
5350 4250 5050 4250
Wire Wire Line
5350 4150 5050 4150
Wire Wire Line
5350 4050 5050 4050
Wire Wire Line
5350 3950 5050 3950
Text GLabel 5050 3950 0 50 Input ~ 0
A7
Wire Wire Line
5350 3850 5050 3850
Text GLabel 5050 3850 0 50 Input ~ 0
A6
Wire Wire Line
5350 3750 5050 3750
Text GLabel 5050 3750 0 50 Input ~ 0
A5
Wire Wire Line
5350 3650 5050 3650
Text GLabel 5050 3650 0 50 Input ~ 0
A4
Wire Wire Line
5350 3550 5050 3550
Text GLabel 5050 3550 0 50 Input ~ 0
A3
Wire Wire Line
5350 3450 5050 3450
Text GLabel 5050 3450 0 50 Input ~ 0
A2
Wire Wire Line
5350 3350 5050 3350
Text GLabel 5050 3350 0 50 Input ~ 0
A1
Wire Wire Line
5350 3250 5050 3250
Text GLabel 5050 3250 0 50 Input ~ 0
A0
$Comp
L power:GND #PWR0110
U 1 1 607264AE
P 9100 4400
F 0 "#PWR0110" H 9100 4150 50 0001 C CNN
F 1 "GND" H 9105 4227 50 0000 C CNN
F 2 "" H 9100 4400 50 0001 C CNN
F 3 "" H 9100 4400 50 0001 C CNN
1 9100 4400
1 0 0 -1
$EndComp
Wire Wire Line
9100 4350 9100 4400
$Comp
L power:GND #PWR0111
U 1 1 607292FF
P 11550 3900
F 0 "#PWR0111" H 11550 3650 50 0001 C CNN
F 1 "GND" H 11555 3727 50 0000 C CNN
F 2 "" H 11550 3900 50 0001 C CNN
F 3 "" H 11550 3900 50 0001 C CNN
1 11550 3900
1 0 0 -1
$EndComp
Wire Wire Line
11550 3800 11550 3900
$Comp
L Device:CP_Small C9
U 1 1 6072D3B1
P 10500 1850
F 0 "C9" H 10408 1896 50 0000 R CNN
F 1 "1u" H 10408 1805 50 0000 R CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 10500 1850 50 0001 C CNN
F 3 "~" H 10500 1850 50 0001 C CNN
1 10500 1850
-1 0 0 -1
$EndComp
Wire Wire Line
10500 1750 10500 1700
Wire Wire Line
10500 1700 10750 1700
Wire Wire Line
10750 2000 10500 2000
Wire Wire Line
10500 2000 10500 1950
$Comp
L Device:CP_Small C11
U 1 1 6073A7DD
P 12600 1850
F 0 "C11" H 12508 1896 50 0000 R CNN
F 1 "1u" H 12508 1805 50 0000 R CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 12600 1850 50 0001 C CNN
F 3 "~" H 12600 1850 50 0001 C CNN
1 12600 1850
1 0 0 -1
$EndComp
Wire Wire Line
12600 1750 12600 1700
Wire Wire Line
12600 1700 12350 1700
Wire Wire Line
12350 2000 12600 2000
Wire Wire Line
12600 2000 12600 1950
$Comp
L Device:CP_Small C15
U 1 1 6074DFF2
P 14650 2200
F 0 "C15" V 14700 2250 50 0000 L CNN
F 1 "1u" V 14700 2050 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 14650 2200 50 0001 C CNN
F 3 "~" H 14650 2200 50 0001 C CNN
1 14650 2200
0 -1 -1 0
$EndComp
$Comp
L Device:CP_Small C13
U 1 1 60751B50
P 14650 2500
F 0 "C13" V 14600 2300 50 0000 L CNN
F 1 "1u" V 14600 2600 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 14650 2500 50 0001 C CNN
F 3 "~" H 14650 2500 50 0001 C CNN
1 14650 2500
0 1 1 0
$EndComp
Wire Wire Line
9700 2600 10550 2600
Wire Wire Line
10550 2600 10550 2700
Wire Wire Line
10550 2700 10750 2700
Wire Wire Line
9700 2700 10500 2700
Wire Wire Line
10500 2700 10500 3100
Wire Wire Line
10500 3100 10750 3100
Wire Wire Line
9700 2900 10750 2900
Wire Wire Line
10400 3000 10400 3300
Wire Wire Line
10400 3300 10750 3300
Wire Wire Line
9700 3000 10400 3000
$Comp
L Interface_UART:MAX3232 U7
U 1 1 60829DCF
P 11550 5750
F 0 "U7" H 11050 6850 50 0000 C CNN
F 1 "MAX3232" H 11900 6850 50 0000 C CNN
F 2 "Package_DIP:DIP-16_W7.62mm_Socket" H 11600 4700 50 0001 L CNN
F 3 "https://datasheets.maximintegrated.com/en/ds/MAX3222-MAX3241.pdf" H 11550 5850 50 0001 C CNN
1 11550 5750
1 0 0 -1
$EndComp
$Comp
L power:+5V #PWR0113
U 1 1 60829DD5
P 11550 4450
F 0 "#PWR0113" H 11550 4300 50 0001 C CNN
F 1 "+5V" H 11565 4623 50 0000 C CNN
F 2 "" H 11550 4450 50 0001 C CNN
F 3 "" H 11550 4450 50 0001 C CNN
1 11550 4450
1 0 0 -1
$EndComp
Wire Wire Line
11550 4450 11550 4550
$Comp
L power:GND #PWR0114
U 1 1 60829DDC
P 11550 7050
F 0 "#PWR0114" H 11550 6800 50 0001 C CNN
F 1 "GND" H 11555 6877 50 0000 C CNN
F 2 "" H 11550 7050 50 0001 C CNN
F 3 "" H 11550 7050 50 0001 C CNN
1 11550 7050
1 0 0 -1
$EndComp
Wire Wire Line
11550 6950 11550 7000
Wire Wire Line
10500 4900 10500 4850
Wire Wire Line
10500 4850 10750 4850
Wire Wire Line
10750 5150 10500 5150
Wire Wire Line
10500 5150 10500 5100
Wire Wire Line
12600 4900 12600 4850
Wire Wire Line
12600 4850 12350 4850
Wire Wire Line
12350 5150 12600 5150
Wire Wire Line
12600 5150 12600 5100
Wire Wire Line
9700 3200 10200 3200
Wire Wire Line
10200 3200 10200 5850
Wire Wire Line
10200 5850 10750 5850
Wire Wire Line
10750 6250 10000 6250
Wire Wire Line
10000 6250 10000 3300
Wire Wire Line
10000 3300 9700 3300
Wire Wire Line
9700 3500 9800 3500
Wire Wire Line
9800 3500 9800 6450
Wire Wire Line
9800 6450 10750 6450
Wire Wire Line
10750 6050 10600 6050
Wire Wire Line
10600 6050 10600 7000
Wire Wire Line
10600 7000 11550 7000
Connection ~ 11550 7000
Wire Wire Line
11550 7000 11550 7050
NoConn ~ 12350 6050
Text GLabel 8300 2600 0 50 Input ~ 0
A0
Wire Wire Line
8300 2600 8500 2600
Text GLabel 8300 2700 0 50 Input ~ 0
A1
Wire Wire Line
8300 2700 8500 2700
$Comp
L Connector:Conn_01x02_Male J1
U 1 1 6090D8D6
P 6550 2100
F 0 "J1" H 6658 2281 50 0000 C CNN
F 1 "IRQ ENABLE" H 6658 2190 50 0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 6550 2100 50 0001 C CNN
F 3 "~" H 6550 2100 50 0001 C CNN
1 6550 2100
1 0 0 -1
$EndComp
Wire Wire Line
6750 2100 8500 2100
Text GLabel 7100 2200 2 50 Output ~ 0
~IRQ
Wire Wire Line
7100 2200 6750 2200
Wire Wire Line
8300 2300 8500 2300
Wire Wire Line
8300 2400 8500 2400
NoConn ~ 9700 2100
NoConn ~ 9700 1900
Text GLabel 9900 1800 2 50 Input ~ 0
SERCLK
Wire Wire Line
9900 1800 9700 1800
Text GLabel 3250 3200 2 50 Output ~ 0
~DEVSEL
Wire Wire Line
2600 3200 3250 3200
$Comp
L power:+5V #PWR0115
U 1 1 60A380F7
P 4250 4700
F 0 "#PWR0115" H 4250 4550 50 0001 C CNN
F 1 "+5V" H 4265 4873 50 0000 C CNN
F 2 "" H 4250 4700 50 0001 C CNN
F 3 "" H 4250 4700 50 0001 C CNN
1 4250 4700
1 0 0 -1
$EndComp
Wire Wire Line
4250 4700 4250 4850
Wire Wire Line
4250 4850 5350 4850
Wire Wire Line
5350 4950 4900 4950
Text GLabel 4900 4950 0 50 Input ~ 0
~ROMOE
Wire Wire Line
8500 1900 7750 1900
Wire Wire Line
2600 2300 2900 2300
Text GLabel 2900 2300 2 50 Output ~ 0
A11
NoConn ~ 2600 3400
Text GLabel 7750 1900 0 50 Input ~ 0
PHI2
Wire Wire Line
9100 1350 9100 1450
$Comp
L power:+5V #PWR0116
U 1 1 606E5D59
P 9100 1350
F 0 "#PWR0116" H 9100 1200 50 0001 C CNN
F 1 "+5V" H 9115 1523 50 0000 C CNN
F 2 "" H 9100 1350 50 0001 C CNN
F 3 "" H 9100 1350 50 0001 C CNN
1 9100 1350
1 0 0 -1
$EndComp
Text GLabel 8300 2300 0 50 Input ~ 0
A3
Text GLabel 8300 2400 0 50 Input ~ 0
A2
Wire Wire Line
5100 5450 5750 5450
Connection ~ 5750 5450
Wire Wire Line
5750 5450 5750 5600
Wire Wire Line
5350 4450 5100 4450
Wire Wire Line
5100 4450 5100 4550
Wire Wire Line
5350 4550 5100 4550
Connection ~ 5100 4550
Wire Wire Line
5100 4550 5100 4650
Wire Wire Line
5350 4650 5100 4650
Connection ~ 5100 4650
Wire Wire Line
5100 4650 5100 5050
Wire Wire Line
5350 5050 5100 5050
Connection ~ 5100 5050
Wire Wire Line
5100 5050 5100 5450
$Comp
L ssc:Conn_PC_MB_Serial J2
U 1 1 60B42E0D
P 14500 4100
F 0 "J2" H 14500 4850 50 0000 C CNN
F 1 "RS-232 OUT" H 14500 4750 50 0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical" H 14500 4100 50 0001 C CNN
F 3 "" H 14500 4100 50 0001 C CNN
1 14500 4100
1 0 0 -1
$EndComp
NoConn ~ 14200 4300
$Comp
L power:GND #PWR0118
U 1 1 60BC43CC
P 14500 4850
F 0 "#PWR0118" H 14500 4600 50 0001 C CNN
F 1 "GND" H 14505 4677 50 0000 C CNN
F 2 "" H 14500 4850 50 0001 C CNN
F 3 "" H 14500 4850 50 0001 C CNN
1 14500 4850
1 0 0 -1
$EndComp
$Comp
L ssc:SSCGLU U4
U 1 1 60610D04
P 7350 8500
F 0 "U4" H 6900 9350 50 0000 C CNN
F 1 "SSCGLU" H 7650 9350 50 0000 C CNN
F 2 "Package_DIP:DIP-24_W7.62mm_Socket" H 7350 8500 50 0001 C CNN
F 3 "" H 7350 8500 50 0001 C CNN
1 7350 8500
1 0 0 -1
$EndComp
Text GLabel 6300 7800 0 50 Input ~ 0
~RES
Wire Wire Line
6300 7800 6650 7800
$Comp
L power:GND #PWR0119
U 1 1 60630927
P 7350 9500
F 0 "#PWR0119" H 7350 9250 50 0001 C CNN
F 1 "GND" H 7355 9327 50 0000 C CNN
F 2 "" H 7350 9500 50 0001 C CNN
F 3 "" H 7350 9500 50 0001 C CNN
1 7350 9500
1 0 0 -1
$EndComp
Wire Wire Line
7350 9400 7350 9500
$Comp
L power:+5V #PWR0120
U 1 1 60652D29
P 7350 7400
F 0 "#PWR0120" H 7350 7250 50 0001 C CNN
F 1 "+5V" H 7365 7573 50 0000 C CNN
F 2 "" H 7350 7400 50 0001 C CNN
F 3 "" H 7350 7400 50 0001 C CNN
1 7350 7400
1 0 0 -1
$EndComp
Wire Wire Line
7350 7400 7350 7500
Text GLabel 6000 7900 0 50 Input ~ 0
R~W
Wire Wire Line
6000 7900 6650 7900
Wire Wire Line
6650 8500 6350 8500
Text GLabel 6350 8500 0 50 Input ~ 0
A11
Wire Wire Line
6650 8400 6350 8400
Text GLabel 6350 8400 0 50 Input ~ 0
A10
Wire Wire Line
6650 8300 6350 8300
Text GLabel 6350 8300 0 50 Input ~ 0
A9
Wire Wire Line
6650 8200 6350 8200
Text GLabel 6350 8200 0 50 Input ~ 0
A8
Wire Wire Line
6650 8100 6350 8100
Text GLabel 6350 8100 0 50 Input ~ 0
A3
Wire Wire Line
8000 8200 8300 8200
Text GLabel 8300 8200 2 50 Output ~ 0
ROMA10
Wire Wire Line
8000 8100 8300 8100
Text GLabel 8300 8100 2 50 Output ~ 0
ROMA9
Wire Wire Line
8000 8000 8300 8000
Text GLabel 8300 8000 2 50 Output ~ 0
ROMA8
Wire Wire Line
8000 8350 8300 8350
Text GLabel 8300 8350 2 50 Output ~ 0
~ROMOE
Wire Wire Line
8000 8550 8300 8550
Text GLabel 8300 8550 2 50 Output ~ 0
PHI2
Wire Wire Line
8000 8750 8300 8750
Text GLabel 8300 8750 2 50 3State ~ 0
D0
Connection ~ 10400 3300
Text GLabel 6350 8950 0 50 Input ~ 0
~DEVSEL
Wire Wire Line
6650 8950 6350 8950
Text GLabel 6000 9050 0 50 Input ~ 0
~IOSEL
Wire Wire Line
6650 9050 6000 9050
Text GLabel 6350 9150 0 50 Input ~ 0
~IOSTRB
Wire Wire Line
6650 9150 6350 9150
$Comp
L Device:C_Small C5
U 1 1 607702D5
P 14500 9050
F 0 "C5" H 14592 9096 50 0000 L CNN
F 1 "0.1u" H 14592 9005 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 14500 9050 50 0001 C CNN
F 3 "~" H 14500 9050 50 0001 C CNN
1 14500 9050
1 0 0 -1
$EndComp
$Comp
L Device:C_Small C6
U 1 1 60772476
P 14950 9050
F 0 "C6" H 15042 9096 50 0000 L CNN
F 1 "0.1u" H 15042 9005 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 14950 9050 50 0001 C CNN
F 3 "~" H 14950 9050 50 0001 C CNN
1 14950 9050
1 0 0 -1
$EndComp
$Comp
L Device:C_Small C7
U 1 1 6077E9A6
P 15400 9050
F 0 "C7" H 15492 9096 50 0000 L CNN
F 1 "0.1u" H 15492 9005 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 15400 9050 50 0001 C CNN
F 3 "~" H 15400 9050 50 0001 C CNN
1 15400 9050
1 0 0 -1
$EndComp
$Comp
L Device:C_Small C1
U 1 1 607A5962
P 12700 9050
F 0 "C1" H 12792 9096 50 0000 L CNN
F 1 "0.1u" H 12792 9005 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 12700 9050 50 0001 C CNN
F 3 "~" H 12700 9050 50 0001 C CNN
1 12700 9050
1 0 0 -1
$EndComp
$Comp
L Device:C_Small C2
U 1 1 607A5968
P 13150 9050
F 0 "C2" H 13242 9096 50 0000 L CNN
F 1 "0.1u" H 13242 9005 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 13150 9050 50 0001 C CNN
F 3 "~" H 13150 9050 50 0001 C CNN
1 13150 9050
1 0 0 -1
$EndComp
$Comp
L Device:C_Small C3
U 1 1 607A596E
P 13600 9050
F 0 "C3" H 13692 9096 50 0000 L CNN
F 1 "0.1u" H 13692 9005 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 13600 9050 50 0001 C CNN
F 3 "~" H 13600 9050 50 0001 C CNN
1 13600 9050
1 0 0 -1
$EndComp
$Comp
L Device:C_Small C4
U 1 1 607A5974
P 14050 9050
F 0 "C4" H 14142 9096 50 0000 L CNN
F 1 "0.1u" H 14142 9005 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm" H 14050 9050 50 0001 C CNN
F 3 "~" H 14050 9050 50 0001 C CNN
1 14050 9050
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR02
U 1 1 607C13EC
P 15400 9450
F 0 "#PWR02" H 15400 9200 50 0001 C CNN
F 1 "GND" H 15405 9277 50 0000 C CNN
F 2 "" H 15400 9450 50 0001 C CNN
F 3 "" H 15400 9450 50 0001 C CNN
1 15400 9450
1 0 0 -1
$EndComp
Wire Wire Line
12700 9150 12700 9300
Wire Wire Line
15400 9300 15400 9450
Wire Wire Line
13150 9150 13150 9300
Wire Wire Line
12700 9300 13150 9300
Wire Wire Line
13600 9150 13600 9300
Connection ~ 13150 9300
Wire Wire Line
13150 9300 13600 9300
Wire Wire Line
14050 9150 14050 9300
Connection ~ 13600 9300
Wire Wire Line
13600 9300 14050 9300
Wire Wire Line
14500 9150 14500 9300
Connection ~ 14050 9300
Wire Wire Line
14050 9300 14500 9300
Wire Wire Line
14950 9150 14950 9300
Connection ~ 14500 9300
Wire Wire Line
14500 9300 14950 9300
Wire Wire Line
15400 9150 15400 9300
Connection ~ 14950 9300
Wire Wire Line
14950 9300 15400 9300
$Comp
L power:+5V #PWR01
U 1 1 6083D92E
P 12700 8650
F 0 "#PWR01" H 12700 8500 50 0001 C CNN
F 1 "+5V" H 12715 8823 50 0000 C CNN
F 2 "" H 12700 8650 50 0001 C CNN
F 3 "" H 12700 8650 50 0001 C CNN
1 12700 8650
1 0 0 -1
$EndComp
Wire Wire Line
13150 8800 13150 8950
Wire Wire Line
12700 8650 12700 8800
Wire Wire Line
13600 8800 13600 8950
Wire Wire Line
14050 8800 14050 8950
Wire Wire Line
14500 8800 14500 8950
Wire Wire Line
14950 8800 14950 8950
Wire Wire Line
15400 8800 15400 8950
Connection ~ 12700 8800
Wire Wire Line
12700 8800 12700 8950
Connection ~ 13150 8800
Wire Wire Line
13150 8800 12700 8800
Connection ~ 13600 8800
Wire Wire Line
13600 8800 13150 8800
Connection ~ 14050 8800
Wire Wire Line
14050 8800 13600 8800
Connection ~ 14500 8800
Wire Wire Line
14500 8800 14050 8800
Connection ~ 14950 8800
Wire Wire Line
14950 8800 14500 8800
Wire Wire Line
15400 8800 14950 8800
Wire Wire Line
8000 8950 8300 8950
Text GLabel 8300 8950 2 50 Output ~ 0
~LATCHCE
$Comp
L Memory_EEPROM:28C256 U2
U 1 1 605D1154
P 5750 4150
F 0 "U2" H 5500 5250 50 0000 C CNN
F 1 "28C256" H 5950 5250 50 0000 C CNN
F 2 "Package_DIP:DIP-28_W15.24mm_Socket" H 5750 4150 50 0001 C CNN
F 3 "http://ww1.microchip.com/downloads/en/DeviceDoc/doc0006.pdf" H 5750 4150 50 0001 C CNN
1 5750 4150
1 0 0 -1
$EndComp
Wire Wire Line
5500 8700 5500 6450
Wire Wire Line
5500 6450 9600 6450
Wire Wire Line
9600 6450 9600 4300
Wire Wire Line
9600 4300 10400 4300
Wire Wire Line
5500 8700 6650 8700
Wire Wire Line
10400 3300 10400 4300
Wire Wire Line
14750 2500 15000 2500
Connection ~ 15000 2500
Wire Wire Line
14750 2200 15000 2200
Wire Wire Line
15000 2200 15000 2500
Wire Wire Line
12350 2200 14550 2200
Wire Wire Line
12350 2500 14550 2500
$Comp
L Device:CP_Small C16
U 1 1 60B08BAF
P 14650 5350
F 0 "C16" V 14700 5400 50 0000 L CNN
F 1 "1u" V 14700 5200 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 14650 5350 50 0001 C CNN
F 3 "~" H 14650 5350 50 0001 C CNN
1 14650 5350
0 -1 -1 0
$EndComp
$Comp
L Device:CP_Small C14
U 1 1 60B08BB5
P 14650 5650
F 0 "C14" V 14600 5450 50 0000 L CNN
F 1 "1u" V 14600 5750 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 14650 5650 50 0001 C CNN
F 3 "~" H 14650 5650 50 0001 C CNN
1 14650 5650
0 1 1 0
$EndComp
$Comp
L power:GND #PWR0117
U 1 1 60B08BBB
P 15000 5950
F 0 "#PWR0117" H 15000 5700 50 0001 C CNN
F 1 "GND" H 15005 5777 50 0000 C CNN
F 2 "" H 15000 5950 50 0001 C CNN
F 3 "" H 15000 5950 50 0001 C CNN
1 15000 5950
1 0 0 -1
$EndComp
Wire Wire Line
14750 5650 15000 5650
Connection ~ 15000 5650
Wire Wire Line
14750 5350 15000 5350
Wire Wire Line
15000 5350 15000 5650
Wire Wire Line
12350 5350 14550 5350
Wire Wire Line
12350 5650 14550 5650
$Comp
L Device:CP_Small C12
U 1 1 609EBDF6
P 12600 5000
F 0 "C12" H 12508 5046 50 0000 R CNN
F 1 "1u" H 12508 4955 50 0000 R CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 12600 5000 50 0001 C CNN
F 3 "~" H 12600 5000 50 0001 C CNN
1 12600 5000
1 0 0 -1
$EndComp
$Comp
L Device:CP_Small C10
U 1 1 60829DE3
P 10500 5000
F 0 "C10" H 10408 5046 50 0000 R CNN
F 1 "1u" H 10408 4955 50 0000 R CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 10500 5000 50 0001 C CNN
F 3 "~" H 10500 5000 50 0001 C CNN
1 10500 5000
-1 0 0 -1
$EndComp
Wire Wire Line
15000 5650 15000 5950
Wire Wire Line
5350 4350 5100 4350
Connection ~ 5100 4450
Wire Wire Line
5100 4350 5100 4450
Text GLabel 5050 4250 0 50 Input ~ 0
ROMA10
Text GLabel 5050 4150 0 50 Input ~ 0
ROMA9
Text GLabel 5050 4050 0 50 Input ~ 0
ROMA8
Wire Wire Line
15000 2500 15000 2700
$Comp
L power:GND #PWR0112
U 1 1 6076F2F3
P 15000 2700
F 0 "#PWR0112" H 15000 2450 50 0001 C CNN
F 1 "GND" H 15005 2527 50 0000 C CNN
F 2 "" H 15000 2700 50 0001 C CNN
F 3 "" H 15000 2700 50 0001 C CNN
1 15000 2700
1 0 0 -1
$EndComp
Wire Wire Line
14500 4800 14500 4850
Wire Wire Line
12350 6450 13750 6450
Wire Wire Line
13750 6450 13750 3600
Wire Wire Line
13750 3600 14200 3600
Wire Wire Line
14200 4000 13400 4000
Wire Wire Line
13400 4000 13400 6250
Wire Wire Line
13400 6250 12350 6250
Wire Wire Line
12350 2700 13400 2700
Wire Wire Line
13400 2700 13400 3800
Wire Wire Line
13400 3800 14200 3800
Wire Wire Line
12350 2900 13250 2900
Wire Wire Line
13250 2900 13250 4100
Wire Wire Line
13250 4100 14200 4100
Wire Wire Line
12350 3100 13100 3100
Wire Wire Line
13100 3100 13100 3700
Wire Wire Line
13100 3700 14200 3700
Wire Wire Line
14200 4200 12950 4200
Wire Wire Line
12950 4200 12950 3300
Wire Wire Line
12950 3300 12350 3300
Wire Wire Line
12350 5850 13950 5850
Wire Wire Line
13950 5850 13950 3900
Wire Wire Line
13950 3900 14200 3900
Connection ~ 15400 9300
$Comp
L 74xx:74HC245 U1
U 1 1 605EA66C
P 2000 6850
F 0 "U1" H 1750 7550 50 0000 C CNN
F 1 "74HCT245" H 2250 7550 50 0000 C CNN
F 2 "Package_DIP:DIP-20_W7.62mm_Socket" H 2000 6850 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC245" H 2000 6850 50 0001 C CNN
1 2000 6850
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR0104
U 1 1 60609613
P 2000 7750
F 0 "#PWR0104" H 2000 7500 50 0001 C CNN
F 1 "GND" H 2005 7577 50 0000 C CNN
F 2 "" H 2000 7750 50 0001 C CNN
F 3 "" H 2000 7750 50 0001 C CNN
1 2000 7750
1 0 0 -1
$EndComp
$Comp
L power:+5V #PWR0103
U 1 1 60602B67
P 2000 5950
F 0 "#PWR0103" H 2000 5800 50 0001 C CNN
F 1 "+5V" H 2015 6123 50 0000 C CNN
F 2 "" H 2000 5950 50 0001 C CNN
F 3 "" H 2000 5950 50 0001 C CNN
1 2000 5950
1 0 0 -1
$EndComp
Text GLabel 1050 7350 0 50 Input ~ 0
~LATCHCE
Wire Wire Line
1300 6950 1500 6950
Wire Wire Line
1300 6850 1500 6850
Wire Wire Line
1300 6650 1500 6650
Wire Wire Line
1300 6550 1500 6550
Wire Wire Line
1300 6450 1500 6450
Wire Wire Line
1300 6350 1500 6350
Wire Wire Line
1050 7350 1500 7350
Text GLabel 1000 1200 0 50 BiDi ~ 0
MD0
Wire Wire Line
1000 1200 1200 1200
Text GLabel 1000 1300 0 50 BiDi ~ 0
MD1
Text GLabel 1000 1400 0 50 BiDi ~ 0
MD2
Text GLabel 1000 1500 0 50 BiDi ~ 0
MD3
Wire Wire Line
1000 1500 1200 1500
Text GLabel 1000 1600 0 50 BiDi ~ 0
MD4
Text GLabel 1000 1700 0 50 BiDi ~ 0
MD5
Text GLabel 1000 1800 0 50 BiDi ~ 0
MD6
Text GLabel 1000 1900 0 50 BiDi ~ 0
MD7
Wire Wire Line
1000 1300 1200 1300
Wire Wire Line
1000 1400 1200 1400
Wire Wire Line
1000 1600 1200 1600
Wire Wire Line
1000 1700 1200 1700
Wire Wire Line
1000 1800 1200 1800
Wire Wire Line
1000 1900 1200 1900
Wire Wire Line
2000 5950 2000 6050
Wire Wire Line
2000 7650 2000 7750
Text GLabel 2700 7050 2 50 BiDi ~ 0
MD0
Wire Wire Line
2700 7050 2500 7050
Text GLabel 2700 6950 2 50 BiDi ~ 0
MD1
Text GLabel 2700 6850 2 50 BiDi ~ 0
MD2
Text GLabel 2700 6750 2 50 BiDi ~ 0
MD3
Wire Wire Line
2700 6750 2500 6750
Text GLabel 2700 6650 2 50 BiDi ~ 0
MD4
Text GLabel 2700 6550 2 50 BiDi ~ 0
MD5
Text GLabel 2700 6450 2 50 BiDi ~ 0
MD6
Text GLabel 2700 6350 2 50 BiDi ~ 0
MD7
Wire Wire Line
2700 6950 2500 6950
Wire Wire Line
2700 6850 2500 6850
Wire Wire Line
2700 6650 2500 6650
Wire Wire Line
2700 6550 2500 6550
Wire Wire Line
2700 6450 2500 6450
Wire Wire Line
2700 6350 2500 6350
Wire Wire Line
1300 7250 1500 7250
Text GLabel 1300 7250 0 50 Input ~ 0
R~W
$EndSCHEMATC
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