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RC6502-Apple-1-Replica
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RC6502-Apple-1-Replica/Abandoned/RC6502 Serial Adapter/RC6502 Serial Adapter.sch

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EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:switches
LIBS:relays
LIBS:motors
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:r6551
LIBS:rc6502_backplane
LIBS:RC6502 Serial Adapter-cache
EELAYER 25 0
EELAYER END
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Date ""
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Comment2 ""
Comment3 ""
Comment4 ""
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F 1 "R6551" H 2625 5250 50 0000 C CNN
F 2 "" H 2325 6250 50 0001 C CNN
F 3 "" H 2325 6250 50 0001 C CNN
1 2325 6250
1 0 0 -1
$EndComp
$Comp
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F 1 "RC6502_Backplane" V 11075 4400 50 0000 C CNN
F 2 "Pin_Headers:Pin_Header_Angled_1x39_Pitch2.54mm" H 10625 4450 50 0001 C CNN
F 3 "" H 10625 4450 50 0001 C CNN
1 10625 4450
1 0 0 -1
$EndComp
$Comp
L 74LS138 U5
U 1 1 5C3F2CED
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F 0 "U5" H 8100 2700 50 0000 C CNN
F 1 "74LS138" H 8250 1651 50 0000 C CNN
F 2 "Housings_DIP:DIP-16_W7.62mm" H 8100 2200 50 0001 C CNN
F 3 "" H 8100 2200 50 0001 C CNN
1 8100 2200
0 -1 -1 0
$EndComp
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L 74LS138 U4
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F 1 "74LS138" H 6875 1651 50 0000 C CNN
F 2 "Housings_DIP:DIP-16_W7.62mm" H 6725 2200 50 0001 C CNN
F 3 "" H 6725 2200 50 0001 C CNN
1 6725 2200
0 -1 -1 0
$EndComp
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F 3 "" H 8050 1325 50 0001 C CNN
1 8050 1325
0 -1 -1 0
$EndComp
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Text Label 10375 2650 2 60 ~ 0
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Text Label 10375 2750 2 60 ~ 0
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Text Label 10375 3050 2 60 ~ 0
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Text Label 10375 2950 2 60 ~ 0
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Text Label 10375 2850 2 60 ~ 0
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Text Label 7750 2850 3 60 ~ 0
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Text Label 7850 2850 3 60 ~ 0
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Text Label 7950 2850 3 60 ~ 0
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F 3 "" H 8450 2950 50 0001 C CNN
1 8450 2950
1 0 0 -1
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Text Label 6875 2850 3 60 ~ 0
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F 3 "" H 6975 2800 50 0001 C CNN
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1 0 0 -1
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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
10425 2950 10075 2950
Wire Wire Line
10425 3050 10075 3050
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
7850 2800 7850 3150
Wire Wire Line
7950 2800 7950 3150
Wire Wire Line
8250 2800 8250 3150
Wire Wire Line
8450 2800 8450 2950
Wire Wire Line
8450 2875 8350 2875
Wire Wire Line
8350 2875 8350 2800
Connection ~ 8450 2875
Wire Wire Line
6375 2800 6375 3150
Wire Wire Line
6475 2800 6475 3150
Wire Wire Line
6875 2800 6875 3150
Wire Wire Line
7075 2800 7075 3000
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
7750 1025 7750 950
Connection ~ 7750 950
Wire Wire Line
7850 1025 7850 950
Connection ~ 7850 950
Wire Wire Line
7950 1025 7950 950
Connection ~ 7950 950
Wire Wire Line
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Connection ~ 8050 950
Wire Wire Line
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Connection ~ 8150 950
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Connection ~ 8250 950
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Connection ~ 8350 950
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Wire Wire Line
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Wire Wire Line
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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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Wire Wire Line
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Entry Wire Line
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Wire Wire Line
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Entry Wire Line
9975 5650 10075 5750
Wire Wire Line
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Entry Wire Line
9975 5750 10075 5850
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NoConn ~ 10425 6050
NoConn ~ 10425 4950
NoConn ~ 10425 5050
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Wire Bus Line
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Wire Bus Line
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Text Label 10375 5250 2 60 ~ 0
D1
Text Label 10375 5350 2 60 ~ 0
D2
Text Label 10375 5450 2 60 ~ 0
D3
Text Label 10375 5550 2 60 ~ 0
D4
Text Label 10375 5650 2 60 ~ 0
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Text Label 10375 5750 2 60 ~ 0
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
6675 950 6675 1025
Wire Wire Line
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Connection ~ 6575 950
Wire Wire Line
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Connection ~ 6475 950
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1 2300 4525
1 0 0 -1
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Entry Wire Line
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Wire Wire Line
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Text Label 1575 5850 2 60 ~ 0
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Text Label 1575 6350 2 60 ~ 0
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F 1 "GND" H 9825 4200 50 0000 C CNN
F 2 "" H 9825 4350 50 0001 C CNN
F 3 "" H 9825 4350 50 0001 C CNN
1 9825 4350
1 0 0 -1
$EndComp
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Wire Wire Line
9825 4150 10425 4150
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F 1 "VCC" H 9875 4200 50 0000 C CNN
F 2 "" H 9875 4050 50 0001 C CNN
F 3 "" H 9875 4050 50 0001 C CNN
1 9875 4050
1 0 0 -1
$EndComp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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NoConn ~ 10425 3350
NoConn ~ 10425 3450
NoConn ~ 10425 3550
NoConn ~ 10425 3650
NoConn ~ 10425 3750
NoConn ~ 10425 3850
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F 3 "" H 9425 1150 50 0001 C CNN
1 9425 1150
-1 0 0 1
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$Comp
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1 9750 1150
-1 0 0 1
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$Comp
L C C8
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F 3 "" H 10075 1150 50 0001 C CNN
1 10075 1150
-1 0 0 1
$EndComp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 9750 925
Wire Wire Line
9425 1300 9425 1375
Wire Wire Line
9425 1375 10725 1375
Wire Wire Line
10075 1375 10075 1300
Wire Wire Line
9750 1300 9750 1375
Connection ~ 9750 1375
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F 3 "" H 10400 1150 50 0001 C CNN
1 10400 1150
-1 0 0 1
$EndComp
$Comp
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F 3 "" H 10725 1150 50 0001 C CNN
1 10725 1150
-1 0 0 1
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Wire Wire Line
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Connection ~ 10075 1375
Wire Wire Line
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Connection ~ 10400 1375
Wire Wire Line
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Connection ~ 10400 925
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F 1 "GND" H 10725 1300 50 0000 C CNN
F 2 "" H 10725 1450 50 0001 C CNN
F 3 "" H 10725 1450 50 0001 C CNN
1 10725 1450
1 0 0 -1
$EndComp
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$Comp
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F 1 "VCC" H 9425 1000 50 0000 C CNN
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F 3 "" H 9425 850 50 0001 C CNN
1 9425 850
1 0 0 -1
$EndComp
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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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Wire Wire Line
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Entry Wire Line
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Wire Wire Line
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Entry Wire Line
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Text Label 1600 5450 2 60 ~ 0
A1
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F 1 "GND" H 6575 2650 50 0000 C CNN
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F 3 "" H 6575 2800 50 0001 C CNN
1 6575 2800
1 0 0 -1
$EndComp
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F 3 "" H 6475 1325 50 0001 C CNN
1 6475 1325
0 -1 -1 0
$EndComp
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NoConn ~ 6875 1600
NoConn ~ 6975 1600
NoConn ~ 7075 1600
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F 3 "" H 1175 6650 50 0001 C CNN
1 1175 6650
1 0 0 -1
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F 3 "" H 3300 5500 50 0001 C CNN
1 3300 5500
0 -1 -1 0
$EndComp
$Comp
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F 3 "" H 4000 5500 50 0001 C CNN
1 4000 5500
-1 0 0 1
$EndComp
$Comp
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P 3650 5500
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F 1 "1M" V 3650 5500 50 0000 C CNN
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F 3 "" H 3650 5500 50 0001 C CNN
1 3650 5500
1 0 0 -1
$EndComp
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Connection ~ 3300 5350
Wire Wire Line
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Connection ~ 3300 5650
Connection ~ 3650 5350
$Comp
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P 4000 5650
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F 1 "GND" H 4000 5500 50 0000 C CNN
F 2 "" H 4000 5650 50 0001 C CNN
F 3 "" H 4000 5650 50 0001 C CNN
1 4000 5650
1 0 0 -1
$EndComp
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Wire Notes Line
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Wire Notes Line
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Wire Notes Line
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Text Notes 3575 5225 0 60 ~ 0
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$Comp
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P 1925 900
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F 1 "FTDI" H 1925 500 50 0000 C CNN
F 2 "" H 1925 900 50 0001 C CNN
F 3 "" H 1925 900 50 0001 C CNN
1 1925 900
0 -1 -1 0
$EndComp
$Comp
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F 0 "#PWR010" H 1625 1075 50 0001 C CNN
F 1 "GND" H 1625 1175 50 0000 C CNN
F 2 "" H 1625 1325 50 0001 C CNN
F 3 "" H 1625 1325 50 0001 C CNN
1 1625 1325
1 0 0 -1
$EndComp
Wire Wire Line
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Entry Wire Line
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Wire Wire Line
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Entry Wire Line
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Wire Wire Line
1825 1550 1825 2025
Entry Wire Line
1825 2025 1725 2125
Wire Wire Line
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Text Label 3325 6850 2 60 ~ 0
~RTS
NoConn ~ 2225 1100
Text Label 1825 1975 1 60 ~ 0
~RTS
Wire Wire Line
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Wire Wire Line
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Text Label 3325 7050 2 60 ~ 0
RxD
Text Label 3325 7150 2 60 ~ 0
TxD
Wire Wire Line
3025 7050 3375 7050
Wire Wire Line
3375 7150 3025 7150
Text Label 2025 1975 1 60 ~ 0
RxD
Text Label 2225 1975 1 60 ~ 0
TxD
Text Label 3325 6950 2 60 ~ 0
~CTS
Wire Wire Line
3025 6550 3600 6550
Wire Wire Line
3375 6950 3025 6950
Entry Wire Line
3375 6850 3475 6950
Entry Wire Line
3375 6950 3475 7050
Entry Wire Line
3375 7050 3475 7150
Entry Wire Line
3375 7150 3475 7250
Wire Bus Line
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Wire Bus Line
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$Comp
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F 2 "" H 1350 1175 50 0001 C CNN
F 3 "" H 1350 1175 50 0001 C CNN
1 1350 1175
1 0 0 -1
$EndComp
$Comp
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P 1175 1100
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F 1 "VCC" H 1175 1250 50 0000 C CNN
F 2 "" H 1175 1100 50 0001 C CNN
F 3 "" H 1175 1100 50 0001 C CNN
1 1175 1100
1 0 0 -1
$EndComp
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$Comp
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F 1 "GND" H 2300 4675 50 0000 C CNN
F 2 "" H 2300 4825 50 0001 C CNN
F 3 "" H 2300 4825 50 0001 C CNN
1 2300 4825
1 0 0 -1
$EndComp
$Comp
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P 2300 4225
F 0 "#PWR013" H 2300 4075 50 0001 C CNN
F 1 "VCC" H 2300 4375 50 0000 C CNN
F 2 "" H 2300 4225 50 0001 C CNN
F 3 "" H 2300 4225 50 0001 C CNN
1 2300 4225
1 0 0 -1
$EndComp
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Wire Bus Line
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Wire Wire Line
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Wire Wire Line
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Wire Notes Line
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Wire Notes Line
2025 5050 2725 5050
Wire Notes Line
2725 5050 2725 4000
Wire Notes Line
2725 4000 2025 4000
Wire Notes Line
3100 5050 3100 5850
Wire Notes Line
3100 5850 4200 5850
Wire Notes Line
4200 5850 4200 5050
Wire Notes Line
4200 5050 3100 5050
Text Notes 3325 5025 0 60 ~ 0
6551 Crystal clock
Text Notes 2000 5025 1 60 ~ 0
6551 Oscillator clock
Wire Bus Line
750 2125 2125 2125
Wire Wire Line
1625 1250 1625 1325
Wire Wire Line
1825 1100 1825 1250
Wire Wire Line
2025 1100 2025 1250
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
1175 1175 1250 1175
$Comp
L MAX232 U3
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P 3950 2650
F 0 "U3" H 3850 3775 50 0000 R CNN
F 1 "MAX232" H 3850 3700 50 0000 R CNN
F 2 "" H 4000 1600 50 0001 L CNN
F 3 "" H 3950 2750 50 0001 C CNN
1 3950 2650
1 0 0 -1
$EndComp
Wire Bus Line
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$Comp
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F 0 "C4" H 5185 2145 50 0000 L CNN
F 1 "1uF" H 5185 1995 50 0000 L CNN
F 2 "" H 5175 2075 50 0001 C CNN
F 3 "" H 5175 2075 50 0001 C CNN
1 5175 2075
1 0 0 -1
$EndComp
Wire Wire Line
4750 2250 5175 2250
Wire Wire Line
5175 2250 5175 2175
$Comp
L VCC #PWR014
U 1 1 5C405298
P 3950 1450
F 0 "#PWR014" H 3950 1300 50 0001 C CNN
F 1 "VCC" H 3950 1600 50 0000 C CNN
F 2 "" H 3950 1450 50 0001 C CNN
F 3 "" H 3950 1450 50 0001 C CNN
1 3950 1450
1 0 0 -1
$EndComp
$Comp
L CP_Small C3
U 1 1 5C40565F
P 4900 1900
F 0 "C3" H 4910 1970 50 0000 L CNN
F 1 "1uF" H 4910 1820 50 0000 L CNN
F 2 "" H 4900 1900 50 0001 C CNN
F 3 "" H 4900 1900 50 0001 C CNN
1 4900 1900
1 0 0 -1
$EndComp
Wire Wire Line
4900 1750 4900 1800
Wire Wire Line
4750 1750 4900 1750
Wire Wire Line
4900 2050 4900 2000
Wire Wire Line
4750 2050 4900 2050
$Comp
L CP_Small C1
U 1 1 5C405A22
P 3000 1900
F 0 "C1" H 3010 1970 50 0000 L CNN
F 1 "1uF" H 3010 1820 50 0000 L CNN
F 2 "" H 3000 1900 50 0001 C CNN
F 3 "" H 3000 1900 50 0001 C CNN
1 3000 1900
1 0 0 -1
$EndComp
Wire Wire Line
3000 1800 3000 1750
Wire Wire Line
3000 1750 3150 1750
Wire Wire Line
3000 2000 3000 2050
Wire Wire Line
3000 2050 3150 2050
$Comp
L GND #PWR015
U 1 1 5C40672F
P 3950 3850
F 0 "#PWR015" H 3950 3600 50 0001 C CNN
F 1 "GND" H 3950 3700 50 0000 C CNN
F 2 "" H 3950 3850 50 0001 C CNN
F 3 "" H 3950 3850 50 0001 C CNN
1 3950 3850
1 0 0 -1
$EndComp
$Comp
L VCC #PWR016
U 1 1 5C40694A
P 5175 1975
F 0 "#PWR016" H 5175 1825 50 0001 C CNN
F 1 "VCC" H 5175 2125 50 0000 C CNN
F 2 "" H 5175 1975 50 0001 C CNN
F 3 "" H 5175 1975 50 0001 C CNN
1 5175 1975
1 0 0 -1
$EndComp
Wire Wire Line
4750 2550 5175 2550
Wire Wire Line
5175 2550 5175 2625
$Comp
L CP_Small C5
U 1 1 5C406CB7
P 5175 2725
F 0 "C5" H 5185 2795 50 0000 L CNN
F 1 "1uF" H 5185 2645 50 0000 L CNN
F 2 "" H 5175 2725 50 0001 C CNN
F 3 "" H 5175 2725 50 0001 C CNN
1 5175 2725
1 0 0 -1
$EndComp
$Comp
L GND #PWR017
U 1 1 5C406D96
P 5175 2900
F 0 "#PWR017" H 5175 2650 50 0001 C CNN
F 1 "GND" H 5175 2750 50 0000 C CNN
F 2 "" H 5175 2900 50 0001 C CNN
F 3 "" H 5175 2900 50 0001 C CNN
1 5175 2900
1 0 0 -1
$EndComp
Text Label 1550 3150 0 60 ~ 0
RxD
Wire Wire Line
1475 3350 3150 3350
Text Label 1550 2750 0 60 ~ 0
TxD
Wire Wire Line
1475 2950 3150 2950
$Comp
L DB9_Female J2
U 1 1 5C40822D
P 5500 4125
F 0 "J2" H 5500 4675 50 0000 C CNN
F 1 "RS232" H 5500 3550 50 0000 C CNN
F 2 "" H 5500 4125 50 0001 C CNN
F 3 "" H 5500 4125 50 0001 C CNN
1 5500 4125
1 0 0 -1
$EndComp
Wire Wire Line
5200 4325 5125 4325
Wire Wire Line
5125 4325 5125 3825
Wire Wire Line
5125 3825 5200 3825
Wire Wire Line
4750 3350 4975 3350
Wire Wire Line
4975 3350 4975 3925
Wire Wire Line
4975 3925 5200 3925
Wire Wire Line
4750 2950 4900 2950
Wire Wire Line
4900 2950 4900 4125
Wire Wire Line
4900 4125 5200 4125
Wire Wire Line
4825 4025 5200 4025
Wire Wire Line
4825 4025 4825 2750
Wire Wire Line
4825 2750 4750 2750
NoConn ~ 5200 3725
NoConn ~ 5200 4225
NoConn ~ 5200 4425
NoConn ~ 4750 3150
Wire Wire Line
1475 2750 3150 2750
Text Label 4850 7475 1 60 ~ 0
~6551_IRQ
Entry Wire Line
750 6950 850 7050
Wire Wire Line
850 6950 1625 6950
Entry Wire Line
1375 2650 1475 2750
Entry Wire Line
1375 2850 1475 2950
Entry Wire Line
1375 3250 1475 3350
Wire Bus Line
1375 2125 1375 3250
$Comp
L R R1
U 1 1 5C40D9A4
P 1825 1400
F 0 "R1" V 1905 1400 50 0000 C CNN
F 1 "2k2" V 1825 1400 50 0000 C CNN
F 2 "" V 1755 1400 50 0001 C CNN
F 3 "" H 1825 1400 50 0001 C CNN
1 1825 1400
1 0 0 -1
$EndComp
$Comp
L R R3
U 1 1 5C40DA16
P 2025 1400
F 0 "R3" V 2105 1400 50 0000 C CNN
F 1 "2k2" V 2025 1400 50 0000 C CNN
F 2 "" V 1955 1400 50 0001 C CNN
F 3 "" H 2025 1400 50 0001 C CNN
1 2025 1400
1 0 0 -1
$EndComp
$Comp
L R R4
U 1 1 5C40DA81
P 2225 1400
F 0 "R4" V 2305 1400 50 0000 C CNN
F 1 "2k2" V 2225 1400 50 0000 C CNN
F 2 "" V 2155 1400 50 0001 C CNN
F 3 "" H 2225 1400 50 0001 C CNN
1 2225 1400
1 0 0 -1
$EndComp
Wire Wire Line
5175 2900 5175 2825
Wire Wire Line
5200 4525 5125 4525
Wire Wire Line
5125 4525 5125 4600
$Comp
L GND #PWR018
U 1 1 5C40E9FD
P 5125 4600
F 0 "#PWR018" H 5125 4350 50 0001 C CNN
F 1 "GND" H 5125 4450 50 0000 C CNN
F 2 "" H 5125 4600 50 0001 C CNN
F 3 "" H 5125 4600 50 0001 C CNN
1 5125 4600
1 0 0 -1
$EndComp
Text Notes 7000 6750 0 60 ~ 0
Adds a dedicated port supporting regular RS232 and TTL-level serial communications\nbased on R6551 IC.
Text Label 1550 3350 0 60 ~ 0
~CTS
Text Label 1550 2950 0 60 ~ 0
~RTS
Wire Wire Line
1475 3150 3150 3150
Entry Wire Line
1375 3050 1475 3150
NoConn ~ 3025 6450
$Comp
L GND #PWR019
U 1 1 5C5F2AC6
P 3600 6725
F 0 "#PWR019" H 3600 6475 50 0001 C CNN
F 1 "GND" H 3600 6575 50 0000 C CNN
F 2 "" H 3600 6725 50 0001 C CNN
F 3 "" H 3600 6725 50 0001 C CNN
1 3600 6725
1 0 0 -1
$EndComp
Wire Wire Line
3025 6650 3600 6650
Wire Wire Line
3600 6550 3600 6725
Connection ~ 3600 6650
Wire Wire Line
10425 6150 10075 6150
Entry Wire Line
9975 6050 10075 6150
Wire Wire Line
10425 4650 10075 4650
Entry Wire Line
9975 4550 10075 4650
Text Label 10375 4650 2 60 ~ 0
~IRQ
Text Label 10375 6150 2 60 ~ 0
~NMI
$Comp
L Conn_02x02_Odd_Even J6
U 1 1 5C5F6CE0
P 5125 6900
F 0 "J6" H 5175 7000 50 0000 C CNN
F 1 "IRQ_SEL" H 5175 6700 50 0000 C CNN
F 2 "" H 5125 6900 50 0001 C CNN
F 3 "" H 5125 6900 50 0001 C CNN
1 5125 6900
1 0 0 -1
$EndComp
Entry Wire Line
4750 7600 4850 7500
Text Label 5450 7000 0 60 ~ 0
~NMI
Wire Wire Line
5775 7000 5425 7000
Entry Wire Line
5775 7000 5875 7100
Text Label 5450 6900 0 60 ~ 0
~IRQ
Wire Wire Line
5775 6900 5425 6900
Entry Wire Line
5775 6900 5875 7000
Wire Wire Line
4850 7000 4925 7000
Wire Wire Line
4850 6900 4925 6900
Wire Wire Line
4850 6900 4850 7500
Connection ~ 4850 7000
Text Label 1575 6950 2 60 ~ 0
~6551_IRQ
Wire Notes Line
2875 1200 2875 4150
Wire Notes Line
2875 4150 4725 4150
Wire Notes Line
4725 4150 4725 5000
Wire Notes Line
4725 5000 5775 5000
Wire Notes Line
5775 5000 5775 1200
Wire Notes Line
5775 1200 2875 1200
$EndSCHEMATC
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