Apple-1-HW/RC6502-Apple-1-Replica
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RC6502-Apple-1-Replica/RC6502 Debug/RC6502 Debug.sch

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Added schematic for a bus monitor and single stepping card.
2018-12-23 00:12:41 +00:00
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:rc6502_backplane
LIBS:mc14495p1
LIBS:RC6502 Debug-cache
EELAYER 25 0
EELAYER END
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NoConn ~ 2200 1400
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Wire Wire Line
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Wire Wire Line
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NoConn ~ 14325 1400
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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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13425 3450 13425 3000
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Entry Wire Line
13325 3450 13425 3550
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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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
14875 4700 14775 4800
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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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Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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Wire Wire Line
14875 5700 15325 5700
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Entry Wire Line
14875 5600 14775 5700
Entry Wire Line
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Entry Wire Line
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Entry Wire Line
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NoConn ~ 15325 7900
NoConn ~ 15325 8000
NoConn ~ 15325 6300
NoConn ~ 15325 6500
NoConn ~ 15325 6700
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Text GLabel 4475 3000 3 60 Input ~ 0
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Text GLabel 11750 3000 3 60 Input ~ 0
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RC6502 Debug (Bus Monitor/Single Step)
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F 0 "U2" H 3600 6775 50 0000 C CNN
F 1 "74LS74" H 3750 6180 50 0000 C CNN
F 2 "" H 3450 6475 50 0001 C CNN
F 3 "" H 3450 6475 50 0001 C CNN
1 3450 6475
1 0 0 -1
$EndComp
$Comp
L 74LS74 U2
U 2 1 5C1FC0F1
P 6275 6875
F 0 "U2" H 6425 7175 50 0000 C CNN
F 1 "74LS74" H 6575 6580 50 0000 C CNN
F 2 "" H 6275 6875 50 0001 C CNN
F 3 "" H 6275 6875 50 0001 C CNN
2 6275 6875
1 0 0 -1
$EndComp
Text GLabel 6875 6675 2 60 Output ~ 0
RDY
Text GLabel 2775 6475 0 60 Output ~ 0
SYNC
NoConn ~ 6275 7425
Text GLabel 5525 6875 0 60 Input ~ 0
Phi0
$Comp
L SW_SPST SW3
U 1 1 5C1FCFE3
P 6550 6250
F 0 "SW3" H 6550 6375 50 0000 C CNN
F 1 "RUN" H 6550 6150 50 0000 C CNN
F 2 "" H 6550 6250 50 0001 C CNN
F 3 "" H 6550 6250 50 0001 C CNN
1 6550 6250
1 0 0 -1
$EndComp
Wire Wire Line
6275 6325 6275 6250
Wire Wire Line
6275 6250 6350 6250
Wire Wire Line
6750 6250 6825 6250
Wire Wire Line
6825 6250 6825 6325
$Comp
L GND #PWR019
U 1 1 5C1FD2D0
P 6825 6325
F 0 "#PWR019" H 6825 6075 50 0001 C CNN
F 1 "GND" H 6825 6175 50 0000 C CNN
F 2 "" H 6825 6325 50 0001 C CNN
F 3 "" H 6825 6325 50 0001 C CNN
1 6825 6325
1 0 0 -1
$EndComp
$Comp
L R R1
U 1 1 5C1FD595
P 5400 6450
F 0 "R1" V 5480 6450 50 0000 C CNN
F 1 "270" V 5400 6450 50 0000 C CNN
F 2 "" V 5330 6450 50 0001 C CNN
F 3 "" H 5400 6450 50 0001 C CNN
1 5400 6450
1 0 0 -1
$EndComp
$Comp
L GND #PWR020
U 1 1 5C1FD6F7
P 5625 6300
F 0 "#PWR020" H 5625 6050 50 0001 C CNN
F 1 "GND" H 5625 6150 50 0000 C CNN
F 2 "" H 5625 6300 50 0001 C CNN
F 3 "" H 5625 6300 50 0001 C CNN
1 5625 6300
1 0 0 -1
$EndComp
Wire Wire Line
5400 6300 5400 6225
Wire Wire Line
5400 6225 5625 6225
Wire Wire Line
5625 6225 5625 6300
Wire Wire Line
5400 6600 5400 6675
Wire Wire Line
4700 6675 5675 6675
Connection ~ 5400 6675
$Comp
L SW_Push_Dual SW1
U 1 1 5C1FDA5D
P 4500 6875
F 0 "SW1" H 4550 6975 50 0000 L CNN
F 1 "STEP" H 4500 6605 50 0000 C CNN
F 2 "" H 4500 7075 50 0001 C CNN
F 3 "" H 4500 7075 50 0001 C CNN
1 4500 6875
-1 0 0 1
$EndComp
Wire Wire Line
4050 6675 4300 6675
Wire Wire Line
4225 6675 4225 6875
Wire Wire Line
4225 6875 4300 6875
Connection ~ 4225 6675
Wire Wire Line
4700 6875 4775 6875
Wire Wire Line
4775 6875 4775 7100
Wire Wire Line
4775 7100 3450 7100
Wire Wire Line
3450 7100 3450 7025
Wire Wire Line
2775 6475 2850 6475
Wire Wire Line
3450 5750 3450 5925
Wire Wire Line
7175 5850 7175 7550
Wire Wire Line
7175 7075 6875 7075
$Comp
L SW_SPDT SW2
U 1 1 5C1FE5F4
P 4850 5750
F 0 "SW2" H 4850 5920 50 0000 C CNN
F 1 "SI/SC" H 4850 5550 50 0000 C CNN
F 2 "" H 4850 5750 50 0001 C CNN
F 3 "" H 4850 5750 50 0001 C CNN
1 4850 5750
1 0 0 -1
$EndComp
Wire Wire Line
3450 5750 4650 5750
Wire Wire Line
5050 5850 7175 5850
NoConn ~ 5050 5650
Text GLabel 15125 6800 0 60 Input ~ 0
RDY
Text GLabel 15125 6900 0 60 Input ~ 0
SYNC
Text GLabel 15125 6400 0 60 Output ~ 0
Phi0
Wire Wire Line
15125 6900 15325 6900
Wire Wire Line
15125 6800 15325 6800
Wire Wire Line
15125 6400 15325 6400
NoConn ~ 15325 6200
$Comp
L GND #PWR021
U 1 1 5C20075F
P 15175 6150
F 0 "#PWR021" H 15175 5900 50 0001 C CNN
F 1 "GND" H 15175 6000 50 0000 C CNN
F 2 "" H 15175 6150 50 0001 C CNN
F 3 "" H 15175 6150 50 0001 C CNN
1 15175 6150
1 0 0 -1
$EndComp
Wire Wire Line
15175 6000 15325 6000
$Comp
L VCC #PWR022
U 1 1 5C2009A3
P 15075 6100
F 0 "#PWR022" H 15075 5950 50 0001 C CNN
F 1 "VCC" H 15075 6250 50 0000 C CNN
F 2 "" H 15075 6100 50 0001 C CNN
F 3 "" H 15075 6100 50 0001 C CNN
1 15075 6100
1 0 0 -1
$EndComp
Wire Wire Line
15175 6000 15175 6150
Wire Wire Line
15075 6100 15325 6100
NoConn ~ 2850 6275
NoConn ~ 4050 6275
$Comp
L SW_SPDT SW4
U 1 1 5C2011C9
P 7450 7650
F 0 "SW4" H 7450 7820 50 0000 C CNN
F 1 "LE_SEL" H 7450 7450 50 0000 C CNN
F 2 "" H 7450 7650 50 0001 C CNN
F 3 "" H 7450 7650 50 0001 C CNN
1 7450 7650
-1 0 0 1
$EndComp
Connection ~ 7175 7075
Wire Wire Line
7175 7550 7250 7550
Wire Wire Line
5525 6875 5675 6875
Wire Wire Line
5600 6875 5600 7750
Wire Wire Line
5600 7750 7250 7750
Connection ~ 5600 6875
Text GLabel 7725 7650 2 60 Output ~ 0
~LE
Wire Wire Line
7650 7650 7725 7650
Text Notes 11875 10300 0 60 ~ 0
RC6502 Debug card, adding bus monitor features and a single step circuit to the\ncomputer in order to aid with software and hardware development. Based on schematic\nincluded in the original Apple 1 manual.
Exported schematic to pdf
2018-12-25 16:19:18 +00:00
$Comp
L SW_Push_SPDT SW?
U 1 1 5C205A95
P 4475 7425
F 0 "SW?" H 4475 7595 50 0000 C CNN
F 1 "SW_Push_SPDT" H 4475 7225 50 0000 C CNN
F 2 "" H 4475 7425 50 0001 C CNN
F 3 "" H 4475 7425 50 0001 C CNN
1 4475 7425
1 0 0 -1
$EndComp
Added schematic for a bus monitor and single stepping card.
2018-12-23 00:12:41 +00:00
$EndSCHEMATC
Reference in New Issue Copy Permalink