F 2 "Pin_Headers:Pin_Header_Angled_1x39_Pitch2.54mm" H 14925 5000 50 0001 C CNN
F 3 "" H 14925 5000 50 0001 C CNN
1 14925 5000
1 0 0 -1
$EndComp
Wire Bus Line
13900 5800 14225 5800
Wire Wire Line
14025 4700 14025 4775
Entry Wire Line
14325 4900 14225 5000
Wire Wire Line
14325 4900 14725 4900
Entry Wire Line
14325 5000 14225 5100
Wire Wire Line
14325 5000 14725 5000
Text Label 14700 5000 2 60 ~ 0
~RESET
Entry Wire Line
14325 5100 14225 5200
Wire Wire Line
14325 5100 14725 5100
Entry Wire Line
14325 6900 14225 7000
Entry Wire Line
14325 6800 14225 6900
Entry Wire Line
14325 6700 14225 6800
Entry Wire Line
14325 6600 14225 6700
Entry Wire Line
14325 6500 14225 6600
Wire Wire Line
14325 6900 14725 6900
Wire Wire Line
14325 6800 14725 6800
Wire Wire Line
14325 6700 14725 6700
Wire Wire Line
14325 6600 14725 6600
Wire Wire Line
14325 6500 14725 6500
Text Label 14700 6500 2 60 ~ 0
PIN35
Text Label 14700 6600 2 60 ~ 0
PIN36
Text Label 14700 6700 2 60 ~ 0
PIN37
Text Label 14700 6900 2 60 ~ 0
PIN39
Wire Bus Line
13900 875 13900 5800
Entry Wire Line
10500 5300 10400 5400
Text Label 10875 5300 2 60 ~ 0
~NMI
Text Label 10875 6400 2 60 ~ 0
D7
Text Label 10875 6300 2 60 ~ 0
D6
Text Label 10875 6200 2 60 ~ 0
D5
Text Label 10875 6100 2 60 ~ 0
D4
Text Label 10875 6000 2 60 ~ 0
D3
Text Label 10875 5900 2 60 ~ 0
D2
Text Label 10875 5800 2 60 ~ 0
D1
Text Label 10875 5700 2 60 ~ 0
D0
Text Label 10875 5600 2 60 ~ 0
SYNC
Text Label 10875 5500 2 60 ~ 0
~RDY
Text Label 10875 5400 2 60 ~ 0
R/~W
Text Label 10875 5200 2 60 ~ 0
~IRQ
Entry Wire Line
10500 6400 10400 6500
Entry Wire Line
10500 6300 10400 6400
Entry Wire Line
10500 6200 10400 6300
Entry Wire Line
10500 6100 10400 6200
Entry Wire Line
10500 6000 10400 6100
Entry Wire Line
10500 5900 10400 6000
Entry Wire Line
10500 5800 10400 5900
Entry Wire Line
10500 5700 10400 5800
Entry Wire Line
10500 5600 10400 5700
Entry Wire Line
10500 5500 10400 5600
Entry Wire Line
10500 5400 10400 5500
Entry Wire Line
10500 5200 10400 5300
Text Label 10875 3100 2 60 ~ 0
A15
Text Label 10875 3200 2 60 ~ 0
A14
Text Label 10875 3300 2 60 ~ 0
A13
Text Label 10875 3400 2 60 ~ 0
A12
Entry Wire Line
10400 4400 10500 4500
Entry Wire Line
10400 4300 10500 4400
Entry Wire Line
10400 4200 10500 4300
Entry Wire Line
10400 4100 10500 4200
Text Label 10875 3500 2 60 ~ 0
A11
Text Label 10875 3600 2 60 ~ 0
A10
Text Label 10875 3700 2 60 ~ 0
A9
Text Label 10875 3800 2 60 ~ 0
A8
Text Label 10875 3900 2 60 ~ 0
A7
Text Label 10875 4000 2 60 ~ 0
A6
Text Label 10875 4100 2 60 ~ 0
A5
Text Label 10875 4200 2 60 ~ 0
A4
Text Label 10875 4300 2 60 ~ 0
A3
Text Label 10875 4400 2 60 ~ 0
A2
Text Label 10875 4500 2 60 ~ 0
A1
Text Label 10875 4600 2 60 ~ 0
A0
Entry Wire Line
10400 4500 10500 4600
Entry Wire Line
10400 4000 10500 4100
Entry Wire Line
10400 3900 10500 4000
Entry Wire Line
10400 3800 10500 3900
Entry Wire Line
10400 3700 10500 3800
Entry Wire Line
10400 3600 10500 3700
Entry Wire Line
10400 3500 10500 3600
Entry Wire Line
10400 3400 10500 3500
Entry Wire Line
10400 3300 10500 3400
Entry Wire Line
10400 3200 10500 3300
Entry Wire Line
10400 3100 10500 3200
Entry Wire Line
10400 3000 10500 3100
$Comp
L VCC #PWR03
U 1 1 5DD0D2FE
P 10275 4575
F 0 "#PWR03" H 10275 4425 50 0001 C CNN
F 1 "VCC" H 10275 4725 50 0000 C CNN
F 2 "" H 10275 4575 50 0001 C CNN
F 3 "" H 10275 4575 50 0001 C CNN
1 10275 4575
1 0 0 -1
$EndComp
$Comp
L GND #PWR04
U 1 1 5DD0D304
P 10200 4775
F 0 "#PWR04" H 10200 4525 50 0001 C CNN
F 1 "GND" H 10200 4625 50 0000 C CNN
F 2 "" H 10200 4775 50 0001 C CNN
F 3 "" H 10200 4775 50 0001 C CNN
1 10200 4775
1 0 0 -1
$EndComp
Wire Wire Line
10900 5300 10500 5300
Wire Bus Line
10400 3800 10075 3800
Wire Bus Line
10400 5000 10400 7000
Wire Bus Line
10400 3000 10400 4500
Wire Wire Line
10500 6400 10900 6400
Wire Wire Line
10500 6300 10900 6300
Wire Wire Line
10500 6200 10900 6200
Wire Wire Line
10500 6100 10900 6100
Wire Wire Line
10500 6000 10900 6000
Wire Wire Line
10500 5900 10900 5900
Wire Wire Line
10500 5800 10900 5800
Wire Wire Line
10500 5700 10900 5700
Wire Wire Line
10500 5600 10900 5600
Wire Wire Line
10500 5500 10900 5500
Wire Wire Line
10500 5400 10900 5400
Wire Wire Line
10500 5200 10900 5200
Wire Wire Line
10500 4500 10900 4500
Wire Wire Line
10500 4400 10900 4400
Wire Wire Line
10500 4300 10900 4300
Wire Wire Line
10500 4200 10900 4200
Wire Wire Line
10500 4600 10900 4600
Wire Wire Line
10500 4100 10900 4100
Wire Wire Line
10500 4000 10900 4000
Wire Wire Line
10500 3900 10900 3900
Wire Wire Line
10500 3800 10900 3800
Wire Wire Line
10500 3700 10900 3700
Wire Wire Line
10500 3600 10900 3600
Wire Wire Line
10500 3500 10900 3500
Wire Wire Line
10500 3400 10900 3400
Wire Wire Line
10500 3300 10900 3300
Wire Wire Line
10500 3200 10900 3200
Wire Wire Line
10500 3100 10900 3100
Wire Wire Line
10275 4800 10900 4800
Wire Wire Line
10275 4575 10275 4800
Wire Wire Line
10200 4700 10900 4700
$Comp
L RC1_Backplane J3
U 1 1 5DD0D32D
P 11100 5000
F 0 "J3" H 11100 7000 50 0000 C CNN
F 1 "SBC" V 11550 4950 50 0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x39_Pitch2.54mm" H 11100 5000 50 0001 C CNN
F 3 "" H 11100 5000 50 0001 C CNN
1 11100 5000
1 0 0 -1
$EndComp
Wire Bus Line
10075 5800 10400 5800
Wire Wire Line
10200 4700 10200 4775
Entry Wire Line
10500 4900 10400 5000
Wire Wire Line
10500 4900 10900 4900
Entry Wire Line
10500 5000 10400 5100
Wire Wire Line
10500 5000 10900 5000
Text Label 10875 4900 2 60 ~ 0
PHI2
Text Label 10875 5000 2 60 ~ 0
~RESET
Entry Wire Line
10500 5100 10400 5200
Wire Wire Line
10500 5100 10900 5100
Entry Wire Line
10500 6900 10400 7000
Entry Wire Line
10500 6800 10400 6900
Entry Wire Line
10500 6700 10400 6800
Entry Wire Line
10500 6600 10400 6700
Entry Wire Line
10500 6500 10400 6600
Wire Wire Line
10500 6900 10900 6900
Wire Wire Line
10500 6800 10900 6800
Wire Wire Line
10500 6700 10900 6700
Wire Wire Line
10500 6600 10900 6600
Wire Wire Line
10500 6500 10900 6500
Text Label 10875 6500 2 60 ~ 0
PIN35
Text Label 10875 6600 2 60 ~ 0
PIN36
Text Label 10875 6700 2 60 ~ 0
PIN37
Text Label 10875 6800 2 60 ~ 0
~IO3
Text Label 10875 6900 2 60 ~ 0
PIN39
Wire Bus Line
10075 875 10075 5800
$Comp
L C_Small C1
U 1 1 5DD0E0B6
P 10975 10550
F 0 "C1" H 10985 10620 50 0000 L CNN
F 1 "100nF" H 10985 10470 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 10975 10550 50 0001 C CNN
F 3 "" H 10975 10550 50 0001 C CNN
1 10975 10550
1 0 0 -1
$EndComp
$Comp
L C_Small C2
U 1 1 5DD0E10C
P 11250 10550
F 0 "C2" H 11260 10620 50 0000 L CNN
F 1 "100nF" H 11260 10470 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 11250 10550 50 0001 C CNN
F 3 "" H 11250 10550 50 0001 C CNN
1 11250 10550
1 0 0 -1
$EndComp
Wire Wire Line
10975 10300 10975 10450
Wire Wire Line
10975 10375 11525 10375
Wire Wire Line
11250 10375 11250 10450
Wire Wire Line
10975 10650 10975 10725
Wire Wire Line
10975 10725 11525 10725
Wire Wire Line
11525 10650 11525 10800
$Comp
L GND #PWR05
U 1 1 5DD0E2DE
P 11525 10800
F 0 "#PWR05" H 11525 10550 50 0001 C CNN
F 1 "GND" H 11525 10650 50 0000 C CNN
F 2 "" H 11525 10800 50 0001 C CNN
F 3 "" H 11525 10800 50 0001 C CNN
1 11525 10800
1 0 0 -1
$EndComp
Connection ~ 11250 10725
$Comp
L VCC #PWR06
U 1 1 5DD0E425
P 10975 10300
F 0 "#PWR06" H 10975 10150 50 0001 C CNN
F 1 "VCC" H 10975 10450 50 0000 C CNN
F 2 "" H 10975 10300 50 0001 C CNN
F 3 "" H 10975 10300 50 0001 C CNN
1 10975 10300
1 0 0 -1
$EndComp
Connection ~ 10975 10375
$Comp
L C_Small C3
U 1 1 5DD0EC50
P 11525 10550
F 0 "C3" H 11535 10620 50 0000 L CNN
F 1 "100nF" H 11535 10470 50 0000 L CNN
F 2 "Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 11525 10550 50 0001 C CNN
F 3 "" H 11525 10550 50 0001 C CNN
1 11525 10550
1 0 0 -1
$EndComp
Wire Wire Line
11250 10725 11250 10650
Connection ~ 11525 10725
Wire Wire Line
11525 10375 11525 10450
Connection ~ 11250 10375
Text Notes 11850 10350 0 60 ~ 0
After building a few things on breadboards with a microcontroller, I wanted to do the\nsame with the computer instead so I created this as an easy work-surface to do those\nkind of things. This platform board has been adapted for use with my 6502 and 68xx-\nbased SBCs.
Text Label 14700 4900 2 60 ~ 0
PHI2
Text Label 14700 5100 2 60 ~ 0
PHI0
Text Label 10875 5100 2 60 ~ 0
PHI0
$Comp
L Breadboard BB1
U 1 1 5DE6F52B
P 6975 5300
F 0 "BB1" H 6975 5775 60 0000 C CNN
F 1 "Breadboard" H 6975 4875 60 0000 C CNN
F 2 "breadboard:RND 255-00005" H 6925 5300 60 0001 C CNN
F 3 "" H 6925 5300 60 0001 C CNN
1 6975 5300
1 0 0 -1
$EndComp
$Comp
L 6522 U2
U 1 1 5DE6FB82
P 4150 5300
F 0 "U2" H 3825 6375 60 0000 C CNN
F 1 "6522" V 4150 5200 60 0000 C CNN
F 2 "Housings_DIP:DIP-40_W15.24mm_Socket_LongPads" H 3650 5500 60 0001 C CNN
F 3 "" H 3650 5500 60 0000 C CNN
1 4150 5300
-1 0 0 -1
$EndComp
$Comp
L VCC #PWR07
U 1 1 5DE70879
P 4150 4025
F 0 "#PWR07" H 4150 3875 50 0001 C CNN
F 1 "VCC" H 4150 4175 50 0000 C CNN
F 2 "" H 4150 4025 50 0001 C CNN
F 3 "" H 4150 4025 50 0001 C CNN
1 4150 4025
-1 0 0 -1
$EndComp
$Comp
L GND #PWR08
U 1 1 5DE70A6F
P 4150 6475
F 0 "#PWR08" H 4150 6225 50 0001 C CNN
F 1 "GND" H 4150 6325 50 0000 C CNN
F 2 "" H 4150 6475 50 0001 C CNN
F 3 "" H 4150 6475 50 0001 C CNN
1 4150 6475
-1 0 0 -1
$EndComp
Text Label 2925 5475 0 60 ~ 0
A3
Text Label 2925 5375 0 60 ~ 0
A2
Text Label 2925 5275 0 60 ~ 0
A1
Text Label 2925 5175 0 60 ~ 0
A0
Wire Wire Line
2900 5275 3425 5275
Wire Wire Line
2900 5375 3425 5375
Wire Wire Line
2900 5475 3425 5475
Wire Wire Line
2900 5175 3425 5175
Text Label 2925 4775 0 60 ~ 0
~RESET
Text Label 2925 6275 0 60 ~ 0
D7
Text Label 2925 6175 0 60 ~ 0
D6
Text Label 2925 6075 0 60 ~ 0
D5
Text Label 2925 5975 0 60 ~ 0
D4
Text Label 2925 5875 0 60 ~ 0
D3
Text Label 2925 5775 0 60 ~ 0
D2
Text Label 2925 5675 0 60 ~ 0
D1
Text Label 2925 5575 0 60 ~ 0
D0
Wire Wire Line
2900 6275 3425 6275
Wire Wire Line
2900 6175 3425 6175
Wire Wire Line
2900 6075 3425 6075
Wire Wire Line
2900 5975 3425 5975
Wire Wire Line
2900 5875 3425 5875
Wire Wire Line
2900 5775 3425 5775
Wire Wire Line
2900 5675 3425 5675
Wire Wire Line
2900 5575 3425 5575
Wire Wire Line
2900 4775 3425 4775
Text Label 1175 4250 0 60 ~ 0
PHI2
Text Label 2925 4875 0 60 ~ 0
R/~W
Wire Wire Line
2900 4875 3425 4875
$Comp
L Jumper_NO_Small JP1
U 1 1 5DE720C4
P 3325 4975
F 0 "JP1" H 3225 5025 50 0000 C CNN
F 1 "VIA_IRQ" H 3325 4925 50 0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm" H 3325 4975 50 0001 C CNN
F 3 "" H 3325 4975 50 0001 C CNN
1 3325 4975
1 0 0 -1
$EndComp
Text Label 2925 4975 0 60 ~ 0
~IRQ
Wire Wire Line
2900 4975 3225 4975
Entry Wire Line
2900 4775 2800 4875
Entry Wire Line
2900 4875 2800 4975
Entry Wire Line
2900 4975 2800 5075
Entry Wire Line
2900 5175 2800 5275
Entry Wire Line
2900 5275 2800 5375
Entry Wire Line
2900 5375 2800 5475
Entry Wire Line
2900 5475 2800 5575
Entry Wire Line
2900 5575 2800 5675
Entry Wire Line
2900 5675 2800 5775
Entry Wire Line
2900 5775 2800 5875
Entry Wire Line
2900 5875 2800 5975
Entry Wire Line
2900 5975 2800 6075
Entry Wire Line
2900 6075 2800 6175
Entry Wire Line
2900 6175 2800 6275
Entry Wire Line
2900 6275 2800 6375
Text Label 14700 6800 2 60 ~ 0
~IO3
Wire Wire Line
4150 4025 4150 4175
Wire Wire Line
4150 4100 3350 4100
Wire Wire Line
3350 4100 3350 4375
Wire Wire Line
3350 4375 3425 4375
Connection ~ 4150 4100
$Comp
L Conn_01x10 J5
U 1 1 5DE736F3
P 5525 4575
F 0 "J5" H 5525 5075 50 0000 C CNN
F 1 "Port A" H 5525 3975 50 0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x10_Pitch2.54mm" H 5525 4575 50 0001 C CNN
F 3 "" H 5525 4575 50 0001 C CNN
1 5525 4575
1 0 0 -1
$EndComp
$Comp
L Conn_01x10 J6
U 1 1 5DE7382E
P 5525 5975
F 0 "J6" H 5525 6475 50 0000 C CNN
F 1 "Port B" H 5525 5375 50 0000 C CNN
F 2 "Pin_Headers:Pin_Header_Straight_1x10_Pitch2.54mm" H 5525 5975 50 0001 C CNN
F 3 "" H 5525 5975 50 0001 C CNN
1 5525 5975
1 0 0 -1
$EndComp
Wire Wire Line
5250 5275 4875 5275
Wire Wire Line
5250 5075 5250 5275
Wire Wire Line
5225 4975 5225 5175
Wire Wire Line
5225 5175 4875 5175
Wire Wire Line
5200 5075 4875 5075
Wire Wire Line
5200 4875 5200 5075
Wire Wire Line
5175 4975 4875 4975
Wire Wire Line
5175 4775 5175 4975
Wire Wire Line
5150 4675 5150 4875
Wire Wire Line
5150 4875 4875 4875
Wire Wire Line
5125 4775 4875 4775
Wire Wire Line
5125 4575 5125 4775
Wire Wire Line
5100 4675 4875 4675
Wire Wire Line
5100 4475 5100 4675
Wire Wire Line
5075 4575 4875 4575
Wire Wire Line
5075 4375 5075 4575
Wire Wire Line
5050 4475 4875 4475
Wire Wire Line
5050 4275 5050 4475
Wire Wire Line
4875 4375 5025 4375
Wire Wire Line
5025 4375 5025 4175
Wire Wire Line
5025 4175 5325 4175
Wire Wire Line
5325 4275 5050 4275
Wire Wire Line
5325 4375 5075 4375
Wire Wire Line
5325 4475 5100 4475
Wire Wire Line
5325 4575 5125 4575
Wire Wire Line
5325 4675 5150 4675
Wire Wire Line
5325 4775 5175 4775
Wire Wire Line
5325 4875 5200 4875
Wire Wire Line
5325 4975 5225 4975
Wire Wire Line
5325 5075 5250 5075
Wire Wire Line
4875 5375 5250 5375
Wire Wire Line
5250 5375 5250 5575
Wire Wire Line
5250 5575 5325 5575
Wire Wire Line
5325 5675 5225 5675
Wire Wire Line
5225 5675 5225 5475
Wire Wire Line
5225 5475 4875 5475
Wire Wire Line
5325 5775 5200 5775
Wire Wire Line
5200 5775 5200 5575
Wire Wire Line
5200 5575 4875 5575
Wire Wire Line
4875 5675 5175 5675
Wire Wire Line
5175 5675 5175 5875
Wire Wire Line
5175 5875 5325 5875
Wire Wire Line
5325 5975 5150 5975
Wire Wire Line
5150 5975 5150 5775
Wire Wire Line
5150 5775 4875 5775
Wire Wire Line
4875 5875 5125 5875
Wire Wire Line
5125 5875 5125 6075
Wire Wire Line
5125 6075 5325 6075
Wire Wire Line
5325 6175 5100 6175
Wire Wire Line
5100 6175 5100 5975
Wire Wire Line
5100 5975 4875 5975
Wire Wire Line
4875 6075 5075 6075
Wire Wire Line
5075 6075 5075 6275
Wire Wire Line
5075 6275 5325 6275
Wire Wire Line
5325 6375 5050 6375
Wire Wire Line
5050 6375 5050 6175
Wire Wire Line
5050 6175 4875 6175
Wire Wire Line
4875 6275 5025 6275
Wire Wire Line
5025 6275 5025 6475
Wire Wire Line
5025 6475 5325 6475
Wire Bus Line
2800 4875 2800 6375
$Comp
L 74LS138 U1
U 1 1 5DE7616E
P 1925 2650
F 0 "U1" H 1925 2650 50 0000 C CNN
F 1 "74LS138" H 1925 2150 50 0000 C CNN
F 2 "Housings_DIP:DIP-16_W7.62mm_Socket_LongPads" H 1925 2650 50 0001 C CNN