EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr USLetter 11000 8500
encoding utf-8
Sheet 1 1
Title "RAM128 (GW4208A)"
Date "2020-09-11"
Rev "1.0"
Comp "Garrett's Workshop"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L power:+5V #PWR0120
U 1 1 607FA428
P 3250 6900
F 0 "#PWR0120" H 3250 6750 50  0001 C CNN
F 1 "+5V" H 3250 7050 50  0000 C CNN
F 2 "" H 3250 6900 50  0001 C CNN
F 3 "" H 3250 6900 50  0001 C CNN
	1    3250 6900
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C4
U 1 1 607FA429
P 4450 7000
F 0 "C4" H 4500 7050 50  0000 L CNN
F 1 "2u2" H 4500 6950 50  0000 L CNN
F 2 "stdpads:C_0805" H 4450 7000 50  0001 C CNN
F 3 "~" H 4450 7000 50  0001 C CNN
	1    4450 7000
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C1
U 1 1 5D136B08
P 3250 7000
F 0 "C1" H 3300 7050 50  0000 L CNN
F 1 "2u2" H 3300 6950 50  0000 L CNN
F 2 "stdpads:C_0805" H 3250 7000 50  0001 C CNN
F 3 "~" H 3250 7000 50  0001 C CNN
	1    3250 7000
	1    0    0    -1  
$EndComp
Connection ~ 3650 6900
Wire Wire Line
	3650 6900 4050 6900
Wire Wire Line
	3650 7100 4050 7100
$Comp
L Device:C_Small C3
U 1 1 5D14D1AA
P 4050 7000
F 0 "C3" H 4100 7050 50  0000 L CNN
F 1 "2u2" H 4100 6950 50  0000 L CNN
F 2 "stdpads:C_0805" H 4050 7000 50  0001 C CNN
F 3 "~" H 4050 7000 50  0001 C CNN
	1    4050 7000
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C2
U 1 1 5D14D1B0
P 3650 7000
F 0 "C2" H 3700 7050 50  0000 L CNN
F 1 "2u2" H 3700 6950 50  0000 L CNN
F 2 "stdpads:C_0805" H 3650 7000 50  0001 C CNN
F 3 "~" H 3650 7000 50  0001 C CNN
	1    3650 7000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3250 7100 3650 7100
Connection ~ 3650 7100
Wire Wire Line
	3650 6900 3250 6900
Connection ~ 4050 6900
Wire Wire Line
	4050 6900 4450 6900
Connection ~ 4050 7100
Wire Wire Line
	4050 7100 4450 7100
Connection ~ 3250 6900
Wire Wire Line
	3400 6400 3100 6400
Connection ~ 3400 6400
Wire Wire Line
	3100 6400 2800 6400
Connection ~ 3100 6400
Wire Wire Line
	2800 6400 2500 6400
Connection ~ 2800 6400
Connection ~ 3700 6400
Wire Wire Line
	3700 6400 3400 6400
$Comp
L power:GND #PWR0132
U 1 1 607FA437
P 3700 6400
F 0 "#PWR0132" H 3700 6150 50  0001 C CNN
F 1 "GND" H 3705 6227 50  0000 C CNN
F 2 "" H 3700 6400 50  0001 C CNN
F 3 "" H 3700 6400 50  0001 C CNN
	1    3700 6400
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:MountingHole_Pad H5
U 1 1 5CC871F0
P 3700 6300
F 0 "H5" H 3800 6351 50  0000 L CNN
F 1 " " H 3800 6260 50  0000 L CNN
F 2 "stdpads:PasteHole_1.1mm_PTH" H 3700 6300 50  0001 C CNN
F 3 "~" H 3700 6300 50  0001 C CNN
	1    3700 6300
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:MountingHole_Pad H4
U 1 1 5CC7E0C0
P 3400 6300
F 0 "H4" H 3500 6351 50  0000 L CNN
F 1 " " H 3500 6260 50  0000 L CNN
F 2 "stdpads:PasteHole_1.1mm_PTH" H 3400 6300 50  0001 C CNN
F 3 "~" H 3400 6300 50  0001 C CNN
	1    3400 6300
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:MountingHole_Pad H3
U 1 1 607FA435
P 3100 6300
F 0 "H3" H 3200 6351 50  0000 L CNN
F 1 " " H 3200 6260 50  0000 L CNN
F 2 "stdpads:PasteHole_1.1mm_PTH" H 3100 6300 50  0001 C CNN
F 3 "~" H 3100 6300 50  0001 C CNN
	1    3100 6300
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:MountingHole_Pad H2
U 1 1 607FA434
P 2800 6300
F 0 "H2" H 2900 6351 50  0000 L CNN
F 1 " " H 2900 6260 50  0000 L CNN
F 2 "stdpads:PasteHole_1.1mm_PTH" H 2800 6300 50  0001 C CNN
F 3 "~" H 2800 6300 50  0001 C CNN
	1    2800 6300
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:MountingHole_Pad H1
U 1 1 607FA433
P 2500 6300
F 0 "H1" H 2600 6351 50  0000 L CNN
F 1 " " H 2600 6260 50  0000 L CNN
F 2 "stdpads:PasteHole_1.1mm_PTH" H 2500 6300 50  0001 C CNN
F 3 "~" H 2500 6300 50  0001 C CNN
	1    2500 6300
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0109
U 1 1 5D120CE1
P 1750 1800
F 0 "#PWR0109" H 1750 1650 50  0001 C CNN
F 1 "+5V" V 1750 2000 50  0000 C CNN
F 2 "" H 1750 1800 50  0001 C CNN
F 3 "" H 1750 1800 50  0001 C CNN
	1    1750 1800
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR0108
U 1 1 5D11FEA8
P 1250 1800
F 0 "#PWR0108" H 1250 1550 50  0001 C CNN
F 1 "GND" V 1250 1600 50  0000 C CNN
F 2 "" H 1250 1800 50  0001 C CNN
F 3 "" H 1250 1800 50  0001 C CNN
	1    1250 1800
	0    1    -1   0   
$EndComp
$Comp
L power:+12V #PWR0103
U 1 1 5CFFF62F
P 1250 4200
F 0 "#PWR0103" H 1250 4050 50  0001 C CNN
F 1 "+12V" V 1150 4150 50  0000 L CNN
F 2 "" H 1250 4200 50  0001 C CNN
F 3 "" H 1250 4200 50  0001 C CNN
	1    1250 4200
	0    -1   -1   0   
$EndComp
Text Label 1250 4100 2    50   ~ 0
D0
Text Label 1250 4000 2    50   ~ 0
D1
Text Label 1250 3900 2    50   ~ 0
D2
Text Label 1250 3800 2    50   ~ 0
D3
Text Label 1250 3700 2    50   ~ 0
D4
Text Label 1250 3600 2    50   ~ 0
D5
Text Label 1250 3500 2    50   ~ 0
D6
Text Label 1250 3400 2    50   ~ 0
D7
Text Label 1250 3300 2    50   ~ 0
~DEVSEL~
Text Label 1250 3200 2    50   ~ 0
PHI0
Text Label 1250 3100 2    50   ~ 0
USER1
Text Label 1250 3000 2    50   ~ 0
PHI1
Text Label 1250 2900 2    50   ~ 0
Q3
Text Label 1250 2800 2    50   ~ 0
7M
Text Label 1250 2700 2    50   ~ 0
COLORREF
$Comp
L power:-12V #PWR0102
U 1 1 5CFEEC44
P 1250 2500
F 0 "#PWR0102" H 1250 2600 50  0001 C CNN
F 1 "-12V" V 1250 2650 50  0000 L CNN
F 2 "" H 1250 2500 50  0001 C CNN
F 3 "" H 1250 2500 50  0001 C CNN
	1    1250 2500
	0    -1   -1   0   
$EndComp
$Comp
L power:-5V #PWR0101
U 1 1 5CFEFECE
P 1250 2600
F 0 "#PWR0101" H 1250 2700 50  0001 C CNN
F 1 "-5V" V 1250 2750 50  0000 L CNN
F 2 "" H 1250 2600 50  0001 C CNN
F 3 "" H 1250 2600 50  0001 C CNN
	1    1250 2600
	0    -1   -1   0   
$EndComp
$Comp
L Connector_Generic:Conn_02x25_Counter_Clockwise J1
U 1 1 5CFC517D
P 1550 3000
F 0 "J1" H 1600 1575 50  0000 C CNN
F 1 "AppleIIBus" H 1600 1666 50  0000 C CNN
F 2 "stdpads:AppleIIBus_Edge" H 1550 3000 50  0001 C CNN
F 3 "~" H 1550 3000 50  0001 C CNN
	1    1550 3000
	-1   0    0    1   
$EndComp
Text Label 1250 2400 2    50   ~ 0
~INH~
Text Label 1250 2300 2    50   ~ 0
~RES~
Text Label 1250 2200 2    50   ~ 0
~IRQ~
Text Label 1250 2100 2    50   ~ 0
~NMI~
Text Label 1250 2000 2    50   ~ 0
INTin
Text Label 1250 1900 2    50   ~ 0
DMAin
Text Label 1750 1900 0    50   ~ 0
DMAout
Text Label 1750 2000 0    50   ~ 0
INTout
Text Label 1750 2100 0    50   ~ 0
DMA
Text Label 1750 2200 0    50   ~ 0
RDY
Text Label 1750 2300 0    50   ~ 0
~IOSTRB~
Text Label 1750 2400 0    50   ~ 0
VIDSYNC
Text Label 1750 2500 0    50   ~ 0
R~W~
Text Label 1750 2600 0    50   ~ 0
A15
Text Label 1750 2700 0    50   ~ 0
A14
Text Label 1750 2800 0    50   ~ 0
A13
Text Label 1750 2900 0    50   ~ 0
A12
Text Label 1750 3000 0    50   ~ 0
A11
Text Label 1750 3100 0    50   ~ 0
A10
Text Label 1750 3200 0    50   ~ 0
A9
Text Label 1750 3300 0    50   ~ 0
A8
Text Label 1750 3400 0    50   ~ 0
A7
Text Label 1750 3500 0    50   ~ 0
A6
Text Label 1750 3600 0    50   ~ 0
A5
Text Label 1750 3700 0    50   ~ 0
A4
Text Label 1750 3800 0    50   ~ 0
A3
Text Label 1750 3900 0    50   ~ 0
A2
Text Label 1750 4000 0    50   ~ 0
A1
Text Label 1750 4100 0    50   ~ 0
A0
Text Label 1750 4200 0    50   ~ 0
~IOSEL~
$Comp
L Device:C_Small C5
U 1 1 5E8640A9
P 2850 7000
F 0 "C5" H 2900 7050 50  0000 L CNN
F 1 "2u2" H 2900 6950 50  0000 L CNN
F 2 "stdpads:C_0805" H 2850 7000 50  0001 C CNN
F 3 "~" H 2850 7000 50  0001 C CNN
	1    2850 7000
	1    0    0    -1  
$EndComp
$Comp
L power:+12V #PWR0128
U 1 1 5E875A47
P 2850 6900
F 0 "#PWR0128" H 2850 6750 50  0001 C CNN
F 1 "+12V" H 2850 7050 50  0000 C CNN
F 2 "" H 2850 6900 50  0001 C CNN
F 3 "" H 2850 6900 50  0001 C CNN
	1    2850 6900
	-1   0    0    -1  
$EndComp
Text Label 1450 4750 2    50   ~ 0
INTin
Text Label 1450 4650 2    50   ~ 0
DMAin
Text Label 1550 4650 0    50   ~ 0
DMAout
Text Label 1550 4750 0    50   ~ 0
INTout
Wire Wire Line
	1450 4650 1550 4650
Wire Wire Line
	1550 4750 1450 4750
$Comp
L Mechanical:Fiducial FID1
U 1 1 5D319AED
P 4450 6250
F 0 "FID1" H 4535 6296 50  0000 L CNN
F 1 "Fiducial" H 4535 6205 50  0000 L CNN
F 2 "stdpads:Fiducial" H 4450 6250 50  0001 C CNN
F 3 "~" H 4450 6250 50  0001 C CNN
	1    4450 6250
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:Fiducial FID2
U 1 1 5D321D2B
P 4450 6450
F 0 "FID2" H 4535 6496 50  0000 L CNN
F 1 "Fiducial" H 4535 6405 50  0000 L CNN
F 2 "stdpads:Fiducial" H 4450 6450 50  0001 C CNN
F 3 "~" H 4450 6450 50  0001 C CNN
	1    4450 6450
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:Fiducial FID3
U 1 1 5D321DA8
P 5050 6250
F 0 "FID3" H 5135 6296 50  0000 L CNN
F 1 "Fiducial" H 5135 6205 50  0000 L CNN
F 2 "stdpads:Fiducial" H 5050 6250 50  0001 C CNN
F 3 "~" H 5050 6250 50  0001 C CNN
	1    5050 6250
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:Fiducial FID4
U 1 1 5D322056
P 5050 6450
F 0 "FID4" H 5135 6496 50  0000 L CNN
F 1 "Fiducial" H 5135 6405 50  0000 L CNN
F 2 "stdpads:Fiducial" H 5050 6450 50  0001 C CNN
F 3 "~" H 5050 6450 50  0001 C CNN
	1    5050 6450
	1    0    0    -1  
$EndComp
$Comp
L Mechanical:Fiducial FID5
U 1 1 5D3223BF
P 5650 6450
F 0 "FID5" H 5735 6496 50  0000 L CNN
F 1 "Fiducial" H 5735 6405 50  0000 L CNN
F 2 "stdpads:Fiducial" H 5650 6450 50  0001 C CNN
F 3 "~" H 5650 6450 50  0001 C CNN
	1    5650 6450
	1    0    0    -1  
$EndComp
Entry Wire Line
	2250 3350 2350 3250
Entry Wire Line
	2250 3450 2350 3350
Entry Wire Line
	2250 3550 2350 3450
Entry Wire Line
	2250 3650 2350 3550
Entry Wire Line
	2250 3050 2350 2950
Entry Wire Line
	2250 3150 2350 3050
Entry Wire Line
	2250 3250 2350 3150
Entry Wire Line
	2050 3600 1950 3700
Entry Wire Line
	2050 3700 1950 3800
Entry Wire Line
	2050 3800 1950 3900
Entry Wire Line
	2050 3900 1950 4000
Entry Wire Line
	2050 4000 1950 4100
Entry Wire Line
	2050 3100 1950 3200
Entry Wire Line
	2050 3200 1950 3300
Entry Wire Line
	2050 3300 1950 3400
Entry Wire Line
	2050 3400 1950 3500
Entry Wire Line
	2050 3500 1950 3600
Entry Wire Line
	2050 2600 1950 2700
Entry Wire Line
	2050 2700 1950 2800
Entry Wire Line
	2050 2800 1950 2900
Entry Wire Line
	2050 2900 1950 3000
Entry Wire Line
	2050 3000 1950 3100
Entry Wire Line
	2050 2500 1950 2600
Wire Wire Line
	1750 2600 1950 2600
Wire Wire Line
	1750 2700 1950 2700
Wire Wire Line
	1750 2800 1950 2800
Wire Wire Line
	1750 2900 1950 2900
Wire Wire Line
	1750 3000 1950 3000
Wire Wire Line
	1750 3100 1950 3100
Wire Wire Line
	1750 3200 1950 3200
Wire Wire Line
	1750 3300 1950 3300
Wire Wire Line
	1750 3400 1950 3400
Wire Wire Line
	1750 3500 1950 3500
Wire Wire Line
	1750 3600 1950 3600
Wire Wire Line
	1750 3700 1950 3700
Wire Wire Line
	1750 3800 1950 3800
Wire Wire Line
	1750 3900 1950 3900
Wire Wire Line
	1750 4000 1950 4000
Wire Wire Line
	1750 4100 1950 4100
Entry Wire Line
	950  3900 1050 3800
Entry Wire Line
	950  3800 1050 3700
Entry Wire Line
	950  3700 1050 3600
Entry Wire Line
	950  3600 1050 3500
Entry Wire Line
	950  3500 1050 3400
Entry Wire Line
	950  4200 1050 4100
Entry Wire Line
	950  4100 1050 4000
Entry Wire Line
	950  4000 1050 3900
Wire Wire Line
	1050 3400 1250 3400
Wire Wire Line
	1050 3500 1250 3500
Wire Wire Line
	1050 3600 1250 3600
Wire Wire Line
	1050 3700 1250 3700
Wire Wire Line
	1050 3800 1250 3800
Wire Wire Line
	1050 3900 1250 3900
Wire Wire Line
	1050 4000 1250 4000
Wire Wire Line
	1050 4100 1250 4100
$Comp
L GW_RAM:SRAM-128Kx8-SOP-32 U2
U 1 1 5DE2589C
P 4450 3450
F 0 "U2" H 4450 3850 50  0000 C CNN
F 1 "621024" V 4450 3450 50  0000 C CNN
F 2 "stdpads:SOP-32_P1.27mm" H 4450 3450 50  0001 C CNN
F 3 "http://www.futurlec.com/Datasheet/Memory/628128.pdf" H 4450 3450 50  0001 C CNN
	1    4450 3450
	-1   0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0104
U 1 1 5DE402D0
P 2950 2550
F 0 "#PWR0104" H 2950 2400 50  0001 C CNN
F 1 "+5V" H 2950 2700 50  0000 C CNN
F 2 "" H 2950 2550 50  0001 C CNN
F 3 "" H 2950 2550 50  0001 C CNN
	1    2950 2550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0105
U 1 1 5DE41138
P 2950 4150
F 0 "#PWR0105" H 2950 3900 50  0001 C CNN
F 1 "GND" H 2950 4000 50  0000 C CNN
F 2 "" H 2950 4150 50  0001 C CNN
F 3 "" H 2950 4150 50  0001 C CNN
	1    2950 4150
	1    0    0    -1  
$EndComp
Entry Wire Line
	2250 2950 2350 2850
Text Label 2450 3550 2    50   ~ 0
D0
Text Label 2450 3450 2    50   ~ 0
D1
Text Label 2450 3350 2    50   ~ 0
D2
Text Label 2450 3250 2    50   ~ 0
D3
Text Label 2450 3150 2    50   ~ 0
D4
Text Label 2450 3050 2    50   ~ 0
D5
Text Label 2450 2950 2    50   ~ 0
D6
Text Label 2450 2850 2    50   ~ 0
D7
Wire Wire Line
	2350 2850 2450 2850
Wire Wire Line
	2350 2950 2450 2950
Wire Wire Line
	2350 3050 2450 3050
Wire Wire Line
	2350 3150 2450 3150
Wire Wire Line
	2350 3250 2450 3250
Wire Wire Line
	2350 3350 2450 3350
Wire Wire Line
	2350 3450 2450 3450
Wire Wire Line
	2350 3550 2450 3550
Text Label 3450 2850 0    50   ~ 0
RD0
Text Label 3450 2950 0    50   ~ 0
RD1
Text Label 3450 3050 0    50   ~ 0
RD2
Text Label 3450 3150 0    50   ~ 0
RD3
Text Label 3450 3250 0    50   ~ 0
RD4
Text Label 3450 3350 0    50   ~ 0
RD5
Text Label 3450 3450 0    50   ~ 0
RD6
Text Label 3450 3550 0    50   ~ 0
RD7
Wire Wire Line
	3650 3550 3450 3550
Wire Wire Line
	3650 3450 3450 3450
Wire Wire Line
	3650 3350 3450 3350
Wire Wire Line
	3650 3250 3450 3250
Wire Wire Line
	3650 3150 3450 3150
Wire Wire Line
	3650 3050 3450 3050
Text Label 4050 3150 2    50   ~ 0
RD0
Text Label 4050 3050 2    50   ~ 0
RD1
Text Label 4050 2950 2    50   ~ 0
RD2
Text Label 4050 2850 2    50   ~ 0
RD3
Wire Wire Line
	3850 2850 4050 2850
Wire Wire Line
	3850 2950 4050 2950
Wire Wire Line
	3850 3050 4050 3050
Wire Wire Line
	3850 3150 4050 3150
Wire Wire Line
	3850 3250 4050 3250
Wire Wire Line
	3850 3350 4050 3350
Wire Wire Line
	3850 3450 4050 3450
Wire Wire Line
	3850 3550 4050 3550
Entry Wire Line
	3650 2950 3750 2850
Entry Wire Line
	3650 3050 3750 2950
Entry Wire Line
	3650 3150 3750 3050
Entry Wire Line
	3650 3250 3750 3150
Entry Wire Line
	3650 3350 3750 3250
Entry Wire Line
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Entry Wire Line
	3750 2850 3850 2950
Entry Wire Line
	3750 2950 3850 3050
Entry Wire Line
	3750 3050 3850 3150
Entry Wire Line
	3750 3150 3850 3250
Entry Wire Line
	3750 3250 3850 3350
Entry Wire Line
	3750 3350 3850 3450
Entry Wire Line
	3750 3450 3850 3550
$Comp
L power:+5V #PWR0106
U 1 1 5DE88183
P 4050 2650
F 0 "#PWR0106" H 4050 2500 50  0001 C CNN
F 1 "+5V" H 4050 2800 50  0000 C CNN
F 2 "" H 4050 2650 50  0001 C CNN
F 3 "" H 4050 2650 50  0001 C CNN
	1    4050 2650
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0107
U 1 1 5DE887B9
P 4050 4250
F 0 "#PWR0107" H 4050 4000 50  0001 C CNN
F 1 "GND" H 4050 4100 50  0000 C CNN
F 2 "" H 4050 4250 50  0001 C CNN
F 3 "" H 4050 4250 50  0001 C CNN
	1    4050 4250
	1    0    0    -1  
$EndComp
Entry Wire Line
	3650 2850 3750 2750
Text Label 4850 3150 0    50   ~ 0
A11
Text Label 4850 3050 0    50   ~ 0
A10
Text Label 4850 2950 0    50   ~ 0
A9
Text Label 4850 2850 0    50   ~ 0
A8
Text Label 4850 3650 0    50   ~ 0
A5
Text Label 4850 4150 0    50   ~ 0
A4
Text Label 4850 3450 0    50   ~ 0
A2
Text Label 4850 3550 0    50   ~ 0
A1
Text Label 4850 3750 0    50   ~ 0
A0
Wire Wire Line
	4850 3750 5050 3750
Wire Wire Line
	4850 3650 5050 3650
Wire Wire Line
	4850 3550 5050 3550
Wire Wire Line
	4850 3450 5050 3450
Wire Wire Line
	4850 3350 5050 3350
Wire Wire Line
	4850 3250 5050 3250
Wire Wire Line
	4850 3150 5050 3150
Wire Wire Line
	4850 3050 5050 3050
Wire Wire Line
	4850 2950 5050 2950
Wire Wire Line
	4850 2850 5050 2850
Wire Wire Line
	4850 2750 5050 2750
Wire Wire Line
	4850 2650 5050 2650
Wire Wire Line
	4850 4250 5050 4250
Wire Wire Line
	4850 4150 5050 4150
Wire Wire Line
	4850 4050 5050 4050
Wire Wire Line
	4850 3950 5050 3950
Wire Wire Line
	4850 3850 5050 3850
Entry Wire Line
	5150 3650 5050 3750
Entry Wire Line
	5150 3550 5050 3650
Entry Wire Line
	5150 3850 5050 3950
Entry Wire Line
	5150 3950 5050 4050
Entry Wire Line
	5150 4050 5050 4150
Entry Wire Line
	5150 4150 5050 4250
Entry Wire Line
	5150 3750 5050 3850
Entry Wire Line
	3650 3550 3750 3450
Entry Wire Line
	3650 3450 3750 3350
Wire Wire Line
	3650 2850 3450 2850
Wire Wire Line
	3650 2950 3450 2950
Wire Wire Line
	3450 3750 3550 3750
Text Label 3450 3750 0    50   ~ 0
R~W~
Text Label 4050 3750 2    50   ~ 0
R~CS~
Wire Wire Line
	3550 3750 3550 3950
$Comp
L 74xx:74HC245 U1
U 1 1 5DE36B22
P 2950 3350
F 0 "U1" H 2950 3550 50  0000 C CNN
F 1 "74HCT245" H 2950 3050 50  0000 C CNN
F 2 "stdpads:SOIC-20W_7.5mm" H 2950 3350 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74HC245" H 2950 3350 50  0001 C CNN
	1    2950 3350
	-1   0    0    -1  
$EndComp
Wire Wire Line
	3650 3850 3650 3750
Wire Wire Line
	3450 3850 3650 3850
Wire Wire Line
	4050 3850 3750 3850
Wire Wire Line
	3650 3750 4050 3750
$Comp
L power:+5V #PWR0111
U 1 1 5E1C7A4E
P 3750 3700
F 0 "#PWR0111" H 3750 3550 50  0001 C CNN
F 1 "+5V" H 3750 3850 50  0000 C CNN
F 2 "" H 3750 3700 50  0001 C CNN
F 3 "" H 3750 3700 50  0001 C CNN
	1    3750 3700
	1    0    0    -1  
$EndComp
Wire Wire Line
	3750 3700 3750 3850
Wire Wire Line
	3550 3950 4050 3950
Text Label 4050 3950 2    50   ~ 0
R~WE~
Wire Wire Line
	4050 4050 4050 4250
Connection ~ 4050 4250
Entry Wire Line
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Entry Wire Line
	5150 3050 5050 3150
Entry Wire Line
	5150 2950 5050 3050
Entry Wire Line
	5150 2850 5050 2950
Entry Wire Line
	5150 2750 5050 2850
Entry Wire Line
	5150 2650 5050 2750
Entry Wire Line
	5150 3450 5050 3550
Entry Wire Line
	5150 3350 5050 3450
Entry Wire Line
	5150 3250 5050 3350
Entry Wire Line
	5150 3150 5050 3250
Entry Wire Line
	5150 2950 5250 3050
Entry Wire Line
	5150 3050 5250 3150
Entry Wire Line
	5150 3150 5250 3250
Entry Wire Line
	5150 3250 5250 3350
Entry Wire Line
	5150 3350 5250 3450
Entry Wire Line
	5150 3450 5250 3550
Entry Wire Line
	5150 3550 5250 3650
Entry Wire Line
	5150 3650 5250 3750
Wire Wire Line
	6550 3850 6750 3850
Wire Wire Line
	6750 3750 6550 3750
Wire Wire Line
	6550 3650 6750 3650
Text Label 6550 2950 0    50   ~ 0
R~CS~1
Text Label 6550 3350 0    50   ~ 0
~INH~b
Wire Wire Line
	6550 3450 6750 3450
Text Label 6550 3450 0    50   ~ 0
RA12
Text Label 6550 3050 0    50   ~ 0
ENWR
Text Label 6550 3150 0    50   ~ 0
ENRD
Text Label 6550 3650 0    50   ~ 0
RA14
Text Label 6550 3750 0    50   ~ 0
RA15
Text Label 6550 3850 0    50   ~ 0
RA16
Text Label 5750 3750 2    50   ~ 0
A15
Text Label 5750 3650 2    50   ~ 0
A14
Text Label 5750 3550 2    50   ~ 0
A13
Text Label 5750 3450 2    50   ~ 0
A12
Text Label 5750 3850 2    50   ~ 0
R~W~
Text Label 5750 3950 2    50   ~ 0
~RES~
Text Label 5750 2950 2    50   ~ 0
PHI1
Text Label 5750 3050 2    50   ~ 0
A0
Text Label 5750 3150 2    50   ~ 0
A1
Text Label 5750 3250 2    50   ~ 0
A2
Text Label 5750 3350 2    50   ~ 0
A3
Text Label 5750 2850 2    50   ~ 0
~DEVSEL~
Wire Bus Line
	5150 4150 6850 4150
Entry Wire Line
	6750 3850 6850 3950
Entry Wire Line
	6750 3750 6850 3850
Entry Wire Line
	6750 3650 6850 3750
Wire Bus Line
	950  4450 2250 4450
Wire Bus Line
	2050 2300 5150 2300
$Comp
L power:GND #PWR0110
U 1 1 5D1550D4
P 4850 7100
F 0 "#PWR0110" H 4850 6850 50  0001 C CNN
F 1 "GND" H 4850 6950 50  0000 C CNN
F 2 "" H 4850 7100 50  0001 C CNN
F 3 "" H 4850 7100 50  0001 C CNN
	1    4850 7100
	1    0    0    -1  
$EndComp
Connection ~ 4450 7100
$Comp
L GW_PLD:GAL22V10-PLCC U3
U 1 1 5E740F35
P 6150 3350
F 0 "U3" H 6150 4000 50  0000 C CNN
F 1 "GAL22V10" V 6150 3250 50  0000 C CNN
F 2 "stdpads:PLCC-28" H 6150 3300 50  0001 C CNN
F 3 "~" H 6150 3300 50  0001 C CNN
	1    6150 3350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0113
U 1 1 5E752E93
P 6550 3950
F 0 "#PWR0113" H 6550 3700 50  0001 C CNN
F 1 "GND" H 6550 3800 50  0000 C CNN
F 2 "" H 6550 3950 50  0001 C CNN
F 3 "" H 6550 3950 50  0001 C CNN
	1    6550 3950
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0114
U 1 1 5E7548D5
P 6550 2850
F 0 "#PWR0114" H 6550 2700 50  0001 C CNN
F 1 "+5V" H 6550 3000 50  0000 C CNN
F 2 "" H 6550 2850 50  0001 C CNN
F 3 "" H 6550 2850 50  0001 C CNN
	1    6550 2850
	1    0    0    -1  
$EndComp
Text Label 4050 3250 2    50   ~ 0
RD7
Text Label 4050 3350 2    50   ~ 0
RD6
Text Label 4050 3450 2    50   ~ 0
RD5
Text Label 4050 3550 2    50   ~ 0
RD4
Text Label 4850 4250 0    50   ~ 0
RA16
Text Label 4850 4050 0    50   ~ 0
RA15
Text Label 4850 3250 0    50   ~ 0
RA12
Text Label 4850 3350 0    50   ~ 0
A13
Text Label 4850 3850 0    50   ~ 0
RA14
Text Label 4850 2650 0    50   ~ 0
A6
Text Label 4850 2750 0    50   ~ 0
A7
Text Label 4850 3950 0    50   ~ 0
A3
Text Label 6550 3550 0    50   ~ 0
ENWR1
Entry Wire Line
	6750 3450 6850 3550
Text Label 6550 3250 0    50   ~ 0
BankAB
Wire Wire Line
	5250 3650 5750 3650
Wire Wire Line
	5250 3750 5750 3750
Wire Wire Line
	5250 3450 5750 3450
Wire Wire Line
	5250 3550 5750 3550
Wire Wire Line
	5250 3250 5750 3250
Wire Wire Line
	5250 3350 5750 3350
Wire Wire Line
	5250 3050 5750 3050
Wire Wire Line
	5250 3150 5750 3150
Text Notes 5350 2850 0    50   ~ 0
(1)
Text Notes 5350 2950 0    50   ~ 0
(2)
Text Notes 5350 3050 0    50   ~ 0
(3)
Text Notes 5350 3150 0    50   ~ 0
(4)
Text Notes 5350 3250 0    50   ~ 0
(5)
Text Notes 5350 3350 0    50   ~ 0
(6)
Text Notes 5350 3450 0    50   ~ 0
(7)
Text Notes 5350 3550 0    50   ~ 0
(8)
Text Notes 5350 3650 0    50   ~ 0
(9)
Text Notes 5350 3750 0    50   ~ 0
(10)
Text Notes 5350 3850 0    50   ~ 0
(11)
Text Notes 5350 3950 0    50   ~ 0
(13)
Wire Wire Line
	2850 7100 3250 7100
Connection ~ 3250 7100
Text Notes 6950 3850 0    50   ~ 0
(14)
Text Notes 6950 3750 0    50   ~ 0
(15)
Text Notes 6950 3650 0    50   ~ 0
(16)
Text Notes 6950 3550 0    50   ~ 0
(17)
Text Notes 6950 3450 0    50   ~ 0
(18)
Text Notes 6950 3350 0    50   ~ 0
(19)
Text Notes 6950 3250 0    50   ~ 0
(20)
Text Notes 6950 3150 0    50   ~ 0
(21)
Text Notes 6950 3050 0    50   ~ 0
(22)
Text Notes 6950 2950 0    50   ~ 0
(23)
$Comp
L power:+5V #PWR0112
U 1 1 5E66DD72
P 8450 3550
F 0 "#PWR0112" H 8450 3400 50  0001 C CNN
F 1 "+5V" H 8450 3700 50  0000 C CNN
F 2 "" H 8450 3550 50  0001 C CNN
F 3 "" H 8450 3550 50  0001 C CNN
	1    8450 3550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0115
U 1 1 5E66E2A7
P 8450 4550
F 0 "#PWR0115" H 8450 4300 50  0001 C CNN
F 1 "GND" H 8450 4400 50  0000 C CNN
F 2 "" H 8450 4550 50  0001 C CNN
F 3 "" H 8450 4550 50  0001 C CNN
	1    8450 4550
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS125 U4
U 4 1 5E6CF07A
P 7500 4350
F 0 "U4" H 7450 4350 50  0000 C CNN
F 1 "74AHCT125" H 7450 4100 50  0000 R CNN
F 2 "stdpads:SOIC-14_3.9mm" H 7500 4350 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS125" H 7500 4350 50  0001 C CNN
	4    7500 4350
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS125 U4
U 3 1 5E6CFF48
P 7500 4850
F 0 "U4" H 7450 4850 50  0000 C CNN
F 1 "74AHCT125" H 7650 4800 50  0000 L CNN
F 2 "stdpads:SOIC-14_3.9mm" H 7500 4850 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS125" H 7500 4850 50  0001 C CNN
	3    7500 4850
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0116
U 1 1 5E6CB431
P 7900 4650
F 0 "#PWR0116" H 7900 4500 50  0001 C CNN
F 1 "+5V" H 7900 4800 50  0000 C CNN
F 2 "" H 7900 4650 50  0001 C CNN
F 3 "" H 7900 4650 50  0001 C CNN
	1    7900 4650
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Small R1
U 1 1 5E6C502A
P 7900 4750
F 0 "R1" H 7959 4796 50  0000 L CNN
F 1 "1k" H 7959 4705 50  0000 L CNN
F 2 "stdpads:R_0805" H 7900 4750 50  0001 C CNN
F 3 "~" H 7900 4750 50  0001 C CNN
	1    7900 4750
	1    0    0    -1  
$EndComp
Text Label 8100 4850 0    50   ~ 0
~INH~
$Comp
L 74xx:74LS125 U4
U 1 1 5E64DA0F
P 7450 2950
F 0 "U4" H 7400 2950 50  0000 C CNN
F 1 "74AHCT125" H 7800 2900 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 7450 2950 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS125" H 7450 2950 50  0001 C CNN
	1    7450 2950
	1    0    0    -1  
$EndComp
$Comp
L 74xx:74LS125 U4
U 2 1 5E6CE65F
P 7500 3850
F 0 "U4" H 7450 3850 50  0000 C CNN
F 1 "74AHCT125" H 7450 3600 50  0000 R CNN
F 2 "stdpads:SOIC-14_3.9mm" H 7500 3850 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS125" H 7500 3850 50  0001 C CNN
	2    7500 3850
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0117
U 1 1 5E946D06
P 7450 3200
F 0 "#PWR0117" H 7450 2950 50  0001 C CNN
F 1 "GND" H 7450 3050 50  0000 C CNN
F 2 "" H 7450 3200 50  0001 C CNN
F 3 "" H 7450 3200 50  0001 C CNN
	1    7450 3200
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0119
U 1 1 5E95F71E
P 7700 3900
F 0 "#PWR0119" H 7700 3650 50  0001 C CNN
F 1 "GND" H 7700 3750 50  0000 C CNN
F 2 "" H 7700 3900 50  0001 C CNN
F 3 "" H 7700 3900 50  0001 C CNN
	1    7700 3900
	1    0    0    -1  
$EndComp
Wire Wire Line
	7700 3900 7600 3900
Wire Wire Line
	7600 3900 7600 4100
Wire Wire Line
	7600 4100 7500 4100
$Comp
L power:GND #PWR0121
U 1 1 5E965165
P 7700 4400
F 0 "#PWR0121" H 7700 4150 50  0001 C CNN
F 1 "GND" H 7700 4250 50  0000 C CNN
F 2 "" H 7700 4400 50  0001 C CNN
F 3 "" H 7700 4400 50  0001 C CNN
	1    7700 4400
	1    0    0    -1  
$EndComp
Wire Wire Line
	7700 4400 7600 4400
Wire Wire Line
	7600 4400 7600 4600
Wire Wire Line
	7600 4600 7500 4600
Wire Wire Line
	7800 4150 7200 4150
Wire Wire Line
	7800 4350 7800 4650
Wire Wire Line
	7800 3850 7800 4150
Wire Wire Line
	7200 4350 7200 4150
$Comp
L power:GND #PWR0122
U 1 1 5EA28AA9
P 7200 4850
F 0 "#PWR0122" H 7200 4600 50  0001 C CNN
F 1 "GND" H 7200 4700 50  0000 C CNN
F 2 "" H 7200 4850 50  0001 C CNN
F 3 "" H 7200 4850 50  0001 C CNN
	1    7200 4850
	1    0    0    -1  
$EndComp
Wire Wire Line
	7500 5100 7100 5100
Wire Wire Line
	7100 5100 7100 4650
Wire Wire Line
	7100 4650 7800 4650
Wire Wire Line
	8100 4850 7900 4850
Connection ~ 7900 4850
Wire Wire Line
	7900 4850 7800 4850
Wire Wire Line
	6550 2950 7150 2950
Wire Wire Line
	6550 3350 7200 3350
Wire Wire Line
	7200 3350 7200 3850
Text Label 7950 2950 2    50   ~ 0
R~CS~
Wire Wire Line
	7950 2950 7750 2950
$Comp
L 74xx:74LS125 U4
U 5 1 5E66D644
P 8450 4050
F 0 "U4" H 8450 4100 50  0000 C CNN
F 1 "74AHCT125" H 8450 4000 50  0000 C CNN
F 2 "stdpads:SOIC-14_3.9mm" H 8450 4050 50  0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS125" H 8450 4050 50  0001 C CNN
	5    8450 4050
	1    0    0    -1  
$EndComp
$Comp
L Device:C_Small C6
U 1 1 5E988E8B
P 4850 7000
F 0 "C6" H 4900 7050 50  0000 L CNN
F 1 "2u2" H 4900 6950 50  0000 L CNN
F 2 "stdpads:C_0805" H 4850 7000 50  0001 C CNN
F 3 "~" H 4850 7000 50  0001 C CNN
	1    4850 7000
	1    0    0    -1  
$EndComp
Wire Wire Line
	4450 6900 4850 6900
Wire Wire Line
	4450 7100 4850 7100
Connection ~ 4850 7100
Wire Bus Line
	6850 3550 6850 4150
Wire Bus Line
	5150 3750 5150 4150
Wire Bus Line
	950  3500 950  4450
Wire Bus Line
	3750 2750 3750 3450
Wire Bus Line
	2250 2950 2250 4450
Wire Bus Line
	2050 2300 2050 4000
Wire Bus Line
	5150 2300 5150 3650
$EndSCHEMATC