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 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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 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