864 lines
19 KiB
Plaintext
864 lines
19 KiB
Plaintext
EESchema Schematic File Version 4
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EELAYER 30 0
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EELAYER END
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$Descr USLetter 11000 8500
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encoding utf-8
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Sheet 1 1
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Title ""
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Date ""
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Rev ""
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Comp ""
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Comment1 ""
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Comment3 ""
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Comment4 ""
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$Comp
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F 3 "~" H 700 4000 50 0001 C CNN
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$EndComp
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$Comp
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$EndComp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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1500 3900 1900 3900
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Connection ~ 1500 4100
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Wire Wire Line
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1500 4100 1900 4100
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Connection ~ 1100 3900
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Wire Wire Line
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Connection ~ 1100 4100
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Wire Wire Line
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Connection ~ 700 3900
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$Comp
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$EndComp
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$Comp
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F 3 "~" H 1100 3650 50 0001 C CNN
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1 1100 3650
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$EndComp
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$Comp
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L Mechanical:Fiducial FID1
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U 1 1 5EDCC581
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F 3 "~" H 1100 3400 50 0001 C CNN
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DQ8
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~RAS~
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Text Label 1350 2450 0 50 ~ 0
|
|
~WE~
|
|
Text Label 850 2250 2 50 ~ 0
|
|
A0
|
|
Text Label 850 2150 2 50 ~ 0
|
|
A1
|
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Text Label 850 2050 2 50 ~ 0
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|
A2
|
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Text Label 850 1950 2 50 ~ 0
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A3
|
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Text Label 1350 1950 0 50 ~ 0
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A4
|
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Text Label 1350 2050 0 50 ~ 0
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A5
|
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Text Label 1350 2150 0 50 ~ 0
|
|
A6
|
|
Text Label 1350 2250 0 50 ~ 0
|
|
A7
|
|
Text Label 850 2350 2 50 ~ 0
|
|
A8
|
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Text Label 1350 2350 0 50 ~ 0
|
|
A9
|
|
$Comp
|
|
L 74xx:74LS08 U3
|
|
U 2 2 60D271A2
|
|
P 2450 1650
|
|
F 0 "U3" H 2450 1650 50 0000 C CNN
|
|
F 1 "74HCT08D" H 2450 1850 50 0000 C CNN
|
|
F 2 "stdpads:SOIC-14_3.9mm" H 2450 1650 50 0001 C CNN
|
|
F 3 "http://www.ti.com/lit/gpn/sn74LS08" H 2450 1650 50 0001 C CNN
|
|
2 2450 1650
|
|
1 0 0 -1
|
|
$EndComp
|
|
Text Label 850 950 2 50 ~ 0
|
|
U~CAS~C
|
|
Text Label 1850 1550 0 50 ~ 0
|
|
U~CAS~C
|
|
Text Label 1850 1750 0 50 ~ 0
|
|
U~CAS~D
|
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Text Label 1850 1950 0 50 ~ 0
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L~CAS~C
|
|
Text Label 1850 2150 0 50 ~ 0
|
|
L~CAS~D
|
|
Text Label 1850 2450 0 50 ~ 0
|
|
U~CAS~E
|
|
Wire Wire Line
|
|
2150 1950 1850 1950
|
|
Wire Wire Line
|
|
1850 2150 2150 2150
|
|
Wire Wire Line
|
|
1850 1750 2150 1750
|
|
Wire Wire Line
|
|
1850 1550 2150 1550
|
|
Text Label 2750 1650 0 50 ~ 0
|
|
U~CAS~0
|
|
Text Label 2750 2050 0 50 ~ 0
|
|
L~CAS~0
|
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Wire Wire Line
|
|
3150 2050 2750 2050
|
|
Wire Wire Line
|
|
2750 1650 3150 1650
|
|
Text Label 3050 2450 2 50 ~ 0
|
|
U~CAS~1
|
|
Wire Wire Line
|
|
3150 2450 1850 2450
|
|
Text Label 1850 2650 0 50 ~ 0
|
|
L~CAS~E
|
|
Text Label 3050 2650 2 50 ~ 0
|
|
L~CAS~1
|
|
Wire Wire Line
|
|
3150 2650 1850 2650
|
|
$Comp
|
|
L 74xx:74LS08 U3
|
|
U 1 2 60D2CF76
|
|
P 2450 2050
|
|
F 0 "U3" H 2450 2050 50 0000 C CNN
|
|
F 1 "74HCT08D" H 2450 2250 50 0000 C CNN
|
|
F 2 "stdpads:SOIC-14_3.9mm" H 2450 2050 50 0001 C CNN
|
|
F 3 "http://www.ti.com/lit/gpn/sn74LS08" H 2450 2050 50 0001 C CNN
|
|
1 2450 2050
|
|
1 0 0 -1
|
|
$EndComp
|
|
Wire Wire Line
|
|
3150 1950 3150 2050
|
|
Wire Wire Line
|
|
3150 1750 3150 1650
|
|
Text Label 3950 1850 2 50 ~ 0
|
|
~OE~0
|
|
Wire Wire Line
|
|
3950 1850 3750 1850
|
|
Text Label 3950 2550 2 50 ~ 0
|
|
~OE~1
|
|
Wire Wire Line
|
|
3950 2550 3750 2550
|
|
$Comp
|
|
L power:+5V #PWR0116
|
|
U 1 1 60D54A33
|
|
P 4400 3100
|
|
F 0 "#PWR0116" H 4400 2950 50 0001 C CNN
|
|
F 1 "+5V" H 4400 3250 50 0000 C CNN
|
|
F 2 "" H 4400 3100 50 0001 C CNN
|
|
F 3 "" H 4400 3100 50 0001 C CNN
|
|
1 4400 3100
|
|
1 0 0 -1
|
|
$EndComp
|
|
$Comp
|
|
L power:GND #PWR0117
|
|
U 1 1 60D5518C
|
|
P 4400 4100
|
|
F 0 "#PWR0117" H 4400 3850 50 0001 C CNN
|
|
F 1 "GND" H 4400 3950 50 0000 C CNN
|
|
F 2 "" H 4400 4100 50 0001 C CNN
|
|
F 3 "" H 4400 4100 50 0001 C CNN
|
|
1 4400 4100
|
|
-1 0 0 -1
|
|
$EndComp
|
|
Text Label 3900 3700 0 50 ~ 0
|
|
~SIMM~
|
|
Text Label 3900 3800 0 50 ~ 0
|
|
~EXP~
|
|
$Comp
|
|
L power:GND #PWR0118
|
|
U 1 1 60D5688B
|
|
P 4100 4100
|
|
F 0 "#PWR0118" H 4100 3850 50 0001 C CNN
|
|
F 1 "GND" H 4100 3950 50 0000 C CNN
|
|
F 2 "" H 4100 4100 50 0001 C CNN
|
|
F 3 "" H 4100 4100 50 0001 C CNN
|
|
1 4100 4100
|
|
1 0 0 -1
|
|
$EndComp
|
|
Wire Wire Line
|
|
4100 4100 4100 3800
|
|
Wire Wire Line
|
|
4100 3700 3900 3700
|
|
Wire Wire Line
|
|
3900 3800 4100 3800
|
|
Connection ~ 4100 3800
|
|
Wire Wire Line
|
|
4100 3800 4100 3700
|
|
$Comp
|
|
L 74xx:74LS08 U3
|
|
U 4 2 60D4623E
|
|
P 3450 2550
|
|
F 0 "U3" H 3450 2550 50 0000 C CNN
|
|
F 1 "74HCT08D" H 3450 2750 50 0000 C CNN
|
|
F 2 "stdpads:SOIC-14_3.9mm" H 3450 2550 50 0001 C CNN
|
|
F 3 "http://www.ti.com/lit/gpn/sn74LS08" H 3450 2550 50 0001 C CNN
|
|
4 3450 2550
|
|
1 0 0 -1
|
|
$EndComp
|
|
$Comp
|
|
L 74xx:74LS08 U3
|
|
U 5 1 60D535D3
|
|
P 4400 3600
|
|
F 0 "U3" H 4630 3646 50 0000 L CNN
|
|
F 1 "74HCT08D" H 4630 3555 50 0000 L CNN
|
|
F 2 "stdpads:SOIC-14_3.9mm" H 4400 3600 50 0001 C CNN
|
|
F 3 "http://www.ti.com/lit/gpn/sn74LS08" H 4400 3600 50 0001 C CNN
|
|
5 4400 3600
|
|
1 0 0 -1
|
|
$EndComp
|
|
Wire Wire Line
|
|
650 2750 850 2750
|
|
Wire Wire Line
|
|
650 850 850 850
|
|
$Comp
|
|
L Connector_Generic:Conn_02x22_Odd_Even J1
|
|
U 1 1 60D165FF
|
|
P 1150 1750
|
|
F 0 "J1" H 1200 2850 50 0000 C CNN
|
|
F 1 "RAM Exp." H 1200 550 50 0000 C CNN
|
|
F 2 "stdpads:PinSocket_2x22_P2.54mm_Horizontal" H 1150 1750 50 0001 C CNN
|
|
F 3 "~" H 1150 1750 50 0001 C CNN
|
|
1 1150 1750
|
|
-1 0 0 -1
|
|
$EndComp
|
|
$Comp
|
|
L 74xx:74LS08 U3
|
|
U 3 2 60D3EADF
|
|
P 3450 1850
|
|
F 0 "U3" H 3450 1850 50 0000 C CNN
|
|
F 1 "74HCT08D" H 3450 2050 50 0000 C CNN
|
|
F 2 "stdpads:SOIC-14_3.9mm" H 3450 1850 50 0001 C CNN
|
|
F 3 "http://www.ti.com/lit/gpn/sn74LS08" H 3450 1850 50 0001 C CNN
|
|
3 3450 1850
|
|
1 0 0 -1
|
|
$EndComp
|
|
Text Label 5500 1950 0 50 ~ 0
|
|
DQ0
|
|
Text Label 5500 1750 0 50 ~ 0
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|
DQ1
|
|
Text Label 5500 1850 0 50 ~ 0
|
|
DQ5
|
|
Text Label 5500 2050 0 50 ~ 0
|
|
DQ4
|
|
Text Label 5500 1650 0 50 ~ 0
|
|
DQ6
|
|
Text Label 5500 1450 0 50 ~ 0
|
|
DQ7
|
|
Text Label 5500 1550 0 50 ~ 0
|
|
DQ2
|
|
Text Label 5500 1350 0 50 ~ 0
|
|
DQ3
|
|
Text Label 7100 1950 0 50 ~ 0
|
|
DQ0
|
|
Text Label 7100 1750 0 50 ~ 0
|
|
DQ1
|
|
Text Label 7100 1850 0 50 ~ 0
|
|
DQ5
|
|
Text Label 7100 2050 0 50 ~ 0
|
|
DQ4
|
|
Text Label 7100 1650 0 50 ~ 0
|
|
DQ6
|
|
Text Label 7100 1450 0 50 ~ 0
|
|
DQ7
|
|
Text Label 7100 1550 0 50 ~ 0
|
|
DQ2
|
|
Text Label 7100 1350 0 50 ~ 0
|
|
DQ3
|
|
Text Label 7100 2750 0 50 ~ 0
|
|
DQ12
|
|
Text Label 7100 2950 0 50 ~ 0
|
|
DQ13
|
|
Text Label 7100 2650 0 50 ~ 0
|
|
DQ14
|
|
Text Label 7100 2850 0 50 ~ 0
|
|
DQ15
|
|
Text Label 5500 2750 0 50 ~ 0
|
|
DQ12
|
|
Text Label 5500 2950 0 50 ~ 0
|
|
DQ13
|
|
Text Label 5500 2650 0 50 ~ 0
|
|
DQ14
|
|
Text Label 5500 2850 0 50 ~ 0
|
|
DQ15
|
|
Text Label 7100 2250 0 50 ~ 0
|
|
DQ10
|
|
Text Label 7100 2550 0 50 ~ 0
|
|
DQ9
|
|
Text Label 7100 2450 0 50 ~ 0
|
|
DQ11
|
|
Text Label 5500 2350 0 50 ~ 0
|
|
DQ8
|
|
Text Label 5500 2250 0 50 ~ 0
|
|
DQ10
|
|
Text Label 5500 2550 0 50 ~ 0
|
|
DQ9
|
|
Text Label 5500 2450 0 50 ~ 0
|
|
DQ11
|
|
Wire Wire Line
|
|
3150 1650 3150 1550
|
|
Wire Wire Line
|
|
3150 1550 3950 1550
|
|
Connection ~ 3150 1650
|
|
Wire Wire Line
|
|
3150 2050 3950 2050
|
|
Connection ~ 3150 2050
|
|
Text Label 3950 1550 2 50 ~ 0
|
|
U~CAS~0
|
|
Text Label 3950 2050 2 50 ~ 0
|
|
L~CAS~0
|
|
Wire Wire Line
|
|
3150 2450 3150 2250
|
|
Wire Wire Line
|
|
3150 2250 3950 2250
|
|
Connection ~ 3150 2450
|
|
Wire Wire Line
|
|
3150 2650 3150 2750
|
|
Wire Wire Line
|
|
3150 2750 3950 2750
|
|
Connection ~ 3150 2650
|
|
Text Label 3950 2750 2 50 ~ 0
|
|
L~CAS~1
|
|
Text Label 3950 2250 2 50 ~ 0
|
|
U~CAS~1
|
|
Text Notes 1900 1250 0 50 ~ 0
|
|
U3A and U3B combine the /CAS signals for the two 256kx4 banks.\nU3C and U3D generate /OE signals to the DRAMs.\nOn the original Classic RAM card /OE is tied low.\nThis arrangement lets us use EDO DRAM.
|
|
$Comp
|
|
L Mechanical:MountingHole_Pad H5
|
|
U 1 1 628D26D2
|
|
P 3300 3400
|
|
F 0 "H5" H 3400 3403 50 0000 L CNN
|
|
F 1 " " H 3400 3358 50 0001 L CNN
|
|
F 2 "stdpads:PasteHole_1.1mm_PTH" H 3300 3400 50 0001 C CNN
|
|
F 3 "~" H 3300 3400 50 0001 C CNN
|
|
1 3300 3400
|
|
1 0 0 -1
|
|
$EndComp
|
|
$Comp
|
|
L Mechanical:MountingHole_Pad H6
|
|
U 1 1 628D4315
|
|
P 3600 3400
|
|
F 0 "H6" H 3700 3403 50 0000 L CNN
|
|
F 1 " " H 3700 3358 50 0001 L CNN
|
|
F 2 "stdpads:PasteHole_1.1mm_PTH" H 3600 3400 50 0001 C CNN
|
|
F 3 "~" H 3600 3400 50 0001 C CNN
|
|
1 3600 3400
|
|
1 0 0 -1
|
|
$EndComp
|
|
Connection ~ 2400 3500
|
|
Connection ~ 2700 3500
|
|
Connection ~ 3000 3500
|
|
Wire Wire Line
|
|
2400 3500 2700 3500
|
|
Wire Wire Line
|
|
2700 3500 3000 3500
|
|
Wire Wire Line
|
|
3000 3500 3300 3500
|
|
Connection ~ 3600 3500
|
|
Connection ~ 3300 3500
|
|
Wire Wire Line
|
|
3300 3500 3600 3500
|
|
Wire Wire Line
|
|
2100 3500 2400 3500
|
|
$Comp
|
|
L Mechanical:Fiducial FID3
|
|
U 1 1 5EDCCCF0
|
|
P 1600 3650
|
|
F 0 "FID3" H 1685 3696 50 0000 L CNN
|
|
F 1 "Fiducial" H 1685 3605 50 0000 L CNN
|
|
F 2 "stdpads:Fiducial" H 1600 3650 50 0001 C CNN
|
|
F 3 "~" H 1600 3650 50 0001 C CNN
|
|
1 1600 3650
|
|
1 0 0 -1
|
|
$EndComp
|
|
$Comp
|
|
L Mechanical:Fiducial FID6
|
|
U 1 1 628E0825
|
|
P 3100 3650
|
|
F 0 "FID6" H 3185 3696 50 0000 L CNN
|
|
F 1 "Fiducial" H 3185 3605 50 0000 L CNN
|
|
F 2 "stdpads:Fiducial" H 3100 3650 50 0001 C CNN
|
|
F 3 "~" H 3100 3650 50 0001 C CNN
|
|
1 3100 3650
|
|
1 0 0 -1
|
|
$EndComp
|
|
$Comp
|
|
L Mechanical:Fiducial FID5
|
|
U 1 1 628E082B
|
|
P 2600 3650
|
|
F 0 "FID5" H 2685 3696 50 0000 L CNN
|
|
F 1 "Fiducial" H 2685 3605 50 0000 L CNN
|
|
F 2 "stdpads:Fiducial" H 2600 3650 50 0001 C CNN
|
|
F 3 "~" H 2600 3650 50 0001 C CNN
|
|
1 2600 3650
|
|
1 0 0 -1
|
|
$EndComp
|
|
$EndSCHEMATC
|