BlueSCSI-v2/hw/external-db25/bluepill_scsi.sch

EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Wire Wire Line
	3350 2450 3900 2450
Text Label 3450 2450 0    50   ~ 0
SCSI_DAT0
Wire Wire Line
	3350 2350 3900 2350
Text Label 3450 2350 0    50   ~ 0
SCSI_DAT1
Wire Wire Line
	1600 3450 1150 3450
Text Label 1200 3450 0    50   ~ 0
SCSI_DAT2
Wire Wire Line
	1600 3550 1150 3550
Text Label 1200 3550 0    50   ~ 0
SCSI_DAT3
Wire Wire Line
	3350 3950 3900 3950
Text Label 3450 3950 0    50   ~ 0
SCSI_DAT4
Wire Wire Line
	3350 3850 3900 3850
Wire Wire Line
	3350 3650 3900 3650
Wire Wire Line
	3350 3750 3900 3750
Text Label 3450 3850 0    50   ~ 0
SCSI_DAT5
Text Label 3450 3750 0    50   ~ 0
SCSI_DAT6
Text Label 3450 3650 0    50   ~ 0
SCSI_DAT7
Wire Wire Line
	1600 3250 1150 3250
Text Label 1200 3250 0    50   ~ 0
SCSI_DBP
Wire Wire Line
	3350 3350 3900 3350
Wire Wire Line
	3350 3450 3900 3450
Wire Wire Line
	3350 3550 3900 3550
Text Label 3450 3550 0    50   ~ 0
SCSI_ATN
Text Label 3450 3450 0    50   ~ 0
SCSI_BSY
Text Label 3450 3350 0    50   ~ 0
SCSI_ACK
Wire Wire Line
	3350 3050 3900 3050
Text Label 3450 3050 0    50   ~ 0
SCSI_RST
Wire Wire Line
	3350 2550 3900 2550
Wire Wire Line
	3350 2650 3900 2650
Wire Wire Line
	3350 2750 3900 2750
Wire Wire Line
	3350 2850 3900 2850
Wire Wire Line
	3350 2950 3900 2950
Text Label 3450 2950 0    50   ~ 0
SCSI_MSG
Text Label 3450 2850 0    50   ~ 0
SCSI_SEL
Text Label 3450 2750 0    50   ~ 0
SCSI_CD
Text Label 3450 2650 0    50   ~ 0
SCSI_REQ
Text Label 3450 2550 0    50   ~ 0
SCSI_IO
Wire Wire Line
	1600 3850 1350 3850
Wire Wire Line
	1350 3850 1350 3950
Wire Wire Line
	1600 3950 1350 3950
Connection ~ 1350 3950
Wire Wire Line
	1350 3950 1350 4150
$Comp
L power:GND #PWR0102
U 1 1 5F054918
P 1350 4150
F 0 "#PWR0102" H 1350 3900 50  0001 C CNN
F 1 "GND" H 1355 3977 50  0000 C CNN
F 2 "" H 1350 4150 50  0001 C CNN
F 3 "" H 1350 4150 50  0001 C CNN
	1    1350 4150
	1    0    0    -1  
$EndComp
Wire Wire Line
	3350 2250 4050 2250
Wire Wire Line
	4050 2250 4050 1950
Wire Wire Line
	3350 2050 3550 2050
Wire Wire Line
	3550 2050 3550 1950
Wire Wire Line
	3350 2150 4250 2150
Wire Wire Line
	4250 2150 4250 2300
$Comp
L power:GND #PWR0104
U 1 1 5F05BD87
P 4250 2300
F 0 "#PWR0104" H 4250 2050 50  0001 C CNN
F 1 "GND" H 4255 2127 50  0000 C CNN
F 2 "" H 4250 2300 50  0001 C CNN
F 3 "" H 4250 2300 50  0001 C CNN
	1    4250 2300
	1    0    0    -1  
$EndComp
$Comp
L power:+3.3V #PWR0106
U 1 1 5F05CE0E
P 3550 1950
F 0 "#PWR0106" H 3550 1800 50  0001 C CNN
F 1 "+3.3V" H 3565 2123 50  0000 C CNN
F 2 "" H 3550 1950 50  0001 C CNN
F 3 "" H 3550 1950 50  0001 C CNN
	1    3550 1950
	1    0    0    -1  
$EndComp
Wire Wire Line
	1600 3750 900  3750
Wire Wire Line
	900  3750 900  3650
$Comp
L power:+3.3V #PWR0107
U 1 1 5F05ECF2
P 900 3650
F 0 "#PWR0107" H 900 3500 50  0001 C CNN
F 1 "+3.3V" H 915 3823 50  0000 C CNN
F 2 "" H 900 3650 50  0001 C CNN
F 3 "" H 900 3650 50  0001 C CNN
	1    900  3650
	1    0    0    -1  
$EndComp
Wire Wire Line
	1600 2850 1150 2850
Wire Wire Line
	1600 2950 1150 2950
Wire Wire Line
	1600 3050 1150 3050
Wire Wire Line
	1600 3150 1150 3150
Text Label 1200 2850 0    50   ~ 0
SD_CS
Text Label 1200 2950 0    50   ~ 0
SD_CLK
Text Label 1200 3050 0    50   ~ 0
SD_MISO
Text Label 1200 3150 0    50   ~ 0
SD_MOSI
Wire Wire Line
	8550 4250 8050 4250
Text Label 8150 4250 0    50   ~ 0
SD_CLK
Text Label 8150 4450 0    50   ~ 0
SD_MISO
Text Label 8150 4050 0    50   ~ 0
SD_MOSI
Text Label 8150 3950 0    50   ~ 0
SD_CS
$Comp
L power:+3.3V #PWR0108
U 1 1 5F08F209
P 7800 4150
F 0 "#PWR0108" H 7800 4000 50  0001 C CNN
F 1 "+3.3V" H 7800 4300 50  0000 C CNN
F 2 "" H 7800 4150 50  0001 C CNN
F 3 "" H 7800 4150 50  0001 C CNN
	1    7800 4150
	1    0    0    -1  
$EndComp
Wire Wire Line
	8550 4350 7950 4350
Wire Wire Line
	7950 4350 7950 4600
$Comp
L power:GND #PWR0109
U 1 1 5F092548
P 7950 4600
F 0 "#PWR0109" H 7950 4350 50  0001 C CNN
F 1 "GND" H 7955 4427 50  0000 C CNN
F 2 "" H 7950 4600 50  0001 C CNN
F 3 "" H 7950 4600 50  0001 C CNN
	1    7950 4600
	1    0    0    -1  
$EndComp
$Comp
L bluepill_scsi-rescue:BluePill_STM32F103C-bluepill U1
U 1 1 5F01A526
P 2450 2750
F 0 "U1" H 2475 1277 50  0000 C CNN
F 1 "BluePill_STM32F103C" H 2475 1186 50  0000 C CNN
F 2 "blue:BluePill_STM32F103C" H 2500 1150 50  0001 C CNN
F 3 "www.rogerclark.net" H 2450 1250 50  0001 C CNN
	1    2450 2750
	1    0    0    -1  
$EndComp
$Comp
L Connector:Micro_SD_Card J5
U 1 1 5F0BA382
P 9450 4150
F 0 "J5" H 9400 4867 50  0000 C CNN
F 1 "Micro_SD_Card" H 9400 4776 50  0000 C CNN
F 2 "Connector_Card:microSD_HC_Molex_104031-0811" H 10600 4450 50  0001 C CNN
F 3 "https://www.mouser.com/datasheet/2/276/1/1040310811_MEMORY_CARD_SOCKET-153593.pdf" H 9450 4150 50  0001 C CNN
F 4 "https://www.mouser.com/ProductDetail/538-104031-0811" H 9450 4150 50  0001 C CNN "Mouser"
	1    9450 4150
	1    0    0    -1  
$EndComp
Wire Wire Line
	10250 4750 10450 4750
Wire Wire Line
	10450 4750 10450 4900
$Comp
L power:GND #PWR0110
U 1 1 5F0D8D42
P 10450 4900
F 0 "#PWR0110" H 10450 4650 50  0001 C CNN
F 1 "GND" H 10455 4727 50  0000 C CNN
F 2 "" H 10450 4900 50  0001 C CNN
F 3 "" H 10450 4900 50  0001 C CNN
	1    10450 4900
	1    0    0    -1  
$EndComp
NoConn ~ 1600 2050
NoConn ~ 1600 2250
NoConn ~ 1600 2350
NoConn ~ 1600 2550
NoConn ~ 1600 2650
NoConn ~ 1600 2750
NoConn ~ 1600 3650
NoConn ~ 3350 3150
NoConn ~ 3350 3250
NoConn ~ 2400 850 
NoConn ~ 2500 850 
NoConn ~ 1600 3350
Wire Wire Line
	8550 4150 7800 4150
$Comp
L power:GND #PWR0111
U 1 1 5F9B6506
P 7900 1000
F 0 "#PWR0111" H 7900 750 50  0001 C CNN
F 1 "GND" H 7905 827 50  0000 C CNN
F 2 "" H 7900 1000 50  0001 C CNN
F 3 "" H 7900 1000 50  0001 C CNN
	1    7900 1000
	-1   0    0    1   
$EndComp
Wire Wire Line
	8450 850  8450 1700
Wire Wire Line
	8450 1700 8250 1700
Wire Wire Line
	8550 4050 8050 4050
Wire Wire Line
	8550 3950 8050 3950
Wire Wire Line
	8550 4450 8050 4450
Wire Notes Line
	7650 700  11100 700 
Wire Notes Line
	11100 700  11100 2800
Wire Notes Line
	11100 2800 7650 2800
Wire Notes Line
	7650 2800 7650 700 
Wire Notes Line
	4550 700  4550 4600
Wire Notes Line
	4550 4600 600  4600
Wire Notes Line
	600  4600 600  700 
Wire Notes Line
	600  700  4550 700 
Text Notes 2150 4550 0    50   ~ 0
BluePill STM32
Wire Notes Line
	7650 3300 7650 5250
Wire Notes Line
	7650 5250 10650 5250
Wire Notes Line
	10650 5250 10650 3300
Wire Notes Line
	10650 3300 7650 3300
Text Notes 8900 5200 0    50   ~ 0
Micro SD Card
Text Label 10750 2600 1    50   ~ 0
SCSI_IO
Text Label 10650 2600 1    50   ~ 0
SCSI_REQ
Text Label 10550 2600 1    50   ~ 0
SCSI_CD
Text Label 10350 2600 1    50   ~ 0
SCSI_MSG
Text Label 10050 2600 1    50   ~ 0
SCSI_BSY
Text Label 10450 2600 1    50   ~ 0
SCSI_SEL
Text Label 10150 2600 1    50   ~ 0
SCSI_ACK
Text Label 9950 2600 1    50   ~ 0
SCSI_ATN
Wire Wire Line
	8900 2200 8900 2600
Wire Wire Line
	10050 2200 10050 2600
Wire Wire Line
	10150 2200 10150 2600
Wire Wire Line
	9000 2200 9000 2600
Wire Wire Line
	9100 2200 9100 2600
Wire Wire Line
	9200 2200 9200 2600
Wire Wire Line
	9300 2200 9300 2600
Wire Wire Line
	9400 2200 9400 2600
Wire Wire Line
	9500 2200 9500 2600
Text Label 9100 2600 1    50   ~ 0
SCSI_DBP
Text Label 9100 1650 1    50   ~ 0
SCSI_DBP
Text Notes 7700 2750 0    50   ~ 0
SCSI Termination Resistors
Text Label 9500 2600 1    50   ~ 0
SCSI_DAT7
Text Label 9400 2600 1    50   ~ 0
SCSI_DAT6
Text Label 9000 2600 1    50   ~ 0
SCSI_DAT2
Text Label 9300 2600 1    50   ~ 0
SCSI_DAT5
Text Label 9200 2600 1    50   ~ 0
SCSI_DAT4
Text Label 8900 2600 1    50   ~ 0
SCSI_DAT3
Text Label 8800 2600 1    50   ~ 0
SCSI_DAT1
Wire Wire Line
	10750 2200 10750 2600
Wire Wire Line
	10650 2200 10650 2600
Wire Wire Line
	10550 2200 10550 2600
Wire Wire Line
	10450 2200 10450 2600
Wire Wire Line
	10350 2200 10350 2600
Wire Wire Line
	10250 2200 10250 2600
Wire Wire Line
	8700 2200 8700 2600
Wire Wire Line
	8800 2200 8800 2600
Wire Wire Line
	9950 2200 9950 2600
Text Label 9500 1650 1    50   ~ 0
SCSI_DAT7
Text Label 9400 1650 1    50   ~ 0
SCSI_DAT6
Text Label 9000 1650 1    50   ~ 0
SCSI_DAT2
Text Label 9300 1650 1    50   ~ 0
SCSI_DAT5
Text Label 9200 1650 1    50   ~ 0
SCSI_DAT4
Text Label 8900 1650 1    50   ~ 0
SCSI_DAT3
Text Label 8800 1650 1    50   ~ 0
SCSI_DAT1
Wire Wire Line
	9500 1250 9500 1650
Wire Wire Line
	9400 1250 9400 1650
Wire Wire Line
	9300 1250 9300 1650
Wire Wire Line
	9200 1250 9200 1650
Wire Wire Line
	9100 1250 9100 1650
Wire Wire Line
	9000 1250 9000 1650
Wire Wire Line
	8900 1250 8900 1650
Wire Wire Line
	10050 1250 10050 1650
Wire Wire Line
	10150 1250 10150 1650
Wire Wire Line
	10750 1250 10750 1650
Wire Wire Line
	10650 1250 10650 1650
Wire Wire Line
	10550 1250 10550 1650
Wire Wire Line
	10450 1250 10450 1650
Wire Wire Line
	10350 1250 10350 1650
Wire Wire Line
	10250 1250 10250 1650
Wire Wire Line
	8700 1250 8700 1650
Wire Wire Line
	8800 1250 8800 1650
Wire Wire Line
	9950 1250 9950 1650
Text Label 8700 1650 1    50   ~ 0
SCSI_DAT0
Text Label 9950 1650 1    50   ~ 0
SCSI_ATN
Text Label 10150 1650 1    50   ~ 0
SCSI_ACK
Text Label 10250 1650 1    50   ~ 0
SCSI_RST
Text Label 10450 1650 1    50   ~ 0
SCSI_SEL
Text Label 10050 1650 1    50   ~ 0
SCSI_BSY
Text Label 10350 1650 1    50   ~ 0
SCSI_MSG
Text Label 10550 1650 1    50   ~ 0
SCSI_CD
Text Label 10650 1650 1    50   ~ 0
SCSI_REQ
Text Label 10750 1650 1    50   ~ 0
SCSI_IO
NoConn ~ 8550 3850
NoConn ~ 8550 4550
Wire Wire Line
	7900 1800 8700 1800
Wire Wire Line
	8450 850  8700 850 
$Comp
L Device:R_Network09 RN1
U 1 1 5FA4D960
P 9100 1050
F 0 "RN1" H 9588 1096 50  0000 L CNN
F 1 "220" H 9588 1005 50  0000 L CNN
F 2 "Resistor_THT:R_Array_SIP10" V 9675 1050 50  0001 C CNN
F 3 "http://www.vishay.com/docs/31509/csc.pdf" H 9100 1050 50  0001 C CNN
F 4 "https://www.mouser.com/ProductDetail/652-4610X-1LF-220" H 9100 1050 50  0001 C CNN "Mouser"
	1    9100 1050
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Network09 RN3
U 1 1 5FA502AD
P 10350 1050
F 0 "RN3" H 10838 1096 50  0000 L CNN
F 1 "220" H 10838 1005 50  0000 L CNN
F 2 "Resistor_THT:R_Array_SIP10" V 10925 1050 50  0001 C CNN
F 3 "http://www.vishay.com/docs/31509/csc.pdf" H 10350 1050 50  0001 C CNN
F 4 "https://www.mouser.com/ProductDetail/652-4610X-1LF-220" H 10350 1050 50  0001 C CNN "Mouser"
	1    10350 1050
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Network09 RN2
U 1 1 5FA52D01
P 9100 2000
F 0 "RN2" H 9588 2046 50  0000 L CNN
F 1 "330" H 9588 1955 50  0000 L CNN
F 2 "Resistor_THT:R_Array_SIP10" V 9675 2000 50  0001 C CNN
F 3 "http://www.vishay.com/docs/31509/csc.pdf" H 9100 2000 50  0001 C CNN
F 4 "https://www.mouser.com/ProductDetail/652-4610X-1LF-330" H 9100 2000 50  0001 C CNN "Mouser"
	1    9100 2000
	1    0    0    -1  
$EndComp
$Comp
L Device:R_Network09 RN4
U 1 1 5FA54CA6
P 10350 2000
F 0 "RN4" H 10838 2046 50  0000 L CNN
F 1 "330" H 10838 1955 50  0000 L CNN
F 2 "Resistor_THT:R_Array_SIP10" V 10925 2000 50  0001 C CNN
F 3 "http://www.vishay.com/docs/31509/csc.pdf" H 10350 2000 50  0001 C CNN
F 4 "https://www.mouser.com/ProductDetail/652-4610X-1LF-330" H 10350 2000 50  0001 C CNN "Mouser"
	1    10350 2000
	1    0    0    -1  
$EndComp
Connection ~ 8700 1800
Wire Wire Line
	8700 1800 9950 1800
Connection ~ 8700 850 
Wire Wire Line
	8700 850  9950 850 
Wire Wire Line
	1600 2150 1150 2150
Text Label 1150 2150 0    50   ~ 0
LED
Wire Wire Line
	3400 5700 3400 5400
Wire Wire Line
	3400 6000 3400 6250
Wire Wire Line
	3250 6250 3250 6450
Wire Wire Line
	3250 6450 3600 6450
Wire Wire Line
	3600 6450 3600 6300
Wire Wire Line
	3250 6250 3400 6250
Text Label 3400 5400 3    50   ~ 0
TERM_PWR
$Comp
L power:VCC #PWR0105
U 1 1 5FB29B44
P 3600 6300
F 0 "#PWR0105" H 3600 6150 50  0001 C CNN
F 1 "VCC" H 3615 6473 50  0000 C CNN
F 2 "" H 3600 6300 50  0001 C CNN
F 3 "" H 3600 6300 50  0001 C CNN
	1    3600 6300
	1    0    0    -1  
$EndComp
Wire Notes Line
	3800 6600 2850 6600
Wire Notes Line
	2850 6600 2850 5000
Wire Notes Line
	2850 5000 3800 5000
Wire Notes Line
	3800 5000 3800 6600
Text Notes 3050 5150 0    50   ~ 0
Power Input
$Comp
L power:VCC #PWR0115
U 1 1 5FB9CE9F
P 4050 1950
F 0 "#PWR0115" H 4050 1800 50  0001 C CNN
F 1 "VCC" H 4065 2123 50  0000 C CNN
F 2 "" H 4050 1950 50  0001 C CNN
F 3 "" H 4050 1950 50  0001 C CNN
	1    4050 1950
	1    0    0    -1  
$EndComp
$Comp
L Device:D_Schottky D5
U 1 1 5FB97E4B
P 3400 5850
F 0 "D5" V 3446 5770 50  0000 R CNN
F 1 "Diode" H 3450 5950 50  0000 R CNN
F 2 "Diode_THT:D_A-405_P7.62mm_Horizontal" H 3400 5850 50  0001 C CNN
F 3 "~" H 3400 5850 50  0001 C CNN
	1    3400 5850
	0    -1   -1   0   
$EndComp
$Comp
L power:VCC #PWR0112
U 1 1 60659E21
P 8250 1000
F 0 "#PWR0112" H 8250 850 50  0001 C CNN
F 1 "VCC" H 8265 1173 50  0000 C CNN
F 2 "" H 8250 1000 50  0001 C CNN
F 3 "" H 8250 1000 50  0001 C CNN
	1    8250 1000
	1    0    0    -1  
$EndComp
Text Label 10250 2600 1    50   ~ 0
SCSI_RST
Text Label 8700 2600 1    50   ~ 0
SCSI_DAT0
Wire Wire Line
	1600 2450 1150 2450
Text Label 1150 2450 0    50   ~ 0
EXTERNAL_LED
$Comp
L Connector:DB25_Male_MountingHoles J2
U 1 1 6162738D
P 5200 2500
F 0 "J2" H 5380 2409 50  0000 L CNN
F 1 "DB25_Male_MountingHoles" H 4250 850 50  0000 L CNN
F 2 "Connector_Dsub:DSUB-25_Male_Horizontal_P2.77x2.84mm_EdgePinOffset4.94mm_Housed_MountingHolesOffset7.48mm" H 5200 2500 50  0001 C CNN
F 3 " ~" H 5200 2500 50  0001 C CNN
	1    5200 2500
	-1   0    0    1   
$EndComp
Wire Wire Line
	5500 1300 5900 1300
Text Label 5550 1300 0    50   ~ 0
SCSI_REQ
Wire Wire Line
	5500 1500 5900 1500
Wire Wire Line
	5500 1600 5900 1600
Wire Wire Line
	5500 1700 5900 1700
Wire Wire Line
	5500 1900 5900 1900
Wire Wire Line
	5500 2000 5900 2000
Wire Wire Line
	5500 2100 5900 2100
Wire Wire Line
	5500 2300 5900 2300
Wire Wire Line
	5500 2400 5900 2400
Wire Wire Line
	5500 2600 5900 2600
Wire Wire Line
	5500 2700 5900 2700
Wire Wire Line
	5500 2800 5900 2800
Wire Wire Line
	5500 3000 5900 3000
Wire Wire Line
	5500 3100 5900 3100
Wire Wire Line
	5500 3200 5900 3200
Wire Wire Line
	5500 3300 5900 3300
Wire Wire Line
	5500 3500 5900 3500
Wire Wire Line
	5500 3600 5900 3600
Wire Wire Line
	5500 3700 5900 3700
$Comp
L power:GND #PWR0101
U 1 1 616A3915
P 6200 1200
F 0 "#PWR0101" H 6200 950 50  0001 C CNN
F 1 "GND" H 6205 1027 50  0000 C CNN
F 2 "" H 6200 1200 50  0001 C CNN
F 3 "" H 6200 1200 50  0001 C CNN
	1    6200 1200
	-1   0    0    1   
$EndComp
Wire Wire Line
	6200 1400 6200 1200
Wire Wire Line
	5500 1400 6200 1400
Text Label 5550 1500 0    50   ~ 0
SCSI_MSG
Text Label 5550 1600 0    50   ~ 0
SCSI_CD
Text Label 5550 1700 0    50   ~ 0
SCSI_IO
Wire Wire Line
	6200 1800 6200 1400
Wire Wire Line
	5500 1800 6200 1800
Connection ~ 6200 1400
Text Label 5550 1900 0    50   ~ 0
SCSI_RST
Text Label 5550 2000 0    50   ~ 0
SCSI_ATN
Text Label 5550 2100 0    50   ~ 0
SCSI_ACK
Wire Wire Line
	6200 2200 6200 1800
Wire Wire Line
	5500 2200 6200 2200
Connection ~ 6200 1800
Text Label 5550 2300 0    50   ~ 0
SCSI_BSY
Text Label 5550 2400 0    50   ~ 0
SCSI_SEL
Wire Wire Line
	6200 2500 6200 2200
Wire Wire Line
	5500 2500 6200 2500
Connection ~ 6200 2200
Text Label 5550 2600 0    50   ~ 0
SCSI_DBP
Text Label 5550 2700 0    50   ~ 0
SCSI_DAT0
Text Label 5550 2800 0    50   ~ 0
SCSI_DAT1
Wire Wire Line
	6200 2900 6200 2500
Wire Wire Line
	5500 2900 6200 2900
Connection ~ 6200 2500
Text Label 5550 3000 0    50   ~ 0
SCSI_DAT2
Text Label 5550 3100 0    50   ~ 0
SCSI_DAT3
Text Label 5550 3200 0    50   ~ 0
SCSI_DAT4
Text Label 5550 3300 0    50   ~ 0
SCSI_DAT5
Wire Wire Line
	6200 3400 6200 2900
Wire Wire Line
	5500 3400 6200 3400
Connection ~ 6200 2900
Text Label 5550 3500 0    50   ~ 0
SCSI_DAT6
Text Label 5550 3600 0    50   ~ 0
TERM_PWR
Text Label 5550 3700 0    50   ~ 0
SCSI_DAT7
Wire Wire Line
	8250 1000 8250 1700
Wire Wire Line
	7900 1000 7900 1800
$EndSCHEMATC