EESchema Schematic File Version 4 LIBS:z86c91-cache EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 1 1 Title "" Date "" Rev "" Comp "" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L Connector_Generic:Conn_01x40 J1 U 1 1 5D4D81A3 P 850 2850 F 0 "J1" H 768 4967 50 0000 C CNN F 1 "Conn_01x40" H 768 4876 50 0000 C CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_1x40_P2.54mm_Horizontal" H 850 2850 50 0001 C CNN F 3 "~" H 850 2850 50 0001 C CNN 1 850 2850 -1 0 0 -1 $EndComp Text GLabel 1050 950 2 50 Input ~ 0 A15 Text GLabel 1050 1050 2 50 Input ~ 0 A14 Text GLabel 1050 1150 2 50 Input ~ 0 A13 Text GLabel 1050 1250 2 50 Input ~ 0 A12 Text GLabel 1050 1350 2 50 Input ~ 0 A11 Text GLabel 1050 1450 2 50 Input ~ 0 A10 Text GLabel 1050 1550 2 50 Input ~ 0 A9 Text GLabel 1050 1650 2 50 Input ~ 0 A8 Text GLabel 1050 1750 2 50 Input ~ 0 A7 Text GLabel 1050 1850 2 50 Input ~ 0 A6 Text GLabel 1050 1950 2 50 Input ~ 0 A5 Text GLabel 1050 2050 2 50 Input ~ 0 A4 Text GLabel 1050 2150 2 50 Input ~ 0 A3 Text GLabel 1050 2250 2 50 Input ~ 0 A2 Text GLabel 1050 2350 2 50 Input ~ 0 A1 Text GLabel 1050 2450 2 50 Input ~ 0 A0 Text GLabel 1050 2550 2 50 Output ~ 0 GND Text GLabel 1050 2650 2 50 Output ~ 0 VCC Text GLabel 1050 2750 2 50 Input ~ 0 M1 Text GLabel 1050 2850 2 50 3State ~ 0 RESET Text GLabel 1050 2950 2 50 Input ~ 0 CLK Text GLabel 1050 3050 2 50 3State ~ 0 INT Text GLabel 1050 3150 2 50 Input ~ 0 MREQ Text GLabel 1050 3250 2 50 Input ~ 0 WR Text GLabel 1050 3350 2 50 Input ~ 0 RD Text GLabel 1050 3450 2 50 Input ~ 0 IORQ Text GLabel 1050 3550 2 50 3State ~ 0 D0 Text GLabel 1050 3650 2 50 3State ~ 0 D1 Text GLabel 1050 3750 2 50 3State ~ 0 D2 Text GLabel 1050 3850 2 50 3State ~ 0 D3 Text GLabel 1050 3950 2 50 3State ~ 0 D4 Text GLabel 1050 4050 2 50 3State ~ 0 D5 Text GLabel 1050 4150 2 50 3State ~ 0 D6 Text GLabel 1050 4250 2 50 3State ~ 0 D7 $Comp L Alan:Z86C91-DIP40 U1 U 1 1 5D79AAEA P 5500 3250 F 0 "U1" H 5950 4750 50 0000 C CNN F 1 "Z86C91-DIP40" H 6000 4650 50 0000 C CNN F 2 "Package_DIP:DIP-40_W15.24mm" H 5500 4350 50 0001 C CNN F 3 "" H 5500 4350 50 0001 C CNN 1 5500 3250 1 0 0 -1 $EndComp $Comp L power:GND #PWR0101 U 1 1 5D79B6FE P 5500 4500 F 0 "#PWR0101" H 5500 4250 50 0001 C CNN F 1 "GND" H 5505 4327 50 0000 C CNN F 2 "" H 5500 4500 50 0001 C CNN F 3 "" H 5500 4500 50 0001 C CNN 1 5500 4500 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0102 U 1 1 5D79B9FE P 5500 2050 F 0 "#PWR0102" H 5500 1900 50 0001 C CNN F 1 "VCC" H 5517 2223 50 0000 C CNN F 2 "" H 5500 2050 50 0001 C CNN F 3 "" H 5500 2050 50 0001 C CNN 1 5500 2050 1 0 0 -1 $EndComp $Comp L 74xx:74LS573 U2 U 1 1 5D79C045 P 7850 4100 F 0 "U2" H 8250 5150 50 0000 C CNN F 1 "74HCT573" H 8300 5050 50 0000 C CNN F 2 "Package_DIP:DIP-20_W7.62mm" H 7850 4100 50 0001 C CNN F 3 "74xx/74hc573.pdf" H 7850 4100 50 0001 C CNN 1 7850 4100 1 0 0 -1 $EndComp $Comp L power:GND #PWR0103 U 1 1 5D79D6D1 P 7850 4900 F 0 "#PWR0103" H 7850 4650 50 0001 C CNN F 1 "GND" H 7855 4727 50 0000 C CNN F 2 "" H 7850 4900 50 0001 C CNN F 3 "" H 7850 4900 50 0001 C CNN 1 7850 4900 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0104 U 1 1 5D79DBE0 P 7850 3300 F 0 "#PWR0104" H 7850 3150 50 0001 C CNN F 1 "VCC" H 7867 3473 50 0000 C CNN F 2 "" H 7850 3300 50 0001 C CNN F 3 "" H 7850 3300 50 0001 C CNN 1 7850 3300 1 0 0 -1 $EndComp Wire Wire Line 7350 4600 7350 4900 Wire Wire Line 7350 4900 7850 4900 Connection ~ 7850 4900 Wire Wire Line 6150 3600 7000 3600 Wire Wire Line 6150 3700 6900 3700 Wire Wire Line 6150 3800 6800 3800 Wire Wire Line 6150 3900 6700 3900 Wire Wire Line 6150 4000 6600 4000 Wire Wire Line 7350 4100 6500 4100 Wire Wire Line 6150 4200 6400 4200 Wire Wire Line 6150 4300 6300 4300 Text GLabel 8350 3600 2 50 Output ~ 0 A7 Text GLabel 8350 3700 2 50 Output ~ 0 A6 Text GLabel 8350 3800 2 50 Output ~ 0 A5 Text GLabel 8350 3900 2 50 Output ~ 0 A4 Text GLabel 8350 4000 2 50 Output ~ 0 A3 Text GLabel 8350 4100 2 50 Output ~ 0 A2 Text GLabel 8350 4200 2 50 Output ~ 0 A1 Text GLabel 8350 4300 2 50 Output ~ 0 A0 Text GLabel 6150 2700 2 50 Output ~ 0 A15 Text GLabel 6150 2800 2 50 Output ~ 0 A14 Text GLabel 6150 2900 2 50 Output ~ 0 A13 Text GLabel 6150 3000 2 50 Output ~ 0 A12 Text GLabel 6150 3100 2 50 Output ~ 0 A11 Text GLabel 6150 3200 2 50 Output ~ 0 A10 Text GLabel 6150 3300 2 50 Output ~ 0 A9 Text GLabel 6150 3400 2 50 Output ~ 0 A8 Text GLabel 4850 2700 0 50 Output ~ 0 TX Text GLabel 4850 3400 0 50 Input ~ 0 RX $Comp L 74xx:74HCT00 U3 U 1 1 5D7A6F30 P 6800 2450 F 0 "U3" H 6800 2775 50 0000 C CNN F 1 "74HCT00" H 6800 2684 50 0000 C CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 6800 2450 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74hct00" H 6800 2450 50 0001 C CNN 1 6800 2450 1 0 0 -1 $EndComp Wire Wire Line 6500 2350 6500 2450 Wire Wire Line 6150 2450 6500 2450 Connection ~ 6500 2450 Wire Wire Line 6500 2450 6500 2550 Wire Wire Line 7100 2450 7100 4500 Wire Wire Line 7100 4500 7350 4500 Text GLabel 6300 4750 3 50 3State ~ 0 D0 Text GLabel 6400 4750 3 50 3State ~ 0 D1 Text GLabel 6500 4750 3 50 3State ~ 0 D2 Text GLabel 6600 4750 3 50 3State ~ 0 D3 Text GLabel 6700 4750 3 50 3State ~ 0 D4 Text GLabel 6800 4750 3 50 3State ~ 0 D5 Text GLabel 6900 4750 3 50 3State ~ 0 D6 Text GLabel 7000 4750 3 50 3State ~ 0 D7 Wire Wire Line 7000 4750 7000 3600 Connection ~ 7000 3600 Wire Wire Line 7000 3600 7350 3600 Wire Wire Line 6900 4750 6900 3700 Connection ~ 6900 3700 Wire Wire Line 6900 3700 7350 3700 Wire Wire Line 6800 4750 6800 3800 Connection ~ 6800 3800 Wire Wire Line 6800 3800 7350 3800 Wire Wire Line 6700 4750 6700 3900 Connection ~ 6700 3900 Wire Wire Line 6700 3900 7350 3900 Wire Wire Line 6600 4750 6600 4000 Connection ~ 6600 4000 Wire Wire Line 6600 4000 7350 4000 Wire Wire Line 6500 4750 6500 4100 Connection ~ 6500 4100 Wire Wire Line 6500 4100 6150 4100 Wire Wire Line 6400 4750 6400 4200 Connection ~ 6400 4200 Wire Wire Line 6400 4200 7350 4200 Wire Wire Line 6300 4750 6300 4300 Connection ~ 6300 4300 Wire Wire Line 6300 4300 7350 4300 Text GLabel 4850 2500 0 50 Input ~ 0 RESET $Comp L 74xx:74LS139 U4 U 1 1 5D7B2A2E P 5500 1150 F 0 "U4" H 5500 1517 50 0000 C CNN F 1 "74HCT139" H 5500 1426 50 0000 C CNN F 2 "Package_DIP:DIP-16_W7.62mm" H 5500 1150 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS139" H 5500 1150 50 0001 C CNN 1 5500 1150 1 0 0 -1 $EndComp Text GLabel 6150 2250 2 50 Output ~ 0 RW Text GLabel 6150 2350 2 50 Output ~ 0 DS Text GLabel 5000 1150 0 50 Input ~ 0 RW Text GLabel 5000 1050 0 50 Input ~ 0 DS Text GLabel 6000 1050 2 50 Output ~ 0 WR Text GLabel 6000 1150 2 50 Output ~ 0 RD Text GLabel 5000 1350 0 50 Input ~ 0 GND Text GLabel 4850 2350 0 50 Input ~ 0 CLK NoConn ~ 4850 2250 Wire Wire Line 4850 3200 3600 3200 $Comp L Device:R R1 U 1 1 5D7C2BCA P 3750 1950 F 0 "R1" H 3820 1996 50 0000 L CNN F 1 "10K" H 3820 1905 50 0000 L CNN F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 3680 1950 50 0001 C CNN F 3 "~" H 3750 1950 50 0001 C CNN 1 3750 1950 1 0 0 -1 $EndComp $Comp L Device:R R2 U 1 1 5D7C2FA9 P 4000 1950 F 0 "R2" H 4070 1996 50 0000 L CNN F 1 "10K" H 4070 1905 50 0000 L CNN F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 3930 1950 50 0001 C CNN F 3 "~" H 4000 1950 50 0001 C CNN 1 4000 1950 1 0 0 -1 $EndComp Wire Wire Line 4850 3300 3750 3300 Wire Wire Line 3750 3300 3750 2100 Wire Wire Line 4000 3100 4000 2100 Wire Wire Line 3750 1800 4000 1800 $Comp L power:VCC #PWR0105 U 1 1 5D7C6253 P 3750 1800 F 0 "#PWR0105" H 3750 1650 50 0001 C CNN F 1 "VCC" H 3767 1973 50 0000 C CNN F 2 "" H 3750 1800 50 0001 C CNN F 3 "" H 3750 1800 50 0001 C CNN 1 3750 1800 1 0 0 -1 $EndComp Connection ~ 3750 1800 Wire Wire Line 3000 3100 3000 3200 $Comp L Device:R R3 U 1 1 5D7C7201 P 2800 1950 F 0 "R3" H 2870 1996 50 0000 L CNN F 1 "10K" H 2870 1905 50 0000 L CNN F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 2730 1950 50 0001 C CNN F 3 "~" H 2800 1950 50 0001 C CNN 1 2800 1950 1 0 0 -1 $EndComp $Comp L Device:R R4 U 1 1 5D7C80C8 P 2350 1950 F 0 "R4" H 2420 1996 50 0000 L CNN F 1 "10K" H 2420 1905 50 0000 L CNN F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 2280 1950 50 0001 C CNN F 3 "~" H 2350 1950 50 0001 C CNN 1 2350 1950 1 0 0 -1 $EndComp Wire Wire Line 3750 1800 2800 1800 Connection ~ 2800 1800 Wire Wire Line 2800 1800 2350 1800 Wire Wire Line 2800 2100 2800 3200 Connection ~ 3000 3200 Wire Wire Line 3000 3200 3000 3300 Text GLabel 2500 3200 0 50 3State ~ 0 INT Wire Wire Line 2500 3200 2800 3200 Connection ~ 2800 3200 Wire Wire Line 2800 3200 3000 3200 Text GLabel 2350 2550 3 50 Output ~ 0 M1 Wire Wire Line 2350 2100 2350 2550 NoConn ~ 6000 1250 NoConn ~ 6000 1350 $Comp L 74xx:74HCT00 U3 U 2 1 5D7D4B68 P 3300 3200 F 0 "U3" H 3300 3525 50 0000 C CNN F 1 "74HCT00" H 3300 3434 50 0000 C CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 3300 3200 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74hct00" H 3300 3200 50 0001 C CNN 2 3300 3200 1 0 0 -1 $EndComp Wire Wire Line 4000 3100 4850 3100 Text GLabel 4850 3000 0 50 Output ~ 0 DM $Comp L 74xx:74LS139 U4 U 2 1 5D7F53F3 P 7850 1700 F 0 "U4" H 7850 2067 50 0000 C CNN F 1 "74HCT139" H 7850 1976 50 0000 C CNN F 2 "Package_DIP:DIP-16_W7.62mm" H 7850 1700 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS139" H 7850 1700 50 0001 C CNN 2 7850 1700 1 0 0 -1 $EndComp Text GLabel 4850 3700 0 50 Output ~ 0 IOCS NoConn ~ 8350 1700 Text Notes 1600 6150 0 50 ~ 0 TODO\nDesign MMU companion\nDo we want to include A15 in U4B or just switch entirely I/O v Memory for full 16bit range ?\nSee if we can use SCLK on P36 with Tout to do a sick SPI hack or two\n $Comp L 74xx:74HCT00 U3 U 4 1 5D859E4E P 6250 6200 F 0 "U3" H 6250 6525 50 0000 C CNN F 1 "74HCT00" H 6250 6434 50 0000 C CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 6250 6200 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74hct00" H 6250 6200 50 0001 C CNN 4 6250 6200 1 0 0 -1 $EndComp $Comp L 74xx:74HCT00 U3 U 5 1 5D85B10E P 5450 6900 F 0 "U3" H 5680 6946 50 0000 L CNN F 1 "74HCT00" H 5680 6855 50 0000 L CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 5450 6900 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74hct00" H 5450 6900 50 0001 C CNN 5 5450 6900 1 0 0 -1 $EndComp $Comp L 74xx:74LS139 U4 U 3 1 5D85C8A7 P 4650 6900 F 0 "U4" H 4880 6946 50 0000 L CNN F 1 "74HCT139" H 4880 6855 50 0000 L CNN F 2 "Package_DIP:DIP-16_W7.62mm" H 4650 6900 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS139" H 4650 6900 50 0001 C CNN 3 4650 6900 1 0 0 -1 $EndComp $Comp L Device:C C3 U 1 1 5D8610CC P 2100 7000 F 0 "C3" H 2215 7046 50 0000 L CNN F 1 "0.1uF" H 2215 6955 50 0000 L CNN F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 2138 6850 50 0001 C CNN F 3 "~" H 2100 7000 50 0001 C CNN 1 2100 7000 1 0 0 -1 $EndComp $Comp L Device:C C4 U 1 1 5D86228E P 2550 7000 F 0 "C4" H 2665 7046 50 0000 L CNN F 1 "0.1uF" H 2665 6955 50 0000 L CNN F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 2588 6850 50 0001 C CNN F 3 "~" H 2550 7000 50 0001 C CNN 1 2550 7000 1 0 0 -1 $EndComp $Comp L Device:C C2 U 1 1 5D862698 P 1650 7000 F 0 "C2" H 1765 7046 50 0000 L CNN F 1 "0.1uF" H 1765 6955 50 0000 L CNN F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 1688 6850 50 0001 C CNN F 3 "~" H 1650 7000 50 0001 C CNN 1 1650 7000 1 0 0 -1 $EndComp $Comp L Device:C C1 U 1 1 5D862BBF P 1200 7000 F 0 "C1" H 1315 7046 50 0000 L CNN F 1 "0.1uF" H 1315 6955 50 0000 L CNN F 2 "Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm" H 1238 6850 50 0001 C CNN F 3 "~" H 1200 7000 50 0001 C CNN 1 1200 7000 1 0 0 -1 $EndComp $Comp L power:GND #PWR0106 U 1 1 5D86406A P 1200 7150 F 0 "#PWR0106" H 1200 6900 50 0001 C CNN F 1 "GND" H 1205 6977 50 0000 C CNN F 2 "" H 1200 7150 50 0001 C CNN F 3 "" H 1200 7150 50 0001 C CNN 1 1200 7150 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0107 U 1 1 5D86472C P 1200 6850 F 0 "#PWR0107" H 1200 6700 50 0001 C CNN F 1 "VCC" H 1217 7023 50 0000 C CNN F 2 "" H 1200 6850 50 0001 C CNN F 3 "" H 1200 6850 50 0001 C CNN 1 1200 6850 1 0 0 -1 $EndComp Text GLabel 750 6850 0 50 Input ~ 0 VCC Text GLabel 750 7150 0 50 Input ~ 0 GND Wire Wire Line 750 6850 1200 6850 Connection ~ 1200 6850 Wire Wire Line 1200 6850 1650 6850 Connection ~ 1650 6850 Wire Wire Line 1650 6850 1950 6850 Connection ~ 2100 6850 Wire Wire Line 2100 6850 2550 6850 Wire Wire Line 750 7150 1200 7150 Connection ~ 1200 7150 Wire Wire Line 1200 7150 1650 7150 Connection ~ 1650 7150 Wire Wire Line 1650 7150 1950 7150 Connection ~ 2100 7150 Wire Wire Line 2100 7150 2550 7150 $Comp L power:PWR_FLAG #FLG0101 U 1 1 5D868C0C P 1950 6850 F 0 "#FLG0101" H 1950 6925 50 0001 C CNN F 1 "PWR_FLAG" H 1950 7023 50 0000 C CNN F 2 "" H 1950 6850 50 0001 C CNN F 3 "~" H 1950 6850 50 0001 C CNN 1 1950 6850 1 0 0 -1 $EndComp Connection ~ 1950 6850 Wire Wire Line 1950 6850 2100 6850 $Comp L power:PWR_FLAG #FLG0102 U 1 1 5D869314 P 1950 7150 F 0 "#FLG0102" H 1950 7225 50 0001 C CNN F 1 "PWR_FLAG" H 1950 7323 50 0000 C CNN F 2 "" H 1950 7150 50 0001 C CNN F 3 "~" H 1950 7150 50 0001 C CNN 1 1950 7150 -1 0 0 1 $EndComp Connection ~ 1950 7150 Wire Wire Line 1950 7150 2100 7150 $Comp L power:GND #PWR0108 U 1 1 5D876E23 P 4650 7400 F 0 "#PWR0108" H 4650 7150 50 0001 C CNN F 1 "GND" H 4655 7227 50 0000 C CNN F 2 "" H 4650 7400 50 0001 C CNN F 3 "" H 4650 7400 50 0001 C CNN 1 4650 7400 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0109 U 1 1 5D8775E4 P 4650 6400 F 0 "#PWR0109" H 4650 6250 50 0001 C CNN F 1 "VCC" H 4667 6573 50 0000 C CNN F 2 "" H 4650 6400 50 0001 C CNN F 3 "" H 4650 6400 50 0001 C CNN 1 4650 6400 1 0 0 -1 $EndComp Wire Wire Line 5950 6100 5950 6300 Wire Wire Line 5950 6400 5450 6400 Connection ~ 5950 6300 Wire Wire Line 5950 6300 5950 6400 Connection ~ 4650 6400 Connection ~ 5450 6400 Wire Wire Line 5450 6400 4650 6400 Wire Wire Line 4650 7400 5450 7400 Connection ~ 4650 7400 NoConn ~ 6550 6200 $Comp L Oscillator:CXO_DIP8 X1 U 1 1 5D88A4CC P 9300 5650 F 0 "X1" H 9700 6150 50 0000 L CNN F 1 "CXO_DIP8" H 9600 6250 50 0000 L CNN F 2 "Oscillator:Oscillator_DIP-8" H 9750 5300 50 0001 C CNN F 3 "http://cdn-reichelt.de/documents/datenblatt/B400/OSZI.pdf" H 9200 5650 50 0001 C CNN 1 9300 5650 1 0 0 -1 $EndComp $Comp L power:GND #PWR0110 U 1 1 5D88D478 P 9300 5950 F 0 "#PWR0110" H 9300 5700 50 0001 C CNN F 1 "GND" H 9305 5777 50 0000 C CNN F 2 "" H 9300 5950 50 0001 C CNN F 3 "" H 9300 5950 50 0001 C CNN 1 9300 5950 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0111 U 1 1 5D88E0C5 P 9300 5350 F 0 "#PWR0111" H 9300 5200 50 0001 C CNN F 1 "VCC" H 9317 5523 50 0000 C CNN F 2 "" H 9300 5350 50 0001 C CNN F 3 "" H 9300 5350 50 0001 C CNN 1 9300 5350 1 0 0 -1 $EndComp Text GLabel 9600 5650 2 50 Output ~ 0 CLK NoConn ~ 9000 5650 $Comp L Connector:Conn_01x07_Male J2 U 1 1 5D892E9C P 2800 850 F 0 "J2" V 2635 828 50 0000 C CNN F 1 "Conn_01x07_Male" V 2726 828 50 0000 C CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Horizontal" H 2800 850 50 0001 C CNN F 3 "~" H 2800 850 50 0001 C CNN 1 2800 850 0 1 1 0 $EndComp Text GLabel 2500 1050 3 50 Input ~ 0 VCC Text GLabel 2600 1050 3 50 Input ~ 0 GND Text GLabel 2700 1050 3 50 Output ~ 0 MISO Text GLabel 2800 1050 3 50 Input ~ 0 MOSI Text GLabel 2900 1050 3 50 Input ~ 0 SCLK Text GLabel 3000 1050 3 50 Input ~ 0 CS0 Text GLabel 3100 1050 3 50 Input ~ 0 CS1 Text GLabel 4850 3800 0 50 Output ~ 0 CS1 Text GLabel 4850 2900 0 50 Output ~ 0 CS0 Text GLabel 4850 3900 0 50 Output ~ 0 CTS Text GLabel 4850 2800 0 50 Output ~ 0 SCLK Text GLabel 4850 3600 0 50 Output ~ 0 MOSI Text GLabel 4850 4300 0 50 Input ~ 0 MISO NoConn ~ 8350 1600 NoConn ~ 8350 1900 Connection ~ 8750 1900 Wire Wire Line 8750 2100 9350 2100 Wire Wire Line 8750 1900 8750 2100 Text GLabel 9350 2100 2 50 Output ~ 0 IORQ Text GLabel 9350 1800 2 50 Output ~ 0 MREQ Wire Wire Line 8750 1800 8750 1900 Connection ~ 8750 1800 Wire Wire Line 8350 1800 8750 1800 Wire Wire Line 8750 1700 8750 1800 $Comp L 74xx:74HCT00 U3 U 3 1 5D80ADDD P 9050 1800 F 0 "U3" H 9050 2125 50 0000 C CNN F 1 "74HCT00" H 9050 2034 50 0000 C CNN F 2 "Package_DIP:DIP-14_W7.62mm" H 9050 1800 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74hct00" H 9050 1800 50 0001 C CNN 3 9050 1800 1 0 0 -1 $EndComp Text GLabel 7350 1700 0 50 Input ~ 0 DM Text GLabel 7350 1600 0 50 Input ~ 0 A15 Text GLabel 7350 1900 0 50 Input ~ 0 IOCS $Comp L Connector:Conn_01x04_Male J4 U 1 1 5D8EB1F4 P 10700 3150 F 0 "J4" H 10672 3032 50 0000 R CNN F 1 "Conn_01x04_Male" H 10672 3123 50 0000 R CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal" H 10700 3150 50 0001 C CNN F 3 "~" H 10700 3150 50 0001 C CNN 1 10700 3150 -1 0 0 1 $EndComp Text GLabel 10500 2950 0 50 Input ~ 0 GND $Comp L Device:R R5 U 1 1 5D8ED4C6 P 10050 3050 F 0 "R5" V 9843 3050 50 0000 C CNN F 1 "1K" V 9934 3050 50 0000 C CNN F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 9980 3050 50 0001 C CNN F 3 "~" H 10050 3050 50 0001 C CNN 1 10050 3050 0 1 1 0 $EndComp $Comp L Device:R R6 U 1 1 5D8EF7B1 P 10050 3150 F 0 "R6" V 9843 3150 50 0000 C CNN F 1 "1K" V 9934 3150 50 0000 C CNN F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 9980 3150 50 0001 C CNN F 3 "~" H 10050 3150 50 0001 C CNN 1 10050 3150 0 1 1 0 $EndComp $Comp L Device:R R7 U 1 1 5D8EFD15 P 10050 3250 F 0 "R7" V 9843 3250 50 0000 C CNN F 1 "1K" V 9934 3250 50 0000 C CNN F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 9980 3250 50 0001 C CNN F 3 "~" H 10050 3250 50 0001 C CNN 1 10050 3250 0 1 1 0 $EndComp Text GLabel 9900 3050 0 50 Output ~ 0 RX Text GLabel 9900 3150 0 50 Input ~ 0 TX Text GLabel 9900 3250 0 50 Input ~ 0 CTS Wire Wire Line 10200 3050 10500 3050 Wire Wire Line 10200 3150 10500 3150 Wire Wire Line 10200 3250 10500 3250 Text GLabel 2150 3850 1 50 Output ~ 0 RX Text GLabel 2650 3750 1 50 Input ~ 0 TX $Comp L Device:Jumper JP2 U 1 1 5D91EEE3 P 2150 4150 F 0 "JP2" V 2104 4277 50 0000 L CNN F 1 "Jumper" V 2195 4277 50 0000 L CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 2150 4150 50 0001 C CNN F 3 "~" H 2150 4150 50 0001 C CNN 1 2150 4150 0 1 1 0 $EndComp $Comp L Device:Jumper JP1 U 1 1 5D92E266 P 2650 4050 F 0 "JP1" V 2604 4177 50 0000 L CNN F 1 "Jumper" V 2695 4177 50 0000 L CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 2650 4050 50 0001 C CNN F 3 "~" H 2650 4050 50 0001 C CNN 1 2650 4050 0 1 1 0 $EndComp Wire Wire Line 1050 4450 2150 4450 Wire Wire Line 1050 4350 2650 4350 Text GLabel 4850 4000 0 50 Output ~ 0 P23 Text GLabel 4850 4100 0 50 Output ~ 0 P22 Text GLabel 4850 4200 0 50 Output ~ 0 P21 NoConn ~ 1050 4650 NoConn ~ 1050 4750 NoConn ~ 1050 4850 $Comp L Connector:Conn_01x04_Male J3 U 1 1 5D97AFF5 P 10200 4200 F 0 "J3" H 10172 4082 50 0000 R CNN F 1 "Conn_01x04_Male" H 10172 4173 50 0000 R CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 10200 4200 50 0001 C CNN F 3 "~" H 10200 4200 50 0001 C CNN 1 10200 4200 -1 0 0 1 $EndComp Text GLabel 10000 4000 0 50 Input ~ 0 DM Text GLabel 10000 4100 0 50 Input ~ 0 P21 Text GLabel 10000 4200 0 50 Input ~ 0 P22 Text GLabel 10000 4300 0 50 Input ~ 0 P23 NoConn ~ 1050 4550 Text Notes 1600 5250 0 50 ~ 0 0.2\nCorrected footprint of U4\n $EndSCHEMATC