📄 addbcd.sch
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VLG xor xor22(w1,A,B);
VLG nand nand21(w4,B,A);
VLG nand nand22(w3,B,C);
VLG nand nand23(w2,A,C);
VLG nand nand31(Carry,w4,w3,w2);
VLG endmodule
VLG
VLG module Sub4( X0,X3,X2,X1,LSB0,LSB3,LSB2,LSB1);
VLG input X0,X3,X2,X1;
VLG output LSB0,LSB3,LSB2,LSB1;
VLG wire w1,w2,w3,w4,w5,w6,w7,w8;
VLG wire w9,w10,w11,w12,w13,w14,w15,w16;
VLG wire w17,w18,w19,w20,w21,w22,w23,w24;
VLG not not11(w8,vdd);
VLG not not12(w4,vdd);
VLG not not13(w1,vss);
VLG not not14(w7,vss);
VLG fadd fadd1( w2,w8,X1,LSB1,w6);
VLG fadd fadd2( w6,w7,X2,LSB2,w3);
VLG fadd fadd3( w3,w4,X3,LSB3,w5);
VLG fadd fadd4( vdd,w1,X0,LSB0,w2);
VLG endmodule
FSYM
SYM #vss
BB(580,-58,590,-50)
TITLE 584 -53 #vss
MODEL 0
PROP
REC(580,-60,0,0,b)
VIS 0
PIN(585,-60,0.000,0.000)vss
LIG(585,-60,585,-55)
LIG(580,-55,590,-55)
LIG(580,-52,582,-55)
LIG(582,-52,584,-55)
LIG(584,-52,586,-55)
LIG(586,-52,588,-55)
FSYM
SYM #vss
BB(500,-113,510,-105)
TITLE 504 -108 #vss
MODEL 0
PROP
REC(500,-115,0,0,b)
VIS 0
PIN(505,-115,0.000,0.000)vss
LIG(505,-115,505,-110)
LIG(500,-110,510,-110)
LIG(500,-107,502,-110)
LIG(502,-107,504,-110)
LIG(504,-107,506,-110)
LIG(506,-107,508,-110)
FSYM
SYM #MSB
BB(525,-115,550,-75)
TITLE 525 -95 #digit
MODEL 89
PROP
REC(530,-105,15,21,r)
VIS 0
PIN(530,-75,0.000,0.000)MSB3
PIN(535,-75,0.000,0.000)MSB2
PIN(540,-75,0.000,0.000)MSB1
PIN(545,-75,0.000,0.000)MSB0
PIN(545,-115,0.000,0.000)K
LIG(545,-115,545,-114)
LIG(545,-112,545,-112)
LIG(525,-110,525,-80)
LIG(550,-110,525,-110)
LIG(550,-80,550,-110)
LIG(525,-80,550,-80)
LIG(530,-80,530,-75)
LIG(535,-80,535,-75)
LIG(540,-80,540,-75)
LIG(545,-80,545,-75)
FSYM
SYM #LSB
BB(550,-115,575,-75)
TITLE 550 -95 #digit
MODEL 89
PROP
REC(555,-105,15,21,r)
VIS 0
PIN(555,-75,0.000,0.000)LSB3
PIN(560,-75,0.000,0.000)LSB2
PIN(565,-75,0.000,0.000)LSB1
PIN(570,-75,0.000,0.000)LSB0
PIN(570,-115,0.000,0.000)K
LIG(570,-115,570,-114)
LIG(570,-112,570,-112)
LIG(550,-110,550,-80)
LIG(575,-110,550,-110)
LIG(575,-80,575,-110)
LIG(550,-80,575,-80)
LIG(555,-80,555,-75)
LIG(560,-80,560,-75)
LIG(565,-80,565,-75)
LIG(570,-80,570,-75)
FSYM
SYM #nmos
BB(500,-15,520,5)
TITLE 505 0 #nmos
MODEL 901
PROP 2.0u 0.25u
REC(500,-14,15,19,r)
VIS 0
PIN(500,5,0.000,0.000)source
PIN(510,-15,0.000,0.000)gate
PIN(520,5,1.000,1.000)drain
LIG(510,-5,510,-15)
LIG(504,-5,516,-5)
LIG(504,-3,516,-3)
LIG(516,5,516,-3)
LIG(520,5,516,5)
LIG(504,5,504,-3)
LIG(500,5,504,5)
VLG nmos nmos(drain,source,gate);
FSYM
SYM #nmos
BB(500,-35,520,-15)
TITLE 505 -20 #nmos
MODEL 901
PROP 2.0u 0.25u
REC(500,-34,15,19,r)
VIS 0
PIN(500,-15,0.000,0.000)source
PIN(510,-35,0.000,0.000)gate
PIN(520,-15,1.000,1.000)drain
LIG(510,-25,510,-35)
LIG(504,-25,516,-25)
LIG(504,-23,516,-23)
LIG(516,-15,516,-23)
LIG(520,-15,516,-15)
LIG(504,-15,504,-23)
LIG(500,-15,504,-15)
VLG nmos nmos(drain,source,gate);
FSYM
SYM #nmos
BB(500,-55,520,-35)
TITLE 505 -40 #nmos
MODEL 901
PROP 2.0u 0.25u
REC(500,-54,15,19,r)
VIS 0
PIN(500,-35,0.000,0.000)source
PIN(510,-55,0.000,0.000)gate
PIN(520,-35,1.000,1.000)drain
LIG(510,-45,510,-55)
LIG(504,-45,516,-45)
LIG(504,-43,516,-43)
LIG(516,-35,516,-43)
LIG(520,-35,516,-35)
LIG(504,-35,504,-43)
LIG(500,-35,504,-35)
VLG nmos nmos(drain,source,gate);
FSYM
SYM #nmos
BB(500,-75,520,-55)
TITLE 505 -60 #nmos
MODEL 901
PROP 2.0u 0.25u
REC(500,-74,15,19,r)
VIS 0
PIN(500,-55,0.000,0.000)source
PIN(510,-75,0.000,0.000)gate
PIN(520,-55,1.000,1.000)drain
LIG(510,-65,510,-75)
LIG(504,-65,516,-65)
LIG(504,-63,516,-63)
LIG(516,-55,516,-63)
LIG(520,-55,516,-55)
LIG(504,-55,504,-63)
LIG(500,-55,504,-55)
VLG nmos nmos(drain,source,gate);
FSYM
SYM #pmos
BB(525,-5,545,15)
TITLE 540 0 #pmos
MODEL 902
PROP 2.0u 0.25u
REC(530,-5,15,19,r)
VIS 0
PIN(525,-5,0.000,0.000)source
PIN(535,15,0.000,0.000)gate
PIN(545,-5,1.000,1.000)drain
LIG(535,15,535,9)
LIG(535,7,535,7)
LIG(541,5,529,5)
LIG(541,3,529,3)
LIG(529,-5,529,3)
LIG(525,-5,529,-5)
LIG(541,-5,541,3)
LIG(545,-5,541,-5)
VLG pmos pmos(drain,source,gate);
FSYM
SYM #pmos
BB(525,-25,545,-5)
TITLE 540 -20 #pmos
MODEL 902
PROP 2.0u 0.25u
REC(530,-25,15,19,r)
VIS 0
PIN(525,-25,0.000,0.000)source
PIN(535,-5,0.000,0.000)gate
PIN(545,-25,1.000,1.000)drain
LIG(535,-5,535,-11)
LIG(535,-13,535,-13)
LIG(541,-15,529,-15)
LIG(541,-17,529,-17)
LIG(529,-25,529,-17)
LIG(525,-25,529,-25)
LIG(541,-25,541,-17)
LIG(545,-25,541,-25)
VLG pmos pmos(drain,source,gate);
FSYM
SYM #pmos
BB(525,-45,545,-25)
TITLE 540 -40 #pmos
MODEL 902
PROP 2.0u 0.25u
REC(530,-45,15,19,r)
VIS 0
PIN(525,-45,0.000,0.000)source
PIN(535,-25,0.000,0.000)gate
PIN(545,-45,1.000,1.000)drain
LIG(535,-25,535,-31)
LIG(535,-33,535,-33)
LIG(541,-35,529,-35)
LIG(541,-37,529,-37)
LIG(529,-45,529,-37)
LIG(525,-45,529,-45)
LIG(541,-45,541,-37)
LIG(545,-45,541,-45)
VLG pmos pmos(drain,source,gate);
FSYM
SYM #pmos
BB(525,15,545,35)
TITLE 540 20 #pmos
MODEL 902
PROP 2.0u 0.25u
REC(530,15,15,19,r)
VIS 0
PIN(525,15,0.000,0.000)source
PIN(535,35,0.000,0.000)gate
PIN(545,15,1.000,1.000)drain
LIG(535,35,535,29)
LIG(535,27,535,27)
LIG(541,25,529,25)
LIG(541,23,529,23)
LIG(529,15,529,23)
LIG(525,15,529,15)
LIG(541,15,541,23)
LIG(545,15,541,15)
VLG pmos pmos(drain,source,gate);
FSYM
CNC(360 -100)
CNC(350 -90)
CNC(340 -80)
CNC(330 -70)
CNC(425 -100)
CNC(545 -55)
CNC(545 -35)
CNC(545 -15)
CNC(545 5)
CNC(400 -55)
CNC(395 -45)
CNC(390 -35)
CNC(385 -25)
CNC(510 -75)
LIG(280,-20,290,-20)
LIG(330,-25,420,-25)
LIG(325,-60,365,-60)
LIG(325,-70,365,-70)
LIG(325,-80,365,-80)
LIG(325,-90,365,-90)
LIG(325,-100,365,-100)
LIG(280,-15,280,-20)
LIG(275,-15,280,-15)
LIG(265,-30,290,-30)
LIG(265,-100,290,-100)
LIG(265,-90,290,-90)
LIG(265,-80,290,-80)
LIG(265,-70,290,-70)
LIG(265,-60,290,-60)
LIG(265,-50,290,-50)
LIG(265,-40,290,-40)
LIG(360,-55,360,-100)
LIG(420,-35,340,-35)
LIG(420,-55,360,-55)
LIG(420,-45,350,-45)
LIG(330,-25,330,-70)
LIG(350,-45,350,-90)
LIG(340,-35,340,-80)
LIG(450,-55,500,-55)
LIG(570,5,570,-75)
LIG(450,-45,475,-45)
LIG(475,-45,475,-35)
LIG(475,-35,500,-35)
LIG(450,-35,470,-35)
LIG(470,-35,470,-15)
LIG(470,-15,500,-15)
LIG(450,-25,465,-25)
LIG(465,-25,465,5)
LIG(465,5,500,5)
LIG(510,-100,510,35)
LIG(405,-100,510,-100)
LIG(520,5,570,5)
LIG(565,-15,565,-75)
LIG(425,-110,425,-100)
LIG(505,-115,570,-115)
LIG(520,-55,555,-55)
LIG(555,-55,555,-75)
LIG(520,-35,560,-35)
LIG(560,-35,560,-75)
LIG(520,-15,565,-15)
LIG(535,-25,535,35)
LIG(535,35,510,35)
LIG(530,-60,585,-60)
LIG(545,-45,545,-55)
LIG(545,-25,545,-35)
LIG(545,-5,545,-15)
LIG(545,15,545,5)
LIG(480,-45,525,-45)
LIG(530,-75,530,-60)
LIG(480,-45,480,-5)
LIG(480,-5,400,-5)
LIG(400,-5,400,-55)
LIG(525,-25,485,-25)
LIG(485,-25,485,0)
LIG(485,0,395,0)
LIG(395,0,395,-45)
LIG(525,-5,490,-5)
LIG(490,-5,490,10)
LIG(490,10,390,10)
LIG(390,10,390,-35)
LIG(525,15,385,15)
LIG(385,15,385,-25)
LIG(510,-75,520,-75)
LIG(540,-75,530,-75)
LIG(520,-75,520,-65)
LIG(520,-65,545,-65)
LIG(545,-65,545,-75)
FFIG C:\Dsch 2.0\Manual\AddBCD.sch
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