fa .protect .lib '/home2/icds11/spice/techfile/mm0355v.l' tt .unprotect .option post .global vdd vss vdd vdd 0 3.3v vss vss 0 0v .subckt inv in out mp out in vdd vdd pch w=6.5u l=0.35u mn out in vss vss nch w=3.5u l=0.35u .ends .subckt nand ina inb out1 mp1 out1 ina vdd vdd pch w=6.5u l=0.35u mp2 out1 inb vdd vdd pch w=6.5u l=0.35u mn1 out1 ina vx vss nch w=3.5u l=0.35u mn2 vx inb vss vss nch w=3.5u l=0.35u .ends .subckt xor a b out1 xnand1 a b c nand xnand2 a c d nand xnand3 b c e nand xnand4 d e out1 nand .ends .subckt and a b out1 xnand1 a b out nand xinv1 out out1 inv .ends .subckt or a b out1 xinv1 a a1 inv xinv2 b b1 inv xand1 a1 b1 out1 and .ends .subckt fa a b c co sum xxor1 b c d xor xxor2 a d sum xor xand1 a b e and xand2 a c f and xand3 b c g and xor1 f g h or xor2 e h co or .ends vina a vss pulse(0 3.3 0 0.01n 0.01n 0.5n 1n) vinb b vss pulse(0 3.3 0 0.01n 0.01n 0.5n 1n) vinc c vss pulse(0 3.3 0 0.01n 0.01n 0.5n 1n) xfa a b c co sum fa .tran 10p 3n .probe .op .end 这是小弟写的全加器 HSPICE会过 但是波形只有SUM会对 CARRY OUT却是错的 请问高手可以帮忙找出错的地方吗 还是设定电压的值的问题? 请各位大大帮忙一下 --

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