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Regarding synopsis hspice

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srini.pes

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Dear all,

am doing one 4-bit adder,
when i am simulating in hspice, it is not going further.
it was stopping at the line of fourth full adder.
when i have removed the last full adder (with 3-Full Adder and 1-Half Adder), it was working fine.
Please clarify this to me.

here i have added few lines of code as a ref.


XHA1 A B S0 D1 Vdd Gnd HA
XFA1 A A D1 S1 Co1 Vdd Gnd FA
XFA2 B B Co1 S2 Co2 Vdd Gnd FA
XFA3 C C Co2 S3 Co3 Vdd Gnd FA
XFA4 A B Co3 S4 CO4 Vdd Gnd FA


Thanks
SRINI
 

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