hello, i'm new to hspice and i'm trying to make a 2-input NAND gate subcircuit so that i can go on to simulate more complex circuits using this NAND gate. i wrote a short netlist just to test my NAND gate subcircuit (shown below). i basically tied one input to +5V and put a clock signal into the other input. whenever i run the simulation, i get a "hspice job aborted" message because of some error. i have no idea what i'm doing wrong. i included the two model files (nmos.spi and pmos.spi) in my working directory and i've successfully used these models before for other simpler simulations (without any subcircuits). i would greatly appreciate any help i can get. thanks in advance, patrick antoun
NAND Gate Trial ..OPTIONS LIST NODE POST ..TRAN 200P 42N ..PRINT TRAN V(OUT)
*OUTPUT---------------|
*INPUT B------------| |
*INPUT A----------| | |
*GND------------| | | |
*VDD----------| | | | | ..SUBCKT 2NAND 1 2 3 4 6 M1 6 3 1 1 PCH L=1U W=20U M2 6 4 1 1 PCH L=1U W=20U M3 6 3 5 5 NCH L=1U W=20U M4 5 4 2 2 NCH L=1U W=20U ..MODEL PCH PMOS LEVEL=1 ..MODEL NCH NMOS LEVEL=1 ..ENDS 2NAND
VDD VDD 0 5 VA A 0 5 VCLK B 0 0 PULSE 0 5 1F .1N .1N 10N 21N X1 VDD 0 A B OUT 2NAND
..MODEL PCH PMOS LEVEL=1 ..MODEL NCH NMOS LEVEL=1
..END