I have a strange trouble with a NetList Spice The trouble is relative to vdd. vdd 2000 0 dc 5 returns: Node '2000' has only one component connected Node 2000 is an input node for the subcircuit MAIN PROJECT00_PRELAYOUT_01 1000 2000 3000 4000 Someone can help me ? The NetList (generated by LasiCkt) is the following: ** SPICE Circuit File of PROJECT00_PRELAYOUT_01 - LasiCkt 7.0.3.0 03/31/08 10:27:00 * Start of L:\Lasi7\Project00_prelayout_01.hdr ..options reltol=.01 rshunt=1e9 ..global vdd vdd 2000 0 dc 5 cout 4000 0 500fF vclkinput 1000 0 dc 0 pulse 0 5 0n 1n 1n 25ns 50ns ..control set color5=orange set color6=lt_cyan set color8=pink set color9=lt_grey destroy all save all *plot v(3000) v(4000)+10 ..endc * End of L:\Lasi7\Project00_prelayout_01.hdr ..SUBCKT INVERTER VDD IN OUT M1 OUT IN 0 0 NMOS1 L=2 W=10 M2 OUT IN VDD VDD PMOS1 L=2 W=30 ..ENDS ..SUBCKT PROJECT00_NOR GRD Vin1 Vin2 VDD Vout M_NOR_NMOS1 Vout Vin1 GRD GRD NMOS1 L=2 W=10 M_NOR_NMOS2 Vout Vin2 GRD GRD NMOS1 L=2 W=10 M_NOR_PMOS1 vn1 Vin1 VDD GRD PMOS1 L=1 W=30 M_NOR_PMOS2 Vout Vin2 vn1 GRD PMOS1 L=1 W=30 ..ENDS ..SUBCKT PROJECT00_PASSGATE vn1 vn2 vn3 vn4 M_PGATE_NMOS vn1 vn3 vn2 0 NMOS1 L=2 W=20 M_PGATE_PMOS vn1 vn4 vn2 0 PMOS1 L=2 W=20 ..ENDS * MAIN PROJECT00_PRELAYOUT_01 1000 2000 3000 4000 XCLKGEN_INVA1 2000 102 103 INVERTER XCLKGEN_INVA2 2000 103 200 INVERTER XCLKGEN_INVB1 2000 110 111 INVERTER XCLKGEN_INVB2 2000 111 112 INVERTER XCLKGEN_NOR1 0 112 1000 2000 102 PROJECT00_NOR XCLKGEN_NOR2 0 101 200 2000 110 PROJECT00_NOR XINV_LEV1 2000 vn1 vn2 INVERTER XINV_LEV2 2000 vn3 4000 INVERTER XINVERTER_CLKGEN 2000 1000 101 INVERTER XPASSGATE_LEV1 3000 vn1 112 111 PROJECT00_PASSGATE XPASSGATE_LEV2 vn2 vn3 200 103 PROJECT00_PASSGATE * Start of Edulib.ftr * Basic Level 1 default model for nchan ..MODEL NMOS1 NMOS KP=4.5e-5 vto=.75 * Basic Level 1 default model for pchan ..MODEL PMOS1 PMOS KP=1.5e-5 vto=-.75 * Level 3 SPICE model for CMOS14TB 0.5 um ..MODEL CMOSN5 NMOS LEVEL=3 PHI=0.700000 + TOX=9.6000E-09 XJ=0.200000U TPG=1 + VTO=0.7118 DELTA=2.3060E-01 LD=2.9830E-08 KP=1.8201E-04 + UO=506.0 THETA=1.9090E-01 RSH=1.8940E+01 GAMMA=0.6051 + NSUB=1.4270E+17 NFS=7.1500E+11 VMAX=2.4960E+05 ETA=2.5510E-02 + KAPPA=1.8530E-01 CGDO=9.0000E-11 CGSO=9.0000E-11 + CGBO=3.7295E-10 CJ=6.02E-04 MJ=0.805 CJSW=2.0E-11 + MJSW=0.761 PB=0.99 * Weff = Wdrawn - Delta_W * The suggested Delta_W is 3.5700E-07 * Level 4 (BSIM) SPICE model for CMOS14TB 0.5 um ..MODEL CMOSNB5 NMOS LEVEL=4 + vfb=-9.65360E-01 lvfb= 4.11254E-02 wvfb=-1.21737E-01 + phi= 9.02436E-01 lphi= 0.00000E+00 wphi= 0.00000E+00 + k1= 9.33674E-01 lk1= -8.15872E-02 wk1= 2.03526E-01 + k2= 7.39228E-02 lk2= 1.48295E-02 wk2= 5.89097E-02 + eta=-2.77969E-03 leta= 1.12296E-02 weta= 1.25263E-03 + muz= 4.71133E+02 dl= 1.57937E-001 dw= 4.09563E-001 + u0= 1.98427E-01 lu0= 1.54850E-01 wu0= -1.05429E-01 + u1= 3.39403E-02 lu1= 3.59469E-02 wu1= -5.00497E-03 + x2mz=1.25728E+01 lx2mz=-1.24115E+01 wx2mz=1.77657E+01 + x2e=-9.95217E-05 lx2e=-5.16949E-03 wx2e= 2.83253E-03 + x3e=-4.27269E-04 lx3e=-1.62632E-03 wx3e=-1.60797E-03 + x2u0=-9.02747E-04 lx2u0=-1.66946E-02 wx2u0=2.48458E-02 + x2u1=-7.29822E-04 lx2u1=2.38803E-03 wx2u1=-9.76918E-04 + mus=5.36631E+02 lmus=2.18647E+01 wmus=4.43373E+00 + x2ms=5.97403E+00 lx2ms=-7.67105E+00 wx2ms=2.19614E+01 + x3ms=7.60054E+00 lx3ms=4.73779E+00 wx3ms=2.59952E+00 + x3u1=1.75532E-02 lx3u1=-1.21628E-03 wx3u1=-5.95548E-04 + tox=9.60000E-003 temp=2.70000E+01 vdd=3.30000E+00 + cgdo=4.26077E-010 cgso=4.26077E-010 cgbo=4.01709E-010 + xpart=1.00000E+000 + n0=1.00000E+000 ln0=0.00000E+000 wn0=0.00000E+000 + nb=0.00000E+000 lnb=0.00000E+000 wnb=0.00000E+000 + nd=0.00000E+000 lnd=0.00000E+000 wnd=0.00000E+000 + rsh=2 cj=6.02e-04 cjsw=2.0e-11 js=1e-08 pb=0.99 + pbsw=0.99 mj=0.805 mjsw=0.761 wdf=0 dell=0 * Level 3 SPICE model for CMOS14TB 0.5 um ..MODEL CMOSP5 PMOS LEVEL=3 PHI=0.700000 + TOX=9.6000E-09 XJ=0.200000U TPG=-1 + VTO=-0.9016 DELTA=4.2020E-01 LD=4.3860E-08 KP=4.1582E-05 + UO=115.6 THETA=3.7990E-02 RSH=9.0910E-02 GAMMA=0.4496 + NSUB=7.8780E+16 NFS=6.4990E+11 VMAX=2.3130E+05 ETA=2.8580E-02 + KAPPA=9.9270E+00 CGDO=9.0000E-11 CGSO=9.0000E-11 + CGBO=3.6835E-10 CJ=9.34E-04 MJ=0.491 CJSW=2.41E-10 + MJSW=0.222 PB=0.90 * Weff = Wdrawn - Delta_W * The suggested Delta_W is 3.4860E-07 * Level 4 (BSIM) SPICE model for CMOS14TB 0.5 um ..MODEL CMOSPB5 PMOS LEVEL=4 + vfb=-2.80568E-01 lvfb=5.70163E-02 wvfb=-6.17493E-02 + phi=8.14689E-01 lphi=0.00000E+00 wphi=0.00000E+00 + k1=4.52973E-01 lk1=-9.19899E-02 wk1=1.20834E-01 + k2=-9.42157E-03 lk2=-2.25562E-03 wk2=3.13315E-02 + eta=-7.03956E-03 leta=1.92833E-02 weta=5.45445E-05 + muz=1.36047E+02 dl=1.85988E-001 dw=4.32366E-001 + u0=1.93813E-01 lu0=6.02231E-02 wu0=-4.90734E-02 + u1=8.52399E-03 lu1=2.60545E-02 wu1=-6.34371E-03 + x2mz=7.96258E+00 lx2mz=-2.15761E+00 wx2mz=2.30663E+00 + x2e=4.37912E-04 lx2e=-1.60046E-03 wx2e=-3.86750E-04 + x3e=-3.52725E-04 lx3e=-4.09096E-04 wx3e=-2.53471E-03 + x2u0=1.18873E-02 lx2u0=-4.81760E-03 wx2u0=8.80040E-03 + x2u1=2.26591E-03 lx2u1=7.96828E-04 wx2u1=-4.70527E-04 + mus=1.44421E+02 lmus=1.63665E+01 wmus=-7.31189E-01 + x2ms=8.18970E+00 lx2ms=-1.25158E+00 wx2ms=3.62233E+00 + x3ms=7.29640E-01 lx3ms=1.15206E+00 wx3ms=1.02833E+00 + x3u1=-3.51521E-03 lx3u1=-3.12374E-03 wx3u1=3.48134E-03 + tox=9.60000E-003 temp=2.70000E+01 vdd=3.30000E+00 + cgdo=5.01753E-010 cgso=5.01753E-010 cgbo=4.14187E-010 + xpart=1.00000E+000 + n0=1.00000E+000 ln0=0.00000E+000 wn0=0.00000E+000 + nb=0.00000E+000 lnb=0.00000E+000 wnb=0.00000E+000 + nd=0.00000E+000 lnd=0.00000E+000 wnd=0.00000E+000 + rsh=2.1 cj=9.34e-04 cjsw=2.41e-10 js=1e-08 pb=0.90 + pbsw=0.90 mj=0.491 mjsw=0.222 wdf=0 dell=0 * End of Edulib.ftr ..END