SPICE problem inquiry

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Article #62

#62

From: Jim Gouge
Date: Fri, 03 Jan 1986 20:52

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Can anyone help me with a SPICE problem?

I am attempting to make SPICE runs with no options set
and the following timing-related command lines:

	vphi1 7 0 pulse(0v 5v 5ns 5ns 5ns 35ns 100ns)
	vphi2 4 0 pulse(0v 5v 55ns 5ns 5ns 35ns 100ns)
	.trans 5ns 600ns

A typical error message I get is:

	*ERROR*:  INTERNAL TIMESTEP TOO SMALL IN TRANSIENT ANALYSIS

	          TIME = 1.05560d-07; DELTA = 4.76837d-18; NUMNIT = 1098

As indicated by the TIME parameter, this is after (in this case) 105ns 
of successful operation.  Runs have been made at levels 1, 2, and 3 
with the same sort results.

Any suggestions?

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
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Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!cbosgd!ucbvax!info-vlsi
From: jgouge@MITRE-GATEWAY.ARPA (Jim Gouge)
Newsgroups: mod.vlsi
Subject: SPICE problem inquiry
Message-ID: <8601032103.AA01124@>
Date: Fri, 3-Jan-86 15:52:32 EST
Article-I.D.: .8601032103.AA01124
Posted: Fri Jan  3 15:52:32 1986
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