Andrew Beckett
Senior Fellow
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Life, don't talk to me about Life...
Posts: 1742
Bracknell, UK
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I don't know what the problem you've got with the internal error is - I've not seen that. You probably should contact Cadence Customer Support. That said, I'd first try it with a current version of the simulator (IUS82).
If using spectre, you should use MMSIM even if you're using IC5141. spectre was included with the IC releases up to and including IC5141, but has now been split into a separate stream (it's in the MMSIM stream with Ultrasim and nowadays APS too). Since then there have been several multi-mode simulator releases: MMSIM60, MMSIM61, MMSIM62, MMSIM70, and MMSIM71. These are just updates, enhancements, and new technology. The version in IC5141 has had none of these improvements - a few critical bug fixes, but very little recently. In IC releases after IC5141 (e.g. ICOA5251 and IC61X) spectre is no longer included so you absolutely must use an MMSIM release if you want to do spectre (or Ultrasim, or APS).
If doing mixed signal simulation, you've always needed an IUS release (or LDV before it got renamed to IUS). That is still the case - the mixed-signal simulator augments the Incisive digital simulators, which is why it makes sense to package it with IUS. If doing mixed signal simulation, you don't need MMSIM - everything is contained within the IUS strea,.
Best Regards,
Andrew.
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