49 XSPICE, extended version of Spice

(from Jeff Murray <jm67@hydra.gatech.edu>)

I am one of the developers of XSPICE, and at the risk of being deluged with requests for specific information on the tools, I can volunteer to answer at least some questions. Currently there is no ftp site for information; if there were, this posting would likely be unnecessary. However, we are prohibited from posting even the User's Manual due to technology export restrictions.

The following is a copy of the original press release on XSPICE. If anyone would like additional clarification beyond this, or if some aspects of the release are unclear, we can certainly take this as an opportunity to remedy the situation. Please note that at the current time there are many dozens of individuals who have obtained a copy of the tools; if they have any comments or observations to make, I'm sure they would be most welcome to other members of the user community.

 		XSPICE Press Release
 		  January 2, 1993
   	 Georgia Tech Research Corporation
XSPICE provides a rich set of predefined code models in addition to the standard discrete device models available in SPICE. The XSPICE code model library contains over 40 new functional blocks including summers, multipliers, integrators, magnetics models, limiters, S-domain transfer functions, digital gates, digital storage elements, and a generalized digital state-machine.

Digital functions are simulated in XSPICE through an embedded event-driven algorithm added to the SPICE core. This algorithm is coordinated with the analog simulation algorithm to provide fast and accurate simulation of mixed-signal circuits and systems. The event-driven algorithm supports a new "User-Defined Node" capability allowing additional event-driven data types to be defined and used. XSPICE comes with a 12-state digital data type as well as a user-defined node library that includes 'real' and 'integer' types useful in simulating sampled-data systems such as Digital Signal Processing algorithms.

XSPICE is currently available for UNIX workstations and is supplied in source code form allowing users to customize and extend the simulator and models to particular needs. To date, the simulator has been successfully compiled and used on HP Apollo and Sun workstations. The XSPICE simulator and User's Manual are available with a cost-free license arrangement from the Georgia Tech Research Corporation for a distribution charge of US $200 (including first class postage within the U.S.A.; an additional US $25 is required for overseas delivery by air). For further information, please contact the Office of Technology Licensing, Georgia Tech Research Corporation, Georgia Institute of Technology, 400 Tenth Street, Atlanta, GA 30332-0415, USA, or phone (404) 894-6287 (voice) or (404) 894-9728 (FAX). Internet users may send email to XSPICE@GTRI.GATECH.EDU to obtain copies of the order form and license agreement (please include the word "license" in the subject header when mailing to this address).

This document was translated by ms2html v1.7 on 16.01.97. OMN

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