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This is the homepage for INSPIRE(A VHDL Simulation Environment with INcremental Analysis/Elaboration, SPecialized Functions, and Incremental Waveform REgeneration) Inspire is a set of tools that are needed to simulate VHDL descriptions. It includes as base tools a VHDL compiler, a waveform analyzer, and a VHDL source level debugger. In its Windows version, it also includes a symbol editor and a schematic editor as graphical interface for design.


Copyright (c) 1995~2002 Inspire by Kiyoung Choi, Taekyoon Ahn, LG semicon. co. Seodu Logic Ltd. and International Semiconductor Research Center, Seoul National Univ., Seoul, KOREA, All rights reserved.

It is intended that this program be used purely for academic research and not for profit. All rights to distribute or otherwise use this program for profit are reserved by the authors and supporters of this program. You may copy, distribute this program. However, any distribution of this program must include this copyright notice. This program is provided WITHOUT ANY WARRANTY. The authors or supporters will not be liable for any damages arising out of the use of this program.


IVSIM for UNIX or Linux

Inspire for Windows

Most of the documentations are included in the download files.


IVSIM Version 1.2.2 (Release date: 5th June, 2000)

IVSIM Version 1.2.0 (Release date: 7th July, 1999)

Inspire Version 0.8.0 (Release date: 19th June, 1999)


Design verification by concurrent simulation and automatic comparison
T. Ahn and K. Choi
In Proc. Midwest Symposium on Circuits and Systems (MWSCAS), pp.1087-1090, Aug. 1997.

VHDL simulation acceleration using specialized functions
T. Ahn and K. Choi
In Proc. IEEE Int'l Symposium on Circuits and Systems (ISCAS), pp. 1684-1687, June 1997.

Compression of simulation results by sampling
T. Ahn and K. Choi
In Proc. Asia Pacific Conf. on Hardware Description Languages (APCHDL), pp. 155-159, Jan. 1996.

Incremental analysis and elaboration of VHDL description
T. Ahn, K. Kim, S. Park, and K. Choi
In Proc. Asia Pacific Conf. on Hardware Description Languages (APCHDL), pp. 128-131, Jan. 1996.


  • Director: Kiyoung Choi
  • Author: Taekyoon Ahn
  • Contributors: Daehong Kim, Injo Hwang, Kisun Kim, Byoungil Jeong, Hosuk Zang, and Mary Kiemb