MOPAC on PC's

From: David Close <R29CLOSE (+ at +) ETSU.EAST-TENN-ST.EDU>
Organization: East Tennessee State University
Subject: MOPAC on PC's
Date: Tue, 29 Nov 1994 14:38:11 -0500 (EST)

   Dear Netters:
   I would like to know if others have had success with MOPAC or AMPAC
 on a PC.  I am trying to use Ivar Koppel's MOPAC 7.1 on my Gateway
 Pentium (P5-66).  Ivar sent me the FORTRAN code which I compiled using
 Microsoft's Powerstation 32-bit compiler.  The program executes, but
 gives results that differ from some of the popular tests examples.
   I need to know if others have had similar problems.  Some users have
 mentioned the use of compilers from Microway or Leahey.  I am wondering
 if this is important.  Also it would help to know if Ivar's program has
 given reliable results in other situations.  Then there is this Pentium
 division error that everyone is discussing.  Can this influence MO
 calculations?
   Regards,  Dave Close.