Run time error

After running an executable file , the following run time error was discovered:

  Runtime error from program:c:\progra~1\salfor~1\ftn95\dmilp7.exe

Unknown floating point exception b0a1 Floating point co-processor fault at address 0040e138

0040dfa0 SFREQ [+0198] 0040aae0 COS1 [+00ff] 0040b1e0 FIR1D [+0a62] 0040c6b0 FIR [+012b] 00401000 MAIN# [+0547] eax=00000000 ebx=03dbfa94 ecx=03dbf9b4 edx=03dbf938 esi=03dbf9b4 edi=03dbf9b4 ebp=03dbf960 esp=03dbf910 IOPL=0 ds=0187 es=0187 fs=0d2f gs=0000 cs=017f ss=0187 flgs=00010247 [CA EP ZR SN DN NV]

0040e138 fdiv [ebp-0x14] 0040e13b fstp [ebp-0x10] 0040e13e wait

Please clarify what does the message means and how to go about it resolving it.

Thanks

Supramaniam

Run the program using the debugger to find the line at which the program fails then modify the Fortran code until the problem is resolved.

I have noted your comment. Question is how do I go about running it with the debugger and the procedures.

Please advise.

Supramaniam

I have used the following command dreal, checkmate, debug, undef to recompile the dmilp7.f file

and found that the equation cp6= cp1cp2cp3*cp4)/cp5 (under the subroutine SFREQ) has resulted in a floating point co-processor fault.

To elaborate the following is the error messages:

Runtime error from program:c:\progra~1\salfor~1\ftn95\dmilp7.exe

Unknown floating point exception a8a1 Floating point co-processor fault at address 00420e2e in file dmilp7.f at line 4841

SFREQ - in file dmilp7.f at line 4841 [+037e] COS1 - in file dmilp7.f at line 3980 [+03d9] FIR1D - in file dmilp7.f at line 4247 [+11d2] FIR - in file dmilp7.f at line 4428 [+01cc] main - in file dmilp7.f at line 54 [+07e7] eax=041ff6a8 ebx=041ff760 ecx=041ff760 edx=00000004 esi=041ff6e8 edi=041ff760 ebp=041ff6d0 esp=041ff640 IOPL=0 ds=0187 es=0187 fs=575f gs=0000 cs=017f ss=0187 flgs=00010203 [CA OP NZ SN DN NV]

00420e2e fdivrp st(1),st(0) 00420e30 dfstp [ebp-0x38] 00420e33 wait

Question is how I do I correct the error. Is this the way to do debugging!

Please advise.

Supramaniam