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Pentium® II Processors
"Runtime Error 200", "Divide Overflow", "Divide by 0" errors when running software that was compiled on a Borland TurboPascal* compiler.

A "Runtime Error 200", "Divide Overflow", or a "Divide by 0" error message that is displayed when you try to run a program may be a result of a timing loop that affects any program compiled on Borland’s TurboPascal* compiler. All versions (including version 7.0) of Borland’s TurboPascal compilers are affected by this issue. This compiler problem is dependent on the speed the processor is running, but it is not a processor issue.

When executed at speeds greater than or equal to 233 MHz, a speed-dependent timing loop in the compiled program generates a large number. The code following the timing loop then attempts to divide this large number by a smaller constant number. This division results in a quotient too large to be represented in the quotient register designated by the specific divide instruction. The program will not run, and the system displays the "Runtime Error 200" message, or a "Divide Overflow" error message.

The root cause of this problem appears to be the software libraries that come with the compiler. Any compilers that are dependent on software-based timing loops are affected, but this issue is specifically known to affect Borland’s TurboPascal compilers.

If you have a piece of software that was compiled on a Borland Turbo Pascal compiler, you will likely encounter this problem when run at speeds of 233 MHz and higher. One possible solution is to contact your software vendor to see if they have a newer version of that software that is not dependent on timing loops.

Intel is also aware of two patches for this problem, one for programs that have been compiled with a Borland TurboPascal compiler, and one that will patch the software libraries of the compiler itself.

Intel has worked with Inprise (formerly Borland), and Inprise has communicated that there is more information about this problem on the Inprise Developer Support web site.

 

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