Blue Screen of Death (BSOD) Q&A

 

Note: This problem is more or less gone since it only affected an old type of motherboards.

Q: Why do I get a “Blue screen” I run the programs from Tolvan Data?

A: This is a known problem that occurs on some computers, it seems like the common factor is the following combination:

-Windows 98 or Me

-Some, but not all VIA motherboard chipsets

-Fast CPU’s, 650MHz+

-Possibly a Sound Blaster Live! sound card

-A floatting point exception (e.g. triggered by a division by zero in the programs)

Q: Is it only the programs from Tolvan Data that are affected?

A: No. However, it seems that most other programs do not make frequent use FPU exceptions, and thus there are only a few programs that are affected. The programs from Tolvan Data make extensive use of FPU exceptions and it is simply too much work to eliminate all places where they are used. Also, eliminating them would lead to poorer performance. And, really, the problem is not in the programs, as far I can see, but rather in the hardware combination. Unfortunately, neither of the manufacturers has released a patch that eliminates the problem to my knowledge.

Q: Is there any solution?

A: No software patch, as I know of. You must either change the motherboard in the computer, upgrade to Windows 2000, or change the sound card. If I hear of a solution I will post it on this page. We can only hope for either the motherboard manufacturers, Creative labs, or Microsoft to release a patch.

If you happen to have a Soundblaster Live! sound card, try to disable it in device manager or remove it from the computer. There have been quite a number of reports on the net about problems with the SBLive! - VIA combination.

If you find a solution, please e-mail me.

Q: Where can I read more?

A: Have a look in the newsgroups on the web. Go to for example google: http://groups.google.com/ and search for

VIA FPU exception blue screen

...or

VIA SBLive!

One particular post by Stefan Hoffmeister pretty much concludes the bottom line that the community has arrived at:

http://groups.google.com/groups?selm=qgqigtkbbo2ki4doahj3ds8gc9217qnk0c%404ax.com

A test program is downloadable from Econos at http://www.econos.de/fpu

 

Svante Granqvist

Tolvan Data