Author Topic: SOLVED: Thunderbird - SM email makes system trap in Warp 4.52 but ok in Arcaos5  (Read 3169 times)

mauro

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yes Lars, while it is obvious that your OS2PCAT.PSD has fixed the system trap (and thank you for the important job you did which is the only hope for people like me), I still cannot explain why the kernel failure does not happen in a linux host.

Lars

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It is possible that your version of Virtualbox for Linux emulates treatment of floating point exceptions differently, that is, the old DOS style where a floating point exception leads to generation of an interrupt which is routed via the legacy interrupt controller and leads to invocation of an interrupt routine for interrupt 13 instead of an exception routine for exception 0x10.
And this works ok with the W4 kernel.
I seem to remember that most recent versions of Virtualbox for Windows also work this way but I am not sure. In any case, with the PSD, you are on the safe side as it enforces floating point exception handling via exception 0x10.

By the way: this is the most recent version of OS2PCAT.PSD:
https://hobbesarchive.com/Home/Download?path=/Hobbes/pub/os2/system/drivers/misc/OS2PCat_6-0.wpi
« Last Edit: January 27, 2025, 10:56:16 am by Lars »