Messages in this thread | | | From | Keith Owens <> | Subject | Re: Kernel for P-II on P-I. | Date | Fri, 07 Jul 2000 11:59:19 +1000 |
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On Thu, 6 Jul 2000 10:34:47 +0200 (MEST), R.E.Wolff@BitWizard.nl (Rogier Wolff) wrote: >A kernel compiled for P-II (or something like that) crashes without >saying a thing on P-I. would it be an idea to print a message? >("This kernel is incompatible with this processor")
AFAIK that is caused by gcc using instructions that exist on P-II but not P-I, including instructions like conditional move (CMOVE). Unfortunately those instructions are used everywhere, including in printk. No way to get a message out without detecting the problem in the real mode boot loader and using BIOS I/O.
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