Yousuf Khan said:
The earlier 6x86 processor was missing the CPUID instruction which was
introduced with the Pentium MMX and K6 processors, but that was added
with the 6x86MX processor.
I have some Intel Pentium based computers without the MMX extensions,
and some AMD K5 processors.
I know that the Pentium based computers do not have CPUID. I was just
wondering if there is anything else missing on the 6x86.
I am getting "Invalid Instruction" crashes on a Linux kernel, and I am
just trying to get an idea as to what may be wrong, before I decompile
it.
The kernel is supposed to be built for a 486 machine, so I am not
expecting CPUID instructions, but there may be a bug in the compiler.
Cheers,
Mark.