One of the many delicacies of LinuxBIOS is that it enters protected mode (32bit mode) after only 17(!) CPU instructions.
Ok, were is it done in LB is entering protected mode a standard procedur of LB.
I.e. the GX1 have to set bit 0 on CR0 to 1
that file does something on register cr0, but for the GX1 in cr0 is nothing about fpu?!
I would assume it is there anyways, or the FPU is always enabled for the GX1?
Maybe, I have to read the datasheet for FPU
can anybody explain this in easy words ;) which bits are set in that case.
in easy words: none. bit 2 is cleared though.
Thanks for the leson ;)
Ok, for the GX1 the EM is set to 0; Emulate Processor Extension, if EM = 1 all flaoting point instructions causes a DNA fault 7
Seems that the FPU is always enabled.
chris
Stefan