PMode jumping problem

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FlashBurn

PMode jumping problem

Post by FlashBurn »

I have some test code to jump into PMode, but I get a failure(triple fault) "jump_protected: gate type 0 unsupported"! What does this mean?
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jrfritz

Re:PMode jumping problem

Post by jrfritz »

I don't know...but it sounds like something to do with the GDT or a20 gate maybe?
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FlashBurn

Re:PMode jumping problem

Post by FlashBurn »

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Re:PMode jumping problem

Post by Pype.Clicker »

Your GDT registers aren't loaded properly. ldgt will load the base address with 0, which is unlikely to be right.
Moreover, the GDT isn't even present in your bootsector ...
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FlashBurn

Re:PMode jumping problem

Post by FlashBurn »

No its in the kernel. I load 10 sectors, start with the 2nd. The first thing there is now the GDT and when this is working there will also be the IDT.
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