Implementaion of Paging in Protected Mode Os

i am developing a protected mode OS as a part of my project. i am currently doing paging...

the whole program is relocated at a virtual addr of 0xc0000000 and loads into physical memory at 0x100000.
the problem is that whenever keyboard interrupt occurs on pressing a key the system resets..

i 've initialized PIC,keyboard,timer,IDT,GDT
uptill now and were working fine without paging...

Please help....
anoop_cet_csAsked:
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sunnycoderConnect With a Mentor Commented:
Hi anoop_cet_cs,

check if your paging maps all programs to system boot code

Sunnycoder
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KavarConnect With a Mentor Commented:
sounds like your not using remappable addresses...

something in your code is not translating an address correctly

lets say you were doing something like

eax=$400000
add eax,0c*100
jmp eax

unless you've done something to update eax base location, the function will only work in the spot its loaded in...

I know this is over simplified, but it does sound to me like you have a non-relative reference somewhere
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