Honestly? really low. Usually that kind of things begin revise prior the production phase, while the engineer still have access/use of some In-Target Probe (ITP).
Right now with only some IDA/FASM/HEX assembler/disassembler and w/o any "remainder" and/or offical documentation and low-level hardware register access software ( board is running on Vista x64 )
pin down such physical value location will be like win the big prize in US national lottery :P
I will try ask around, and see if something can be done.
Forgoto to:
EDIT!
Wooh I won the lottery! :P
PCI space i920 Generic processor non-core 0x2C41 8086
Anyway as I told u later in the PM, I'm sorry to confirm that it is almost impossible implement such procedure call w/o taking apart the main bios rom.
Mainly, cause that code implementation will shift all the already existent code, so Im far behind for accomplish such task with the tools at mine disposal
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