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Need READ Access to BIOS ROM
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The following pertains to a Windows XP Embedded system running a single C++ application with administrator privileges.
I need the application to read several bytes of data from the BIOS ROM. The data to be read will have been previously stored in the BIOS ROM at a known address when the chip was burned. I know that the BIOS chip is mapped to the upper 512K of the 4G address space (0xfff80000-0xffffffff) so all I really need is permission to read data from this area of memory without getting a C0000005 access violation. This may require an assembly language subroutine, but that is no problem.
I know this is possible because I have found two utility programs (RW-Everything and HWDIRECT) which can do memory dumps of that entire memory space.
Any and all suggestions will be appreciated.
Thanks,
Bob.
I need the application to read several bytes of data from the BIOS ROM. The data to be read will have been previously stored in the BIOS ROM at a known address when the chip was burned. I know that the BIOS chip is mapped to the upper 512K of the 4G address space (0xfff80000-0xffffffff) so all I really need is permission to read data from this area of memory without getting a C0000005 access violation. This may require an assembly language subroutine, but that is no problem.
I know this is possible because I have found two utility programs (RW-Everything and HWDIRECT) which can do memory dumps of that entire memory space.
Any and all suggestions will be appreciated.
Thanks,
Bob.
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