I can't get SMBIOS information from /dev/mem on Solaris10!

Hello,
According to the DMTF spec DSP0134, I should be able to find the SMBIOS structure in between physical memory address range 0x000F0000 and 0x000FFFFF.
I wrote a userspace program that looks for the Anchor string using /dev/mem, and it works fine in Linux on several machines, but not Solaris 10 on x86.
I am running Solaris 10 on a Sunfire 40z x86_64 machine.
Is this machine SMBIOS compliant? Or is there a discrepancy in the way Linux exports memory addresses in /dev/mem vs that of Solaris?
Thanks in advance!

Basically, I am trying to access PCI config space registers from userspace without writing a device driver.
Ideally, it would use /dev/mem for all operations, thus making it 100% userspace and OS independant (granted, as long as /dev/mem is supported appropriately on the OS), which is much more portable than a device driver.
Under Linux, a device driver is not needed to set/extract these values. As a matter of fact, using /dev/mem is not even necessary. But I am starting to think that the only way under Solaris is to write a device driver!!
Please let me know I am just going about it all wrong, and all I have to do is ______.
Or, if /dev/mem is supposed to work fine under Solaris in this way, then perhaps this particular machine is just not SMBios compliant.
I'll try testing for that case under Linux tomorrow.

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