https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235944
Ravi Pokala <rpok...@panasas.com> changed:
What |Removed |Added
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CC| |rpok...@panasas.com
--- Comment #3 from Ravi Pokala <rpok...@panasas.com> ---
> (interestingly, Thaiphoon Burner on Windows finds different SMBus addresses
> for the SPD EEPROMs: 0x52 and 0x53)
SMBus uses the low-order bit to denote read or write. It looks like Windows
uses 7-bit addressing, where the read/write bit is simply omitted. FreeBSD uses
8-bit SMBus addresses, which are always passed around with the read/write bit
cleared. Thus, 7-bit addresses 0x52 and 0x53 become 8-bit addresses 0xa4 and
0xa6.
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