Appendix A Generating Serial Presence Detection Data for Down Memory Configurations
I have no data yet. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.
—Sherlock Holmes in “A Scandal in Bohemia”
This appendix provides guidance on how to create the SPD data required for motherboard designs that have the DDR3 SDRAM chips soldered directly onto the motherboard. Modular DIMMs normally have an SPD EERPOM that contains this information, which is used by the BIOS to correctly configure the system during Memory Reference Code. Without this data, the system will not boot; or at best it will try to boot with slow settings.
Since memory-down designs do not ...
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