Datasheet
Processor Uncore Configuration Registers
244 Datasheet, Volume 2
4.10.9 MC_CHANNEL_0_RANK_PRESENT
MC_CHANNEL_1_RANK_PRESENT
This register provides the rank present vector.
Device: 4, 5
Function: 0
Offset: 7Ch
Access as a DWord
Bit Attr Default Description
31:8 RO 0 Reserved
7:0 RW 0
RANK_PRESENT
Vector that represents the ranks that are present. Each bit represents a
logical rank. When two or fewer DIMMs are present, [3:0] represents the
four possible ranks in DIMM0 and [7:4] represents the ranks that are
possible in DIMM1. When three DIMMs are present, then the following
applies:
[1:0] represents ranks 1:0 in Slot 0
[3:2] represents ranks 3:2 in Slot 1
[5:4] represents ranks 5:4 in Slot 2
[7:6] represents ranks 7:6 in Slot 3