intel / intel/SDM

[Bug]: SDM 092 CPUID typo – leaf 5

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Description

SDM 092 Vol 1 table 21-2 on pages 21-3/21-4 (441/442 of 600) in section 21.1.5 lists mutable CPUID fields.

For LARGEST_MONITOR_LINE_SIZE it shows **EDX**[15:0].

That register is incorrect.

The correct register is **EBX**[15:0].

The authoritative source is (also in SDM Vol 1, in) table 21-15 on page 21-23 (461 of 600) in section 21.3.

Contributor guide

Open the contributing guide

Research direction

Start by locating SDM Vol. 1 section 21.1.5 and table 21-2 on pages 21-3/21-4, then compare the LARGEST_MONITOR_LINE_SIZE entry with table 21-15 in section 21.3. Done means the rendered specification consistently identifies the field in EBX[15:0] and no longer reports EDX[15:0].

Written by the indexing model from the issue text.

Assessment

Domain
documentation
Issue type
Documentation
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Active
Clarity
Clearly specified
Newbie friendliness
74/100

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