Intel 64 and IA-32 Architectures Software Developers Manual Volume 2A, Instruction Set Reference, A-M

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Vol. 2 3-187

INSTRUCTION SET REFERENCE, A-M

EAX = 80000002H:

EAX

← Processor Brand String;

EBX

← Processor Brand String, continued;

ECX

← Processor Brand String, continued;

EDX

← Processor Brand String, continued;

BREAK;

EAX = 80000003H:

EAX

← Processor Brand String, continued;

EBX

← Processor Brand String, continued;

ECX

← Processor Brand String, continued;

EDX

← Processor Brand String, continued;

BREAK;

EAX = 80000004H:

EAX

← Processor Brand String, continued;

EBX

← Processor Brand String, continued;

ECX

← Processor Brand String, continued;

EDX

← Processor Brand String, continued;

BREAK;

EAX = 80000005H:

EAX

← Reserved = 0;

EBX

← Reserved = 0;

ECX

← Reserved = 0;

EDX

← Reserved = 0;

BREAK;

EAX = 80000006H:

EAX

← Reserved = 0;

EBX

← Reserved = 0;

ECX

← Cache information;

EDX

← Reserved = 0;

BREAK;

EAX = 80000007H:

EAX

← Reserved = 0;

EBX

← Reserved = 0;

ECX

← Reserved = 0;

EDX

← Reserved = 0;

BREAK;

EAX = 80000008H:

EAX ← Reserved = 0;

EBX

← Reserved = 0;

ECX ← Reserved = 0;

EDX

← Reserved = 0;

BREAK;

DEFAULT: (* EAX = Value outside of recognized range for CPUID. *)