3-113
INSTRUCTION SET REFERENCE
CPUIDCPU Identification (Continued)
Refer to AP-485, Intel Processor Identification and the CPUID Instruction (Order Number
241618), the Intel Pentium
®
Pro Processor Specification Update (Order Number 242689), and
the Intel Pentium
®
Processor Specification Update (Order Number 242480) for more informa-
tion on identifying earlier Intel Architecture processors.
The available processor types are given in Table 3-7. Intel releases information on stepping IDs
as needed.
* Not applicable to Intel386 and Intel486 processors.
Table 3-7. Processor Type Field
Type
Encoding
Original OEM Processor
00B
Intel OverDrive
®
Processor
01B
Dual processor
*
10B
Intel reserved.
11B
