CPUID—CPU Identification

INSTRUCTION SET REFERENCE, A-L

Vol. 2A 3-207

 

Figure 3-8.  Feature Information Returned in the EDX Register

OM16523

PBE–Pend. Brk. EN.

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

EDX

TM–Therm. Monitor
HTT–Multi-threading
SS–Self Snoop
SSE2–SSE2 Extensions
SSE–SSE Extensions
FXSR–FXSAVE/FXRSTOR
MMX–MMX Technology
ACPI–Thermal Monitor and Clock Ctrl
DS–Debug Store
CLFSH–CLFLUSH instruction
PSN–Processor Serial Number
PSE-36 – Page Size Extension
PAT–Page Attribute Table
CMOV–Conditional Move/Compare Instruction
MCA–Machine Check Architecture
PGE–PTE Global Bit
MTRR–Memory Type Range Registers
SEP–SYSENTER and SYSEXIT
APIC–APIC on Chip
CX8–CMPXCHG8B Inst.
MCE–Machine Check Exception
PAE–Physical Address Extensions
MSR–RDMSR and WRMSR Support
TSC–Time Stamp Counter
PSE–Page Size Extensions

DE–Debugging Extensions
VME–Virtual-8086 Mode Enhancement
FPU–x87 FPU on Chip

Reserved