how detect if the intel CPU has EIST support ... ?

[bingo]

I'm looking for a way to detect if the CPU has EIST support .

EIST = Enhanced Intel SpeedStep® technology

http://www.intel.com/design/xeon/applnots/24161827.pdf

#define EIST_FLAG 0x0080


check_EIST:
mov eax, dword ptr _features_ecx
and eax, EIST_FLAG ; check for Enhanced SpeedStep Technology
jz check_TM2
mov dx, offset eist_msg
mov ah, 9h
int 21h

[sec]

Code: Select all

#EIST_FLAG = $0080 
_features_ecx.l =0 
!mov eax, 1
!cpuid
!mov [v__features_ecx], ecx
_features_ecx & #EIST_FLAG
Debug _features_ecx

Don't test by myself

[bingo]

thanks

Debug _features_ecx = 128 ; EIST support ! (else = 0)