Hi, ive got an Question about how to manipulate CPUID

the source to detect mmx is :

bool isMMXSupported()
int fSupported;
mov eax,1 // CPUID level 1
cpuid // EDX = feature flag
and edx,0x800000 // test bit 23 of feature flag
mov fSupported,edx // != 0 if MMX is supported
if (fSupported != 0)
return true;
return false;

And now my Question: How can I manipulate CPUID to
be MMX bit = 0 ?

Any help would be appreciated ...

Thanks in Advance.
Posted on 2001-09-08 06:07:44 by Mad-Marty
You don't :]. I don't know of any way to fiddle with CPUID... your
best, if you're dealing with a single app, would be to track down the
CPUID call and fiddle with the actual code.
Posted on 2001-09-08 07:32:15 by f0dder