How to identify what is my processor "Bits" programmatically.

[mmanaskant]

I have an Intel 64 bit processor but i have installed a 32 bit Operating system on it.

How should i find it out what "bits" my processor support? Windows API GetSystemInfor is unable to give me right results.

Thanks in advance

[Thomas_W_Intel]

You can use the cpuid instruction and check bit 29 in the EDX register for the Extended Feature Bits (Function 80000001h). See section 3.2.2 in Application Note 485 (http://download.intel.com/design/processor/applnots/24161832.pdf).

However, I do not see how this is related to Threading ;)

Best regards

Thomas