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Processor recognition

Processor recognition

Processor recognition

Using which function(s) can I recognise the processor used on a 80x86 machine? (8086, 80186, 80286, 80386, 80486, 80586, 80686).

Bert Vingerhoets
Don't worry what people think about you. They're too busy wondering what you think about them.

RE: Processor recognition

For Pre-Pentium processors and most 486 chips, there is no function call to ID the type of chip.  However, there many routines developed to do this.  A good source for this is in Dr. Dobb's Journal archived articles at www.ddj.com, you'll have to do a search for CPU Identification and it's in an undocumented corner from SEP 96.

RE: Processor recognition


After pentium,  All CPUs support cpuid instruction to recognize the CPU, CPU vendor, Family , Model, Stepping,  and CPU features. See the documentation of CPUID instruction.


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