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AX = DA92h
Return:
CF clear (successful) AL = CPU stepping (see also #00529 at INT 15/AH=C9h) AH = CPU model BL = CPU family (05h = Pentium, etc.) CX = external clock speed in MHz (BCD) (0040h,0050h,0060h,0066h are possible return values on my Pentium with the Intel "Neptune" chipset) EAX high word destroyed
Note: 90 MHz and faster Pentium CPUs can be configured to run at varying multiples of the external clock speed, i.e. a typical 90 MHz Pentium system will run the motherboard at 60 MHz (my 90 MHz Pentium returns 0060h in CX)
See Also: AH=C9h
Category: Uncatagorized - Int 15h - A
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