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Created: Tuesday, January 5 2010 13:33.31 CST

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DR6 may or may not be useful for bochs/VirtualPC detection

Author: GynvaelColdwind

# Views: 1964

This post will be similar to the previous one, and will be about small, but interesting, details of x86 architecture, that might be (and sometimes are) easily overlooked by creators of emulators and virtual machines. The hero of today's post is the DR6 debug register, or, to be more precise, the four least significant bits of this register - B0 to B3 (breakpoint condition detected flags). Please read the whole post before jumping into any conclusions :)

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