the x86 files...

(Soon) A little Athlon mystery .

(New 2000-09-14) Transmeta Crusoe extended CPUID .

(Updated 2000-06-23) Undocumented 3DNow! instructions found in K6-2.

x86 CPU identification (and bugs)

A complete description of CPU identification algorithm recognizing virtually all variations of CPUs used in PCs. This is only description - no single instruction of code, because I sold it to some company. The article contains some information that most of PC gurus either don't want or are not allowed to share. Well, to be honest, about 6% of information contained in this article originates from 4P package info file by Christian Ludloff.

Coming soon - clock measurement.

AMD K5 "secrets"

It seems that AMD docs on K5 are slightly misleading. You may have "Model 3" withour even knowing about it...

Cyrix/IBM 6x86 undocumented registers info

Cyrix/IBM 5x86/6x86 (and 486) control program - Cx86!

This tiny utility allows for setting all important control bits inside Cx 5x86, 6x86 and older 486 CPUs, making it run faster and/or crash your system :-). Designed for both normal users and hackers.

Information sources (include 4P distribution)

WWW links to sources of information on x86 family CPUs.

Windows 95 memory monitor

A small utility displays current memory usage details in dialog box AND total virtual memory usage on taskbar button. The utility is essential for convincing people that Windows95 need at least 24MB for any serious work.

The End