• July 7, 2008: Updated the "CPU Identification utility" page.
  The CHKCPU utility (DOS version) is updated to version 1.15 and CHKCPU32 (Win32 version) is updated to version 2.03.
  - Expanded the CPU detection logic to include the Extended Model and Extended Family bits in the CPU-ID Signature. This change became necessary now most modern CPUs use these bits and to distinguish them from previous models with the same Base Family/Model signature.
  - Added an Extended Family digit to the CPU Signature display. Together with the Ext. Model digit and the 4-digit base Type/Family/Model/Stepping indication, this now makes the CPU Signature a 6-digit display.
  - Updated the CPU data for new AMD Opteron Single/Dual/Quad-core, Phenom X3/X4, Athlon 64 FX, Athlon 64 X2, Athlon 64 (Mobile), Turion 64 X2, Sempron (Mobile), and Intel Xeon Dual-Core, Xeon Quad-Core, Core 2 Duo (Mobile), Core 2 Quad, Pentium Dual-Core (Mobile), Celeron Dual-Core, Celeron M, Core 2 Solo, Core Duo, Core Solo, Atom, and VIA C7 models.
  - Fixed the AMD Sempron detection on Rev. F models.
  - Corrected the Hyper-Threading display on AMD Dual/Multi-core CPUs.
  - Added logic to distinguish AMD Opteron CPUs from Athlon 64 (FX) models with the same CPU-ID signature.
  - Added CPU core revision indication for all AMD K8 and K10 models.
  - Added a 'Virtualization Technology' display to the CPU Features list. Indicates if a CPU supports the Virtual Machine extensions.
  - Fixed the multiplier detection on AMD family 10h and 0Fh Rev. F (AM2) models. (CHKCPU only)

• July 2, 2008: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Corrected several broken links on the K6plus BIOS list.
  - Added a new BIOS for the DataExpert MVP 7598, GigaByte 586ATV, PCChips M570 v1.3, and TMC TI5VG+ (1Mb) to the patched BIOS list.

• August 8, 2007: Updated the "CPU Identification utility" page.
  The CHKCPU utility (DOS version) is updated to version 1.14 and CHKCPU32 (Win32 version) is updated to version 2.02.
  - Fixed the Intel Celeron M 410/420/430 detection (Yonah core).
  - Fixed the Xeon Dual-Core 3040-3070 detection (Conroe core).
  - Updated the CPU data for new AMD Athlon 64 (X2), Athlon 64 FX, Sempron, Turion 64 X2, and Intel Xeon Dual-Core, Xeon Quad-Core, Core 2 Duo (Mobile), Core 2 Quad, Celeron M, Core Solo, and Core Duo models.
  - Added support for the Intel Celeron Processor 400 Sequence.
  - Added an Extended model digit to the CPU Signature display.
  - Added an 'Execute Disable protection' display which indicates if the CPU supports the Data Execution Prevention feature. Used by WinXP SP2 and Vista.
  - Added support for displaying the L3 cache size on AMD CPUs.
  - Added an /F switch to allow output of the CPU internal frequency only. This option can be used in scripts, to allow decision making based on speed.
  - Fixed the too high speed reading on the Intel Core and Celeron M 400 series CPUs when the TSC is not used (instruction timing method). (CHKCPU only)

• June 5, 2007: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Corrected several broken links on the K6plus BIOS list.
  - Added a new BIOS for the Jetway J-542B(S), PCChips M571 v3.2(a), and M571 v7.0 to the patched BIOS list.
  - Added 2 motherboards to the list for which a patched BIOS is on the way. These are the Gigabyte 586S2, and PCChips M550.

• Februari 4, 2007: Updated the "CPU Identification utility" page.
  The CHKCPU utility (DOS version) is updated to version 1.13 and CHKCPU32 (Win32 version) is updated to version 2.01.
  - Updated the CPU data for new Intel Xeon Dual-Core, Core Duo, Pentium D, Pentium 4, Celeron D, Pentium M, and Celeron M models.
  - Added support for the Intel Core 2 Duo and Core 2 Quad.
  - Added logic to distinguish an Intel Xeon (Dual-Core) from a Core 2 Duo, Pentium D, or Pentium 4 model with the same CPUID signature.
  - Added a batch-file for easy use of the program.
  - Improved support for old UMC 486 CPUs and fixed the too high CPU speed indication on these CPUs (CHKCPU only).

• July 7, 2006: Updated the "CPU Identification utility" page.
  The CHKCPU utility (DOS version) is updated to version 1.12 and a new Win32 version (CHKCPU32 v2.00) is released as well.
  - Updated the CPU data for new AMD Athlon 64, Athlon 64 X2, Sempron, and Intel Pentium M, Celeron D, Pentium 4, Pentium D, Xeon, and VIA C3 models.
  - Added support for the Intel Core Solo/Duo and Transmeta Efficeon.
  - Enabled SSE3 display for any CPU that supports SSE2.
  - Corrected the Hyper-Threading display on Dual-Core CPUs.
  - Improved support for old Cyrix/TI CPUs like the TI486DX4 (CHKCPU only).
  - Expanded the Debug display with results from various CPU tests in case CPUID is not supported (CHKCPU only).
  - Improved the CPU speed display accuracy on modern high speed CPUs under Windows (CHKCPU32 only).
  - Added a 'Number of CPUs' display which indicates the nbr of logical cores (CHKCPU32 only).

• May 15, 2006: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added the Jetway J-542B(S) and MicroStar MS-5169 V4.0 BIOSes to the K6plus BIOS list, and corrected several broken links.
  - Added a new BIOS for the Chaintech 5RSA2 to the patched BIOS list.
  - Added 4 motherboards to the list for which a patched BIOS is on the way. These are the Biostar M5ATC, Jetway J-542B(S), PCChips M570 v1.3, and TMC TI5VG+ (1Mb).

• November 29, 2005: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added the FIC PAG-2130, RedFox AGP-ALI (2Mb), and Soltek SL-54U5 BIOSes to the K6plus BIOS list, and corrected several broken links.
  - Added 3 new BIOSes to the patched BIOS list. These BIOSes are for the Elitegroup P5VP-A+, Iwill P55XB2, and PCPartner VIB878DS with SMC I/O chip.
  - Added 3 motherboards to the list for which a patched BIOS is on the way. These are the Acorp 5TX29, Asus TX97-XV, and DataExpert MVP 7598.
  - Updated the coming patched BIOSes for the Elitegroup P5SD-B and Superpower SP-586TB.

• July 7, 2005: Updated the "CPU Identification utility" page.
  The CHKCPU utility is updated to version 1.11.
  - Updated the CPU data for new AMD Opteron, Athlon 64 (FX), Sempron, Turion, Intel Pentium M, Pentium 4, and Celeron D models.
  - Added support for the Dual-Core AMD Opteron, Athlon 64 X2, and Intel Pentium D CPUs.
  - Fixed a bug in the Hyper-Threading display.
  - Added Hyper-Threading and SSE3 display for the Athlon 64.
  - Added 64-bit support display for AMD Opteron, Athlon 64 (FX), Sempron, Turion, and Intel Celeron D, Pentium 4, and Pentium D CPUs.

• February 6, 2005: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added the MicroStar MS-5191, Soyo 5SSM, and TCM TI5VGF BIOSes to the K6plus BIOS list, and corrected several broken links.
  - Added 6 new BIOSes to the patched BIOS list! These BIOSes are for the Asus SP98AGP-X with on-board sound, BCM IN5598, Biostar M5SAF, Elitegroup P5SS-Me, and Tekram P5T30-B4E and P5VP3-B3.
  - Updated the Tyan S1571/S1573 BIOS for IDE harddisk support upto 128GB.
  - Added 2 motherboards to the list for which a patched BIOS is on the way. These are the J-Bond PCI500C-Pa, and TCM AI5VG+ (1Mb).

• October 10, 2004: Updated the "CPU Identification utility" page.
  The CHKCPU utility is updated to version 1.10.
  - Updated the CPU data for new AMD Opteron, Athlon 64 (FX), Athlon XP, Duron, Sempron, Intel Celeron, PentiumIII, Pentium M, Pentium 4, Celeron D, Xeon, and VIA C3 models.
  - Added Clock multiplier support for the AMD Opteron, Athlon 64 (FX), Intel Pentium M, Celeron M, and VIA C3 Nehemiah core.
  - Fixed the incorrect CPU features display on newer Pentium 4 models.
  - Added CPU features display for SSE2, SSE3, and Hyper-Threading.
  - Changed the Debug mode display to only show CPUID levels relevant for the detected CPU.

• September 6, 2004: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added the Amptron PM-599LMR and Biostar M5ALC BIOSes to the K6plus BIOS list, and corrected several broken links.
  - Added 3 new BIOSes to the patched BIOS list! These BIOSes are for the Asus VX97, Biostar M5ATD, and RedFox AGP-ALI.
  - Updated the PCPartner/Vtech VIB823DS BIOS for IDE harddisk support upto 128GB.
  - Added 12 motherboards to the list for which a patched BIOS is on the way. These are the Abit IT5H v2.0, Asus SP98AGP-X with on-board sound, Azza PT-5VML, Biostar M5SIB v2.0, Elitegroup P5SS-Me, PCChips M571 v3.2(a), PCChips M571 v7.0, QDI Titanium IIIB, Shuttle HOT-569A, Shuttle HOT-571, SuperMicro P5MMS98/P5MMS2, and Tyan S1592.

• March 10, 2004: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added 3 new BIOSes to the patched BIOS list! These BIOSes are for the Amptron PM-9100C, Asus SP98AGP-X, and Chaintech 5RSA0.
  - Updated the PCChips M590 BIOS to fix the USB ports problem of the 990625S(J) BIOS.
  - Added 3 motherboards to the list for which a patched BIOS is on the way. These are the Asus VX97, Biostar M5ATD, and Chaintech 5RSA2.

• December 22, 2003: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added the Biostar M5SAA BIOS to the K6plus BIOS list
  - Added 5 new BIOSes to the patched BIOS list! These BIOSes are for the Asus P/I-XP55T2P4, Asus P5S-B/P5-99B, Asus TXP4-X, DFI 586IPVG, and QDI Titanium IB+.
  - Updated the Gainward 5VPA BIOS for IDE harddisk support upto 128GB.
  - Added 3 motherboards to the list for which a patched BIOS is on the way. These are the Chaintech 5RSA0, RedFox AGP-ALI, and Tekram P5T30-B4.

• August 19, 2003: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added the Acorp 5ALI61 (1Mbit and 2Mbit) BIOSes to the K6plus BIOS list
  - Added 5 new BIOSes to the patched BIOS list! These BIOSes are for the Aopen AP5T, Asus SP98-N, Chaintech 5SIM, and Tekram P5M4-B and P5M4-M.
  - Added 2 motherboards to the list for which a patched BIOS is on the way. These are the QDI Titanium IB+ and IIB.

• July 16, 2003: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added 5 new BIOSes to the patched BIOS list! These BIOSes are for the Jetway J-542C/542CS, PCChips M575, Tekram P5M4-M+, Trigem Delhi-III, and Vision Top S7-MVP3.
  - Added 5 motherboards to the list for which a patched BIOS is on the way. These are the Abit AX5/PX5, Asus SP98AGP-X, Asus SP98-N, Chaintech 5SIM, and Gainward 5S3A.

• April 19, 2003: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added the Jetway 530BF BIOS to the K6plus BIOS list
  - Added 3 new BIOSes to the patched BIOS list! These BIOSes are for the Chaintech 5IFM0, Gigabyte 5SG-100, and Lucky Star 5VP3.
  - Added 4 motherboards to the list for which a patched BIOS is on the way. These are the Asus P/I-P55TVP4, DFI 586IPVG, Tekram P5MVP-A4 (1Mb), and Trigem Delhi-III.

• February 19, 2003: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added 3 new BIOSes to the K6plus BIOS list (Atrend, PCPartner/VTech, Soyo)
  - Added 2 new BIOSes to the patched BIOS list! These BIOSes are for the Asus P5S-VM/P5-99VM and Elitegroup P5SD-B+.
  - Updated 3 patched BIOSes for IDE harddisk support upto 128GB! These are for the AOpen AX5T, Asus TX97, and EFA P5MVP3-AT.
  - Added 5 motherboards to the list for which a patched BIOS is on the way. These are the Asus P5S-B/P5-99B, Chaintech 5IFM0, Chicony MP983 (laptop), Gigabyte 5SG-100, and Microstar MS-5172.

• January 2, 2003: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Corrected several broken links in the K6plus BIOS list (FIC, Epox)
  - Added 11 new BIOSes to the patched BIOS list! These BIOSes are for the Asus TX97-L, TX97-LE, and TX97-X, Lucky Tech P5MVP4, PCChips M572 and M590, PCPartner/Vtech VIB823DS-LGS and VIB878DS-ITE, Shuttle HOT-603, Tekram P5M3-A+, and TCM TI5VG+.
  - Updated 3 patched BIOSes for IDE harddisk support upto 128GB! These are for the Amptron PM9900/PCChips M577, Shuttle HOT-569, and Tekram P5MVP-A4(2Mb)/-B4.
  - Added 5 motherboards to the list for which a patched BIOS is on the way. These are the Asus TXP4-X, Lucky Star 5VP3, Superpower SP-586TB, Tekram P5M4-B, and Vision Top S7-MVP3.

• November 12, 2002: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Updated the K6plus BIOS list and made the PCChips M599LMR BIOS available for download from my site
  - Added a patched BIOS for the AOpen AP5T and AX5T.

• October 10, 2002: Updated the "CPU Identification utility" page.
  The CHKCPU utility is updated to version 1.9.
  - Updated the CPU data for new AMD Athlon, Duron, Intel Celeron, PentiumIII, Pentium 4, Celeron 4, and VIA C3 models.
  - Fixed the incorrect multiplier indication on newer Pentium 4 and Athlon CPUs.
  - Added a CPU-ID Name string display. If the CPU supports it, this function displays the CPU Name or Brand string as stored in the CPU.

• September 10, 2002: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Updated the K6plus BIOS list and made the PCChips M585LMR, M598, and M598LMR BIOSes available for download from my site
  - Added a patched BIOS for the Asus SP97-XV and updated the Asus TX97-E patch. Both these (version J.2) BIOSes have full K6plus support, and have IDE harddisk support upto 128GB!

• July 7, 2002: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added a patched K6+ BIOS for the Gainward 5VPA and updated the Asus TXP4 patch for IDE harddisk support upto 128GB!

• June 14, 2002: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added a patched BIOS for the Asus SP97-V and updated the TX97-XE patch. These version J.2 BIOSes have full K6plus support, and have a fix for the 32GB IDE harddisk limit to support drives upto 128GB!

• May 13, 2002: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added a patched BIOS for the Asus T2P4S. Apart from K6plus support, this patched BIOS has also better support for the original K6-2CXT/III and has a fix for the 32GB IDE harddisk limit to support drives upto 128GB!

• May 6, 2002: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added a patched BIOS for the TCM AI5VG+
  - Updated the patched Asus T2P4 BIOS to version J.2. This new patch adds a fix for the 32GB IDE harddisk limit and supports now drives upto 128GB!

• April 11, 2002: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Updated the K6plus BIOS list
  - Added a patched BIOS for the Asus TX97-XE and the Chaintech 5IFM1.

• Februari 5, 2002: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Updated the K6plus BIOS list and added a beta BIOS for the Tyan S1598
  - Added a patched BIOS for the Asus TX97 and TXP4, and the Shuttle HOT-569.

• October 26, 2001: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Updated the K6plus BIOS list
  - Added a patched BIOS for the EFA P5MVP3-AT (Viking 3) and the Tekram P5MVP-A4(2Mb)/-B4.

• September 4, 2001: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added several new K6plus aware BIOSes to the list
  - Added a patched BIOS for the Asus P/I-P55T2P4 and the Tyan S1571/S1573.

• July 7, 2001: Updated the "CPU Identification utility" page.
  The CHKCPU utility is updated to version 1.8.
  - Updated the CPU data for new AMD K6-III+, Athlon, Duron, Intel Celeron, PentiumIII, and VIA models.
  - Added support for the Pentium 4 and for Transmeta CPUs.
  - Added Clock multiplier support for the AMD Athlon, Duron, and VIA Cyrix III.
  - Fixed a bug that caused floppy or sound problems or crashed Windows on PCs which use a specific Intel I/O chip and a Celeron/PentiumII/III CPU. This bug affected the Compaq Armada laptop series and several Dell laptop and desktop models.

• July 5, 2001: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added several new K6plus aware BIOSes to the list
  - Added a patched BIOS for the PCChips M577 / Amptron PM9900.
  - Added a Tyan S1590 and the AMD K6-III+ article by Michael McCarrick. The findings presented here will work on most other boards as well.

• May 22, 2001: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  I finally found some time to update this page! :-)
  - Added a long list of K6plus aware BIOSes
  - Added a patched BIOS for the Asus TX97-E.

• January 19, 2001: Updated The Unofficial AMD K6-2+ / K6-III+ page.
  - Added information on CPU Core voltage and FSB frequency requirments.
  - Added a patched BIOS for the Shuttle HOT-591P.

• November 9, 2000: Added The Unofficial AMD K6-2+ / K6-III+ page.
  A page dedicated to K6-2+ / K6-III+ support for Super Socket 7 boards. This page is still under construction, but you can download a K6-2+/III+ enabled BIOS for the Tyan S1590 motherboard.

• August 8, 2000: Updated the "CPU Identification utility" page.
  The CHKCPU utility is updated to version 1.7.
  - Updated the CPU data for new AMD K6-2+/III+, Athlon-E, Intel Celeron and PentiumIII-E models, and added support for the AMD Duron and VIA/Cyrix III.
  - Rewritten the Internal speed detection routine to improve the accuracy of the speed indication under Windows NT/2000.
  - Added a separate Clock multiplier display.
  - If the Clock multiplier value is know, CHKCPU will display the Bus clock speed as well.

• July 10, 2000: Updated the "The Windows 95 Partition Bug" page.
  The BIOS Int 13h extensions detection utility EXTBIOS is updated to version 1.3.
  - Added support for Command line switches. You can get a list with EXTBIOS /?
  - Made the program output clearer by indicating which subset is responsible for breaking the 8 GB barrier, and by moving the more intricate details to the Verbose ( /V) mode.

• July 3, 2000: Updated the "Move Windows 95/98 to a new harddisk" page.

• March 3, 2000: Updated the "CPU Identification utility" page.
  The CHKCPU utility is updated to version 1.6.
  - Updated the CPU data for new AMD K6-2, AMD Athlon, and Intel Celeron models, and added support for the Intel PentiumIII-E (Coppermine).
  - Fixed the 45% too low speed reading on the AMD Athlon when the TSC is not used. (instruction timing method).
  - Increased the accuracy of the CPU speed measurement for fast CPUs, like the AMD K6-2/III, Athlon, and Intel Celeron/PentiumII/III(-E).
  - Rewritten the basic CPU detection algorithm for better detection of NexGen, Cyrix, and IDT CPUs. This algorithm works also in Virtual and Protected mode.
  - Added support for 386 and (non-Cyrix) 486 CPUs which do not know the CPUID instruction. CHKCPU will no longer abort with an error on these CPUs.
  - Fixed a bug that crashed CHKCPU in Real mode on a Nx586, and fixed the L1 cache mode detection on this CPU.

• Sept. 15, 1999: Updated the "CPU Identification utility" page.
  The CHKCPU utility is updated to version 1.5.
  - Updated the CPU data for new AMD K6-2, Intel Celeron, PentiumIII, and IDT Winchip steppings, and added the AMD Athlon (K7).
  - Fixed a bug where an IDT CPU was displayed as an "IDT Rise -Unknown model-".
  - Added support for Command line switches. You can get a list with CHKCPU /?
  - An Intel Celeron CPU is now indicated as such. CHKCPU v1.5 is able to differentiate between a PentiumII and a Celeron with the same signature.
  - Added display of various CPU features. (Verbose mode only)
  - Added display of the L1 cache size. (Verbose mode only)

• July 9, 1999: Updated the "AMD 5x86 - 133 CPU Upgrade Info" page.
  - Added links to two additional Am5x86-133 upgrade kit vendors.
  - Added a multimeter procedure to locate the clock-multiplier jumper.
  - Added chipsets to the L1 cache WB support list.
  - Added info on how to test the CPU/Chipset L1 cache WB interface.

• June 9, 1999: Updated the "The BIOS IDE Harddisk Limitations" page.
  - The BIOS limitations article is updated. Added info about the 1994/95 Award BIOS 2 GB harddisk size display limit bug, and expanded the part about breaking the 8 GB barrier.
  - The BIOS Int 13h extensions detection utility is updated and is now at version 1.2.

• Apr. 6, 1999: Updated the "CPU Identification utility" page.
  The CHKCPU utility is updated to version 1.4.
  - Updated the CPU data (K6-III and PentiumIII) and added support for the Rise mP6 CPU.
  - Added display of the amount of integrated L2 cache on the PentiumPro/II/III, and AMD K6-III CPUs. For the Intel PentiumII an additional 'Celeron or Celeron-A type' indication is added when appropriate.
  - Rewritten the program so that it runs in (16-bit) Protected mode whenever a DOS Protected Mode Interface (DPMI) host is present. (Windows, OS/2, etc.) This improves the speed display accuracy in the DOS-box for all CPUs.
  - Added display of the Current CPU mode: Real, Virtual, or Protected.

• Feb. 27, 1999: Added Windows 98 information to the "Problems with BIOS Boot sector Virus Protection" and the "Move Windows 95/98 to a new harddisk" page.
  Updated the WD Table Check utility on the "The BIOS IDE Harddisk Limitations" page (CHKBIOS.EXE) to the latest version 2.30.
  Updated several broken links on other pages.
  

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