V1.1: Data Prefetch, Multiplier fixes, etc.

What's new?

• Changed parameter usage help parameter to /?
• Fixed Set Multiplier not working at all
• Fixed unsupported Multiplier settings not being rejected
• Fixed Multiplier 6.5x not being rejected
• Set Multiplier now gets blocked on non-PLUS CPUs
• Added feature to enable/disable Data Prefetch
• Program now detects Windows and refuses to run on it
• Improved error handling for PCI/AGP BAR scanning
• Added feature to list all PCI/AGP BARs

v1.07: Fixes and Windows detection

Fixes:

• The program now prevents itself from operating under Windows
• Fixed a crash with certain systems when detecting PCI BARs

v1.06 - add support for PCI/AGP frame buffers (EXPERIMENTAL)

K6INIT now scans both VESA LFB modes and PCI/AGP graphics card BARs, bringing a potential speedup in especially Windows applications.

v1.04a - Complete rewrite, adds L1/L2 cache control

What's new?

• Complete rewrite
• Nice fancy new on screen appearance
• Better error feedback
• Finer MTRR control introduced, regions can now be specified distinctly as write-combined and/or uncacheable
• Better memory detection, adding the int 0x15, ax=0xe820 method
  • Fixes support for FIC VA-503(A) motherboards
• Fix write allocate region being a few KB too small
• Add control for L1 and on-die L2 cache (if present)

Screenshots

v0.91 - Hotfix for memory footprint issue

What's new?

• K6INIT no longer uses memory when loading in CONFIG.SYS

v0.90 - Fixes, set Multiplier for K6-2+/K6-III+

This version allows you to set the multiplier for the K6-2+/K6-III+ CPU.

Other changes:

• Some typos and restructuring
• updated README
• Fix missing function call that resulted in Write Order Mode not being set.

v0.04 - Bug fixes!

NEW in this release:

• Write Ordering parameter (/wo) no longer causes a string parse error.
• Added /wcdisable parameter to completely disable write combining
• Fixed crash/freeze when writing a 2nd MTRR (usually when using /vga parameter)
• Fixed write order misnamed function in K6CPU.ASM (probably caused WO register write to have no effect)
• Fixed write allocate memory size being off by 4MB
• Improved command line error display (I really like this one 😜)

v0.03 - Write ordering mode, custom regions & command line parameters!

NEW in this release:

• Write Ordering Mode configuration has been added
• Many command line parameters have been added!
• You can now specify custom Write Combining regions
• You can now specify custom Write Allocate Size & Memory Hole info
• You can now enable Write Combining for the legacy VGA memory region
• You can now skip autodetection for WC/WA in case they fail on your machine

Have a look at README.MD to see what is now supported!

This is all VERY UNTESTED and probably broken in some ways. Please help me by testing <3

v0.02 - Set Write Allocate for System Memory

Discuss here: https://www.vogons.org/viewtopic.php?f=46&t=83187

v0.01

This version supports finding LFB(s) using VESA BIOS Extension (VBE) queries and sets the MTRR0/1 registers in the CPU accordingly to enable Write Combining.

On my system this works and sets Write Combining for E000000 with a size of 32MB for my GeForce 2 GTS card.