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OS/2 Shareware BBS: SysTools
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SysTools.zip
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k6driver.zip
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k6.txt
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1999-07-11
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AMD K6, K6-2, K6-III OS/2 driver v1.1
======================================
This driver is designed to enable the AMD K6-xx cpu's "write-allocate" feature
according to the amount of main memory installed. Usually this should be done
already by the mainboard's bios. But if the K6-xx is used as an upgrade
solution in old Pentium boards, the bios might not be aware of this
performance enhancement feature.
There is an additional feature present in all K6-III and certain K6-2 cpus,
called "write-combine". This may speed-up access to the memory buffer
of your pci or agp graphics card. Normally this feature should be enabled
by the video driver when decting a suitable cpu...
K6.SYS does not stay resident after initial load. So it does not occupy
any system resources, except for a few milliseconds delay at boot-up.
Installation
------------
Copy K6.SYS to the \OS2\BOOT directory of your OS/2 Warp3 or Warp4 system.
Add the following statement to CONFIG.SYS: BASEDEV=K6.SYS
CONFIG.SYS command line options
-------------------------------
/V show screen output
/w???????? enable first write-combine region using given hex value
/W???????? enable second write-combine region using given hex value
how to calculate the write-combine value
----------------------------------------
1.Find out the physical address and size of your graphic card's memory buffer.
There are some tools available to do this, like SCANPCI.EXE
2.Read the K6-2 or K6-III data sheet available as .PDF from AMD and
calculate the appropriate value.
3.If you don't have or don't understand the data sheet, you may try this:
BASEDEV=K6.SYS /V /w??01FE02
where ?? is the leading two hex digits of the video memory's physical address.
Robert Lalla, Loerrach, Germany rlalla@stepnet.de
!! Warning: The use of K6.SYS is at your own risk !!