 AMD K6, K6-2, K6-III OS/2 driver  v1.11
 =======================================

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.

revision history
----------------
 v1.0  Jun-20-1999   initial version: support for write allocate feature
 v1.1  Jul-09-1999   added support for write combine feature
 v1.11 Jul-26-1999   fixed: memory size rounding



Robert Lalla, Loerrach, Germany         rlalla@stepnet.de


!! Warning: The use of K6.SYS is at your own risk !!
