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Q76817: Fountain 286 Computer Slows After MS-DOS 5 Upgrade

Article: Q76817
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:5.0
Operating System(s): 
Keyword(s): 
Last Modified: 22-NOV-1999

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The information in this article applies to:

- Microsoft MS-DOS operating system version 5.0 
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SUMMARY
=======

The Fountain 286 8/12 MHz computer will perform at 8 MHz after the installation
of MS-DOS 5 Upgrade. HIMEM.SYS, which is added to the CONFIG.SYS file during
MS-DOS 5.0 setup, may be causing the reduced speed.

To correct this problem, use the MACHINE:12 switch and set the CPUCLOCK switch to
On with the HIMEM.SYS driver.

MORE INFORMATION
================

The following syntax should be used for the device driver HIMEM.SYS in the
CONFIG.SYS file:

  device=[drive:][path]himem.sys /machine:12 /cpuclock:on

This will enable A20 handler number 12, instead of the default number 1, and
allow the CPU clock to affect the processing speed of HIMEM.SYS. Note: Though
the computer's processing speed may increase, XMS access speed may decrease.

The product included here is manufactured by vendors independent of Microsoft; we
make no warranty, implied or otherwise, regarding this product's performance or
reliability.

Additional query words: 5.00 3rdparty

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Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS500
Version           : MS-DOS:5.0

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