Microsoft KB Archive/78438

= Newer Epson Computers Use A20 Handler 1 with HIMEM.SYS =

Article ID: 78438

Article Last Modified on 11/16/2006

-

APPLIES TO


 * Microsoft MS-DOS 5.0 Standard Edition
 * Microsoft MS-DOS 5.0a
 * Microsoft MS-DOS 6.0 Standard Edition
 * Microsoft MS-DOS 6.2 Standard Edition
 * Microsoft MS-DOS 6.21 Standard Edition
 * Microsoft MS-DOS 6.22 Standard Edition

-



This article was previously published under Q78438



SUMMARY
According to Epson, older Epson computers require various different A20 handlers (machine switches) with the HIMEM.SYS device driver. More recent Epson computers use A20 handler number 1.



MORE INFORMATION
The following computers use the HIMEM.SYS driver with an A20 handler (machine switch) of one (/M:1):


 * Epson Equity 286 Plus
 * Epson Equity 386SX Plus
 * Epson Equity 386SX/20 Plus
 * Epson Equity 386/25 Plus

HIMEM.SYS is loaded through the CONFIG.SYS file as follows:   device= :\ \himem.sys

-or-

  device= :\ \himem.sys /m:1 where and are the drive and directory location of the HIMEM.SYS file (typically C:\DOS).

The products included here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional query words: 6.22 5.00 5.00a 6.00 6.20 3rdparty

Keywords: KB78438

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.