Rockwell Automation 9323-S5500D A.I. SERIES MICROLOGIX 1000 AND PLC-500 SOFTW - Manual (Page 30)

Introduction
1-19
If your system has 4 M of RAM (at least 8 M if using a Windows operating system),
you can add the following line to your AUTOEXEC.BAT file to improve software
performance.
C:\DOS\SMARTDRV.EXE 1024
Once you have added this line and rebooted your computer, check to make sure that at
least 3M of RAM is free. Type MEM [Enter] at the DOS prompt. Look at the number
under the “Free” column for “Extended (XMS)” memory; it should be greater than or
equal to 3072. If it is less than 3072, decrease the RAM that is being allocated to
SMARTDRV.EXE, reboot, and check again. (For additional information on
SMARTDRV.EXE, see your DOS manual or type help smartdrv.exe at the DOS
prompt.)
CONFIG.SYS File
This file must be in the root directory of the drive that your computer boots from
(typically drive “C” for a hard disk based system). This file is not needed if you are
using Windows 95 or NT.
The CONFIG.SYS file should contain the following statements:
DEVICE=C:\DOS\HIMEM.SYS
DEVICE=C:\DOS\EMM386.EXE NOEMS
DOS=HIGH
FILES=40
BUFFERS=30
Note The path in your DEVICE statements may be slightly different if you are running
Windows, for example, C:\WINDOWS\HIMEM.SYS or C:\WFW\HIMEM.SYS.
Specifying quantities greater than those listed above are generally acceptable, but
additional buffers will subtract from your available RAM. Use a text editor to modify
or create the CONFIG.SYS file if necessary.
Note If the CONFIG.SYS file is added or edited, you will need to “warm boot” your
computer (press [Ctrl-Alt-Del] ) before the changes take effect.