Symbol PDT 7500 Series Product Reference Manual page 68

PDT 7500 Series Product Reference Guide for DOS
The RAM disk driver and DRVSPACE are device drivers that allocate new drive letters
beyond those automatically allocated by DOS. LASTDRIVE only adds new drive letters (to
be managed by DOS) if the drive letter specified is greater than the last drive letter
automatically allocated by DOS or by device drivers such as RAM Disk and/or DRVSPACE.
One common use of this command is to reserve one or more drive letters for use by the DOS
SUBST command, in addition to the drives needed for RAM Disk and DRVSPACE.
For example, if DOS is managing drives A-F, set LASTDRIVE=G.
For Spectrum24 use with Novell Netware and LAN Workplace TCP/IP stack, LASTDRIVE=
must be set to Z.
• NUMLOCK = [ON | OFF ]
This command sets the state of the numeric lock key on the keyboard on boot up.
• SET
This command sets environment variables in CONFIG.SYS instead of in AUTOEXEC.BAT.
Note: Environment variables are set in CONFIG.SYS only at the end of
CONFIG.SYS, regardless of where the SET command occurs.
Consequently, these settings cannot be used by device drivers, and this
command is generally only used if environment variables are required
by TSRs loaded via the INSTALL= command, or if the application is
being used as a command shell (e.g., turn-key application).
• SET COMSPEC=
This command specifies the drive and path where the shell can be found. Use this command
only if the SHELL= command is used to select a program other than COMMAND.COM as
the shell, or if the shell is located in a directory other than the root directory of the boot drive.
• SHELL = file.ext
This command specifies the command shell to be used. The default command shell is
COMMAND.COM from the boot drive's root directory.
Reasons for using this command include:
" To increase the size of the environment table when running COMMAND.COM
as the shell.
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