Setup/Edit Dos Configuration Files; Config.sys - Symbol PDT 7500 Series Product Reference Manual

Setup/Edit DOS Configuration Files

This section details the recommended edits of DOS system files. For more information on
editing the DOS system files covered in this section, please refer to the Microsoft
User's Guide.
Note: See the Spectrum24 NDK for DOS Reference Guide for
CONFIG.SYS and AUTOEXEC.BAT file edits for use in the
Spectrum24 environment.

CONFIG.SYS

HIMEM.SYS Device Driver
This driver provides access to the terminal's extended memory (RAM beyond the first 1 MB).
It provides services for managing the High Memory Area (HMA), which is the first 64K of
extended memory, and an Extended Memory Specification (XMS) API for managing the
remainder of extended memory.
Various uses of extended memory include:
Loading DOS high (see DOS Settings: DOS = HIGH)
!
Using Upper Memory Blocks (UMBs; see EMM386.EXE)
!
Using Expanded Memory (EMS; see EMM386.EXE)
!
Using DOS Extenders.
!
Note: This driver must be loaded in CONFIG.SYS to allow use of extended
memory. Most configurations created for the PDT 7500 should
include this driver.
Recommended usage in CONFIG.SYS is:
The /TESTOFF:OFF option skips the memory test and speeds up the boot process.
Terminal Configuration: Edit the Configuration Files
DEVICE=HIGHMEM.SYS/TESTMEM:OFF
®
MS-DOS
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