IBM L40 SX Quick Reference page 145

PS/2 Model L40 SX Quick Reference
HIMEM.SYS
#E.1.2.1 HIMEM.SYS
#This device driver manages the use of extended memory.
#The HIMEM.SYS device driver manages an application's use of extended
#memory and the high memory area (HMA). This prevents applications from
#simultaneously using the same area of memory. You install the HIMEM.SYS
#device driver by adding a DEVICE command for it in your CONFIG.SYS file.
#The DEVICE command for HIMEM.SYS must precede any DEVICE commands for
#applications or device drivers that use extended memory (such as
#SMARTDRV.SYS).
¦ Copyright IBM Corp. 1991
E.1.2.1 - 1