Intermec 6200 Reference Guide

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DOS device drivers tell the operating system about specific PC hardware compoĆ

nents that are not directly supported by BIOS.  Device drivers are loaded into

memory at boot time; and they enable peripherals such as CDĆROM drive or

memory above 1 MB.  The PEN*KEY 6000 Series Computer requires at least

one device driver, HIMEM.SYS, to control access to the high memory area

(HMA); the first 64K RAM above the 1ĆMB boundary.  Other DOS device drivers

may be loaded, depending on the requirements of attached peripherals.  DOS deĆ

vice drivers are always loaded into memory from the CONFIG.SYS file, which is

located in the root directory of the default boot drive.
The default configuration in the PEN*KEY 6000 Series Computer not only inĆ

cludes the device driver HIMEM.SYS (in CONFIG.SYS), but also several drivers

for PC Card services, allowing for the use of flash memory and modem cards in

the PC Card slots.  The exact contents of the CONFIG.SYS file depends on the

requirements of the individual application and the peripherals selected.