i :
n
. ,
.--
, ,
,r:
l I
~
I !
n
, >
r--"1
i ;
I
_'
,-,
i ;
,.,
, I
1
Appendix C
INSTALLABLE DEVICE DRIVERS
Your
MS-DOS system can use several
device
drivers. A device
driver is a program
that
controls external devices or executes
other programs. The Version 2.11 MS-DOS device drivers
are
included on
the
MS-DOS/BASIC system diskette. Version 2.11
drivers
are:
ANSI.SYS,
KEYCNVRT.SYS,
LPDRVR.SYS,
SPOOLERSYS, and VDISKSYS.
In
Version 3.2 MS-DOS, both
the
MS-DOS/BASIC system diskette and the Supplemental Pro-
grams diskette contain device drivers. Version 3.2 drivers are:
ANSI.SYS,
DRIVERSYS,
KEYCNVRT.SYS, LPDRVRSYS,
MLPART.SYS, SPOOLERSYS, and VDISKSYS.
Device Driver Purpose
ANSI.SYS Provides programmers with many extended
screen and keyboard features, such as the
ability to change graphics functions.
DRIVERSYS Enables your system to support more
than
two
floppy
disk drives and more
than
two
hard
disk drives. Also, DRIVERSYS lets
you
assign more
than
one logical drive let-
ter
to a single drive.
KEYCNVRT.SYS Converts
certain
keyboard
characters
for
application software compatibility.
LPDRVRSYS Lets
you
configure your system to
take
full
advantage of your printer's capabilities.
MLPART.8YS Lets
you
access multiple MS-DOS partitions
on
a hard disk drive.
SPOOLERSYS
Lets
you continue processing
data
while
printing.
VDISK.SYS Lets
you
establish a virtual disk drive
in
RAM.
331