Texas Instruments 3000 WinSX - Manual (Page 183)

Memory Device Drivers
The RAM disk is given the drive letter that follows the last drive letter being used by your
system. For example:
q If your hard disk is configured as drive C, the RAM disk is drive D.
q If your ROM disk is drive C and your hard disk drive is drive D, the
RAM disk is Drive E.
SMARTDRV.SYS
SMARTDRV.SYS is a disk-caching program used to reduce the time it takes your
computer to read data from the hard disk.
When SMARTDRV.SYS is installed, information from the hard disk is temporarily stored
in a cache in Extended or Expanded memory. When needed, the data can be accessed by
the processor directly from the cache memory. The data on the hard disk is updated
automatically to reflect the changes in the data stored in the cache. SMARTDRV.SYS
works best when set up in Expanded memory, but also performs well in Extended
memory.
To install SMARTDRV.SYS in its simplest form, include the following command line in
your CONFIG.SYS file:
DEVICE=C:\DOS\SMARTDRV.SYS
In this form, a 256-KB cache will be set up in Extended memory.
If you need to specify a particular size for the cache, or if you want the cache to be in
Expanded memory, refer to your MS-DOS and Windows manuals.
F-10 Configuring Memory