Epson Equity 320SX PLUS - Manual (Page 56)

These methods may also work in your application program.
If not, you may need to reset the computer, as described
below.
Caution
It is best not to turn off the computer to stop a program or
command. If you created new data and have not yet stored
it, the data will be erased if you turn off the computer. The
computer stores your data in its memory area (RAM) until
you save it; but the data is erased each time you turn off or
reset the computer.
Resetting the Computer
Occasionally, you may want to clear the computer’s current
settings or its memory without turning it off. You can do this
by resetting the computer.
For example, if an error occurs and the computer does not
respond to your keyboard entries, you can reset it to reload
MS-DOS and try again. However, resetting erases any data in
memory that you have not saved; so reset only if necessary.
To reset the computer, MS-DOS must be either on the hard
disk or on a diskette in drive A; so if you do not have a hard
disk, insert the Startup diskette in drive A.
3-4 Using Your Computer