Epson 10020 - Manual (Page 136)

Running the Setup Program
You can use the Setup program on your Reference diskette to
set (or change) the following for your computer:
Time and date stored in the real-time clock
Primary serial port settings
Secondary serial port settings.
The information you define with the Setup program is scored in
the computer’s CMOS RAM, which is a permanent area of the
computer’s memory because it is backed up by a battery.
Whenever you cum on the computer, it searches the CMOS
RAM for the setup information.
You probably already set the time and date when you first set
up your computer; but the Setup program provides another way
to verify or change these values.
Similarly, you could use the MS-DOS MODE command
instead of Setup to define the serial port parameters. However,
unlike MODE, Setup stores your settings permanently so you
do not have to redefine them every time you load MS-DOS.
Note
If you have already set the date and time and if you are not
using a serial port, You do not need to use the Setup
program.
Starting Setup
Follow these steps co start the Setup program:
1. Insert the Reference diskette in drive A.
A-6 Changing DIP Switches and Using Setup