Epson 20 - Manual (Page 35)

Setting the Display Type
Follow the steps below to set the type of display adapter you are using
with your Equity 386. Note that with this option you are selecting the
type of display adapter (the video card) you are using-not the type of
monitor, which may be called something different.
1. Highlight
Display
and press Enter. The following box appears
beneath the main menu:
Special opt ions
is the display adapter type currently selected.
If you have installed an EGA or VGA card in your computer,
this is the correct setting. Press to return to the main menu.
2. To change the setting, press Enter. Another box appears with
these options:
Running the Setup Program 2-5