Epson 20 - Manual (Page 39)

Now, whenever you turn on or reset your computer, it automatically
copies the system ROM BIOS and video ROM to RAM.
If you later want to disable either shadow RAM function, follow the
same procedure; when you select the option and press
Enter, the
enabled
changes back to
disabled.
Setting the Coprocessor Function
The Setup program assumes you have not installed an 80387 math
coprocessor in your Equity 386. If you have, you need to change the
coprocessor option, as follows:
1. Highlight
Coprocessor
and press Enter. This box appears:
2. Press Enter. The option changes to 80387
installed.
3. Highlight
*** SAVE SETTINGS
*** and press Enter to save the
setting and return to the main menu.
If you later remove the coprocessor and need to change the setting in
the Setup program, follow the same procedure to change it back to
8 0 3 8 7 n o t i n s t a l l e d .
Setting the Mass Storage
Follow these steps to set the mass storage (disk drive) configuration for
your computer:
1. Highlight
Mass storage
and press Enter. You see a menu such
as this:
Running the Setup Program 2-9