Epson Equity I User Manual page 26

If you are not sure how much memory your computer has, set these
switches after you turn the computer ON for the first time. The initial
messages on the screen tell you the memory size. You can then set the
switches accordingly. Before you change the switch settings, however,
turn the computer OFF.
Switches 6-7 (monitor type)-tell your system what type of monitor you
are using. Set them accordingly. Although it is not shown above, the
display type can be set with both switches ON for an enhanced color
graphics card. Only set both these switches to ON if you are sure of what
you are doing.
Switch 8 (floppy disk drive)-indicates how many floppy disk drives
your system has. This switch is very important. If you only have one
drive, set this switch ON (UP) so the operating system knows to provide
help when a second disk drive is normally used. If you have two floppy
disk drives, set this switch OFF (down), so the operating system does not
ignore the lower drive.
Switches 9-10 (built-in interface)-tell your system what type of inter-
face you are using. You can leave both these switches ON.
Some option cards contain serial or parallel interface ports. If you
want to use the port on the card, turn OFF the appropriate DIP switch.
For example, if you have installed an option card with a serial interface
that needs to be used as COM1: (the device name usually assigned to the
built-in serial port), you need to turn OFF DIP switch 10. Similarly, to
disable the built-in parallel port, turn OFF DIP switch 9.
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