Epson Equity II - Manual (Page 26)

Switch 4 (internal parallel interface)-To use two or more parallel
devices (usually printers), you need to designate the built-in parallel
interface as either primary or secondary. In MS-DOS, you would then
refer to it as LPT1 or LPT2 respectively. To use the built-in interface as
the primary device, turn off switch l-4. If you have not installed extra
parallel interfaces, the built-in interface is the primary device regardless
of how you set this switch. You cannot disable the built-in parallel inter-
face. If you have installed optional parallel interfaces, you can use the
built-in port as the secondary device if you turn on switch l-4. You
can
then select any peripheral connected to an optional port as the primary
device.
Most option cards which contain parallel interfaces have jumper connec-
tors which you must set to tell MS-DOS whether you are using the port
as LPTl, LPT2, or LPT3. If you use the built-in interface as the primary
device, you must set the jumper on the optional interface to make it
LPT2 or LPT3. If you accidentally set both to act as the primary device,
you will not damage the computer, but you will get unpredictable results
from both interfaces.
Switches 5 and 6 (monitor type)-Set switches l-5 and l-6 according to
your monitor type as shown in Table l-l. Be sure to set these switches
properly or you may damage your monitor. If you do not want to use the
built-in video port (for example, if your monitor connects to an option
card), turn on switches l-5 and l-6 to disable internal video.
Switches 7 and 8 (number of floppy disk drives)-If your system has one
floppy disk drive, turn on switches 1-7 and 1-8. If your system has two
floppy disk drives, turn off switch 1-7 and turn on switch l-8.
DIP switch set 2
Table l-2 and the descriptions below explain how to set the DIP
switches in set 2.
Note: Switches 2-l through 2-4 and switch 2-6 are not used. Leave them
Off.
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