User's Manual

Switches 7 and 8 (FloPpy disk drives)-indicate how
many floppy disk drives are installed in your Apex.
These switches are very important and should be set as
follows:
■ For the standard Apex system, which has two
floppy disk drives, set switch 7 OFF and switch 8
ON. (This is the factory setting.)
If you add external floppy disk drives, for a total of
four drives, you need to set switches 7 and 8 as
indicated in Table A-1.
Switches 9 and 10 (Parallel port)–tell the computer how
to access the built-in parallel port, as follows:
The built-in parallel port functions as either the
primary or secondary parallel port. If you decide to
install an option card that has its own parallel
port, you must set these two DIP switches so that
there is no conflict between the built-in parallel
port and the added card. Table A-1 shows you
how to set these DIP switches.
If you install an option card that has only a
parallel port, you must set the DIP switches to
designate this as the secondary port and leave the
built-in port as the primary port.
If you install a video card with a parallel port (such
as an IBM monochrome display and printer
adapter), then you must designate it as the primary
parallel port. In this case, the built-in port becomes
the secondary parallel port.
Setting the DIP Switches A-5