DIP Switch Set 2 (Parallel and Serial Port Operations)

The following cable lists the parallel and serial port functions controlled by DIP switch set 2.

DIP switch set 2.

 

 

1

2

3

4

Parallel

Primary

OFF

ON

 

 

 

Secondary

O f f

O F F

 

 

 

Disable

ON

ON

 

 

Serial

Primary

 

 

OFF

OFF

 

Secondary

 

 

ON

OFF

 

Disable

 

 

 

ON

These switches cell the computer how to access the built-in parallel and serial ports. You do not need co change the factory settings unless you install an option card with an additional parallel or serial port. If you do install such a card, read the following information carefully.

Stitches 1 and 2 (paralle port)—tell the computer how co access the built-in parallel port.

The built-in parallel port functions as either the primacy or secondary parallel port. If you install an option card with its own parallel port, you must set these two DIP switches so there is no conflict between the built-in port and the additional port. Here are some examples:

If you install an option card chat has only a parallel port, you must designate it as the secondary port and leave the built-in port as the primary port

If you install an option card chat has both a video port and a parallel port, you must designate this port as primary and make the built-in parallel port secondary.

A-4Changing DIP Switches and Using Setup