Serial Port Definitions

Note:  [Text] = Item only exists under given circumstance.

• Serial Port Attributes :
   ◊ GPIa is connected to DCDa = Does the modem port provide handshaking
               on pin 7 of the connector in addition to pins 1 and 2?
   ◊ GPIb is connected to DCDb = Does the printer port provide handshaking
               on pin 7 of the connector in addition to pins 1 and 2?
   ◊ GPIa is connected to RTxCa = Does the modem port provide support for
               devices with separate data clocks, such as synchronous modems?

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• Port Configuration :
   ◊ Configuration Type = Specifies the configuration, either serial (on either
               port) or AppleTalk (just on the printer port).  For AppleTalk, the 
               version is also specified
   ◊ Baud = For serial only, the number of bits per second transmission speed [Not 
               AppleTalk]
   ◊ Parity = For serial only, the parity [Not AppleTalk]
   ◊ Bits/Char = For serial only, the number of bits/char recognized [Not 
               AppleTalk]
   ◊ Stop Bits = For serial only, the number of stop bits [Not AppleTalk]
   ◊ Modem Data; = For serial only, a dump of all the info registers in any
                modem that is connected and turned on. [Not AppleTalk]  [Checking On]