Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!athena.mit.edu!dcw
From: dcw@athena.mit.edu (David C. Whitney)
Newsgroups: comp.sys.apple
Subject: Re: Apple IIe interfaces
Message-ID: <9273@bloom-beacon.MIT.EDU>
Date: 15 Feb 89 19:05:21 GMT
References: <8902141814.aa02244@SMOKE.BRL.MIL>
Sender: daemon@bloom-beacon.MIT.EDU
Reply-To: dcw@athena.mit.edu (David C. Whitney)
Organization: Massachusetts Institute of Technology
Lines: 37

In article <8902141814.aa02244@SMOKE.BRL.MIL> ROBRICK@ERENJ.BITNET (Robert Brickman) writes:
>
>     If anyone has the documentation foran Apple Super Serial card
>     handy, can you tell me what each of the DIP switch settings
>     mean, especially those regarding the handling of interupts.

The handy-dandy ref card in the back of the manual is BIG and chock
full of info. To use the card in communications mode, turn SW1-5,6 ON.
Once in Comm mode, then:
SW1-7 controls RS-232-C signals.
SW2-6 controls interrupts
SW1-1 to SW1-4 control baud rate (most comm progs override this setting, tho)
SW2-1,2 control data fromat (# bits/char, # stop bits - usually overridden)
SW2-3,4 control parity (usually overridden)
SW2-5 controls whether to send a LF after CR

Alot of the other functions of the card are controlled strictly by software.

To turn on printer mode, SW1-5 OFF and SW1-6 ON. Once in printer mode:
SW1-5,6 ON OFF for SIC P8 emulation (don't know what that means)
SW1-5,6 OFF OFF for SIC P8A emulation (ditto)
SW1-7,2-7 ON OFF for normal clear to send
SW1-7,2-7 OFF ON for secondary CTS
SW2-1 ON for 8 data,1 stop; OFF for 8 data 2 stop
SW2-3,4 control line width/video: ON ON for 40/video on
				  ON OFF for 72/off
				  OFF ON for 80/off
				  OFF OFF for 132/off
SW2-2 OFF for no delay after a CR, ON for 32ms delay after CR
other switches are the same as comm mode

Hope that helps

Dave Whitney	Third year undergraduate student in Computer Science at MIT
dcw@athena.mit.edu  ...!bloom-beacon!athena.mit.edu!dcw  dcw@goldilocks.mit.edu
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