Path: utzoo!utgpu!water!watmath!clyde!att!mtunj!dbs
From: dbs@mtunj.ATT.COM (d.b.schonfeld)
Newsgroups: comp.sys.apple
Subject: Re: BITNET mail follows
Summary: dcd lead
Message-ID: <184@mtunj.ATT.COM>
Date: 8 Jul 88 15:38:05 GMT
References: <8807071709.aa09272@SMOKE.BRL.ARPA>
Reply-To: dbs@mtunj.UUCP (d.b.schonfeld)
Organization: AT&T ISL Middletown NJ USA
Lines: 44

In article <8807071709.aa09272@SMOKE.BRL.ARPA> HEINEKEN@MTUS5.BITNET writes:
>Get to the BASIC prompt, and (I'm putting my keystrokes in ):
>
>]
>]<^a>
>APRICORN SSI:                <== The cr shows carriage return
>
>This is supposed to throw me into terminal mode.  I get a cute little
>underscore cursor on the screen.  Fine.  I type something.  Anything.
>The cursor goes bye-bye.  The transmit and receive (TD and RD) lights on
>the modem show that nothing is getting to it.  Normally, these lights are
>active when I'm typing Hayes commands to the modem, or when I'm just feeding
>it garbage.

A common cause of this problem is how the dcd lead is handled. Pin 8
on the RS 232 is either ignored or followed by the SSC card. Assuming
this is the same for your serial card, there should be a dip switch which
controls whether or not carrier detect is enabled. You should try setting
the switch to "IGNORE" or "DCD detect disabled". See if this works. You
might also want to see if the terminal ready lead (I believe it is  pin
6 offhand) is ignored.

>So I try a short BASIC program to see if it works from there.  Heck, all
>of the examples in the book are from BASIC, so why shouldn't it work?
>
>10 PRINT CHR$(4);"IN#2"
>20 PRINT CHR$(1);"T"
>30 PRINT "Hello"
>
>Nothing.  It hangs.  No blinky lights.  Hit RESET to continue.  I've tried
>using other commands listed (including ^A3S to chain the 80-col in for I/O),
>but terminal mode always hangs the system.

As far as I know, once you send the card into terminal mode, it is running
a program (read/write loop) separate of basic. Try taking out line #20 in
the above program. You might want to put in a "PR#2" too, otherwise it
will definitely hang on line 30. 

Hope this helps!

Dan Schonfeld
dbs@cord.att.com, dbs@cord.uucp, ihnp4!cord!dbs

"Why are there so many songs about rainbows?" -- Kermit