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<DIV>Thanks to the several who have offered suggestions. I won't quote them all, but will respond as follows:</DIV>
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<DIV>1. I do plan to take another terminal to the site to find out if the problem is in the windows box</DIV>
<DIV>2. I have not tried "stty -a < /dev/tty2a" to see what the terminal echos back. Will try; should be interesting</DIV>
<DIV>3. I will do as many tests as I can think of to find out which computer is the problem</DIV>
<DIV>4. I don't think the problem is in the wiring since I did, as suggested, place the windows box physically close to the unix host and used a short wire to make the connection. The only unknown variable is the null modem, but I will try a new one on Tuesday.</DIV>
<DIV>5. I did make sure that tty2A was disabled (it was)</DIV>
<DIV>6. Could be a fried serial port in the SCO box; but since I can signal from the SCO to the Windows (just not the other direction) I assumed the SCO box was OK. But indeed, I will investigate.</DIV>
<DIV>7. No SCO 5.0.3?? Hmm... you are probably correct; I was going from memory. It is 5.0.something less than 7.</DIV>
<DIV>8. :-) Yes... the keyboard does work with other apps</DIV>
<DIV>9. I did replace the cable by moving windows box close to the unix host (however, as mentioned above, I did not replace the null modem). Will do so.</DIV>
<DIV>10. Thanks for info on Pin outs... may be helpful.</DIV>
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<DIV>I won't be able to get back to this site until Tuesday. This time I will be armed with more equipment, other cables and adapters, and another terminal to test. Hopefully the problem will pop out. Thanks again.</DIV>
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<DIV>-Lee</DIV>
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<DIV><FONT lang=0 face=Arial size=2 FAMILY="SANSSERIF" PTSIZE="10">Lee B. Walker<BR>Walker & Company<BR>5307 Front Royal Drive<BR>Cross Lanes, WV 25313<BR>304-419-0013<BR>leefp1@aol.com<BR><A href="http://www.walkeronline.com">www.walkeronline.com</A></FONT></DIV>
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<DIV>In a message dated 7/2/2005 8:20:07 PM Eastern Daylight Time, Leefp1@aol.com writes:</DIV>
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<DIV><FONT face=Arial size=2>Looking for any SCO gurus to help diagnose a problem. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>In a sentence, the problem is I have lost serial communication from a Windows XP Terminal running Anzio Lite to a SCO host and cannot figure out why.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Environment: SCO OS 5.0.3. Host is Intel based SCSI box with two serial ports on the motherboard. Com 1 (tty1A) is used for a dial up modem; Com 2 (tty2a) is used for the serial connection to the Windows box. This terminal at this site has worked for several YEARS with no maintenance and no problems.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Problem: As of this past Friday morning when people at this site started working, the communication would not work. Worked on Thursday; did not work on Friday. Two things happened in between: electrical storm Thursday night (Windows box was turned off, but dial up modem connection, used for internet access, on that box was left connected); some System admin work on the Unix host, e.g. running fsck.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The strange this is that if I disable tty2a and then reenable it; Unix sends a getty to the windows box and the login prompt appears. But no keystrokes will be accepted. I am not at the site now, but I wish I would have tried sending a date prompt to the terminal to see if it would have showed up... I suspect it would. Thus, in my laymen's terms, it appears the unix host is able to send to the windows box but the windows box cannot send back.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>My first thought was that the electrical storm fried the Windows serial port (it had only one, com 1). So I installed a separate board with two more ports (Com 4 and Com 5). Same result... I could get a login to come up but could not send keystrokes from the terminal.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>So... any ideas what circumstance could cause this behavior? By the way, there is a null modem in the connection between the unix box and the terminal. In case the problem was in the wiring between the two, I physically took the terminal to the room where the host is and connected directly from serial port to serial port with a short cable (but of course still had to use the null). Same result. Could it be the null modem? I will take a new one there Tuesday to find out, but I doubt that is the problem.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Also interesting, if I uncheck the "full duplex" option on the Anzio communication menu, I can at least get keystrokes to echo to the screen, although it is gibberish and will not perform a line feed. I have no idea what that means.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Any help? Thanks much.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>-Lee</FONT></DIV>
<DIV><FONT lang=0 face=Arial size=2 FAMILY="SANSSERIF" PTSIZE="10">---------------------------------------------</FONT></DIV>
<DIV><FONT lang=0 FAMILY="SANSSERIF" PTSIZE="10"><FONT face=Arial size=2>Lee B. Walker<BR>Walker & Company<BR>5307 Front Royal Drive<BR>Cross Lanes, WV 25313<BR>304-419-0013<BR>leefp1@aol.com<BR></FONT><A title=http://www.walkeronline.com/ href="http://www.walkeronline.com/"><FONT face=Arial size=2>http://www.walkeronline.com/</FONT></A><BR></DIV></FONT><BR><BR><FONT face=Arial size=2>_______________________________________________<BR>Filepro-list mailing list<BR>Filepro-list@lists.celestial.com<BR>http://mailman.celestial.com/mailman/listinfo/filepro-list</FONT></BLOCKQUOTE></DIV>
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