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Jan Waclawek
12/12/05 16:17
Read: 758 times
Bratislava
Slovakia


 
#105100 - thoughts
Responding to: Jon Ledbetter's previous message
First, I think this thread belongs to the "mainstream" message board, it IS '51 related (even '51 SPECIFIC).

Then, I would mention the Keil's baudrate calculator (link).
Also I would list alternative terminal emulators, my favorites are Terminal by Bray and TeraTerm. For beginners, especially the Bray's is much much easier to use (-> less frustration). Ian could add "reference" terminal emulator for Linux. There is also certainly at least one good for the Macs.
Also for the MAX232 I would mention that there are
- clones, at least one of them with different polarity of one cap
- versions (and clones of them) requiring only 100nF ceramic=unpolarised caps -> RECOMMENDED
- capless version (as mentioned by Sasha; however I would not adhere to it as the MAX232 clones are much more widespread)
- full 3/5 versions in both directions (even expanded 5/5 versions)
- pumpless versions (these are probably historically older) - need +-12V supply (that's why the PC power source still has -12V!)
- 3.3V and dual-supply versions

Mention the hardware/software handshake and it's meaning.
Mention different connections of the DSUB9 connector - you connected it as DCE ("modem"), for that a simple "straight" cable could be used, simply crimping a "crimpable" DSUB9 male and a DSUB9 female onto a piece of 9-lead flat cable. But many use it as DTE (as in "PC"), a male, requiring "nullmodem" (crosswired) cable. The most "pervert" is to use various mirrored connectors, nonstandard connectors etc.


Jan Waclawek


List of 46 messages in thread
TopicAuthorDate
Feedback needed        Jon Ledbetter      12/12/05 13:29      
   Couple of ideas      Sasha Jevtic      12/12/05 14:24      
   Missing      Andy Neil      12/12/05 15:28      
      the source...      Jan Waclawek      12/12/05 16:10      
         Stupid EIA      Andy Neil      12/13/05 00:52      
      Maybe a Name change?      Jon Ledbetter      12/12/05 22:30      
         minor but annoying ...      Richard Erlacher      03/17/06 09:33      
   USB      Ian Bell      12/12/05 16:06      
      Limited Experience      Jon Ledbetter      12/12/05 22:43      
      known bad USB/serial      Jan Waclawek      12/13/05 01:56      
      FYI - Targus PA088      Jon Ledbetter      12/13/05 09:46      
   thoughts      Jan Waclawek      12/12/05 16:17      
      I am so stupid      Jan Waclawek      12/13/05 02:02      
         Kickstart      Jon Ledbetter      12/13/05 07:36      
   attribution      Steve M. Taylor      12/13/05 03:41      
   The ONE thing I always have to look up a      Erik Malund      12/13/05 08:03      
   Ok - Second revision, but still working,      Jon Ledbetter      12/15/05 14:16      
      Nice      Steve M. Taylor      12/15/05 15:12      
         OK      Jon Ledbetter      12/15/05 15:33      
         MAX202 vs. MAX232A      Jan Waclawek      12/16/05 02:32      
         or the 232A      Erik Malund      12/16/05 06:32      
      Polled; Interrupt      Andy Neil      12/16/05 00:39      
         polled tx      Jon Ledbetter      12/16/05 07:48      
            Assorted small ideas      Sasha Jevtic      12/17/05 00:19      
               Not a good idea      Kai Klaas      12/17/05 06:46      
                  Serial speeds?      Sasha Jevtic      12/17/05 08:41      
                     Enhanced specifications      Kai Klaas      12/18/05 06:38      
                        That's a strange spec      Sasha Jevtic      12/20/05 15:04      
      formal stuff      Jan Waclawek      12/16/05 02:59      
         formal      Jon Ledbetter      12/16/05 08:23      
            who's the intended audience      Jan Waclawek      12/16/05 09:15      
   3rd Revision      Jon Ledbetter      12/27/05 08:47      
      Busy?      Jon Ledbetter      01/03/06 12:23      
         more than a couple of comments...      Jan Waclawek      01/04/06 16:27      
            So.....      Jon Ledbetter      01/05/06 15:01      
               what I like or not...      Jan Waclawek      01/06/06 08:25      
                  comments      Jan Waclawek      02/28/06 05:18      
                     Comments on Comments      Jon Ledbetter      02/28/06 09:37      
                        bah...      Jan Waclawek      02/28/06 11:25      
                           more problems      Jan Waclawek      02/28/06 13:20      
                              RE: Problems      Jon Ledbetter      02/28/06 13:36      
                              Something Strange      Jon Ledbetter      02/28/06 13:57      
                                 Nope....      Jon Ledbetter      02/28/06 14:28      
                                    interrupt      Jan Waclawek      02/28/06 15:30      
   All members will enjoy      Ralph Sack      03/16/06 21:55      
   Intel serial intro app note      Sasha Jevtic      03/28/06 15:16      

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