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Richard Erlacher
01/14/13 23:35
  01/14/13 23:36

Read: 789 times
Denver, Co

#189171 - Not exactly ...
Responding to: Erik Malund's previous message
If I've berated you at all it's been because you frequently ignore what the person making the request for information asks and recommend something else instead. In this particular case, the original poster made it clear that he understands some of what he's doing. Clearly, he doesn't understand it well, but telling him to do something else probably won't help him.

Apparently you've overlooked that the Dallas chips, i.e. the ones with on-chip program store, e.g. that DS89C430 he previously mentioned, are, in fact, ISP chips, though they won't, IIRC, allow you to program the bottom 32 kBytes with IAP. Since that's not his stated goal, I don't suppose it matters.

I fundamentally agree that some of the SiLabs devices may work as well as the Dallas chips he's mentioned, but those aren't the ones with which he's asking us to help him. However, what I recommended was that he use the ISP feature of that Dallas part, which simply requires a serial port. While the parallel programming circuit and algorithm was published in the original DS89C4x0 datasheet, I've never recommended it above the serial (RS232) version, since the serial version is so simple.

I'm still convinced that when a guy asks how to implement external memory, utilize an 8255, or do something else outside the current mainstream, it is a disservice to him to tell him to use a component other than what he's asked about until after you've told him how to do what he wants. Once you've told him how to do things in what you consider the wrong way, since it should still work properly, you can recommend an easier way, since it should become apparent to him that your way is better. Your frequent, "Don't do what you want, do what I want!" is not helpful.


List of 40 messages in thread
Regarding Typical memory connection for a ds80c320      James Brzycki      01/13/13 19:39      
   drop it!      Erik Malund      01/13/13 20:10      
   same question - same answers      Andy Neil      01/13/13 23:32      
   It won't work      Andy Neil      01/13/13 23:41      
      Andy Neil's previous message      James Brzycki      01/14/13 06:41      
         little feet stamping the floor      Erik Malund      01/14/13 07:33      
            little feet stamping the floor      James Brzycki      01/14/13 07:45      
               Erik doesn't like it when you don't do what he wants      Richard Erlacher      01/14/13 11:11      
                  KISS      Erik Malund      01/14/13 11:39      
                     Not exactly ...      Richard Erlacher      01/14/13 23:35      
                        I find it odd that you      Erik Malund      01/15/13 09:29      
                           just to add      James Brzycki      01/15/13 11:24      
                              If you really want to use ds80c320      Jim Granville      01/15/13 18:28      
                                 Not necessary ...      Andy Neil      01/15/13 23:31      
                                    What about the other option?      Richard Erlacher      01/16/13 02:00      
                                    Yes, but ..      Jim Granville      01/16/13 12:56      
                              So your development cycle will be...      Andy Neil      01/16/13 01:01      
                           What about that other post?      Richard Erlacher      01/16/13 01:50      
                              reply to all      James Brzycki      01/16/13 14:12      
                                 'something'      Erik Malund      01/16/13 15:16      
                                    "something" reply      James Brzycki      01/16/13 16:35      
                                 Some links to reduce work       Jim Granville      01/16/13 19:11      
                                 I'm not surprised ...       Richard Erlacher      01/17/13 01:06      
                                    down memory lane      Erik Malund      01/17/13 09:38      
                                       Antique chips        Mahmood Elnasser      01/17/13 10:04      
                                          in my opinion      Erik Malund      01/17/13 13:06      
                                             Just where, under the hood, can you look?      Richard Erlacher      01/17/13 21:42      
                                                this applies equally well      Erik Malund      01/17/13 21:52      
                                                   Did he say he wants apples?      Richard Erlacher      01/17/13 21:57      
                                          Highly integrated devices deprive one of valuable experience      Richard Erlacher      01/17/13 21:38      
                                       the only difference ...       Richard Erlacher      01/17/13 12:14      
                                          a monitor can not       Erik Malund      01/17/13 13:09      
                                             I don't think anyone's that foolish ...       Richard Erlacher      01/17/13 21:15      
                                                I do      Erik Malund      01/17/13 21:26      
                                                   He doesn't have to apply external memory      Richard Erlacher      01/17/13 21:55      
                                                      by your posts he does      Erik Malund      01/17/13 22:14      
                                                         You have to consider ALL his posts      Richard Erlacher      01/18/13 11:47      
            The bible links      James Brzycki      01/14/13 07:47      
               you are right      Erik Malund      01/14/13 08:07      
                  Thanks      James Brzycki      01/14/13 08:29      

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