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???
04/11/06 12:12
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 		 #114065 - I think apples and oranges
Responding to: ???'s previous message
If it meets well-specified test criteria, subject to precise testing with predefined instruments, and agreed upon in advance by all parties, then it's easy to get through acceptance testing.

What you state is, of course, the only criteria that can be applied to "acceptance testing".

however what I have discussed is "functional testing"

Acceptance testing refer to "will message a appear under condition b". Functional testing, which I claim can not be accomplished by "testing", refer to "will there be a hiccup if 3 interrupts coincide while the main is in a given place".

Functional testing, as in the example above, can only be accomplished by design, since it is not testable (no budget I have seen allow more cost for testing than design)

I think apples and oranges, but in this instance both valuable fruits.

Erik

List of 32 messages in thread
TopicAuthorDate
Interfacing 16550 to 80c51            01/01/70 00:00      
   use an SPI UART            01/01/70 00:00      
      Why not an 16550            01/01/70 00:00      
         parallel - serial vs serial -serial            01/01/70 00:00      
         I hope you have the datasheet            01/01/70 00:00      
            well, in this case            01/01/70 00:00      
               That's my point ...            01/01/70 00:00      
                  if he wants to make crap, help him make            01/01/70 00:00      
                     There's no accounting for taste.            01/01/70 00:00      
                        External uart            01/01/70 00:00      
                        a LPC            01/01/70 00:00      
                           Well, that's an option, BUT ...            01/01/70 00:00      
                              My opinion: (1) nor valid (FedEx) (2) un            01/01/70 00:00      
                                 this may be wandering off topic, but            01/01/70 00:00      
                                    many            01/01/70 00:00      
                                       Tested or "seemed to work" ?            01/01/70 00:00      
                                          "try it and ship it"            01/01/70 00:00      
                                             where you sit determines what you see            01/01/70 00:00      
                                                I think apples and oranges            01/01/70 00:00      
                                                   that's the source of the trouble ...            01/01/70 00:00      
   SPI or I2C to UART            01/01/70 00:00      
   Pins, Area, EMI            01/01/70 00:00      
      can't you just specify 2 stop bits?            01/01/70 00:00      
         no i cant            01/01/70 00:00      
            Some possibilities            01/01/70 00:00      
               80c51 Software UART            01/01/70 00:00      
            Why not?            01/01/70 00:00      
               is this not being one of the "folks" Quo            01/01/70 00:00      
   what device does not like 2 stop bits?            01/01/70 00:00      
      Just a guess ...            01/01/70 00:00      
   Schematic for 16550/8051            01/01/70 00:00      
      16550/8051 example            01/01/70 00:00      

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