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Andy Neil
02/15/12 00:52
Read: 593 times
Basingstoke
Uk


 
#185974 - RE: A couple of things ...
Responding to: Richard Erlacher's previous message
Richard Erlacher said:
Secondly, the ratio varies as the code size. If a guy is writing code that has to fit into 2kB, as in a "small" MCU, then he might be better off writing it in ASM because it's pretty easy to manage

Yes, I'd agree with you there.

'C' does have certain minimum "overhead" for its runtime support - so, the smaller the overall code size, the more significant that is going to be in percentage terms. The larger the code gets, the less significant this "overhead" becomes.

A prime example of this is writing a "simple" (sic) "Hello, World" application using printf(). The overhead of including printf() is large, so it really makes such a trivial program look bloated. But the overhead remains the same if you use printf() dozens or hundreds of times; so, in a large program, it can become insignificant - in fact, doing the output "manually" each time could end up taking more code!

I doubt Andy ... would have easily succeeded plowing up new ground with HLL if they hadn't already possessed a firm knowledge of the 805x core

Actually, I started in 'C' on the 8051 with no prior knowledge of the core at all! But I did have plenty of prior experience with other cores...



List of 61 messages in thread
TopicAuthorDate
Which modern small 8051 should I use?      Scott Navarre      02/11/12 15:08      
   addition      Scott Navarre      02/11/12 16:02      
      contradicting yourself.      Erik Malund      02/11/12 16:45      
      Get on with SiLabs        Michael Karas      02/11/12 20:55      
         Thanks for all of your input!      Scott Navarre      02/12/12 17:24      
            power miser      Erik Malund      02/12/12 19:15      
               Re: Power Miser      Scott Navarre      02/16/12 02:48      
            Still Need the SiLabs Adapter      Michael Karas      02/12/12 19:15      
      Why?        Richard Erlacher      02/11/12 23:38      
   RE: 8-bit 8051      Andy Neil      02/12/12 02:01      
      SiLabs is sometimes a bit slow ...      Richard Erlacher      02/12/12 10:25      
         RE: "slow"?      Andy Neil      02/12/12 10:45      
            Well ... It might have been coincidental ...      Richard Erlacher      02/12/12 17:57      
   AT89S2051/4051 or ATLP2052/4052      Jan Waclawek      02/13/12 02:17      
      and lose all the goodies      Erik Malund      02/13/12 06:54      
         Onewire debug?      Per Westermark      02/13/12 07:22      
            tradeoffs      Jan Waclawek      02/13/12 07:43      
               Is a hobbyist not extremely likely to gain      Erik Malund      02/13/12 07:51      
                  JTAG      Per Westermark      02/13/12 08:04      
                     cost to debug      Andy Peters      02/13/12 09:44      
                        cost of AVR debugging "dongle"      Jan Waclawek      02/13/12 11:14      
                  You have to ask yourself ...      Richard Erlacher      02/13/12 08:07      
                     Beginners have even more reason for debug cells, i.e. ICE        Per Westermark      02/13/12 09:34      
                     WHAT, exactly, is a hobbyist likely to gain from built-in de      Andy Neil      02/13/12 10:48      
                        I still think it 6 one way and half-a-dozen the other      Richard Erlacher      02/13/12 21:37      
                           why go old fashioned      Erik Malund      02/14/12 07:29      
                              Where you sit determines what you see.      Richard Erlacher      02/14/12 08:00      
                     exactly this        Erik Malund      02/13/12 11:10      
                        Those are all things the monitor allows      Richard Erlacher      02/13/12 21:38      
                           please explain how the monitor allows ...      Erik Malund      02/14/12 07:37      
                              Monitors really not good choice for new designs/developers      Per Westermark      02/14/12 07:51      
                                 Describing Richards preferences      Erik Malund      02/14/12 08:16      
                              It doesn't help with 'C' code at all      Richard Erlacher      02/14/12 08:10      
                                 maybe not using that word      Erik Malund      02/14/12 08:19      
                     "Small" 8051      Scott Navarre      02/14/12 08:38      
                        RE: "Small" 8051      Andy Neil      02/14/12 09:15      
                        Productivity/quality really important for hobbyists too        Per Westermark      02/14/12 09:28      
                        the calculation      Erik Malund      02/14/12 09:39      
                           True cost comes in maintainance      Per Westermark      02/14/12 09:56      
                              I totally agree, however      Erik Malund      02/14/12 10:06      
                           Ratio?      Andy Neil      02/14/12 11:02      
                              all numbers are arbitrary      Erik Malund      02/14/12 11:26      
                                 but it's good to be ...      Andy Neil      02/14/12 12:43      
                                    Not needed      Per Westermark      02/14/12 13:29      
                              A couple of things ...      Richard Erlacher      02/14/12 21:21      
                                 RE: A couple of things ...      Andy Neil      02/15/12 00:52      
                                 neither does a SILabs toolstick      Erik Malund      02/15/12 09:34      
                                    Starting out, the old-reliable antiques are very easy      Richard Erlacher      02/15/12 21:46      
                                       Wrong conceptual level for majority of needs      Per Westermark      02/16/12 02:54      
                                       only somewhat true      Erik Malund      02/16/12 07:21      
                        First, Define Icc and Code Size Targets      Jim Granville      02/15/12 03:00      
                           It's more complicated than that      Andy Neil      02/15/12 04:55      
                           that is not enough      Erik Malund      02/15/12 09:42      
                              that is not enough      Jim Granville      02/15/12 13:30      
                                 which was what I posted      Erik Malund      02/15/12 13:49      
                                    ROFL      Jim Granville      02/15/12 14:52      
                                    Not a simple formula!      Andy Neil      02/15/12 16:03      
                  power      Jan Waclawek      02/13/12 08:12      
                     OCD != Emulation        Andy Neil      02/13/12 10:31      
               the particular hobbyist in question      Andy Neil      02/13/12 10:42      
                  It does allow him to maintain separation from the hardware      Richard Erlacher      02/13/12 21:41      

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