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Per Westermark
01/04/11 07:13
Read: 847 times

#180447 - Easier to jump between many architectures now
Responding to: Erik Malund's previous message
The availability of free tools, and the availability of much searchable code on Internet means that it is way easier now to have a large number of processor architectures on the repertoire.

20 years ago (or even 10), you could get stuck with something as simple as an UART, and have a hard time to get help from a support engineer just because the datasheet was incomplete. With good Google abilities, you can find sample code for almost every aspect of almost any processor. So you seldom get stuck at the bit and register level.

This makes it much easier to work with many processors. You don't need to be as scared of getting stuck if selecting a different processor for a project. 20 years ago, you had your own "golden edition" code that you knew worked, and wanted to stay with processors where you could continue to reuse this base framework.

Of course, the introduction of simple serial programming methods have also greatly reduced the hardware costs needed to test a new processor. Most new processor architectures can be tested with just a couple of dollars of hardware to program them in-circuit. No need for strange adapters and ZIF sockets to program them - if your existing programmer(s) even supported the required algorithm.

The big decrease in memory costs also means that most applications can be written in a HLL (using freely available compilers) while we 20 years ago just had to count every code and data memory cell and invest time in assembly just to get everything to fit.

List of 32 messages in thread
[ARM] Any good introduction to ARM assembler?      Jan Waclawek      12/01/10 02:57      
   Every experimenters moving to ARM??      JecksonS Ben      12/01/10 03:12      
      Large span of capabilities with same tools etc      Per Westermark      12/01/10 03:34      
         Cheaper?      Andy Neil      12/01/10 03:56      
            Depends on how to compare      Per Westermark      12/01/10 05:27      
               How very true      Andy Neil      12/01/10 05:53      
               a caveat      Erik Malund      04/20/11 08:12      
                  Picking the right tool for the job.      Christoph Franck      04/21/11 02:08      
                     sometimes you are not the picker      Erik Malund      04/21/11 08:51      
                        Cortex NVIC behavior.      Christoph Franck      04/21/11 10:57      
                           the way I read it      Erik Malund      04/21/11 14:02      
                              A question if registers needs to be saved      Per Westermark      04/22/11 01:19      
                              Possible cases:      Christoph Franck      04/26/11 01:38      
         luckly      JecksonS Ben      12/01/10 05:32      
            Lucky??      Andy Neil      12/01/10 05:49      
      don't know about experimenters, but ...        Erik Malund      01/04/11 05:35      
         Easier to jump between many architectures now      Per Westermark      01/04/11 07:13      
   Have you tried...      Andy Neil      12/01/10 03:59      
      Is this a way to say "no"? ;-)      Jan Waclawek      12/01/10 06:03      
         In the absence of a recommendation...      Andy Neil      12/01/10 06:22      
   ARM assembly is fairly "plain" ...      Christoph Franck      12/01/10 05:55      
      RealView      Andy Neil      12/01/10 06:01      
      shorter, better...      Jan Waclawek      12/01/10 06:19      
         Just dive right in.      Christoph Franck      12/02/10 01:30      
            Not trivial either      Per Westermark      12/02/10 08:19      
               Valid points, but ...      Christoph Franck      12/03/10 04:15      
            none, then?      Jan Waclawek      12/02/10 13:43      
   related thread on LPC2000 yahoo group      Jan Waclawek      01/04/11 05:10      
   Erik found something      Andy Neil      03/09/11 10:48      
   Re: [ARM] Any good introduction to ARM assembler?      Gopal Amlekar      03/12/11 01:06      
   Check this link      AP Charles      04/23/11 05:50      
      Why? How is it relevant?      Andy Neil      04/23/11 08:45      

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