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Jim Granville
06/01/13 16:54
Read: 991 times

#189845 - multi-threaded
Responding to: JosÚ A. Ruiz's previous message
Jos´┐Ż A. Ruiz said:

Another attractive use case might be building an interconnected crowd of small CPUs as an alternative to a large CPU running a multi-threaded application on a RTOS. This can be done more conveniently inside an FPGA (*really small* soft CPUs that can be programmed in C are hard to come by but that's another story).

There is one company (HoChip) making multi-threaded 8051, and this is one area where a Soft-CPU could make educational sense.

That said, besides the core itself, a weakness in FPGA pathway remains code storage, and it is hard to get the Logic Fabric plus Code storage, for anything like the same price of a real chip.

As an example, the new AT89LP52 is only 65c/100+, and gives a very capable basic core.

List of 23 messages in thread
OCD for FPGA core      JosÚ A. Ruiz      06/01/13 03:48      
   Serial-to-EC2 reverse engineering      JosÚ A. Ruiz      06/01/13 06:12      
   C2spec.pdf      Jim Granville      06/01/13 06:36      
   Reality Check......        Michael Karas      06/01/13 08:24      
      Agreed      JosÚ A. Ruiz      06/01/13 12:53      
         multi-threaded      Jim Granville      06/01/13 16:54      
      FPGA and soft cores      Oliver Sedlacek      06/03/13 02:20      
         Yes ... but which debugger?       Richard Erlacher      06/03/13 10:48      
            Actually no      Oliver Sedlacek      06/04/13 01:55      
               Who's "they"      Richard Erlacher      06/04/13 12:48      
               I wouldn't use FPGA unless I need more than just the core      Richard Erlacher      06/07/13 14:50      
                  FPGA on-chip debugging redundant?      JosÚ A. Ruiz      06/14/13 02:49      
                  debugging embedded processors        Andy Peters      06/25/13 18:56      
                     That's good to know.      Richard Erlacher      06/26/13 11:13      
   nice idea      Maarten Brock      06/02/13 07:03      
      Von Neumann first      JosÚ A. Ruiz      06/02/13 10:23      
   if that were the case ...      Erik Malund      06/03/13 15:19      
      Poorly chosen acronym...      JosÚ A. Ruiz      06/14/13 02:59      
         On Chip Debug is common        Jim Granville      06/14/13 03:44      
            On Chip Debug *is* a very good idea indeed!      Andy Neil      06/15/13 13:44      
               PC        Maarten Brock      06/15/13 14:09      
                  PC        Michael Karas      06/17/13 06:55      
                     PC        Oliver Sedlacek      06/18/13 02:19      

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