Search:

Type: Posts; User: Brian Fairchild

Page 1 of 10 1 2 3 4

Search: Search took 0.01 seconds.

  1. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    Hmmm, it's a nice day outside and it's a Public Holiday so I don't think I'll be doing too much work today.



    The most common (16%) opcode is to load an immediate value into a register. So, can...
  2. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    That's very likely to be true.

    I've been doing some optimisation work on some code written for a customer on an 8-bit uC. It comprises about 3k lines of code generating lines in C which compiles...
  3. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    re: Coroutines

    Before arguing about implementation details, didn't there ought to be a consensus on what coroutines are first? Because there's precious little of that out there on the interweb.
  4. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    I think it does and I think it's a fundamental Law of most 'systems'.


    Brooks, in the Mythical Man Month, talks about this as a reason that adding people onto a late running project often makes...
  5. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    In my case: none. But then I usually have another processor alongside the P1 running 'main()'. It's not unusual for me to have arrays of structures containing arrays. Or 2D arrays.

    My designs...
  6. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    Surely multipliers come into their own when used by the compiler to calculate the address of elements within a structure?
  7. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    Especially with 16 core to play with.
  8. Replies
    52
    Views
    1,228

    Re: 50 MIPS LMM on Prop1+

    If it's possible to get 25 MIPS per core then it might be a runner but no-one to seems have said 'Yes, we can do that.' Ah, the fun of fluid specifications.
  9. Replies
    52
    Views
    1,228

    Re: 50 MIPS LMM on Prop1+

    Hi Ross, I respect your opinion but think you are wrong. I'd have to rewrite your statement as...

    "I agree how fast the chip runs is critical, but for the Propeller, the speed of COG execution is...
  10. Replies
    52
    Views
    1,228

    Re: 50 MIPS LMM on Prop1+

    Ahem... http://en.wikipedia.org/wiki/Sophie_Wilson
  11. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    Do you mean that? Or should there be a 'not' in there?
  12. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    Not me: in fact I suggested something similar just two posts above you.
  13. Replies
    52
    Views
    1,228

    Re: 50 MIPS LMM on Prop1+

    I think it's a question of what hubexec means to people which is why I always try to ask about the numbers not how the chip achieves them. What the compiler outputs doesn't matter to me one bit; how...
  14. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    Just a random early morning thought but does it matter if all Cores don't have equal access to the RAM?

    In other words there are 16 cores which have restricted access to act as intelligent IO and...
  15. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    I'll go so far as to say that'll it'll kill the P1+ dead UNLESS LMM works at a reasonable speed.

    So, the question is, what speed, in raw MIPS, will LMM give us on the new chip?
  16. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    How many opcodes are we up to now? :)
  17. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    Q1) Am I right in thinking that, as things stand, cores running out of hub ram will run at 50 MIPS and that all 16 cores will be able to run at that rate simultaneously?

    Q2) And that when running...
  18. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    If it's an either/or choice then hub exec has to stay.
  19. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    I'm hoping some ideas don't make it into the final chip and I'll claim those as my badge of dishonour.
  20. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    Quibble accepted.
  21. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    re: Compilers and Execution Models

    FWIW, I see the ideal, friendly and easy to start with, C world something like this...

    1) You write some ANSI vanilla code and give it to your compiler. It...
  22. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    Reminds me of an episode of "Yes Prime Minister"...
  23. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    That's a very good point and follows on from HUB becoming just "memory".
  24. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    And, run fast deterministically at that.
  25. Re: The New 16-Cog, 512KB, 64 analog I/O Propeller Chip

    How many of those won't work with the new pin-based counters?
Results 1 to 25 of 250
Page 1 of 10 1 2 3 4