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Type: Posts; User: Brian Fairchild

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  1. Re: Any advice on small (7" or smaller) VGA monitors for Prop debug use?

    A 7" VGA capable display, with a 5-wire resistive touchscreen, can be had on eBay for around 36GBP. They seems to come with a separate PCB for the touchscreen which has USB out but I'm thinking that...
  2. Re: Any advice on small (7" or smaller) VGA monitors for Prop debug use?

    Has anyone played with any 7" VGA-capable units with a built-in touchscreen?
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    Re: Prop-2 Release Date and Price

    My prediction is FPGA images in 2015; real production chips in 2016 at the earliest.
  4. Re: Is it time to re-examine the P2 requirements ???

    Thanks Heater; sounds like I'll give it a miss then.

    Oh well, someday someone will make the perfect processor.
  5. Re: Is it time to re-examine the P2 requirements ???

    I've been trying to think of a reason not to buy one of these...

    http://uk.rs-online.com/web/p/processor-microcontroller-development-kits/8194709/

    The Parallella Epiphany III Desktop Computer
    ...
  6. Re: Is it time to re-examine the P2 requirements ???

    Price = the amount of money a vendor thinks a product is worth.
    Value = the amount of money a buyer thinks a product is worth.
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    VGA_HiRes_Text and C

    Has VGA_HiRes_Text been ported across to C yet? Or is it trivial to do so?
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    Re: uclinux

    m00tykins,

    I can't help but think that you're trying to re-invent the (round) wheel using a square processor. The P1 and P2 aren't designed for CPU duties; they're designed as real-time...
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    Re: Propeller 3 Spun Up Yet?

    Just seen that RS now have Epiphany3 boards in stock.
  10. Re: Hello...... Anyone out there?

    Snap! And playing with Maximite and adding custom commands into it.
  11. Thread: Lament

    by Brian Fairchild
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    Re: Lament

    For me it was 6502 -> Z80 -> 8051 -> AVR at home as 'serious' chips with all sorts of others, like ADSP2100, to play with. Work was 8085 family -> 8051 -> 8086 -> AVR ->....

    I still get a buzz out...
  12. Thread: Lament

    by Brian Fairchild
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    Re: Lament

    When I first saw this suggested I thought the world had gone mad but can now see a huge amount of logic behind it. An ARM core with 16 very-capable soft-peripherals around it would be an amazing chip.
  13. Thread: Lament

    by Brian Fairchild
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    26,917

    Re: Lament

    Thanks and good advice. It'd be a pretty pointless protest anyway. This is something that needs to get done; I've got a couple of designs to do that'll be so much easier in a 32-bit processor.


    ...
  14. Thread: Lament

    by Brian Fairchild
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    26,917

    Re: Lament

    That's an impressive list of 'stuff' there Heater. I had a similarly long list until a few months ago when I moved a lot of it on via eBay. Although, if I dig around, I suspect I've still got far too...
  15. Re: Open Propeller Project #6: Clarinet Tone Detection

    I stumbled across this whilst looking for something else...

    http://en.wikipedia.org/wiki/Constant_Q_transform
  16. Thread: Lament

    by Brian Fairchild
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    26,917

    Re: Lament

    Waking up to another Groundhog Day is too tiring so it's time for me to move on.

    It's clear to me that this new chip is heading the way of the P2 as more and more 'features' get added on. Key...
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    Re: New Hub Scheme For Next Chip

    Doesn't that make writes non-atomic?
  18. Re: Houston, we have a problem... The New P2 doesn't fit.

    Yep, CORDIC and big multiplier.
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    Re: New Hub Scheme For Next Chip

    So they'll tell you although once you look at the generated code, it seems they make do quite happily with around 16 of them.
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    Re: New Hub Scheme For Next Chip

    ^^^^^What he said. IIRC the optimal C processor has something like an accumulator, a secondary register, an index register, and a hardware stack.
  21. Re: The case for Additional/Extended COG RAM (+2/4/6/8KB)

    And note that I said...



    ...as I'm not even convinced it needs to be RAM. It could even be a high-speed message passing mechanism.
  22. Re: The case for Additional/Extended COG RAM (+2/4/6/8KB)

    My statement is based around answering a fundamental question...

    Is the hub there to support the cogs or are the cogs there to make use of the hub?

    ...and a secondary question of...

    Is...
  23. Re: The case for Additional/Extended COG RAM (+2/4/6/8KB)

    It can; it's just that something else has to give.
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    Re: New Hub Scheme For Next Chip

    How would that work in practice when using a HLL?
  25. Re: The case for Additional/Extended COG RAM (+2/4/6/8KB)

    Depends on what you believe the 'propeller' concept is.
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