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  1. clacke (clacke@social.heldscal.la)'s status on Friday, 04-May-2018 04:26:14 EDT clacke clacke
    Never heard of https://en.wikipedia.org/wiki/Parallax_Propeller before.

    > multi-core processor parallel computer architecture microcontroller chip with eight 32-bit reduced instruction set computer (RISC) central processing unit (CPU) cores

    > Parallax Inc., released all of the Propeller 1 P8X32A hardware and tools as open-source hardware and software under the GNU General Public License (GPL) 3.0. This included the Verilog code, top-level hardware description language (HDL) files, Spin interpreter, PropellerIDE and SimpleIDE programming tools, and compilers.

    > There are at least six different versions of Forth, both commercial and open-source software, available for the Propeller.

    > As of 2014, Parallax is building a new Propeller with cogs that each will run at about 200 MIPS, whereas the current Propeller's cogs each run at around 20 MIPS. The improved performance would result from a maximum clock speed increase to 200 MHz (from 80 MHz) and an architecture that pipelines instructions, executing an average of nearly one instruction per clock cycle (approximately a ten-fold increase).

    Anyone play with this thing? Anyone know what the current status is on the upgrade?
    In conversation Friday, 04-May-2018 04:26:14 EDT from social.heldscal.la permalink
    1. clacke (clacke@social.heldscal.la)'s status on Friday, 04-May-2018 04:30:25 EDT clacke clacke
      in reply to
      > Parallax endeavors to supply Propellers as long as we have demand (i.e., foreseeable future, a minimum 20 to 25 years). As an example of our commitment, Parallax still manufactures the BASIC Stamp I and it was designed over 20 years ago.

      Nice.

      https://www.parallax.com/product/p8x32a-d40
      In conversation Friday, 04-May-2018 04:30:25 EDT from social.heldscal.la permalink
      1. clacke (clacke@social.heldscal.la)'s status on Friday, 04-May-2018 04:34:33 EDT clacke clacke
        in reply to
        Apparently the Propeller II, Propeller 2 or P2 is a thing, but not yet in ASIC form:

        https://forums.parallax.com/categories/propeller-2-multicore-microcontroller

        People are posting about things they are doing with FPGA implementations.
        In conversation Friday, 04-May-2018 04:34:33 EDT from social.heldscal.la permalink

        Attachments

        1. File without filename could not get a thumbnail source.
          Propeller 2
          from Parallax Forums
          Primary purpose is for early adopters of Propeller 2 who run the core in FPGAs, for the creation of programming tools, and for documentation development.
        1. clacke (clacke@social.heldscal.la)'s status on Friday, 04-May-2018 04:36:39 EDT clacke clacke
          in reply to
          Also, P2 is not open hardware.

          > I think we will open-source the design, but probably not for a few years.

          https://forums.parallax.com/discussion/168368/is-p2-open-source-and-business-considerations
          In conversation Friday, 04-May-2018 04:36:39 EDT from social.heldscal.la permalink

          Attachments

          1. File without filename could not get a thumbnail source.
            Is P2 Open-source? (and business considerations)
            from Parallax Forums
            I keep finding conflicting answers on this...
          1. clacke (clacke@social.heldscal.la)'s status on Friday, 04-May-2018 04:47:12 EDT clacke clacke
            in reply to
            Here's another nice rabbit hole, long discussion of the merits of RISC-V vs P2, and a link to a size-optimized RISC-V 32 implementation:

            https://forums.parallax.com/discussion/166409/risc-v

            https://github.com/cliffordwolf/picorv32
            In conversation Friday, 04-May-2018 04:47:12 EDT from social.heldscal.la permalink

            Attachments

            1. File without filename could not get a thumbnail source.
              RISC V ?
              from Parallax Forums
              Q: What's the quickest way to get GCC working for the P2 ? A: Drop a RISC V processor core in there.
            2. Invalid filename.
              cliffordwolf/picorv32
              from GitHub
              picorv32 - PicoRV32 - A Size-Optimized RISC-V CPU
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