Prop2 FPGA files!!! - Updated 2 June 2018 - Final Version 32i

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Comments

  • cgracey wrote: »
    Evanh, here's the spoiler: the ASIC tools optimize the logic cell placement and routing only to meet the timing goal, so that signals with plenty of slack get routed around the hot spots, loosing their slack, while the signals needing speed get the prime placement and shortest routes. In the end, hundreds of thousands of paths are stacked against the timing wall, forming a cliff, where the chip fails systemically if the clock period becomes too short. So, while in theory some things take less time than others, the implementation is a blob of nearly identically-timed paths that affords no possibility of speed-up via selective clock cycle shortening. When you hit the speed limit, everything fails at once.
    I know, I didn't show the gap as a speed-up feature. It was just indicative of where the propagations end is all. The propagations must complete ahead of flop setup timing requirements.
    "... peers into the actual workings of a quantum jump for the first time. The results
    reveal a surprising finding that contradicts Danish physicist Niels Bohr's established view
    —the jumps are neither abrupt nor as random as previously thought."
  • Roy Eltham wrote: »
    @cgracey aren't the new chips due soon?

    The new wafers came out of the fab on the 13th and are now being packaged into 10 glob tops. The rest of the dice will be packaged in the real Amkor ePad package, but they won't be shipped for several weeks.

    ON Semi has been promising delivery of the 10 glob tops on August 1, but they always under-promise and over-deliver, so I'm thinking we may have chips sometime next week. Man, I really hope the design is okay. If it works as planned, it's going to be great. We'll have a really nice chip.
  • Fingers doubly crossed. With all the work you've done Chip, it needs to be a rewarded success!

    I am off to the UK for 4 weeks, so I am taking my ES board with me to work on while there B)
    My Prop boards: P8XBlade2, RamBlade, CpuBlade, TriBlade
    Prop OS (also see Sphinx, PropDos, PropCmd, Spinix)
    Website: www.clusos.com
    Prop Tools (Index) , Emulators (Index) , ZiCog (Z80)
  • Cluso99 wrote: »
    Fingers doubly crossed. With all the work you've done Chip, it needs to be a rewarded success!

    I am off to the UK for 4 weeks, so I am taking my ES board with me to work on while there B)

    We've all done a lot of work on this. This chip is a distillation of a lot of fantastic ideas that people have had over the last 13 years. We packed at least 15 pounds into the 5 pound bag.
  • cgracey wrote: »
    Cluso99 wrote: »
    Fingers doubly crossed. With all the work you've done Chip, it needs to be a rewarded success!

    I am off to the UK for 4 weeks, so I am taking my ES board with me to work on while there B)

    We've all done a lot of work on this. This chip is a distillation of a lot of fantastic ideas that people have had over the last 13 years. We packed at least 15 pounds into the 5 pound bag.

    More like 50 pounds into that 5 pound bag B)
    There is something for everyone in the P2!
    My Prop boards: P8XBlade2, RamBlade, CpuBlade, TriBlade
    Prop OS (also see Sphinx, PropDos, PropCmd, Spinix)
    Website: www.clusos.com
    Prop Tools (Index) , Emulators (Index) , ZiCog (Z80)
  • Excellent news Chip!
    Validation with the 10 glob tops in a couple weeks, then the proper packaged ones in late September or Early October (on the new rev of the eval board) for us! Yay!
  • jmgjmg Posts: 13,784
    cgracey wrote: »
    The new wafers came out of the fab on the 13th and are now being packaged into 10 glob tops. The rest of the dice will be packaged in the real Amkor ePad package, but they won't be shipped for several weeks.

    ON Semi has been promising delivery of the 10 glob tops on August 1, but they always under-promise and over-deliver, so I'm thinking we may have chips sometime next week....

    Have those 10 passed the test program you were working on ? Have OnSemi indicated yields on this run yet ?

  • jmg wrote: »
    cgracey wrote: »
    The new wafers came out of the fab on the 13th and are now being packaged into 10 glob tops. The rest of the dice will be packaged in the real Amkor ePad package, but they won't be shipped for several weeks.

    ON Semi has been promising delivery of the 10 glob tops on August 1, but they always under-promise and over-deliver, so I'm thinking we may have chips sometime next week....

    Have those 10 passed the test program you were working on ? Have OnSemi indicated yields on this run yet ?

    I'm not sure about the test program status for the new silicon. It would be all new files within ON Semi, since the logic was resynthesized.
  • Chip,
    He meant the PASM2 code that you wrote to test things. You indicated that it was for ON Semi to use for testing the chips.
  • Roy Eltham wrote: »
    Chip,
    He meant the PASM2 code that you wrote to test things. You indicated that it was for ON Semi to use for testing the chips.

    Our analog test program is the same, but they must make new digital test programs.
  • Chip,
    This is cool! I finally understand QFRAC and why you've included it! I had the following code working, seemed perfect. Purpose is to scale up the remainder of (clk_freq / asyn_baud) so as to make use of the full 16.6 bit format for clock divider in smartpin asynchronous serial mode.
    		qdiv	##$ffff_ffff, asyn_baud
    


    But there was a small doubt I was missing something. I went to ask you about it, whether it really was as perfect as it seemed and whether you had any recommendations. As I was typing the question, it dawned on me there was this other cordic divide I'd never understood ... QFRAC, so I tried it and blow me down it did the job even better because it didn't need the large constant.
    		qfrac	#1, asyn_baud
    
    Same answer. :)
    "... peers into the actual workings of a quantum jump for the first time. The results
    reveal a surprising finding that contradicts Danish physicist Niels Bohr's established view
    —the jumps are neither abrupt nor as random as previously thought."
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