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Thread: CYGN-B

  1. #951
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    Mar 2010
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    Default

    lasermaster1977: Good hint. I'll consider that. I'm not sure about the linear DC supplies but yes, probably, given the weight.

    Roj: You are right, I should speak of no one's indebtedness but my own. Please chalk my comment up as hyperbole. The gentleman from whom I received the quoted communication is one of the renowned choreographers who directed the production of many of the older shows including Starship, and who also was a member of the team that developed the sage system. All the Laserium people I have spoken with who are not already here on PL have indicated that they would prefer not to be named in these forums, though all have been wonderful for sharing their time and knowledge.

  2. #952
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    Speaking of monsters, I forgot to post evidence of this coincidence. A few weeks ago I was readying Mercury Blues for export, and a real one appeared briefly a few doors down.
    Attached Thumbnails Attached Thumbnails mercury_coincidence.jpg  


  3. #953
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    Sep 2014
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    Default DOGN related update

    I've had the privilege of doing some more 'digging' into the dark recesses of Laserium's DOGN interface that Greg shared with me. I started this back in Feb. 2022 but soon got sidetracked about 3 months later, but returned to the hunt recently. One thing that caught my eye was a 234 byte Hex listing described in the DOGN documentation as the "World". This block of 8-bit Bytes was probably at some point stored on the 2nd of two 2K ROMs installed on the DOGN (actually, the DOGN card had up to four 2K ROM or EPROM chips installed with a SPDT switch that selected either of two ROM chips at a time.) Greg has more familiarization with these ROM sets than I do

    I knew from the side-notes of the DOGN documentation of this Hex listing that it was the North American continent plus Alaska and a bit of Mexico down to the Yucatan peninsula.
    Last night I finally typed in the 234 X,Y Hex values into my Apple IIe Windows emulator memory and saved this block of memory as an Apple binary file in the same manner as I did with my own laser image files. I loaded a BASIC program I wrote years ago to plot an image's XY points on the Apple II/IIe high resolution graphics screen, loaded the "World" binary image file and plotted it.

    When the "World" point plotting first appeared on the screen, the continent was split in half with some of it on the far left side of the screen, the middle of the screen blank and the rest of the "World on the far right side of the screen...and upside down. I knew the likely reason for this anomaly and adjusted my program to deal with 2's complement values.

    And that did the trick as shown here, an emulation of the Apple IIe monochrome screen:

    Click image for larger version. 

Name:	World 2-Comp.jpg 
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    ________________________________
    Everything depends on everything else

  4. #954
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    Quote Originally Posted by lasermaster1977 View Post
    When the "World" point plotting first appeared on the screen, the continent was split in half with some of it on the far left side of the screen, the middle of the screen blank and the rest of the "World on the far right side of the screen...and upside down. I knew the likely reason for this anomaly and adjusted my program to deal with 2's complement values.
    A round of applause, everyone please!

  5. #955
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    I suggest what is needed is a utility which either of us could write for the bela that will contain the points data from the ROM files as arrays. The utility can repeatedly loop through the points, converting two's complement to decimal, repeating each point a certain number of times to slow the pps down, and output a stereo wav file which can then be used as an image source in the 6b Emulator.
    Last edited by Greg; 08-02-2024 at 22:34.

  6. #956
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    Quote Originally Posted by Greg View Post
    I suggest what is needed is a utility which either of us could write for the bela that will contain the points data from the ROM files as arrays. The utility can repeatedly loop through the points, converting two's complement to decimal, repeating each point a certain number of times to slow the pps down, and output a stereo wav file which can then be used as an image source in the 6b Emulator.
    Nice! Might I suggest, converting two complement values to the bela audio wav format values whereby there is an intra-XY point delay that achieves the desired image framerate. We're probably saying the same thing.
    ________________________________
    Everything depends on everything else

  7. #957
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    Courtesy of lasermaster1977 and his AppleIIe wielding prowess, we have a visualization of some points data recovered from the DOGN EPROMs from The Police show. The imagery, however, seems unrelated to a The Police show. lasermaster1977 succeeded in locating the appearance of the rainbow cadenza graphic at the end of this video:

    https://www.youtube.com/watch?v=-Jc2RQIWh0I
    Attached Thumbnails Attached Thumbnails DrumKit.jpg  

    POLICEPTS-1.jpg  

    Bottle.jpg  

    RainbowCadenza-1.jpg  


  8. #958
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    Tucson, AZ
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    Quote Originally Posted by Greg View Post
    Courtesy of lasermaster1977 and his AppleIIe wielding prowess, we have a visualization of some points data recovered from the DOGN EPROMs from The Police show. The imagery, however, seems unrelated to a The Police show. lasermaster1977 succeeded in locating the appearance of the rainbow cadenza graphic at the end of this video:

    https://www.youtube.com/watch?v=-Jc2RQIWh0I
    Well done, Lasermaster1977!
    👏👏👏👏👏👏👏👏
    Especially considering that you had never actually worked @ LII, yet are still able to reverse engineer their gear. 🤯
    Wouldn't the 3rd image be from 'Message in a Bottle"? 🤔

    😎
    What goes around, comes around;
    We project what others reflect.

  9. #959
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    Default A tiny bit more

    Thanks Roj.

    Here is the Rainbow Cadenza image plot with the missing end segment of 'NZA' restored to its rightful place.

    Click image for larger version. 

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    For some odd reason this end segment was at the beginning of one 2K ROM that immediately preceded a string of ASCII symbol characters shown previously and here again:

    Click image for larger version. 

Name:	POLICEPTS-1.jpg 
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ID:	61367


    I still working on unscrambling a set of images that was on one of the Pink Floyd 2K ROMs.

    I just sent Greg text files of each of these image's XY point list, with hopes of soon seeing them rendered in laser scans.
    ________________________________
    Everything depends on everything else

  10. #960
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    Nov 2021
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    Quote Originally Posted by lasermaster1977 View Post
    Thanks Roj.
    You're welcome!
    Hey, I found that bottle graphic, that I thought was from 'Message in the Bottle.'
    😎
    What goes around, comes around;
    We project what others reflect.

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