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The Apple II Source Code for the LOGO Language Found

posted by martyb on Sunday October 07 2018, @01:14PM   Printer-friendly
from the have-you-ever-programmed-a-6502? dept.

Arthur T Knackerbracket has found the following story:

Adafruit visited the history of the LOGO "turtle graphics" language not long ago.

Now on Twitter, folks have found the source code for the LOGO program used on Apple II computers. Source on GitHub.

It turns out that the program was written on a DEC PDP-10 minicomputer running the Incompatible Timesharing System (ITS).

I'd take it that the code is in 6502 assembly and the program works the whole Apple II memory map for functionality. Did ITS have a 6502 cross-compiler or did the MIDAS program have separate target environments?

Very interesting programming archaeology – see the source code yourself along with the full PDP-10 ITS image still maintained today.

-- submitted from IRC

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  • (Score: 3, Insightful) by SomeGuy on Sunday October 07 2018, @07:48PM (3 children)

    by SomeGuy (5632) on Sunday October 07 2018, @07:48PM (#745610)

    You forget, people get paid for mentioning Twitter(R)(TM). Don't you watch the TV news? Every major event is announced on Twitter(R)(TM) and they are proud to provide the detail of precisely and exactly where it was announced - on Twitter(R)(TM)! Every major scandal revolves around saying something baaad on Twitter(R)(TM). People go to jail for making Terroristic Threats on Twitter(R)(TM). If you mention something on your own personal web site, it isn't official - you have to say it Twitter(R)(TM)! The fucking president of the United States of Fucking America Tweets everything he does on fucking Twitter(R)(TM). IF YOU DON'T USE TWITTER(R)(TM) THEN YOU ARE NO ONE!

    And don't forget to download our free news app/malware and follow us on Twitter(R)(TM)!

    Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)! Twitter(R)(TM)!

    Starting Score:    1  point
    Moderation   +1  
       Insightful=1, Total=1
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    Karma-Bonus Modifier   +1  
    Total Score:   3  

  • (Score: 2) by requerdanos on Sunday October 07 2018, @09:12PM (2 children)

    by requerdanos (5997) Subscriber Badge on Sunday October 07 2018, @09:12PM (#745637) Journal

    You forget, people get paid for mentioning Twitter(R)(TM). Don't you watch the TV news?

    Actually, like many "cord-cutters", I mostly don't watch the TV news. I guess my non-understanding of the Twitter-apropos-of-nothing gave it away, huh?

    Is it like "I'm the secretary of state, brought to you by Carl's Jr" [freworld.info]?

    • (Score: 0) by Anonymous Coward on Monday October 08 2018, @06:03AM (1 child)

      by Anonymous Coward on Monday October 08 2018, @06:03AM (#745830)

      What do you mean "cord cutters"? You can get the news off the air. Don't need cable, coax or copper to get TV. Do you get your news off the interwebby and only look at 4chan?

      • (Score: 0) by Anonymous Coward on Monday October 08 2018, @01:01PM

        by Anonymous Coward on Monday October 08 2018, @01:01PM (#745937)

        And how do you get the news from the air into your TV? Right, through an antenna. And how do you connect that antenna to your TV?