Jim 〨 Ursetto

@jim3e8

Just a boy and his alphanumeric pals.

Chicago
Vrijeme pridruživanja: ožujak 2010.

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  1. 31. sij

    again, things that could have been brought to my attention yesterday

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  2. 31. sij

    Spent an hour stepping through Apple II ROM code because simple things like clearing the screen resulted in garbage. Turns out the 6502 had the decimal flag set by accident, which totally breaks everything in the computer.

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  3. proslijedio/la je Tweet
    18. sij

    A Peter Thiel-funded startup is scraping every photo it can find online (3 billion so far) to build a powerful facial recognition app that it’s selling to law enforcement.

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  4. 3. sij
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  5. 17. pro 2019.

    This is all possible because the designers of ProDOS were extremely forward-looking, and created an abstraction layer for storage general enough that 30 years later we can read and write to an image on a laptop over serial and it. just. works.

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  6. 17. pro 2019.

    It dumps me back into the Bitsy Bye file selector, and I tab a couple times to get to S1,D2. Then I navigate to the FR directory and run my forth interpreter STC, and type some simple commands. Carefully, because if I underflow the stack it will crash.

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  7. 17. pro 2019.

    I booted the system off a diskette I created containing ProDOS 2.4.2 (), ADTPro etc. I ran VSDRIVE to make a virtual hard drive available over serial in slot 1, drive 2. This drive image is on my Macbook and I usually access it there via Virtual ][.

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  8. 17. pro 2019.

    Finally got my nascent FORTH interpreter running on real Apple //c hardware using ADTPro’s virtual disk support.

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  9. 13. pro 2019.

    so after patching out the authentication check, behold this incredible work of art

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  10. 13. pro 2019.

    oh my god come on

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  11. 13. pro 2019.

    ... and then it reboots. I was an insufferable child and adult me is paying for it

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  12. 13. pro 2019.

    My late stage Apple "programming" career, when I started just renaming things after myself

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  13. 13. pro 2019.

    CRT still works great. On the plus, and minus, side I can still hear the squealing of the flyback transformer.

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  14. 12. pro 2019.

    But the keyboard desperately needs cleaning. I have the “hairpin switch” (inferior) model, it turns out, but that is not something you notice when you’re 10

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  15. 12. pro 2019.

    Did leave this ancient sticker on the drive door for old times’ sake though

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  16. 12. pro 2019.

    Dusted it out a bit, and also cleaned the drive head with alcohol, although that looked ok too. Most disks so far have read fine, but I was getting errors on a couple — probably bad disks.

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  17. 12. pro 2019.

    Despite being 35 years old and being pounded on for years by 2 kids, the Apple looks really good inside.

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  18. 11. pro 2019.

    holy crap it somehow worked

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  19. 11. pro 2019.

    usb -> rs232 din5 assembled...

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  20. 11. pro 2019.

    done. now to plug this in and hope the magic smoke doesn’t escape

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