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Posts posted by Zerosquare

  1. It looks like the explanation is that the number of pins wasn't the same depending on the chip manufacturer:


    The extra pins on each side of the 160-pin version are unconnected, and they don't have a number.


    • Like 1

  2. 8 hours ago, SainT said:

    I have to say that's the weirdest pin numbering I've seen on a chip. It's customary to have either the middle or edge pin be pin 1, not a pin three in from the edge. That's nuts.

    Every time you think you can take something for granted, the Jaguar proves you wrong.

    • Haha 3

  3. A long time ago, I did some tests directly interfacing a PS/2 mouse to the pad port ; PS/2 keyboards work very similarly. The discussion is on pages 2 and 3:

    It basically works, but the issue is that the communication speed is controlled by the mouse/keyboard, so it's not easy to make it work without slowing down the game code. And the delays can vary a lot depending on the device. It may or may not be a realistic solution depending on what you want to achieve.


    You can also use a microcontroller like @Matthias did, which solves this problem. But it's significantly more expensive and more difficult to build, so the audience for your game would be more limited.


    What do you have in mind?

  4. 16 hours ago, thegoldenband said:

    Can someone give me a rundown of which retail games can reasonably be played without a Memory Track?

    If you include games where saving doesn't matter, because you're never going to want to play them a second time after trying them, you can add Highlander to your list.

    • Haha 3

  5. 20 hours ago, SainT said:

    I will sometimes use a fine sandpaper

    The gold plating is only a thin layer, and sandpaper wears it down. It may appear to solve the problem initially, but it also makes the contact less resilient to corrosion, so it's not a good idea.


    There are some special erasers made to clean contacts without damaging them, but the slot in the connector is too narrow to use them. So the best option is probably isopropyl alcohol and a cloth indeed.

    • Like 1

  6. The audio DAC is external. There's also a bit of logic to handle the mute feature. But if you don't get I²S signals out of Jerry, there's definitely something wrong.


    Regarding your chips references, I believe they're the same, but not manufactured by the same company (I think one of them was Toshiba?).

    • Like 1

  7. 1 hour ago, SainT said:

    I've been building new Jag cartridges for a week straight and my sanity is wearing thin. 😬

    Build some Lynx cartridges for a change. I've been told they emit much less toxic fumes 😉

    • Haha 2

  8. 8 hours ago, slx said:

    It would seem that the obstacle of proceeds of a new production of Battlesphere going to charity would be surmountable.

    The charity thing is a red herring, just like the "nobody meets our quality standard" part. The authors' behavior makes it clear they want the supply of their game to remain scarce.


    5 hours ago, phoboz said:

    3. If the source code would be open, it would be even more great (I am not sure from the discussion if other people than me agree, or not?)

    It's a moot point since this is never going to happen. If you read the discussions back in the day, you wouldn't even ask the question.

    • Like 3

  9. 2 hours ago, WilcoL said:

    The boxes will now feature the Atari logo at the front, at first I didn’t want to add it because I was afraid of legal action but I’ve realized that Atari probably doesn’t care.

    Not recommended. The logo and intellectual property rights are all what's left of Atari. You don't want to give their lawyers an easy case against you.

    • Thanks 1
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