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Type: Posts; User: majinga

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  1. Replies
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    @demonseed Sorry, I didn't take any picture when...

    @demonseed
    Sorry, I didn't take any picture when i repaired mine. Once the tray completely removed, is not so easy to put it back in the correct way. I remember when i fixed mine, i made several...
  2. No. When an MD game use the pad, the game itself...

    No. When an MD game use the pad, the game itself must control the state of the pin.
    It must work in a way like this:

    The game set the pin HIGH, then he read the values of the B and C buttons,...
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    Check the belt

    Check the belt
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    The helix screw is engaged only on the last part...

    The helix screw is engaged only on the last part of the movement, when the tray is totally in.
    Is not easy to move it by hand. Most of the time it appear to be very hard. Or the tray seem to be...
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    Did you tried to replace the BIOS?

    Did you tried to replace the BIOS?
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    Wow, I don't recall all this stuff. I always just...

    Wow, I don't recall all this stuff. I always just burned them
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    That's odd. I never seen a tv which don't let you...

    That's odd. I never seen a tv which don't let you to force the aspect ratio.
    Check the scart, to allow the TV to be auto set in 4:3 you need to feed about 12v on the scart PIN 8.

    Most of the time...
  8. With the fix you will be able to do the IGR in...

    With the fix you will be able to do the IGR in SMS mode, by holding B+C+DOWN for few seconds.
  9. Sensing the pin 7 make the fix available for...

    Sensing the pin 7 make the fix available for everyone who already have the mod, without the need to solder anything else.
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    No, still not able to see the attachment. Some...

    No, still not able to see the attachment.

    Some progress in the repair?
  11. At the moment the plan is to check the value on...

    At the moment the plan is to check the value on pin 7, if is stuck high then the MD is in SMS mode.

    Allow the micro to control the pin in such situation is not so easy. You can't just feed a...
  12. This is exactly what the SMS++ do. On the MD++...

    This is exactly what the SMS++ do. On the MD++ the micro is already capable to read the 3/6 pad buttons. This is easy.
    The complicated part here is to allow the micro to handle the pad only when the...
  13. Here some info about how the 6 buttons pad work:...

    Here some info about how the 6 buttons pad work:
    https://retroramblings.net/?p=835
    https://github.com/jonthysell/SegaController/wiki/How-To-Read-Sega-Controllers
  14. PIN 7 Is not suppose to stay fixed at one level,...

    PIN 7 Is not suppose to stay fixed at one level, vcc or ground. To allow the pad to work in 3 or 6 button mode PIN 7 must act like a clock. It continuously go high and low.
  15. It can but only in the menu. Once the game is...

    It can but only in the menu. Once the game is loaded it's up to the game to handle the pad.
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    Again, no attachment. You must melt the solder...

    Again, no attachment.
    You must melt the solder on each PIN together. Try to bend the single PIN is risky, you can apply too much force on the central pad.
  17. As roce said, this is game-specific. The...

    As roce said, this is game-specific. The everdrive can't do a generic patch for every game.
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    That's because it is a surface mount component....

    That's because it is a surface mount component.
    I would remove it with hot air. Probably is possible to use something like the chip quick to desolder it, but i would not use this method. Or just two...
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    Sorry, it's not clear to me. What do you mean?...

    Sorry, it's not clear to me. What do you mean?
    TR4 is an SMT component. Probably a to-252 or 263. Do you need some advice on how desolder it?
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    Correct. The fuse is gone. TR4 doesn't look...

    Correct. The fuse is gone.

    TR4 doesn't look good to me. I will replace it.
  21. From what i read, he feed the clock signal to the...

    From what i read, he feed the clock signal to the pad. For the mod on the SMS you have to cut the traces from the db9 connector. The micro take care to send back to the SMS the signals of the...
  22. I don't think there is a simple solution for...

    I don't think there is a simple solution for this. You neeed to feed the clock signal to the pad to get the start button. But only in the SMS mode. In the normal MD mode you must allow the clock from...
  23. No. At the moment the problem is that the micro...

    No. At the moment the problem is that the micro is not sending any reset sigal. Because It is not getting the right buttons combo.
    The fix will allow to use a different buttons combo in the SMS mode...
  24. The only way to fix this is change how the micro...

    The only way to fix this is change how the micro operate. I was thinking about an easy solution. Let me talk of this with SukkoPera, I'm sure we can arrange something.
  25. I suspect this. The MD pads are back compatible...

    I suspect this. The MD pads are back compatible with the SMS, same pinout. SEGA managed to have more buttons by adding a pulse singal, the pad send a different set of buttons at every rise or fall of...
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