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Thread: Tapuino, the $20 C64 Tape Emulator

  1. #101
    sweetlilmre's Avatar
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    Quote Originally Posted by inagy View Post
    (I can't paste any links since they will trigger moderation, so posting again.)

    Quote Originally Posted by stephenfalken View Post
    Hi inagy! I spoke to you via the comments on my YouTube video. I look forward to seeing your Tapuino built and working!
    Thanks! I've just ordered the parts on eBay. Hopefully they will arrive soon.
    Awesome news!

    Quote Originally Posted by inagy View Post
    Quote Originally Posted by stephenfalken View Post
    I seem to remember reading somewhere that wiring the output from a datasette to the input of another wouldn't work without inverting, although I may be wrong!
    I think you are right. On c64tapes (dot) org wiki you can read the following in the analyzing_loaders article:
    NOTE about the Hardware: a thing to point out is that during a SAVE operation, on the WRITE line of the Datasette port, “pulse length” is intended as the time distance between two consecutive low-high transitions. During a LOAD operation, pulse length is the time distance between two consecutive high-low transitions, since the 6526 READ line triggers on negative edges. In other words, the signal from C2N to C64 is the negative version of the one from C64 to C2N. That's why tape duplication hardware consists in an inverter (with a bjt and 2 resistors used in a common emitter scheme): the signal from the C2N performing LOAD, intended for being sent to C64, needs being inverted before being sent to the C2N doing the SAVE operation.
    Ah that would explain the circuit in the picture, I was wondering what the transistor was for.

    Quote Originally Posted by stephenfalken View Post
    It would also be a cool idea to add the ability to read cassettes into tap files directly on the tapuino, although at this point we may be asking too much from the little Atmega chip lol

    Saving from the C64's RAM to the SD card already works. I don't see why it would not work when the deck sends the signal not the C64. It's the same thing if we consider the protocol, it's just a different source.
    Yes this would definately be possible. I think that building an adapater from vero board and a Datasette connector might work, the track size looks like it might fit.
    Then we would be in business.

    As far as the code goes I've got the repeat functionality in but that has caused some other unexpected changes that I have to work through in the display code.
    I'm going to change all the timing based stuff to use the new system timer that is in and that should fix the issues.

  2. #102
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    New build is up with repeat. Please test it out
    Play with the timing values in config.h if the repeat or ticker is too fast or slow.
    Make a backup of your current build, I haven't tested this out too much.

    Enjoy
    -(e)

  3. #103
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    I've started looking up the components in local stores.
    Am i correct that the buttons have to be momentary switches? So these are not on/off switches which are locking into either position by pushing them once; contact is only made while you are holding them.
    Also i will go with the mountable buttons stephenfalken is using. As is see these has only two legs instead of 6 which are mentioned in Peter's build. Is this correct?

  4. #104
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    Yes, the switches / buttons must be momentary. The ones I used have 4 legs, but that is just for mounting purposes.

    Sent from my Nexus 5 using Tapatalk
    Build a Tapuino!
    http://www.amibay.com/showthread.php?63166-Tapuino-the-20-C64-Tape-Emulator
    http://www.sweetlilmre.com

  5. #105
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    Stephen: had a chance to test yet? I'm going to work on being able to name the save files next.

    Sent from my Nexus 5 using Tapatalk
    Build a Tapuino!
    http://www.amibay.com/showthread.php?63166-Tapuino-the-20-C64-Tape-Emulator
    http://www.sweetlilmre.com

  6. #106
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    Hi mate I haven't had chance yet but might get round to it tomorrow! Been a bit busy.

    Look forward to tryin it though!


    Quote Originally Posted by sweetlilmre View Post
    Stephen: had a chance to test yet? I'm going to work on being able to name the save files next.

    Sent from my Nexus 5 using Tapatalk


    Sent from my Galaxy S4 using Tapatalk 2


  7. #107
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    Good stuff ☺I've been speaking to a mate of mine and he might be able to help me build one of those tape to tape copier boards. I'll let you know how that goes. If anyone reading this has one for sale I'd love to buy it...

    Sent from my Nexus 5 using Tapatalk
    Build a Tapuino!
    http://www.amibay.com/showthread.php?63166-Tapuino-the-20-C64-Tape-Emulator
    http://www.sweetlilmre.com

  8. #108
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    Sounds good. I was reading this excellent information here and was thinking about the possibility of adding a datassette port to the Tapuino:

    http://sleepingelephant.com/denial/w...e_modification

    Regards


  9. #109
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    I've seen that article and instead of doing all the mods, if you have that form of Datasette, we could wire an alternative connector for the Tapuino that matches that pin out and then add conversion in software.

    Sent from my Nexus 5 using Tapatalk
    Build a Tapuino!
    http://www.amibay.com/showthread.php?63166-Tapuino-the-20-C64-Tape-Emulator
    http://www.sweetlilmre.com

  10. #110
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    Hi, I've been thinking about this some more and if I can build a male connector out of copper board then we should be able to plug the Tapuino into the C64 with a dual cable and plug another datasette into the Tapuino. I'll try and prototype this, only problem is that I don't have any tapes to test with! ☺

    Sent from my Nexus 5 using Tapatalk
    Build a Tapuino!
    http://www.amibay.com/showthread.php?63166-Tapuino-the-20-C64-Tape-Emulator
    http://www.sweetlilmre.com

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