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Type: Posts; User: Ralf K.

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    Together with a friend we build a Tennsy based...

    Together with a friend we build a Tennsy based replacement PCB that fits without changes into the original arcade cabinet. The Tennsy runs an custom emulation that is able to drive the vector monitor...
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    Pin headers are fine. I would not insist on...

    Pin headers are fine. I would not insist on anything like an M2 connector for a processor module.



    With a processor module I meant a Teensy striped*down to the bare minimum to allow it to...
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    I might be wrong here but from my point of view a...

    I might be wrong here but from my point of view a big factor will be the pricing. As an M.2.processor only module (like it's done with MicroMod) will not work without* an carrier it should be cheaper...
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    I know it's up to SparkFun to talk about this....

    I know it's up to SparkFun to talk about this. But are there any rumours about the price they will ask for a Tennsy processor board? So far they sell most of them for $14.95 but as Teensy based board...
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    Yes, but as it updated quite often I am...

    Yes, but as it updated quite often I am hesitate*to use it as it will wear down and cannot easily replaced. After some more thinking about it I might just move the CPU emulation from the main loop to...
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    Aasync SD card operations?

    For a project we are using a Teensy 4.1 together with a custom PCB to replace the original PCB set in an old arcade game from 1981. As it is a vector based game the custom PCB contains 2 SPI DACs for...
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    Thanks, defragster, for the hint. Changing the...

    Thanks, defragster, for the hint. Changing the USB device at runtime is more of a long term idea but it is good to know that there might be a way to do it.
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    Thank you very much both of you. At the moment I...

    Thank you very much both of you. At the moment I am fine with knowing that it is possible as I need to implement*another part of the project first.
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    USB Device: Serial + MTP possible?

    In the menu to select the function of the USB device there are many options that include an additional serial function. Would this be possible with a MTP device, too?

    Bonus question: Can the...
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    No it's not a Fairlight. I didn't even know what...

    No it's not a Fairlight. I didn't even know what it was without looking it up. It's related to an old second generation game console.

    FlexIO 3 has 20 bitd in continuous order mapped to the pins....
  11. Teensy 4.1 GPIO direction switching behavior

    Disclaimer: I am more a software than a hardware guy therefore*this question might be really stupid. I am already read through section 12.4 of the references multiple times but I could not find the...
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    Teensy 4.1 as slave on another CPU bus

    For a project we like to connect a Teensy 4.1 to an old 6809 CPU (1.5 MHz). The Teensy should process read and write request from the 6809 CPU based on the value of the 16 bit address bus. Beside of...
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