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Type: Posts; User: LambdaMikel

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  1. Replies
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    Oh, nice.. I'd like to get one of these too. But...

    Oh, nice.. I'd like to get one of these too. But hard to find.
  2. Pitch Control is actually also a feature of the...

    Pitch Control is actually also a feature of the SC-01

    https://downloads.reactivemicro.com/Electronics/Speech/SC-01%20Data%20Sheet%20v2.pdf

    But the data sheet is not very informative on what...
  3. VS-100 Voice Synthesizer - Pitch Control Info

    Guys, for my crude re-implementation / emulation of the VS-100 I am still missing some info regarding the pitch control feature. I have all the manuals for the VS-100. The manual explains that bits 6...
  4. Poll: Project update: TRS Voice Synthesizer emulation,...

    Project update: TRS Voice Synthesizer emulation, first steps:

    https://youtu.be/rNow4joSyGI

    Still some fine tuning required, but the overall scheme of things is working.

    Next steps: refine...
  5. Poll: Yes, little on/off switch for speaker I am OK...

    Yes, little on/off switch for speaker I am OK with. Have to be mindful of the costs... I need to change the audio socket. Currently, works with stereo plug only. Mono plug doesn't get through. Most...
  6. Poll: Some more pics. 59805 59806 59807

    Some more pics.
    59805
    59806
    59807
  7. Poll: Right, AFAIK, the Hawking Voice Synth at least...

    Right, AFAIK, the Hawking Voice Synth at least has some overlap with DECtalk, which is what you are hearing here.

    Model 3 / 4... just read the IO port description. It is different from Model 1....
  8. Poll: Project Update: The PCBs arrived today - and...

    Project Update:

    The PCBs arrived today - and worked out of the box! Pictures attached. The EI works without problems from the edge connector pass through.

    There are still a couple of things...
  9. Poll: Thanks! I am planning to make the final product...

    Thanks! I am planning to make the final product available at some point. From a hardware point of view, the product is almost finished. I still want to add the amplifier and speaker. Then people can...
  10. Poll: A first version is working - here is a short demo...

    A first version is working - here is a short demo video showing it in action:

    https://youtu.be/NUp0_M16cys?list=PLvdXKcHrGqhcJzzogLMI-J4Or-ap6UVSY

    Next, I am going to work on implementing the...
  11. Replies
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    AFAIK, Ian Mavric was offering these at some...

    AFAIK, Ian Mavric was offering these at some point. A modern replacement.
  12. That being said, the FreHD is awesome and highly...

    That being said, the FreHD is awesome and highly recommended for anybody that loves their TRS80.
  13. Before going with HD emulation, I suggest...

    Before going with HD emulation, I suggest starting with a HxC / Gotek (Flashfloppy or HxC).
    HD emulation can come later (and is a lot more costly).
  14. Poll: Here is a small update - progress report:...

    Here is a small update - progress report: admittedly, it was kind of a bold move to not do any bread boarding this time, and go to PCB production right away. Would my design actually work? Now, 3...
  15. Poll: ... and the Podcast guys are also calling...

    ... and the Podcast guys are also calling themselves "TrashTalkers".
    @pski / Pete, would you have an issue if we used the name for the speech synth?
  16. Poll: :D OK, it seems that "TashTalker-80" - which...

    :D OK, it seems that "TashTalker-80" - which obviously should read TrashTalker-80 - got a good number of votes, so why not!
  17. Excellent. So after all, the "mapper" idea might...

    Excellent. So after all, the "mapper" idea might have a chance. Timing will be different anyhow, and the additional instructions for the mapping / emulation of the original IN / OUTs will make a bit...
  18. My little GT64 connector box works *without* the...

    My little GT64 connector box works *without* the LM1881 sync splitter.

    I am grabbing the SYNC, LUMA, and power lines from the board, before they go into the video mixer transistors, and all the...
  19. Good idea... now we only need to figure out how...

    Good idea... now we only need to figure out how to distinguish data from op-codes on the databus... I guess that will require some "stateful model" of the Z80 in the remapper... hope this is not...
  20. Not necessarily if you implement the "opcode...

    Not necessarily if you implement the "opcode remapping" idea.
  21. I second that... 100% compatibility should be the...

    I second that... 100% compatibility should be the goal, otherwise one could argue to put the whole thing into an FPGA. There must be some benefit to using an (e)Z80.

    In general, it is surprising...
  22. Crayz idea: how about adding an op-code "remapper...

    Crayz idea: how about adding an op-code "remapper / translator" into the databus... whenever the eZ80 gets an IN-OUT op code from RAM, before it gets the op code, the remapper rewrites the OP code. ...
  23. Poll: That clashes with the Podcast though...

    That clashes with the Podcast though...
  24. Replies
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    I'd be interested in Model 1 stuff... Alps...

    I'd be interested in Model 1 stuff... Alps keyboard, case, motherboards, power supplies, ... voice synthesizer.
  25. Poll: First PCB version got sent to OshPark today for a...

    First PCB version got sent to OshPark today for a first run.
    The design uses:
    - 2x GAL22V10
    - ATmega 644 @ 20 MHz AVR
    - LM741 Opamp for mixing (TRS audio output + speech synth output)
    - Text...
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