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Notices by Foone🏳️‍⚧️ (foone@digipres.club), page 3

  1. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:30 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️

    So here's another blurry navigation-picture for the other side of the PCB. The interesting thing here is that they've got the keyboard on a separate PCB.

    In conversation Saturday, 03-Jun-2023 01:10:30 UTC from digipres.club permalink

    Attachments


    1. https://digipres.club/system/media_attachments/files/110/477/391/714/500/138/original/972fb0930e7cc51f.png
  2. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:26 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️

    The last interesting thing about the top of the PCB is that there's another speaker, labeled SP1.
    There's two stereo speakers as well, so I suspect this is just used for PC Speaker, and was easier than merging the audio in with those other speakers

    In conversation Saturday, 03-Jun-2023 01:10:26 UTC from digipres.club permalink

    Attachments


    1. https://digipres.club/system/media_attachments/files/110/477/388/985/240/473/original/40c90b5989eba0e8.png
  3. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:24 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️

    It's a 60 pin connector. 8-bit ISA is 62 pins, 16-bit ISA is 98 pins.

    So if they just merged some grounds, 60-pins is totally doable.

    In conversation Saturday, 03-Jun-2023 01:10:24 UTC from digipres.club permalink
  4. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:22 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    Games included:
    Doom, Wolf3d, XianJian QiXia Zhuan (aka Chinese Paladin), Tyrian, Raptor: Call of the Shadows, and Uncharted Waters: New Horizons
    Daikoukai Jidai II

    In conversation Saturday, 03-Jun-2023 01:10:22 UTC from digipres.club permalink
  5. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:22 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️

    Storage is on a 2 gigabyte CF card. It's got Dos 7.1, Windows 95, and a few games pre-installed on it, plus a driver for the CH375 USB storage chip

    In conversation Saturday, 03-Jun-2023 01:10:22 UTC from digipres.club permalink
  6. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:18 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️

    So over by the USB port, we've got a CH375B.
    This is an 8-bit IO chip for USB, specifically for storage.
    (it's also an 8051-based core! there's always an 8051)

    In conversation Saturday, 03-Jun-2023 01:10:18 UTC from digipres.club permalink

    Attachments


    1. https://digipres.club/system/media_attachments/files/110/477/395/253/303/239/original/12b40e27dea87813.png
  7. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:15 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    There's three 74HC139s, which are dual 2-to-4 line decoders.

    This maybe is used for wiring up one of the expansion ports to the ISA bus?

    In conversation Saturday, 03-Jun-2023 01:10:15 UTC from digipres.club permalink
  8. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:14 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    A YAC512-M. This is a DAC used by the OPL3 to create the analog output of the audio chip.

    In conversation Saturday, 03-Jun-2023 01:10:14 UTC from digipres.club permalink
  9. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:12 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    A PAM8403 three-watt class-D stereo audio amplifier.

    In conversation Saturday, 03-Jun-2023 01:10:12 UTC from digipres.club permalink
  10. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:10 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    Assorted power regulation/charging circuitry that I'm not going to go into.

    In conversation Saturday, 03-Jun-2023 01:10:10 UTC from digipres.club permalink
  11. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:09 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    though I do want to show off this amazing bodge job.

    In conversation Saturday, 03-Jun-2023 01:10:09 UTC from digipres.club permalink
  12. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:07 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    So the keyboard PCB is also the display converter PCB. It stars a Realtek RTD2660, which is a standard video controller. It takes in analog video and drives LVDS displays with it. It's an all-in-one chip that's used on a bunch of cheap monitors, and it's also an 8051!

    In conversation Saturday, 03-Jun-2023 01:10:07 UTC from digipres.club permalink
  13. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:05 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    Next to it we've got a P25Q40H half-megabyte serial flash chip. This is presumably used to store configuration info for the RTD2660.

    In conversation Saturday, 03-Jun-2023 01:10:05 UTC from digipres.club permalink
  14. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:03 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    The other chip on the keyboard/video board is an HM82C42. I can't find any info on this specific version, but it's almost certainly an Intel MCS-48 acting as a PS/2 keyboard controller.

    In conversation Saturday, 03-Jun-2023 01:10:03 UTC from digipres.club permalink
  15. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:10:01 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    The keyboard is a rubber membrane onto the PCB, like a remote control. It's functional but feels pretty crap.

    In conversation Saturday, 03-Jun-2023 01:10:01 UTC from digipres.club permalink
  16. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:09:58 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to

    that large connector on the side is called "ISA" on the PCB.

    In conversation Saturday, 03-Jun-2023 01:09:58 UTC from digipres.club permalink
  17. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:09:55 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️

    The other connector is 12 pins:
    This one is PS/2 and VGA. An adapter is included with the device.

    In conversation Saturday, 03-Jun-2023 01:09:55 UTC from digipres.club permalink
  18. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Saturday, 03-Jun-2023 01:09:47 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️

    there's also the SBVGM audio player, which includes "Funky Stars" and the whole soundtrack of PlanetX3

    In conversation Saturday, 03-Jun-2023 01:09:47 UTC from digipres.club permalink
  19. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Monday, 15-May-2023 15:47:10 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️
    in reply to
    • Anatoly Shashkin💾
    • Matt

    @forelioned @dosnostalgic I heard about it. It's a scam but sadly I don't have the money to find out exactly what kind of scam it is at the moment

    In conversation Monday, 15-May-2023 15:47:10 UTC from digipres.club permalink
  20. Foone🏳️‍⚧️ (foone@digipres.club)'s status on Thursday, 04-May-2023 00:39:26 UTC Foone🏳️‍⚧️ Foone🏳️‍⚧️

    TIL Jazz Jackrabbit cheats at background parallax by using palette remapping:

    https://retrocomputing.stackexchange.com/a/21736

    In conversation Thursday, 04-May-2023 00:39:26 UTC from digipres.club permalink
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    Foone🏳️‍⚧️

    Foone🏳️‍⚧️

    Hardware / software necromancer, collector of Weird Stuff, maker of Death Generators. (she/they🏳️‍⚧️)

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