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  • Iyonix replacement video card

    From Stuart@Spambin@argonet.co.uk to comp.sys.acorn.hardware on Tue Mar 17 11:30:02 2026
    From Newsgroup: comp.sys.acorn.hardware

    Hi,

    Just wondering if anyone here has replaced the Iyonix video card for one
    with HDMI output
    --
    Stuart Winsor

    Tools With A Mission
    sending tools across the world
    http://www.twam.co.uk/
    --- Synchronet 3.21e-Linux NewsLink 1.2
  • From Theo@theom+news@chiark.greenend.org.uk to comp.sys.acorn.hardware on Tue Mar 17 13:09:35 2026
    From Newsgroup: comp.sys.acorn.hardware

    Stuart <Spambin@argonet.co.uk> wrote:
    Hi,

    Just wondering if anyone here has replaced the Iyonix video card for one
    with HDMI output

    The Iyonix uses specific models of Nvidia PCI (not PCIe) card - the GeForce
    2 MX and FX5500 are mentioned here as working, and I think some other
    GeForce FX-series may too:
    https://stardot.org.uk/forums/viewtopic.php?p=276772

    I don't believe there are any of that era (~2005) which have HDMI ports, but some have DVI and DVI to HDMI is just a passive cable. (ie HDMI monitors support DVI signals on the HDMI port as a backwards compatibility mode)

    What you won't get is audio, which is supported on HDMI but not DVI.

    Theo
    --- Synchronet 3.21e-Linux NewsLink 1.2
  • From Stuart@Spambin@argonet.co.uk to comp.sys.acorn.hardware on Tue Mar 17 15:00:02 2026
    From Newsgroup: comp.sys.acorn.hardware

    In article <ZyA*JsLBA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:
    Stuart <Spambin@argonet.co.uk> wrote:
    Hi,

    Just wondering if anyone here has replaced the Iyonix video card for
    one with HDMI output

    The Iyonix uses specific models of Nvidia PCI (not PCIe) card - the
    GeForce 2 MX and FX5500 are mentioned here as working, and I think some
    other GeForce FX-series may too: https://stardot.org.uk/forums/viewtopic.php?p=276772

    I don't believe there are any of that era (~2005) which have HDMI ports,
    but some have DVI and DVI to HDMI is just a passive cable. (ie HDMI
    monitors support DVI signals on the HDMI port as a backwards
    compatibility mode)

    What you won't get is audio, which is supported on HDMI but not DVI.

    Thanks Theo, not terribly worried about sound. I think somewhere I have a
    VGA to HDMI adaptor, but I was trying to avoid additional hardware
    external to the machine.
    --
    Stuart Winsor

    Tools With A Mission
    sending tools across the world
    http://www.twam.co.uk/
    --- Synchronet 3.21e-Linux NewsLink 1.2
  • From Theo@theom+news@chiark.greenend.org.uk to comp.sys.acorn.hardware on Thu Mar 19 12:05:03 2026
    From Newsgroup: comp.sys.acorn.hardware

    Stuart <Spambin@argonet.co.uk> wrote:
    In article <ZyA*JsLBA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:
    Stuart <Spambin@argonet.co.uk> wrote:
    Hi,

    Just wondering if anyone here has replaced the Iyonix video card for
    one with HDMI output

    The Iyonix uses specific models of Nvidia PCI (not PCIe) card - the
    GeForce 2 MX and FX5500 are mentioned here as working, and I think some other GeForce FX-series may too: https://stardot.org.uk/forums/viewtopic.php?p=276772

    I don't believe there are any of that era (~2005) which have HDMI ports, but some have DVI and DVI to HDMI is just a passive cable. (ie HDMI monitors support DVI signals on the HDMI port as a backwards
    compatibility mode)

    What you won't get is audio, which is supported on HDMI but not DVI.

    Thanks Theo, not terribly worried about sound. I think somewhere I have a
    VGA to HDMI adaptor, but I was trying to avoid additional hardware
    external to the machine.

    If you're still on VGA, a card with DVI may offer improved picture quality
    and connection to an HDMI monitor/TV with a simple cable rather than a converter.

    You could try a GeForce FX card that has DVI with a PCI interface (not PCIe, not AGP) although you might need to hunt for one - there are a few on ebay
    but they are crazy-expensive. Perhaps other RISC OS folks may have one
    spare that's known to work on the Iyonix.

    Theo
    --- Synchronet 3.21e-Linux NewsLink 1.2
  • From Stuart@Spambin@argonet.co.uk to comp.sys.acorn.hardware on Thu Mar 19 21:30:02 2026
    From Newsgroup: comp.sys.acorn.hardware

    In article <ZyA*BMVBA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:
    Thanks Theo, not terribly worried about sound. I think somewhere I
    have a VGA to HDMI adaptor, but I was trying to avoid additional
    hardware external to the machine.

    If you're still on VGA, a card with DVI may offer improved picture
    quality and connection to an HDMI monitor/TV with a simple cable rather
    than a converter.

    You could try a GeForce FX card that has DVI with a PCI interface (not
    PCIe, not AGP) although you might need to hunt for one - there are a few
    on ebay but they are crazy-expensive. Perhaps other RISC OS folks may
    have one spare that's known to work on the Iyonix.

    Thanks Theo, I'll investigate.
    --
    Stuart Winsor

    Tools With A Mission
    sending tools across the world
    http://www.twam.co.uk/
    --- Synchronet 3.21e-Linux NewsLink 1.2