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List:       fedora-list
Subject:    Re: PCI-E to PS2
From:       Chris Adams <linux () cmadams ! net>
Date:       2024-02-15 4:04:55
Message-ID: 20240215040455.GA13264 () cmadams ! net
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Once upon a time, Tim <ignored_mailbox@yahoo.com.au> said:
> ToddAndMargo:
> > Just found this on their web site:
> > 
> >      "***Don't support CMOS or MS-DOS"
> > 
> > Even if it did not arrive dead, it would have still
> > required the OS to boot.  Lesson learned.
> 
> From what I'd read, that ought to be the case with any PCI-E based
> card.  Apparently the slots aren't dealt with early enough (they
> certainly can't be if they require drivers).  Although that doesn't
> make sense with other things - a graphics card can show a pre-boot
> screen, for instance (there's obviously some built-in functionality,
> even if it's more basic than post-boot).

I expect it's that motherboard firmware knows how to activate two kinds
of input devices - PS/2 via the emulation of the legacy chips that date
back to the 1980s, and USB.  A PCIe device is neither of those.  It's
not just a matter of initializing the device, it has to be recognized
and handled by the firmware, and it's such a rare thing, none do.

-- 
Chris Adams <linux@cmadams.net>
--
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