On 6/25/2018 1:14 PM, Schoenfelder, Tim M wrote:
Ralf,
Anyway, I checked my FreeDOS stuff this weekend and my diagnostic tool
is unfortunately not among the stuff I was able to restore previously.
I do know that I have another computer where this is on, but that is
in my storage and as I am in the middle of moving (again), I can't get
that one out for now.
I do however have various pieces of source code from which I can whip
up another test program. Will do so when I get back home later
today/tonight.
If you could put the source(s) onto a github site or similar that I
could then download and compile, that may be the best way for me to
get permission to try it here at work. - Tim
Out of bad experience in the past, I am a bit reluctant to do that. I
could possibly send you the necessary sources, but you would need
Borland Pascal 7.0 to compile them...
The basic issue is that this is less of a problem of (Free)DOS, but
what exactly the hardware/BIOS is providing and initializing in
regards to the serial ports.
Yes, your first reply suggested that. I have since started reading
the UEFI spec (
http://www.uefi.org/sites/default/files/resources/UEFI%20Spec%202_6.pdf
). I hope to understand how to access the serial port in UEFI legacy
mode both with and without FreeDOS loaded as UEFI’s runtime functions
are different than its bootload functions. That may help explain why
my serial communications efforts in FreeDOS presently fail. -Tim
I don't think that reading the UEFI specs are going to help you much, it
all depends on what is effectively implemented. And if that is not in a
(old-style) BIOS compatible way, ...
I just finished dinner at 11pm and need to get up at 5:30am again, I
hope I get some time tomorrow night to get you something...
Ralf
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