Hi Frank,
Just a quick 'thank you'. I've speed-read your message and there's a
*lot* of interest in there. I'm very grateful for all the input.
On Mon, 7 Feb 2022, Frantisek Rysanek wrote:
On 6 Feb 2022 at 11:25, G.W. Haywood via Freedos-user wrote:
Did I miss something? No attachment, DKIM says your mail was altered.
I was referring to an attachment in my first message. ...
Yeah, sorry, I realized that after I hit 'ctrl-X' (that's what passes
for clicking 'send' on my mail client, which doesn't use a mouse... :).
... I'm wondering if your extender uses or produces DPMI, or
possibly predates DPMI in the flow of evolution... If it's pre-DPMI,
perhaps it has some service of its own to create the MMIO mapping.
Or does it run in "unreal mode" ? (= no questions asked, you can
access whatever memory address you want)
I'm afraid I've forgotten most of the details, and I fear that the
manuals aren't easily accessible because I've put them in storage in
another country. I need to look for what I can find online or in my
archives. I tried to recover an archive over the weekend, but before
it got to anything interesting it filled the disc on my laptop and I
had to stop it. When I get a chance I'll have another go, this time
being more selective about what's recovered.
http://support.fccps.cz/download/adv/frr/VGA_OFF.zip
Got it thanks, looks very useful.
... DJGPP compiler ...
Through all this I've been wondering about the compiler. The one I
use for DOS is still the one I bought from Zortech, before they got
taken over by Symantec. Imagine that, buying a compiler! Apparently
I ran into dozens of issues, and eventually worked through or around
them all, but if I find myself using new libraries or a different DOS
extender just to get PCI interrupts working I might not be able to
build everything with the old compiler. Scary.
Apologies for the delays in my responses...
Don't be daft!
And now it's time for me to go to sleep :-)
It's been a long day here too. Thanks again.
--
73,
Ged.
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