From: Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: porting PCI card driver from NT to DOS
Date: 8 Apr 2003 12:12:29 GMT
Organization: Aachen University of Technology (RWTH)
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Octavi Fors <ofors AT am DOT ub DOT es> wrote:

> I understand porting to DOS would be complex, but do you it would
> be possible, in theory. 

Strictly and absolutely everything is possible in theory.  That's why
it's theory, not practice. ;-)

In real life, you probably won't be able to use that existing driver
source code as anything but a reference manual for writing your own.

> In particular, is djgpp able to handle PCI bus 32-bits I/O interrupts?

Those interrupts, AFAIK, always end up as CPU interrupts in one way or the
other.  Yes, you can register a handler for such interrupts in djgpp.
Check out __dpmi_set_protected_mode_interrupt_vector() in the
LIBC documentation.


-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.