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On July 23, 2008, Elias Pschernig wrote:
> On Wed, 2008-07-23 at 18:56 +1000, Peter Wang wrote:
> > On 2008-07-23, Thomas Fjellstrom <tfjellstrom@xxxxxxxxxx> wrote:
> > > On July 23, 2008, Milan Mimica wrote:
> > > > Peter Wang wrote:
> > > > > On 2008-07-22, Milan Mimica <milan.mimica@xxxxxxxxxx> wrote:
> > > > >> Peter Wang wrote:
> > > > >>> There's also the no-asm issue on djgpp.
> > > > >>
> > > > >> What's that?
> > > > >
> > > > > http://www.allegro.cc/forums/thread/596566
> > > >
> > > > Since when we care about people trying to run DJGPP executables on
> > > > WinXP?
> > >
> > > I'm not 100% certain but I think it effects pure DOS exes as well. Its
> > > as if noone ever tested the C only mode with DOS (and I mean pure C,
> > > with all of the asm disabled including various drivers that depend on
> > > it, and all of the fancy allegro calling conventions..)
> >
> > Exactly. I might try it in qemu later.
>
> I can confirm that most examples crash in qemu (the only two who open a
> graphics mode and work here are exfont and extimer I think).. but I have
> no idea how to debug it. If I run gdb, it stays in fullscreen and all I
> can do is close the qemu window :/
>
> Also, with my qemu setup, compilation took almost an hour.. much longer
> than it took in real DOS back then - so that's no good for doing much
> testing either.
>
> Does someone remember what exactly the problem is? Why would the C-only
> version need non-C calling convention for anything?
I don't think the DOS code was ever properly converted to be 100% C only. lots
of allegro still makes some assumptions about running on a DOS like system,
all that selector and "ds" stuff along with video and input drivers that
contain a large portion of asm. A lot of legacy stuff was kept, and not
totally purged when we started implementing C only mode.
> --
> Elias Pschernig <elias@xxxxxxxxxx>
>
>
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--
Thomas Fjellstrom
tfjellstrom@xxxxxxxxxx