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List:       wine-devel
Subject:    Re: dosmem
From:       Nog <Nog () sdf ! lonestar ! org>
Date:       2001-10-05 16:29:00
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Ove Kaaven wrote:

> On Thu, 4 Oct 2001, Nog wrote:
>
> > In my quest to get helppc running and working in wine, I noticed that it
> > tries to access the text mode buffer directly (b000, I think). This
> > memory doesn't seem to be emulated in dosmem.c and my exploration into
> > how to implement it were in vein. Could anybody please help?
>
> I already have code to do that, but it's probably as a part of my DOS
> support restructure... which I don't have time to work on at the moment.
> Sorry.

>
> > Anyway on another note, to get the program to exectute this far I had to
> > add a hack to vga.c. What the program was doing, was, it waited until
> > the light pen trigger was set, when it read the light pen trigger set
> > (bit 1) from the vga status register (3da) and then it would wait until
> > it was unset again. I've attached a patch to solve this problem, but its
> > definatly not the right way of doing it, anyway see what you think.
>
> Sounds weird... does it really mess with a "light pen"?

Well, thats what my docs tell me (ie. helppc, it runs under dos).  What
I
know for certain, is that it checks bit 1 of the vga status register. 
I'm
sorry if I'm confusing anyone with my previous two messages, one stating
that
it was bit 1 and the other bit 2 but the true one is the first one, bit
1 and
light pen trigger set.  Anyway, what do say to my patch? Is it worthy
enough
to be submitted to wine-patches?

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