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Re: Video under Win95 and OS/2



>>>>> "Steve" == Steve Arky <phlos-ah@violet.berkeley.edu> writes:

    Steve> I have noticed that the video slowdown under OS/2 and WIn95
    Steve> is extremely pronounced. It is most noticeable in games
    Steve> (Maelstrom, e.g.,). Is there any chance this will get
    Steve> better in executor 2?

    Steve> I have a P100 with a Matrox Millenium card, so my machine's
    Steve> video should be up to snuff.

I've written some detailed postings in the past about why this
happens.  The short answer is that OS/2 and Win95 don't support DPMI
1.0, so we can't map the video card's frame buffer directly into our
address space.  This only really matters for games that bypass
QuickDraw (like Maelstrom).  The problem is compounded if you also
don't have VBE 2.0 in your Win95/Warp setup ("executor -info" will
tell you).

Eventually we'll support DirectDraw under Win95, and maybe DIVE under
OS/2, and theoretically this problem will go away.  There's also a
slimy way we can do it that throws away memory protection and
potentially lets an Executor crash bring down your machine, but we've
hesitated to do it (so far, anyway).

-Mat


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