[uae] Re: UAE, libSDL, and how to hunt down bugs ...

  • From: Richard Drummond <evilrich@xxxxxxxxxxxxxx>
  • To: uae@xxxxxxxxxxxxx
  • Date: Mon, 3 Jan 2005 14:19:11 -0500

Hi Byron

On Monday 03 January 2005 02:05 pm, Byron Q. Desnoyers Winmill wrote:
> I grabbed the sources from CVS last night, and used UAE on the Linux
> (2.6.9) framebuffer via libSDL (1.2.8) for the first time.  This
> is on a 12" PowerBook G4 (ie. the nVidia framebuffer).  In the
> process, I came across a few interesting quirks:

Interesting. I would suspect that a lot of these problems are due to SDL and 
the changes in the kernel framebuffer layer between 2.4.x and 2.6.x. I'll 
certainly try to investigate further.

> These problems may be due to UAE, libSDL, or the Linux framebuffer.
> Can anybody suggest how to trace down the root cause?  (I'm familiar
> with C and gdb, so you are free to throw technical archanity at
> me.  I just don't have enough experience to figure out how to tackle
> these problems though.)

I'm not sure wading in with gdb would be the easiest approach. ;-)

Can you compare this with what happens when running on a 2.4.x kernel?

Can you test some other SDL-based app running on the framebuffer? (AFAICR, MOL 
doesn't use SDL for it's framebuffer-based display.)

Cheers,
Rich

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