> For some unknown reason following code fails on sparc64 (but works on
> macppc):

> 	fb_memory = (u_char*) mmap(0, fb_size, PROT_READ | PROT_WRITE,
> MAP_SHARED, fb_fd, 0);

Are you sure 0 is the correct offset?  Different drivers can, and in my
experience do, have different offset-to-thing mappings.

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