In some email I received from Charles Shannon Hendrix, sie wrote:
> 
> I ran it on Solaris 3 years later and it was even worse, but exactly why
> I don't know.  Could have been drivers, or could have just been because
> Solaris was so slow on the machines in the first place.
> 
> In any case, it seems there is no way to get >8-bit fast graphics on
> a low-end SPARC.  I have been told there are cards that are different
> that run fast, but I've yet to find on, and in discussions in the last
> year it seems that is the general consensus.
[...]
> Something must be broken with the S24 cards.

Support for the S24 card ended with Solaris 2.5.1.  After that it
is treated (if at all) as a cg3/6, I think.

SunOS 4 never had a driver to make it 24bit nor take advantage of
the "acceleration".

The fastest SBUS/AFX graphics card is the TGX+ (8bit), I believe.
4MB, double buffered.  "Wow"

Darren