[GEM Development] FreeGEM drivers updated

[John Elliott]

  I've updated the FreeGEM drivers (in GEM/3, GEM/4 and GEM/5 versions) 
because of a bug in SDUNI9.VGA. They can be found at the usual place:

<http://www.seasip.info/Gem/drivers3.html>
<http://www.seasip.info/Gem/drivers4.html>
<http://www.seasip.info/Gem/drivers5.html>

  What brought this about was studying the Trident 8900 series drivers, of
which there are five. I can't distribute them on my website because they
don't have Digital Research copyright messages, but I've analysed their 
behaviour here:

<http://www.seasip.info/Gem/trident.html>

-- 
John Elliott