Maybe it's a known issue, but i searched "Swiv" with the search engine ( search.php?keywords=swiv ) and found nothing.
My apologies if it's a well kown problem...
Anyway.
For AGES, on snes9x and zsnesw I have this black line in the middle of Super Swiv title screen :
This shmup is one of my favorites (no kidding) and, if the game is ok, this black line is anoying. I tested both PAL and JAP versions. The line is here.
The roms are OK since in bsnes the display is correct :
I recently tried snes9x 1.6 and the line is still here...
Any clue ?