Then I tried all zone modes and found out.
The screen looks strange in zone X.
The way the stages are connected is different, so it may be a mistake in initialization.
There was no problem with the normal mode.
This must be something intrinsic to the Extra version, I didn't touch anything related to that, only to the background priority.
The same for that "dark moon" on the left at the start of zone X. It's there in the game.
i follow your idea, i think taito had
not so much time to "rearange" the "fluidity" in the extra version between stages and "how they follow smoothly" so the "dark moon" on the left on the stage X in extra version doesn't shock me, i accept it as an "easter egg".
(we keep it !)
maybe the original darius gaiden version was so hard when it came out in the arcades, than taito programmers had in "the urge" do the update to the extra version with autofire and "marathon mode" on player 2 side for commercial reasons.
darius gaiden says 1994 on title screen, the extra versions says 1994 too .
i'm curious if on the "test mode" or dip setting ,
if we can see how fast the extra version followed the original version ???
must be short.
arguably 6 month from
this source
the "cut" of the music seems normal too in the extra version, the tracks are shorter and were not "extended" to the extra version, to match the whole
"awesome-1h30-long-play-of-the-28 stages-marathon-on-player-2-mode"
this extra version is a gem regarding the original version, a little easier, the autofire is a real improvement and comfortable,
(even if it's much more an internal prototype work from taito)
+ the extra version was never ported to home consoles
all saturn and sony's versions uses the darius gaiden and not the extra version (we'll see the nintendo switch version ?? )
i'll try the "fix" tomorrow on the hardware. if i see any bug or shocking things occurs in the stages. i'll let you know
i need to sleep, excited for the "location test" of the "fixed" extra version tomorow