(WIP) New NES dumps by CaH4e3 - 模擬器

2012.10.21

又是美好的一天。

In addition to the yesterday's dump, one more long-unemulating dump is
here. The same story as with most 121 mapper games. Easy to dump, easy
to emulate, hard to reverse and find the protection tricks. ;) This
time it was 2-in-1 game: "Earth Worm Jim 2" + "Earth Worm Jim 4" with
different titles and shared different levels from the complete levels
pool for this game (which is unlicked in unprotected version without
copyrights). Just a little addition to mapper 121 was made this dump
work finally, but took some time to figure it out.

There is no much difference from previously versions in levels and music,
but Easter Egg this time triggers with secret passwords: "XFILE" for "2"
part, "NBA96" for "4" part. In previously dumped versions of this game
a different title with number "3" present in CHR ROM, but never used.
Looks like this was planned to share another bunch of levels, rather
unused in protected version of this game, but may be cancelled after
NT made his own "3" part. But who knows, maybe there anoter one cart
with "3" title exists.

Super 3-in-1 (NT-934)[!]
http://cah4e3.shedevr.org.ru/dumping/2012/Super_3-in-1_(NT-934)[!].rar

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10.20

So, thanks to GKill for this interesting cart. It was dumped a long time
ago, but it took some time to determine how it exactly works, mostly in
part mentioned further. For the first look it was the same "Master
Fighter - The Wolrd Warrior" cart with the hacked title. But, actually
it was quite different from the rest of MF hacks, it has sound samples
for title screen, fighter shouts, fight start, etc.! Even if sound
samples aren't so rare for the NES, and they may be long enough (just
like Final Mission), but there is no way to put so much sound samples
for the generic NES system, as here. At the second look, it's actually
have a extra sound cirquit on the cart's PCB. A small PLC chip makes a
simple 4-bit DAC (actually, it may be ADPCM, but as soon as resulting
sound is close enough to the original, I don't care ;)), and programm
feeding it with samples by IRQ timer. So we have twice reducing of the
samples size against 8-bit (7) PCM, and much more quality than DMC for
DMC channel. For this time, you can try it both on the latest FCEUmm
and SVN build of FCEUX.

City Fighter IV (Sound)(Unl)[U][!] http://ppt.cc/3-oE
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來源：http://cah4e3.shedevr.org.ru/dumping_2012.php

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