Sega Channel Demo Cartridge #4

Sound chip: SN76489
Systems: Mega Drive Genesis
Composer: John Baker
Release date:
Version Date Author Description
1.00 2011-01-31 Valley Bell Initial release.
1.10 2012-03-29 dissident93 Added John Baker as composer.
1.11 2021-12-30 andlabs Fixed txt file for vgmrips.
Size reductions
vgm_cmp1.59 MB416 KB25.6%
2 ratings • 5082 downloads • 143 views
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It's the fist MegaDrive pack ripped with
MESS 0.140. (I needed something to test it. :)

By the way: I used the vgm2mid trimming method,
because the GEMS sound driver makes the VGM
Loop Finder useless.

The two jingles that use the DAC are not
optimized with optvgm, because it slightly
increased the size of the vgm.

I included two versions of "Think Tank",
because of a looping bug. After the first loop
the melody and the second bass instrument go
out of sync (9 measures every loop).
The normal version is looped as it's supposed
to be. This version was hex-edited to remove
some melody notes that were playing where the
loop occours.
The long version loops back after the third
actual loop (based on the bass line). After
some loops it's easy to hear how the music
screws up.

Funny fact: The sound test removes all trailing
zeroes. So "Song 0" doesn't even show a number.

Size reduction (vgm_cmp):
  1.59 MB -> 416 KB (25.67 %)

Valley Bell

Source: Project2612

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