SegaSonic Popcorn Shop

Sound chips: SN76489 YM3438
System: System C-2
Composer: Unknown
Developer: Sega AM1
Publisher: Sega
Release date: 1993
History
Version Date Author Description
1.00 2015-11-04 Valley Bell Initial release.
Size reductions
ToolFromTo%
vgm_cmp205 KB141 KB68.8%
8 ratings • 776 downloads • 4534 views
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Made using a custom version of the MAME 0.164
VGM mod that support the game, which was added
between MAME 0.166 and 0.167.

Size reduction (vgm_cmp):
    205 KB -> 141 KB (68.7 %)


Hacking Notes:
The sound driver is SMPS 68k. It does a few
things differently from MegaDrive SMPS though.

Sound RAM:                 FFF400+
Sound Queue:               FFF7D0-F80F
Sound Queue Write Pointer: FFF810/11
Sound Queue Read Pointer:  FFF812/13

In order to play a song, set FFF7D0 = SongID,
then set FFF811 = 01 and FFF813 = 00.

Sound Test ID list: 0026B2
PlaySound routine:  00099A
PlaySound wrapper:  0064BE (Put the sound ID in
register D7 and set D6 to 0. The routine skips
playing the sound if register D6 is nonzero.)

Valley Bell

Source: VGMRips

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