Masumi Takimoto (NES Driver)

Masumi Takimoto

Released 1988-02-10 Programmers Tadashi Fukuzawa Language 6502 Assembly

Masumi Takimoto is an unofficial name for the sound driver used by Chunsoft. Based on the credits the game was used in, the driver was programmed by Masumi Takimoto and Tadashi Fukuzawa, who had previously coded a sound driver for the company.

The composers entered music data in a custom MML.

Release History

The driver was used in only two games; Dragon Warrior IV and Tetris 2 + BomBliss. Dragon Warrior IV was the only title to see an international release, while Tetris 2 + BomBliss stayed in Japan.

Ouotput

The driver outputs to the 2A03 of the NES. It is currently unknown how it sounds on PAL systems.

Games

Released	Title	Sample
1990-02-11	Dragon Warrior IV (NES) (ドラゴンクエストIV)
1991-12-13	Tetris 2 + BomBliss (FC) (テトリス２＋ボンブリス)

Technical

Frequency Registers

B-6 = 1B
A#6 = 1D
A-6 = 1F
G#6 = 21
G-6 = 23
F#6 = 25
F-6 = 27
E-6 = 29
D#6 = 2C
D-6 = 2F
C#6 = 31
C-6 = 34
B-5 = 38
A#5 = 3B
A-5 = 3F
G#5 = 42
G-5 = 46
F#5 = 4B
F-5 = 4F
E-5 = 54
D#5 = 59
D-5 = 5E
C#5 = 64
C-5 = 6A
B-4 = 70
A#4 = 77
A-4 = 7E
G#4 = 86
G-4 = 8E
F#4 = 96
F-4 = 9F
E-4 = A9
D#4 = B3
D-4 = BD
C#4 = C9
C-4 = D5
B-3 = E1
A#3 = EF
A-3 = FD
G#3 = 10C
G-3 = 11C
F#3 = 12D
F-3 = 13F
E-3 = 152
D#3 = 167
D-3 = 17C
C#3 = 193
C-3 = 1AB
B-2 = 1C4
A#2 = 1DF
A-2 = 1FB
G#2 = 21A
G-2 = 23A
F#2 = 25C
F-2 = 280
E-2 = 2A6
D#2 = 2CE
D-2 = 2F9
C#2 = 326
C-2 = 356
B-1 = 389
A#1 = 3BF
A-1 = 3F8
G#1 = 434
G-1 = 475
F#1 = 4B8
F-1 = 500
E-1 = 54C
D#1 = 59D
D-1 = 5F3
C#1 = 643
C-1 = 6AD
B-0 = 712
A#0 = 77E
A-0 = 7F0

Memory Locations

• Dragon Warrior IV: $7EC95-$7ED2A
• Tetris 2 + BomBliss: $1464A-$146DF