Tool to create and try FM instruments

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By DarkSchneider

Paladin (748)

DarkSchneider's picture

11-06-2018, 20:22

Grauw wrote:

Well you can always enter them manually right?

Or do a copy from the BIOS.
http://map.grauw.nl/resources/datapack/Vol2-3.3FMBIOS.pdf
Page 17.

Quote:

Instrument data is listed in the sequence of registers 00~07 of OPLL. Data of one instrument is
composed of 8 bytes. Therefore, tone data of built­in ROM is (512) 200H bytes in total.

If not, as the format is not the same, it is very laborious manually. Already tried some and is annoying.
They are located at 4C00h­-4DFFh of FM BIOS (substract $4000 for 0 start address).

By Parn

Champion (304)

Parn's picture

13-06-2018, 14:56

Do you want register settings for the MSX-Music instruments? I have them but I don't know if it's of any interest.

EDIT: I mean the custom instruments from the MSX-Music BIOS, not the internal OPLL ones (AFAIK, those are not known for certain and it wouldn't be too useful anyway).

By DarkSchneider

Paladin (748)

DarkSchneider's picture

13-06-2018, 15:18

@Parn the musics from this guy
https://www.youtube.com/channel/UCdMjl2A-31R0W_Hdsw0r_EQ/videos?sort=dd&view=0&shelf_id=0
are made using BASIC MML, so it uses the internal OPLL instruments (the 15 HW ones), plus the 64 extra SW instruments defined in the FM-BIOS.

Some musics make clear use of them, and are nice. So some (or maybe many) of the instruments already defined by the manufacturer (Yamaha or Panasonic) gives a very good sound. I think is a waste not using them.

By Parn

Champion (304)

Parn's picture

13-06-2018, 16:33

@DarkSchneider, firstly thank you for the tip, Akira Ishihara's work is quite interesting.

I think there are many nice custom instruments in the MSX-Music BASIC, I used regularly some of them on my own work. Since BASIC can only reference 64 instruments, there are actually just 48 custom instruments. The remaining instruments are the 15 internal OPLL ones and another that can be customized by the user, which is what I suspect Ishihara uses in many of his works.

Sometimes these instruments are also good as starting points for creating new instruments. It's certainly easier than starting from scratch. Their register settings may be useful If you want to use those instruments outside MSX-Music BASIC.

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