Source: MSX Mailinglist
In October 2002, Michiel de Vries started adjusting his MIDI editor
Meridian to support the Moonsound OPL4 sound module. Meridian is a MIDI editor for MSX which can handle SMF, MID, MBM and MWM files. Sound playback is possible on MIDI devices using the MSX turboR MIDI or Philips Muziekmodule's MIDI interface. Now, the first steps have been made to enable playback on Moonsound as well. Here's the list of updates Michiel posted on the mailinglist:
- Tone editor for editing 200 two-operator FM-tones
- Tone editor for editing 200 four-operator FM-tones
- Tone editor for editing 384 ROM and 128 RAM PCM-tones. Of course, the RAM PCM-tones can use samples from the ROM-memory
- OPL4 program (=instrument in MIDI) editor for editing 256 programs, that is 2 banks each containing 128 programs. Each program can be built up out of several 2-FM, 4-FM and PCM tones and each tone has it's own volume (relative), fine tuning (=detune), coarse tuning (=transpose) and key window (=musical interval within the tone can be played, example: C3..B7). For FM tones the pan setting is limited to Left, Center or Right. For PCM tones, the pan setting can be set to Left 7.. Left 1, Center, Right 1..Right 7 or connected to the pan event in the song.
- OPL4 drum editor for editing 128 drums, that is 2 drumkits each containing 64 drums. This must be implemented from scratch, but a lot of routines from the OPL4 program editor can be used.
- OPL4 master settings. Is working for 50 %.
In each editor you can load and save separate tones or programs. Functions to copy and paste settings are available. Test tones by pressing F4. Testing tones by MIDI-IN data is not implemented yet, but will follow for sure. Online help for each editor must still be written.Michiel de Vries is looking forward to comments on Meridian to improve it even more to the needs of its future users. Check our
forum topic on Meridian for your feedback.
There seem to be some troubles with the files hosted on the Meridian website. If you want to have a look at a version of Meridian which does not support the OPL4 yet, you can download it
here
