Xeen engine MT-32 support

[melrose]

ScummVM 2.9.0 release notes told us

MM:
Added MT32/LAPC-1 support for Xeen engine.

I tested true Roland MT-32 hardware for Might and Magic IV: Clouds of Xeen (DOS/English) but failed. No MT-32 Sound, just Soundblaster (or something else).

Game files are (from GOG Might and Magic 6 Limited Edition):

XEEN.CC
XEEN.DAT
MM.DAT (from scummvm-2.9.0)

Did i miss something?

[Raziel]

I'm pretty sure you did, just to rule out the obvious...did you set your midi hardware to be used in the audio tab of scummvm instead of default (adlib)?

[melrose]

Hardware is set up properly (USB-MIDI-Interface[ALSA] on a Debian/Ubuntu system). No problems with other MT-32 related games (Space Quest III, Rise of the Dragon) using ScummVM. Also no problem to run MM4 on DOSBox with MT-32 hardware.

But all tests with games supported from the Xeen engine failed.
There are no MIDI messages on my USB-MIDI-Interface.

[Praetorian]

For what is worth, I believe this is the relevant PR for this feature support:
https://github.com/scummvm/scummvm/pull/5660

There's some info in the description about which devices (real or emulated) should be supported.