This transformation fixes World of Xeen CTF when Walking (Footstep variation) and Shooting an Arrow (Acoustic Bass capital) on the same channel.
After the transformation fix, on channel 9, when you shoot an arrow it first changes CC#0 to 0 (capital) and then calls for "Acoustic Bass", like it should be.
Works perfectly with SC-VA.
The fun thing is that you can use your real retro PC with your real SC-55 unit, through a Midi USB dongle and an old laptop to run Midi-OX.
Old PC -> USB Midi In - Laptop with Midi OX -> USB Midi Out -> SC-55.
You can change patch/bank/sysex/NRPN behavior as you want and emulate SC-55 MK1 on a SC-55 MKII or later units.
It was way easier than I thought, so I created a full and complete fallback transformation map.
Here are complete Fallback transformation preset for MK1 (v1.10 & v1.21) and MK2, including Channel 10 drums in each, and Channel 10 separate.
Click Load in the Transformation window and load this, makes sure "Turn Map On" is toggled on.
This will load capital tones to patches that only have capital tones no matter what the CC#0 is wrongly set to.
Patches that use banks/variations are un-affected.
Channel 10 drum patches also fall to "first lowest" patch if a wrong patch number is sent, CC#0 is always changed to 0.
I used the SC-55 MK1 or MK2 instrument table (from manual) so select MK1 for accurate MK1 patch list (for example: Piano 1 has no variations in MK1 so it's always capital, etc...).
There are two MK1 versions inside, v1.10 for "Fl, Key click" on patch #122 (non-GM), and v.21 for "Breath Noise" on patch #122 (GM).
There is also a MK2 version but it is pointless because MK2 doesn't have CTF or a game that used that feature, but you can use it anyway.
Note that it will not change the actual sounds, but only the patch/bank change behavior, so you can use the SC-88 with your old games correctly.
Also, you want to disable the transformation map when playing complex GS music midi files because drums may not always be only on channel 10.
Let's just hope that game programmers were relying on CTF only on patches that have only capital tones (no Sub-capital variation 8,16,24,32).
Yes, Duke3D and Descent has the Key Click sound and Xeen interchanges between Footstep and Arrow correctly with MK1 v1 transformation.
PS. Descent 1 and Doom are from 1994 and SC-55 MK1 v1 is from 1991, the probability that "Fl. Key Click" is the right instrument is NONE.
Duke3D is from 1996 so definitely not Fl. Key Click.
Prince of Persia 2 channel 10 plays correctly because the drums patch fallback fix.
I hope somebody finds this useful after all these decades.
And... it's free, so you don't have to search for a MK1 SC-55 unit or modify the original game drivers/files. 😎
A video worth a million words: