midibox_ng_v1 enable MIDI3/4 ports

[southpole]

dear midiboxers,

i'm trying to get the midi port 3 and 4 extension for an MHHP_CORE_LPC17 board working.

the instructions say these have to be enabled in the firmware.

now i'm looking for where to do that, can somebody give me a hint?

it's probably some flag in a header file but i can't find it :-/

thanks!