Unexpected behavior in FM3ch expanded mode

[CommodoreKulor]

Awesome tracker, loving it so far. I've noticed some unexpected behavior pertaining new note triggers in FM3ch expanded mode. Attached two files demonstrating the oddities: Oddities.zip

MysteryPorta.btm - Demonstrates a small jingle, first played on a normal FM channel and then on op 1 on channel 3. I would expect the two to sound the same, but on channel 3 the notes seem to be changing frequency but not retriggering.

RetriggerOnNoteChange.btm - Splits channel 3 into two 2op parts, however the frequency changing in one part appears to retrigger the second part inexplicably. Would expect the "bell" not to retrigger.

[rerrahkr]

Thanks for your report. I will check them.

[rerrahkr]

They were caused by incorrect mask definitions for controlling key off before key on in extended FM channels. I fixed them at c6be6e3.