As the Formula Device is “highly alpha” stage and as such unofficially supported (in fact it is stated that it is unstable and may cause crashes) I fully understand if these are looked at with the very lowest priority, or even not really at all… Even though thought it might be worth bring to the table some of the findings from playing with it in the last DDRC competition.
It appears it becomes very unstable when chaining devices together. Have found it hard to put a more defined explanation than that.
Attached you will find a zip with two files. The xrnt is a DSP Chain containing a number of Formula Devices, outputs going to one of the inputs of the next, and finally to a Ring Mod. The xrns is just a song, no samples or instruments, with the afore mentioned DSP Chain loaded into Track1.
The DSP Chain will nearly always load. It will work when you play, you can load a sample, play it in the track you have loaded it on and hear the effect. It will quite often crash on attempting to load the same chain into a second or third track though.
The Song will crash Renoise as soon as you try and open it.
One excerpt from my Crash Log:
[details=“Click to view contents”] Application: Loading ‘test.xrns’…
MIDI: Loading MIDI actions from file ‘C:\Program Files\Renoise 2.7.2\Scripts\GlobalMidiActions.lua’…
Osc: Loading OSC actions from file ‘C:\Program Files\Renoise 2.7.2\Scripts\GlobalOscActions.lua’…
Player: Constructing…
Player: Creating the slave threads…
Player: Start running…
GUI: Creating the Document GUI…
CrashLog: Handling Exception! Code : C0000005
GUI: Successfully constructed
CrashLog: 00B11EB7: xmlUCSIsCat +48ECD8
CrashLog: 00B1299C: xmlUCSIsCat +48F7BD
CrashLog: 00B12C85: xmlUCSIsCat +48FAA6
CrashLog: 00C01781: xmlUCSIsCat +57E5A2
CrashLog: 00401464: ??? +00000
CrashLog: 008FCADA: xmlUCSIsCat +2798FB
CrashLog: 00B129EE: xmlUCSIsCat +48F80F
CrashLog: 00B12BEF: xmlUCSIsCat +48FA10
CrashLog: 00926EB5: xmlUCSIsCat +2A3CD6
CrashLog: 0092CA23: xmlUCSIsCat +2A9844
CrashLog: 00C4ED23: xmlUCSIsCat +5CBB44
CrashLog: 00C4AC54: xmlUCSIsCat +5C7A75
CrashLog: 00C4AD86: xmlUCSIsCat +5C7BA7
CrashLog: 00B4E474: xmlUCSIsCat +4CB295
CrashLog: 7C80B713: GetModuleFileNameA +001B4
Threads: Timeout while waiting for Thread2 to finish its commands!!
Application: Successfully loaded ‘test.xrns’.
Application: Caught an unhandled exception (Thread: AUDIO)!
Application: Saving a backup…
Application: Terminating…
DirectSound: Stop Polling…
DirectSound: Timeout while waiting for DirectSound to shut down!!
DirectSound: Releasing Primary Sound Device…
DirectSound: Releasing Realtek HDA Primary input…
MIDI: Shut down: Closing all acquired MIDI devices…
MIDI: Shutting down DirectMusic…
[/details]