On the TI84+CE, is there a way to detect when a garbage collect should be triggered? I have seen fileioc functions trigger a garbage collection before. Namely when archiving. Presumably this is the OS call which is called to do the archiving.
I mean, how does the OS detect when there isn't enough free archive memory?
Does the value from arkchk represent the amount of ROM remaining, the amount of ROM that can actually be used, or the largest single free archive space?
Is there an OS call that would return the largest available free ROM space, or just check that there is a specified amount of ROM available?

Also: is there an OS call for garbage collection? Or does it need to be used in a BASIC program?

Clarification would be much appreciated

Cesium already does this. Perhaps I'll add a fileioc function for it.