would this be a safe assumption of delay pedals with S/M/L mode selectors?

[oald]

i was thinking for example I remember on the boss ps-2, if you have a signal repeating and then change from short mode to medium mode,you can still hear the sound repeating between an equal amount of silence,

does this mean I could wire three separate jacks form the S M L outputs(without removing the selector) and get a 3 tap delay?

[expanoncolin]

Almost certainly not without modification to the circuit. Most of the time, with digital delays, the S/M/L switch is changing the amount of memory used.  You would need a separate circuit for each mode which utilized a subset of the memory and did the analog to digital conversion, at the simplest.

-Colin