[oopic] VCs, Userclass etc.

How many VCs (virtual circuits) can I be expected to reasonably run?
Would using Userclass objects make any difference as opposed to VCs?
I am assuming a program that uses about 60 bytes or so, leaving wiggle
room. One VC for general motor control, one for obstruction detection,
one for communication... how much is too much?
Another way of asking: when would I know it is my fault (coding) and
not a limitation?

On a different but related note, anybody work up any good error-
trapping routines?

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