Arguments: address and length
Canonicalize the scratchpad. Set the modulus address to the given address and the
length to length.
This command will cause an error if:
- The length is less than MAU_MIN_LENGTH or greater than MAU_MAX_LENGTH
- The memory address refers to a RAM or ROM slot, but those slots are not
configured
- The interval [address … address+length-1] does not all refer to the same type of
memory
- An arithmetic overflow occurs (when canonicalizing the scratchpad)