ASMA302W USING specifies register 0 with a non-zero absolute or relocatable base address

Explanation
The assembler assumes that when register 0 is used as a base register,
it contains zero. Therefore, regardless of the value specified for
the base address, displacements are calculated from base 0.

System action
The assembler calculates displacements as if the base address specified
were absolute or relocatable zero.

Programmer response
Check the USING statement to ensure that you have specified the
correct base address and base register. You can suppress this message
by reducing the value specified in the WARN suboption of the USING
option by 2.

Severity
4