Argument N invalid. The assembler attempted to use base register Rn
 to form a register expression of the form offset(Rn). However, the
 argument offset exceeds the allowable range of -32,768 to +32,767.

    Error: The assembler attempted to use a base register, which
    you specified with a previous .BASE directive, to form a valid
    register expression of the form offset(Rn). This attempt failed
    because the specified argument offset exceeded the valid range of
    the base register offset (_32,768 to +32,767). The register cited
    in the message represents the register that produced an offset
    closest to the range of -32,768 to +32,767.

    User Action: Check the instruction in the source code and see
    description of the .BASE directive.