VMS Help MACRO, VAX MACRO Assembler, Instructions, MCOMx  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Purpose:        Move the logical complement of an integer
    Format:         opcode src.rx,dst.wx
    Operation:      dst = NOT src
    C. Codes:       N = {dst LSS 0}, Z = {dst EQL 0}, V = 0, C = C
    Exceptions:     None
    Opcodes:        92    MCOMB    Move complemented byte
                    B2    MCOMW    Move complemented word
                    D2    MCOML    Move complemented long
    Description:    The destination operand is replaced by the ones
                    complement of the source operand.