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

    Purpose:        Increment - add 1 to an integer
    Format:         opcode sum.mx
    Operation:      sum = sum + 1
    C. Codes:       N = {sum LSS 0}, Z = {sum EQL 0},
                    V = {integer overflow}, C = {carry from MSB}
    Exceptions:     Integer overflow
    Opcodes:        96    INCB     Increment byte
                    B6    INCW     Increment word
                    D6    INCL     Increment long
    Description:    One is added to the sum operand and the
                    sum operand is replaced by the result.