indirect address
indirect addressing

    An addressing mode found in many processors'
   instruction sets where the instruction contains the address
   of a memory location which contains the address of the operand
   (the "effective address") or specifies a register which
   contains the effective address.  In the first case
   (indirection via memory), accessing the operand requires two
   memory accesses - one to fetch the effective address and
   another to read or write the actual operand.  Register
   indirect addressing requires only one memory access.

   An indirect address may be indicated in assembly language by
   an operand in parentheses, e.g. in Motorola 68000 assembly

   	MOV D0,(A0)

   writes the contents of register D0 to the location pointed to
   by the address in register A0.

   Indirect addressing is often combined with pre- or post-
   increment or decrement addressing, allowing the address of the
   operand to be increased or decreased by one (or some specified
   number) either before or after using it.

   (1994-11-07)