Many RISC machines, as well as the CISC IBM System / 360 and successors, have subroutine call instructions that place the return address in an address register the register-indirect addressing mode is used to return from that subroutine call.
42.
When the RASP has alternating even and odd registers the even holding the " operation code " ( instruction ) and the odd holding its " operand " ( parameter ), then indirect addressing is achieved by simply modifying an instruction's operand.
43.
The idea was an old one, proposed by Burks-Goldstine-von Neumann ( 1946-7 ), and sometimes called " the computed goto . " Melzak ( 1961 ) specifically mentions the " computed goto " by name but instead provides his model with indirect addressing.
44.
Again, the above instruction set is for a " random access machine ", a " RAM " a counter machine with indirect addressing; instruction " N " allows for indirect storage of the accumulator, and instruction " L " allows for indirect load of the accumulator.
45.
The RASP's finite-state machine is equipped with the capability for indirect addressing ( e . g . the contents of one register can be used as an address to specify another register ); thus the RASP's " program " can address any register in the register-sequence.
46.
The pointer register is exactly like any other register with one exception : under the circumstances called " indirect addressing " it provides " its " contents, rather than the address-operand in the state machine's TABLE, to be the address of the target register ( including possibly itself ! )"
47.
He defines indirect addressing for his model ( p . 288 ) and provides two examples of its use ( p . 89 ); his " proof " ( p . 290-292 ) that his model is Turing equivalent is so sketchy that the reader cannot tell whether or not he intended the indirect addressing to be a requirement for the proof.
48.
He defines indirect addressing for his model ( p . 288 ) and provides two examples of its use ( p . 89 ); his " proof " ( p . 290-292 ) that his model is Turing equivalent is so sketchy that the reader cannot tell whether or not he intended the indirect addressing to be a requirement for the proof.
49.
Communication can happen right after the association . " Direct addressing " uses both radio address and endpoint identifier, whereas indirect addressing uses every relevant field ( address, endpoint, cluster, and attribute ) and requires that they are sent to the network coordinator, which maintains associations and translates requests for communication . " Indirect addressing " is particularly useful to keep some devices very simple and minimize their need for storage.
50.
Communication can happen right after the association . " Direct addressing " uses both radio address and endpoint identifier, whereas indirect addressing uses every relevant field ( address, endpoint, cluster, and attribute ) and requires that they are sent to the network coordinator, which maintains associations and translates requests for communication . " Indirect addressing " is particularly useful to keep some devices very simple and minimize their need for storage.
