Chap 13 group 3

The advantage of __________ is that no memory reference other than the instruction fetch is required to obtain the operand.

• a. direct addressing
  

• b. immediate addressing
  

• c. register addressing

• d. stack addressing

The principal advantage of ___________ addressing is that it is a very simple form of addressing.

• a. displacement

• b. register

• c. stack

• d. direct

__________ has the advantage of large address space, however it has the disadvantage of multiple memory references.

• a. Indirect addressing

• b. Direct addressing
  

• c. Immediate addressing

• d. Stack addressing

The advantages of (a)   addressing are that only a small address field is needed in the instruction and no time-consuming memory references are required.

Displacement addressing has the advantage of (a)   , but the disadvantage of complexity.

The only form of addressing for branch instructions is _________ addressing.

• a. register

• b. relative

• c. base

• d. immediate

Which of the following interrelated factors go into determining the use of the addressing bits?

• a. number of operands

• b. number of register sets

• c. address range

• d. all of the above

The _________ was designed to provide a powerful and flexible instruction set within the constraints of a 16-bit minicomputer.

• PDP-8

• PDP-11

• PDP-10

• PDP-1

Indexing performed after the indirection is __________.

• relative addressing

• postindexing

• preindexing

• autoindexing

For the _________ mode, the operand is included in the instruction.

• immediate

• displacement

• register

• base