Exam 13: Addressing Modes and Formats

Register addressing is similar to direct addressing with the only difference being that the address field refers to a register rather than a main memory address.

The base with index and displacement mode sums the contents of the base register,the index register,and a displacement to form the effective address.

Indexing performed after the indirection is __________.

Programs written in assembly language are translated into machine language by an _________.

In the __________ mode the instruction includes a displacement to be added to a base register,which may be any of the general-purpose registers.

For addresses that reference memory the range of addresses that can be referenced is not related to the number of address bits.

__________ is when the increment or decrement of the index register after each reference to it is done automatically as part of the same instruction cycle.

All instructions in the ARM architecture are __________ bits long and follow a regular format.

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

A(n)__________ defines the layout of the bits of an instruction in terms of its constituent fields,must include an opcode and,implicitly or explicitly,zero or more operands.

The __________ byte consists of three fields: the Scale field,the Index field and the Base field.

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

If a programmer wished to program directly in machine language it would be necessary to enter the program as ________ data.

The principal price to pay for variable-length instructions is an increase in the complexity of the processor.

The _________ byte specifies whether an operand is in a register or in memory,and if it is in memory,then fields within the byte specify the addressing mode to be used.

The memory transfer rate has not kept up with increases in processor speed.

__________ explicitly specifies which segment register an instruction should use,overriding the default segment-register selection generated by the x86 for that instruction.

__________ has the advantage of flexibility,but the disadvantage of complexity.

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

The x86 is equipped with a variety of addressing modes intended to allow the efficient execution of high-level languages.