Operating Systems - An Introductory Course

Stack pointer: If there is user-visible stack addressing, then there is a dedicated register that points to the top of the stack. This allows the use of the instructions that contain no _____________ field.

The computers _________________________________ is ofter reffered to as real memory or primary memory.

The User-Visible Registers may be referenced by machine _____________________.

When discussing User- Visible Registers the types that are typically available are:-data- ____________________- condition code registers

Processor ________________________ are faster and smaller than main memory.

The two ___________________     __________________   are MAR and MBR.

The main memmory of a computer system consists of a set of locations that are defined by __________________________ numbered addresses contating either data or instructions.

I enable the programmer to minimize main memory references by optimizing register use. What am I?

A ________________________ includes a set of registers that provide memory that is faster and smaller than main memory.

Which of the following explains the word Volatile.

• Volumes of data is stored

• Data is typically lost when power is removed

• Data can be retrived

• Data is saved if the power is lost

• Data can never be lost

When speaking of the two internal registers MAR means Memory Address Register and MBR means _________________________________________________

• Memory Between Register

• Main Buffing Register

• Memory Buffer Register

• Main Buffer Report

• Memory Between Report

___________________________ can be assigned to a variety if functions by the progrmmer.*Usually they are general purpose in nature and can be used with any machine instruction that performs operation on data.* Some ristriction may apply

• Data register

• Address Register

True or FalseOn some processors, the program counter is user visible, but on many it is not visible.

• True

• False

Data and Address RegistersWhat us the common mode of addressing that involves adding an index to a base value to get the effective address.

• Data

• Index register

• My Register

• Segment Pointer

The _____________________ register contains the following:*main memory and address of data and instructions*portion of the address that is used in the calculation of the complete of effective address.

• Data

• Address

• Instruction

• Calculation

• Effective

I specify the address in memory for the next read or write, what am I?

• Read Only Memory

• Random Access Memory

• Random Address Register

• My Address Register

• Memory Address Register

Segment Pointer: With segmented _____________________, memory is divided into segments, which are variable-length blocks of words

• Data

• Addressing

• Resister

• Register

• EPROM

______________________________: this is used by the processor to control the operation of the processor and by privileged OS routines to control the execution of programs.

• Central Processing Unit

• OS routines

• User-visible register

• Control and status register

• Modem

True or FalseThere is a clean separation of registers into User-visible registers and Control and Status registers.

• True

• False