Computer Science 9608: Processor Fundamentals Topical Past Paper Questions

(a) Describe how the following registers are used in the fetch-execute (F-E) cycle: • Current Instruction Register (CIR) Program Counter (PC) • Memory Data Register (MDR) • Memory Address Register (MAR). [5] (b) Describe the roles carried out by the Arithmetic and Logic Unit (ALU…

The fetch-execute cycle is used when a computer processor runs a program. (a) (i) Complete the table by writing the register transfer notation for each of the descriptions. (ii) Write one of the letters A, B, C or D (from the table above) on each row (1 to 4 [2] [2] ), to show th…

The following table has descriptions of modes of addressing. Complete the table by writing the name of the addressing mode for each description.