GATE CS 2018 - Computer Organization Quiz 3 (Data path & Control Unit)

Horizontal microprogramming

The micro instructions stored in the control memory of a process or have a width of 26 bits. Each micro instruction is divided into three fields: a micro-operation field of 13 bits, a next address field (X), and a MUX select field (Y). There are 8 status bits in the inputs of the MUX.

How many bits are there in the X and Y fields, and what is the size of the control memory in number of words?

Horizontal Microprogramming does not have:

In Data path timings diagram, which statement is incorrect?

Consider a CPU shared bus system in which each CPU requests the bus 35% of the time. What is the probability that exactly 3 CPU’s are requesting the bus, when there are 10 CPU’s competing for bus?