retagged by
5,917 views
11 votes
11 votes

A hypothetical processor supports 256 instructions.Each instruction takes 12 cycles to complete the execution. Processor supports horizontal control unit design. It has 24 control signals and 16 flags. What is the size of microinstruction??

retagged by

1 Answer

Best answer
12 votes
12 votes

No of control words=256*12=3072 

12 bits required for address

As horizontal programming is used no of bits for control signal=24

No of bits for flags=4

Control word format is

Signal flags(condition codes) next address

So total no of bits in contol word=24+4+12=40

selected by

Related questions

2 votes
2 votes
0 answers
1
Injila asked Dec 29, 2017
924 views
What is the difference between control signal and control word? Also, the difference between micro-operation and microinstruction.
0 votes
0 votes
1 answer
2
shikharV asked Jan 2, 2016
563 views
I want to know how much important topic is microprogramming for gate? And what and from where I should prepare for this topic?