2,130 views
2 votes
2 votes
A vertical microprogrammed control unit supports 512 instructions. The system is using 8 conditional flags and contains 31 control signals. Each instruction on an average required 1 μ operation. The approximate size of control memory is ________ in bytes.

2 Answers

0 votes
0 votes
Yes . 512 nos instructions( 2^9) correspond to 9 bits.

8 nos FLAGs ( 2^3) correspond to 3 bits and 31 Control Signals ( 2^5) corresponds to 5 bits.

Hence total nos of bits =9+3+5= 17 bits.

Hence the size of Control memory= (512*17)/8 byte =1088 bytes.

Related questions

7 votes
7 votes
1 answer
2
Supremo asked Jan 28, 2017
5,980 views
A vertical microprogrammed control unit supports 256 instructions. The system is using 8 flag conditions and contains 48 control signals. Each instruction on average requ...