Question

in the flag registers of micro 8085 how many flags are kept unused

Answer 1

Answer:

In 8085 microprocessor, flag register consists of 8 bits and only 5 of them are useful. The 5 flags are: Sign Flag (S) – After any operation if the MSB (B(7)) of the result is 1, it indicates the number is negative and the sign flag becomes set, i.e. 1.