Program based on Carry flag is not working , for example : program with JNC instruction

[Nilmantop]

I prepared the following code for Transfer of data blocks in bits , but it is not working since it uses JNC instruction.

MVI B,FBH
LXI H,2030H
LXI D,2040H
LOOP:MOV A,M
STAX D
INX H
INX D
INR B
JNC LOOP
HLT

[Vaibhav974]

INR B doesn't affect CY Flag, use JNZ LOOP instead... (that will have same effect, as after FF Reg B loops back to 00)