Assembly Language [ EMU 8086]

Question

I have this mov cx,12345d

Now i want to check if the last 3 digits of this number are for example 111 in binary

Thanks

Answer 1

"AND" the value with "111" (binary) to clear all other bits and then compare the result with "111" (binary).

It's been more than a decade since I did some x86 assembly, but it should look something like this:

AND CX, 111b
CMP CX, 111b
JE found
; whatever happens when it is not found
JMP end
found: 
; whatever happens when it is found
end:
; the end