REPORT:

Solve the following equation by using shift and $($ADD$,$ SUB $)$ instructions:

Result $=\frac{A^2-12B+4C}{4}$

Where $A=4,B=7,$ and $C=8.$

$2.$ Write A program to count number of ones in a word.

$3.$ Write a program that swaps the least significant $4$ bits with the most significant $4$ bits of each byte in a block of memory of size $16$ bytes in DS:SI $($with DS $=$ DDDDh and SI $=100$h$),$ using only shift and rotate instructions.

Example:

For the byte AFh $($binary $10101111),$ the result after swapping the $4$ most and least significant bits would be FAh $($binary $11111010).$

For the byte $54$ h $($binary $01010100),$ the result would remain $54$ h because the bits are symmetric.