Programs related $to{8086}_{?}$

Write an assembly language program in $8086$ to turn ON an LED connected at output port $199$ for $25s,$ then turn it OFF for another $25s,$ and repeat this cycle.

Assume a string of data "VIT UNIVERSITY" is stored at memory location $20015$H$.$ Write an $8086$ ALP to display this string of data in reverse order i$.$e$.$ "YTISREVINU TIV" using Software Interrupt INT $21H,$ by inserting a delay of $25$ S between each character.

Write an assembly language program in $8086$ microprocessor to display the uppercase English alphabet from $\text{'}A\text{'}$ to $\text{'}Z\text{'}$ with a delay of $25$ s between each character using Software Interrupt INT $21H.$

Design a programmable timer using $8254$ and $8086.$ Interface $8254$ at an address $0040H$ for counter $0$ and write an ALP to generate a square wave of period $1ms.$ The $8086$ and $8254$ run at $6MHz$ and $1\mathrm{.}5MHz$ respectively.

Write an assembly language program in $8086$ microprocessor to store the data "VIT UNIVERSITY" accepted via KEYBOARD to the memory location $2015H$ using Software Interrupt INT $21H,$ by inserting a delay of $25$ s between each character.

Design an Up$-$Counter $(0-255)$ by continuously sending data to output port $199($i$.$e$.$ LED$)$ with a delay of $25s$ between each count.