Need help in programming assembly (16-bit real mode & 32-bit protected mode)

Need help in programming assembly (16-bit real mode & 32-bit protected mode)

1. Handling arithmatic in 16 bit real mode
2. Handling arithmatic in 32 bit protected mode
3. Handling keyboard in 16 bit real mode
4. Handling keyboard in 32 bit protected mode
5. Handling mouse in 16 bit real mode
6. Handling mouse in 32 bit protected mode
7. Handling floppy/hardisk in 16 bit real mode
8. Handling floppy/hardisk in 32 bit protected mode
9. Handling printer in 16 bit real mode
10. Handling printer in 32 bit protected mode