ASSESSMENT $3-$ MICROPRESSOR SYSTEMS

ACTIVITY NO$.1$

STRING MANIPULATION

OBJECTIVE $($S$)$:

To learn how to print strings using service $9$ of INT $21h$

To learn how to process string in assembly language level

To create a program that provides a simple screen output by ustng the string output service.

REQUIREMENTS:

Personal Computer

TASM $1\mathrm{.}4$

DISCUSSION:

Strings can't usually fit in a register; string are then placed in the memory and then pass the address of the string in

memory of two of the registers, the segment address in DS and offset address in DX$.$