Write an assembly language program that begins by asking the user to enter a string, List, of a size that does not exceed MaxSize = 80. Then, the program allows the user to define a substring to be stored in a string variable SubString and then displayed on the screen. The substring is defined by its starting index, start, and its length, len. The program copies len consecutive characters from List, beginning at index start into SubString. If the NULL character is encountered in List, the program stops copying characters into SubString. The program displays the SubString on the screen as well as its length.Make use of the assembler operators SIZEOF, LENGTHOF and OFFSET.Use the following procedures for input/output. For more details about these procedures see Chapter 5 of Irvine textbook.a. ReadInt: to read a 32-bit signed decimal from the keyboard, terminated by the Enter key.b. WriteInt: Writes a signed 32-bit integer to the console window in decimal format.c. ReadString: Reads a string from the keyboard.d. WriteString: Writes a null-terminated string to the console window.Sample Run :Enter a string that does not exceed 80 characters:COMP3501 Computer Organization and Assembly LanguageDefine a sub-string by entering the following: Index of the starting character: 9Length of the sub-string: 8The sub-string is:Computer Write an assembly language program that begins by asking the user to enter a string, List, of a size thatdoes not exceed MaxSize = 80. Then, the program allows the user to define a substring to be stored ina string variable SubString and then displayed on the screen. The substring is defined by its startingindex, start, and its length, len. The program copies len consecutive characters from List, beginning atindex start into SubString. If the NULL character is encountered in List, the program stops copyingcharacters into SubString. The program displays the SubString on the screen as well as its length.Make use of the assembler operators SIZEOF, LENGTHOF and OFFSET.Use the following procedures for input/output. For more details about these procedures see Chapter 5of Irvine textbook.a. ReadInt: to read a 32-bit signed decimal from the keyboard, terminated by the Enter key.b. WriteInt: Writes a signed 32-bit integer to the console window in decimal format.c. ReadString: Reads a string from the keyboard.d. WriteString: Writes a null-terminated string to the console window.Sample Run :Enter a string that does not exceed 80 characters:COMP3501 Computer Organization and Assembly LanguageDefine a sub-string by entering the following:Index of the starting character: 9Length of the sub-string: 8The sub-string is:Computer

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