a) (6p) Run the following program and show the memory locations 0220H and 0221H if IBM PC with 8088 CPU" is keyed in. ORG 220H BUFFER DB 15, 16 DUP (OFFH) 0220H 02211 and for the code: MOV AX, OAH MOV DX, OFFSET BUFFER INT 21H DB b) (6p) Complete the following program using a look-up table and XLAT to retrieve the value in the equation: y =r? + 2x + 5 for x values of 0 to 9. ; data segment Y TABLE X VAL DB Y VAL DB code segment MOV BX, MOV AL, XLAT MOV AL c) (7p) Complete the following program to monitor port A (of 8255) for a temperature of 100. If it is equal, it should be saved in register BL. Also, send AAH to port B and 55H to portC. BA8255 EQU 68H The base address of 8255 MOV AL, OUT BA8255+3, AL IN AL, CMP AL, BACK: BACK MOV BL, AL MOV AL, OUT NOT AL OUT AL AL d) (5p) The following program aims to clear the screen. However, it contains some errors. Find and correct the errors. CORRECTED PROGRAM INCORRECT PROGRAM MOV AX, 0600 MOV BL, 07 MOV cx, 0100 MOV DX, 184F INT 21H e) (8p) Write a four line of Assembly Code that multiplies AX by 7 without using MUL or IMUL command. Line-1: Line-2: Line-3: Line-4: f) (7p) Debug Question: Assume that the following program starts from CS:100; u cs:100 106 1523:0100 B80700 1523:0103 BB0400 1523:0106 0108 1523:0108 MOV AX, 0007 MOV BX, 0004 ADD AX, BX (2p) Execute the program using 'GO'command. - (5p) Save the program (only) on disk C:\ in a file name 'exam.1