$1.$ a$)10$ numbers are stored from location $1000$ onwards. Write an assembly language program to count the number of odd numbers in these. Draw the flowchart also.

$```$

From Code Segment

MOV BX$,1000$H

MOV CX$,10$

XOR AH$,$ AH

AGAIN: MOV AL$,[$BX$]$

ROR AL$,1$

JNC NEXT

INC AH

NEXT: LOOP AGAIN

$```$

b$)$ Suppose $\backslash (\backslash$mathrm$\{$AX$\}=\backslash$mathrm$\{$ACH$\}\backslash ).$ What will be the value in AX in each of the following cases if the carry flag is set? $($i$)$ROL $\backslash (\backslash$mathrm$\{$AX$\},2\backslash )($ii$)$ RCL $\backslash (\backslash$mathrm$\{$AX$\},2\backslash )$

$2.$ What will be the values of the specified registers and flags after the execution of the following instructions?

$```$

MOV CX$,0604$H

MOV AX$,0$A$98$H

RCL AL$,$CL ; CF$=1$

ADD AX$,$CX

AX$=?,$ CX$=?,$ CF$=?,$

PF$=?,$ AF$=?,$ SF$=?,$ ZF$=?$

$```$

$```$

$2$ MOV AX$,8$F$0$AH

$3$ MUL AL

$-$ SUB AH$,$AL

s ADC AX$,$AX

AX$=?,$ CF$=?,$ PF$=?$

$(6$ AX$=?,$ CF$=?,$ PF$=?,$

$```$

and B are ASCII number

$3.$ Given the definition of the following data segment, where A and B are ASCII numbers.

$```$

$.$DATA

A DB $\text{'}28,$

B DB $\text{'}54$

ORG $0100$H

C DB $?$

$```$

Write the required code segment that converts these ASCII numbers to packed BCD and add them up to calculate sum in pack BCD form. Save the result in variable C$.$ The resulting BCD number is assumed to be a byte.

$4.$ Write an assembly language program that will process the following sentence as follows :

a$)$ Convert the first letter of each word to upper$-$case,

b$)$ Count and save the number of words in the sentence,

c$)$ Count and save the number of alpha characters $($letters$)$ in the sentence

Consider the following sentence in your program : "king khalid university was established in $\backslash (1419$ H $\backslash )."$

The program should be general and work for any sentence ending with a full stop $\text{'}.\text{'}$ character.

Uppercase characters are ordered between $\text{'}\backslash ($ A $\backslash )\text{'}\backslash ((41$ H$)\backslash )$ and $\text{'}\backslash ($ Z $\backslash )\text{'}\backslash ((5$ A H$)\backslash )$ and lowercase characters are ordered between $\text{'}\backslash ($ a $\backslash )\text{'}\backslash ((61$ H$)\backslash )$ and $\text{'}\backslash ($ z $\backslash )\text{'}\backslash ((7$ A H$)\backslash )$ in the in the ASCII Code table. For lowercase letters, bit $\backslash (5($d $5)\backslash )$ of the ASCII code is $1$ where for uppercase letters it is $0.$

For example,

$5.$ Write a program that finds the number of $1$ s in a $16-$bits data.

$6.$ Write a program that finds the number of $0$ s in a $8-$bits data.

$7.$ How many I$/$O modes are available in $8255$ A programmable peripheral interface? List and explain them in short.

$8.$ For the circuit diagram shown in Figure $1$:

a$)$ What are the addresses of port A$,$ port B$,$ port C$,$ and control register PCW$.$

b$)$ Which control word is required to interface seven segments display to port A and switches to port B and port C in mode $0.$

c$)$ Write an $8086$ ALP program to read the switches and display their sum on the seven segment display continuously.