Write a program for subtractions, addition, and multiplication of two 8 bit and 16 bit numbers in assembly language in direct, immidiate, register,indirect, register mode.

;IMMEDIATE ADDRESSING MODE

;ADDITION 8BIT

;mov a,#5H

;mov r0,#5H

;add a,r0

;SUBSTRACTION 8BIT

;MOV A,#64H

;MOV R0,#34H

;SUBB A, R0

ADDITION OF 16BITS

MOV A,#020H

ADD A,#0DEH

MOV R0,A

MOV A,#65H

ADDC A,#0ABH

MOV R1,A

END

;SUBSTRACTION OF 16BITS

;MOV A,#0DEH

;SUBB A,#020H

;MOV R0,A

;MOV A,#0ABH

;SUBB A,#065H

;MOV R1,A

;END

;DIRECT ADDRESSING MODE

;ADDITION OF 8BITS

;MOV R1,#23H

;MOV R2,#21H

;MOV A,R1

;ADD A,R2

END

;SUBSTRACTION OF 8 BIT

;MOV R1,#0A3H

;MOV R2,#89H

;MOV A,R1

;SUBB A,R2

END

;ADDITION OF 16BITS

;MOV R1,#0ABH

;MOV R2,#012H

;MOV R3,#026H

;MOV R4,#78H

;MOV A,R1

;ADD A,R3

;MOV R6,A

;MOV A,R2

;ADDC A,R4

;MOV R7,A

END

;SUBSTRACTION OF 16BITS

;MOV R1,#0ABH

;MOV R2,#012H

;MOV R3,#026H

;MOV R4,#78H

;MOV A,R2

;SUBB A,R4

;MOV R6,A

;MOV A,R1

;ADDC A,R3

;MOV R7,A

END

;INDIRECT ADDRESING MODE

;ADDITION OF 8BITS

;MOV A,23H

;ADD A,24H

END

;SUBSTRACTION OF 8BITS

;MOV A,23H

;SUBB A,24H

END

;ADDITION OF 16BITS

;MOV A,23H

;ADD A,25H

;MOV R6,A

;MOV A,22H

;ADDC A,24H

;MOV R7,A

;SUBSTRACTION OF 16BITS

;MOV A,23H

;SUBB A,25H

;MOV R6,A

;MOV A,22H

;SUBB A,24H

;MOV R7,A

END

;RESITER INDIRECT 

;ADDITION  OF 8BITS

MOV R1,23H

MOV R2,24H

MOV A,R1

ADD A,R2

END

;SUSTRACTION O 8BITS

MOV R1,23H

MOV R2,24H

MOV A,R1

SUBB A,R2

END

;ADDITION OF 16 BITS

MOV R1,23H

MOV R2,25H

MOV A,R1

ADD A,R2

MOV R6,A

MOV R3,22H

MOV R4,24H

MOV A,R3

ADDC A,R4

MOV R7,A

END;

;SUBSTRACTION OF 16BITS

MOV R1,23H

MOV R2,25H

MOV A,R1

SUBB A,R2

MOV R6,A

MOV R3,22H

END

MOV R4,24H

MOV A,R3

SUBB A,R4

MOV R7,A

END

MULTIPLE 8 BIT 

       MOV R0, #20H;set source address 20H to R0

        MOV R1, #30H;set destination address 30H to R1

        MOV A, @R0;take the first operand from source to register A

        INC R0; Point to the next location

        MOV B,@R0;take the second operand from source to register B

        MUL AB ;Multiply A and B

        MOV @R1, B; Store higher order byte to 30H

        INC R1; Increase R1 to point to the next location

        MOV @R1, A;Store lower order byte to 31H