Question

Write in assembly 8086.

Write a program to input nine numbers in 4*4 array and
prints the maximum value of
each row and then prints the minimum of each column.

Answer 1

Starting address of input array is 0500 and and store the result at address 0600

0400	MOV SI, 500	SI <- 500
0403	MOV DI, 600	DI <- 600
0406	MOV CL, [SI]	CL <- [SI]
0408	MOV CH, 00	CH <- 00
040A	INC SI	SI <- SI+1
040B	MOV AL, [SI]	AL <- [SI]
040D	DEC CX	CX <- CX-1
040E	INC SI	SI <- SI+1
040F	MOV BL, [SI]	BL <- [SI]
0411	CMP AL, BL	AL-BL
0413	JC 0417	Jump if carry is 1
0415	MOV AL, BL	AL <- BL
0417	LOOP 040E	Jump if CX not equal to 0
0419	MOV [DI], AL	[DI] <- AL
041B	HLT	End of the program

1. Assign value 500 in SI and 600 in DI
2. Move the contents of [SI] in CL and increment SI by 1
3. Assign the value 00 H to CH
4. Move the content of [SI] in AL
5. Decrease the value of CX by 1
6. Increase the value of SI by 1
7. Move the contents of [SI] in BL
8. Compare the value of BL with AL
9. Jump to step 11 if carry flag is set
10. Move the contents of BL in AL
11. Jump to step 6 until the value of CX becomes 0, and decrease CX by 1
12. Move the contents of AL in [DI]
13. Halt the program