MCSL 017 Assembly language Programming Lab Programs

1. Write a ALP program that will compute a grade for this class based on grades input into it. Write two
different procedures one for computing total marks based of different examinations held and another
for computing overall grade of student.
Procedures-I: The total marks will be computed as follows:
20% Midterm Exam
20% Final Project
30% Quizzes
30% Projects
Procedure-II: The letter grade will be computed from the overall grade as
follows:
93+: A
90+: A-
87+: B+
83+: B
80+: B-
77+: C+
73+: C
70+: C-
65+: D
0+: F
.model small
.data
mid db 10,13,'Midterm Exam Marks(0-20): $'
prj db 10,13,'Final Project Marks(0-20): $'
quz db 10,13,'Quizzes Marks(0-30): $'
pjs db 10,13,'Projects Marks(0-30): $'
grd db 10,13,'Grade :$'
.code
mov ax, @data
mov ds, ax
call totm
call grad
mov ah, 4ch
int 21h
proc totm
mov ah, 9
lea dx, mid
int 21h
call readno
cmp al, 20h
ja totm
mov ch,al
rdprj:
mov ah, 9
lea dx, prj
int 21h
call readno
cmp al, 20h
ja rdprj
add ch,al
rdqz:

2. mov ah, 9
lea dx, quz
int 21h
call readno
cmp al, 30h
ja rdqz
add ch,al
rdpjs:
mov ah, 9
lea dx, pjs
int 21h
call readno
cmp al, 30h
ja rdpjs
add ch,al
ret
endp totm
proc grad
mov ah, 9
lea dx, grd
int 21h
mov dh, ' '
mov dl, 'A'
cmp ch, 93h
jae dspg
mov dh, '-'
mov dl, 'A'
cmp ch, 90h
jae dspg
mov dh, '+'
mov dl, 'B'
cmp ch, 87h
jae dspg
mov dh, ' '
mov dl, 'B'
cmp ch, 83h
jae dspg
mov dh, '-'
mov dl, 'B'
cmp ch, 80h
jae dspg
mov dh, '+'
mov dl, 'C'
cmp ch, 77h
jae dspg
mov dh, ' '
mov dl, 'C'
cmp ch, 73h
jae dspg
mov dh, '-'
mov dl, 'C'

3. cmp ch, 70h
jae dspg
mov dh, ' '
mov dl, 'D'
cmp ch, 65h
jae dspg
mov dl, 'F'
dspg:
mov ah,2
int 21h
mov dl, dh
int 21h
ret
endp grad
proc readno
mov ah, 1
int 21h
cmp al, '0'
jb readno
cmp al, '9'
ja readno
mov bl, al
and bl, 0fh
dgt2:
mov ah, 1
int 21h
cmp al, 13
je xitrd
cmp al, '0'
jb dgt2
cmp al, '9'
ja dgt2
mov cl, 4
shl bl, cl
and al, 0fh
or bl, al
xitrd:
mov al,bl
ret
endp readno
end