I'm trying to write an assembly program that will take two integer inputs. One must be a number to be converted and one must be the base to convert to. Right now my program is hanging up after one input. My code is posted below and I tried to comment it the best i could. If someone could edit it to do what it needs to do, that would help a lot!
.model small
.386
.stack 100h
.data
.code
decimal proc near
;print out number given in AX in decimal
xor eax,eax
xor ebx,ebx
mov cx,2 ;this is to accept the base and the decimal value
newchar:
cmp cx,0
jle startConvert
dec cx
mov ah,1 ;This sets up to accept another input from keyboard
int 21h ;this asks for an input and stores it in al
;mov al,0h ;This sets up to accept another input from keyboard
;int 21h ;this asks for an input and stores it in al
;push ax ;stores the second input from keyboard
sub al,30h
jl stloop ;jumps if negative
cmp al,9h
jg stloop ;jumps if greater than
xor ah,ah ;to get only the digit they type
push ax ;this stores the first input from the keyboard
cbw ;convert byte to word
;jmp newchar ;to accept multiple digits
stloop:
mov ah,2
mov dl,0ah
int 21h ;This section inserts a carrige return
mov dl,0dh
int 21h
startConvert: pop bx
push ax ;given to routine to print out
;push bx
push cx
push dx
mov cx,0 ;starts a counter for the number of digits
;mov bx,10 ;base 10 conversion THIS IS THE LINE TO CHANGE FOR DIFFERENT BASES!!!!
nonzero:
xor dx,dx ;same as mov dx,0
div bx
push dx ;this is the remainder of the divider
inc cx ;this will help determine the number of digits produced
or ax,ax ;sets flags to check is ax = 0
jne nonzero ;jump not equal to
write:
pop dx ;gets deciaml digit from stack
add dl,'0' ;ascii value of 30h THIS ALSO NEEDS TO CHANGES FOR DIFFERENT BASES!!!
mov ah,2
int 21h
loop write ;loops number of times in cx, which is the number of digits
pop dx
pop cx
pop bx
pop ax
ret
decimal endp
end decimal
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