why won't my assembly program compile correctly?

[amdskip]

Never done assembly before so I'm a newb.
Program must do: X = (A-(B-C)) - (D-(E-F)) and we cannot simplify it says.

This must be done in old style if that makes sense.

Here's what I have:

.model tiny
.code startupcode
mov ax,b
sub ax,c
mov bx,a
sub bx,ax
mov cx,e
sub cx,f
mov dx,d
sub dx,cx
sub bx,dx
mov x,bx
exitcode
a dw 4
b dw 3
c dw 1
d dw 2
e dw 1
f dw 0
x dw 0
end

 

[Crusty]

|
|
|
v

 

[Lico]

.model tiny
.code startupcode
mov ax,b
sub ax,c
mov bx,a
sub bx,ax
mov cx,e
sub cx,f
mov dx,d
sub dx,cx
sub bx,dx
mov x,bx
exitcode
a dw 4
b dw 3
c dw 1
d dw 2
e dw 1
f dw 0
end

x is undefined?

Lico

 

[Crusty]

Originally posted by: Lico

.model tiny
.code startupcode
mov ax,b
sub ax,c
mov bx,a
sub bx,ax
mov cx,e
sub cx,f
mov dx,d
sub dx,cx
sub bx,dx
mov x,bx
exitcode
a dw 4
b dw 3
c dw 1
d dw 2
e dw 1
f dw 0
end

x is undefined?

Lico

doh! 😛 I didn't even catch that!

 

[Mallow]

lol, doh!

 

[ThisIsMatt]

You do realize that there is more than one assembly language, right? 😛

 

[Ameesh]

Originally posted by: ThisIsMatt
You do realize that there is more than one assembly language, right? 😛

i dont think he does.

 

[amdskip]

So do I define x as 0?

 

[Crusty]

yeah.
x dw 0

will set aside one "word" of memory and fill it with 0.

 

[Crusty]

dp 😱

 

[Supermercado]

k, who wants to play fix the compiler that I'm working on? 😛

 

[Bassyhead]

next time mention the type of assembly 😉