I used masm 6.11d to compile works fine. Not sure what
the input port is suppose to return........
Result: a looping 232323232323

John


title hello world in asm

;.386
.model small
.stack 100h
.data

.code
main proc
	;mov ax,@data
	;mov ds,ax

     push bp 
     stosb  
l1:
     
     
     call time_delay	; Here is where I call the delay
routine below.
     call time_delay	; I called it three times to see
if I could  notice a delay
     call time_delay	; a little better.  But I see no
difference between one time and three times.
     

     mov dx,14ch 		;lo
     in al,dx
     mov cl,al
     mov dx,14dh 		;hi
     in al,dx
     
     ;place 2 and 3 b'cos there are no value from the
input port. No idea what is it.
     mov al,2
     call near ptr putc 		;print
     mov al,cl
     mov al,3
     call near ptr putc
     mov ax,120h 		;' '
     mov dx,0
     ;int 14h 
     jmp short l1


; Here is the routine I'm interested in having
evaluated

main endp

putc proc
     and al,0fh
     or  al,30h
     mov ah,1
     mov dx,0
     int 14h 
     mov ah,0eh
     int 10h 
     ret
putc endp

time_delay proc
     mov dx,0ffffh
loop1:
     dec dx
     cmp dx, 0
     jnz loop1
     ret
time_delay endp

end main

--- James Newtons Massmind <jamesnewton@massmind.org>
wrote:

> A PC will do that delay loop so fast that 3 times
> will not show any
> difference from once.
> 
> You are pushing bp at the start and not removing it
> before or as part of the
> return.
> 
> ---
> James.
>  
>  
> 
> > -----Original Message-----
> > From: piclist-bounces@mit.edu 
> > [mailto:piclist-bounces@mit.edu] On Behalf Of Paul
> James E.
> > Sent: 2006 Mar 06, Mon 23:06
> > To: piclist@mit.edu
> > Subject: [OT]: x86 Assembly Language Routine
> Question
> > 
> >  All,
> > 
> >  If there are any x86 programmers out there that
> are familiar 
> > with assembly  language, I would appreciate you
> having a look 
> > at my delay routine and see  if you see any
> obvious reason 
> > why it wouldn't work.
> > 
> >  If I use debug, it seems to work fine.   But if I
> try to let 
> > it run stand
> >  alone, it prints one 16 bit value on the screen,
> and then hangs.
> > 
> >  I don't understand why it isn't working.   If
> anyone can help, I'd 
> >  appreciate it very much.
> > 
> >  Please advise off line to jim@jpes.com
> > 
> > 
> >                                                 
> Thanks and Regards,
> > 
> >                                                   
>      Jim
> > 
> > ;    RTC.asm    print hardware timer values
> > 
> >      org 100h
> >      push bp 
> >      stosb
> > l1:
> >      call near time_delay	; Here is where I call
> the 
> > delay routine 
> > below.
> >      call near time_delay	; I called it three
> times to 
> > see if I could 
> > notice a delay
> >      call near time_delay	; a little better.  But
> I see 
> > no difference 
> > between one time and three times.
> >      mov dx,14ch 		;lo
> >      in al,dx
> >      mov cl,al
> >      mov dx,14dh 		;hi
> >      in al,dx
> >      call near putc 		;print
> >      mov al,cl
> >      call near putc
> >      mov ax,120h 		;' '
> >      mov dx,0
> >      int 14h 
> >      jmp near l1
> > 
> > putc: 
> >      and al,0fh
> >      or al,30h
> >      mov ah,1
> >      mov dx,0
> >      int 14h 
> >      mov ah,0eh
> >      int 10h 
> >      ret
> > 
> > =======================  ; Here is the routine I'm
> interested 
> > in having evaluated
> > 
> > time_delay:
> >      mov dx,0xffff
> > loop1:
> >      dec dx
> >      cmp dx, 0
> >      jnz loop1
> >      ret
> > 
> > --
> > http://www.piclist.com PIC/SX FAQ & list archive
> View/change 
> > your membership options at 
> > http://mailman.mit.edu/mailman/listinfo/piclist
> 
> -- 
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
> 


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