code urgently needed for 8051 stopwatch using seven segment...

gemini85

gaurav here...
assembly code urgently needed for 8051 stopwatch using seven segment.
plz send as soon as possible if u hav any related articles also will do. mail me at gemini_gaurav85@yahoo.com

gemini85

[b][red]This message was edited by gemini85 at 2006-10-14 23:50:11[/red][/b][hr]
org 0000h

start: mov dptr,#300h
mov r3,#0
mov r2,#0
mov a,#40h
mov r5,#9
mov p1,a
mov p2,a
setb p3.3
acall timer

port1: mov a,r2
mov r4,a
movc a,@a+dptr
jnb p3.3,paused
mov p1,a
acall timer
inc r2
cjne a,#01h,port1

port2: mov a,r3
mov r5,a
movc a,@a+dptr
mov p2,a
mov p1,#40h
acall timer
inc r3
mov r2,#0
cjne a,#01h,port1

last: mov a,r2
mov r4,a
movc a,@a+dptr
jnb p3.3,paused
mov p1,a
acall timer
inc r2
cjne a,#01h,last
nop

timer: mov tmod,#12h
mov r0,#20
setb tcon.4
up: mov th1,4bh
mov tl1,#0f0h
setb tcon.6
here: jnb tcon.7,here
clr tcon.6
clr tcon.7
djnz r0,up
clr tcon.4
ret

paused: mov a,r4
movc a,@a+dptr
mov p1,a
mov a,r5
movc a,@a+dptr
mov p2,a
nop

org 300h
table: db 73h,24h,21h,13h,09h,08h,63h,00h,01h,40h
end

|||||GAURAV SAXENA |||||