hi , im very new to assembly langauge and im doing a unit at college on it. my assignment is to write a program that would simulate a pelican crosing. ive had a good go at writting it but when i load it into the assembler it comes up with errors.


the sequence should go

TURN ON GREEN LED
DELAY
TURN ON AMBER LED ON
SMALL DELAY
TURN RED LED ON AND SOUND A BUZER
DELAY
FLASH AMBER LED ON AND OF

on the label "buzzerr:" the buzer is turned on and then it jumps to the delay and then turns the buzzer off then jumps down to the delay again, i need to loop this "buzzerr:" for a delay

so what i am after is the buzer to turn on and of for a set time. Im not sure if you need this information but the controller i am using is a T89C51AC2 and it is part of a robot "robo51" and i am programing the 3 leds and the buzer

main1()
 
 {
 
 #pragma asm



start:

                mov P3, #0Dfh                 ;// turn on green led//
                

    
                mov r7, #0ffh                 ;// move ffh to reg 7 ( DELAY)//
outerloop1:            
                

                mov r6, #0ffh                ;// move ffh to reg 6 (DELAY)//
innerloop1:    


                mov r5, #0ffh
inner:        

                djnz r5 inner
                
                djnz r6 innerloop1
                
                djnz r7 outerloop1
                
                mov P3, #0bfh                 ;// turn amber led on //
            
            
            
            
            
                
                mov r7, #3fh                 ;// move ffh to reg 7//
outerloop2:                    

                mov r6, #0ffh                ;// move ffh to reg 6//
innerloop2:                
                
                mov r5, #0ffh
inner2:                
                djnz r5 inner2
                
                djnz r6 innerloop2
                
                djnz r7 outerloop2
                
            
                mov P3, #7fh                  ;// turn red led on //
            
            
            
buzzer:        
            
                mov P2, #80h                  ;// siren on //

                ACALL, delay:                 ;//  (delay)//
                                
                mov P2, #00h                 ;// siren off//
                
                ACALL, delay:                 ;//  (delay)//
                
                



delay:    
                            

                mov r2, #0fh                ;// move ffh to reg 6//
innerloop8:    


                mov r1, #0ffh                ;// move ffh to reg 5//
inner8:        

                djnz r1 inner8
                
                djnz r2 innerloop8
                
                ret
                
                
                
#pragma endasm

}