For generating sawtooth wave form

ALP Program for interfacing DAC with 8086 using 8255 

       For generating sawtooth wave form

ASSUME CS : CODE

CODE SEGMENT

START:    MOV AL, 80H

                   OUT CWR, AL

                   MOV AL, 00H

LOOP1:    OUT PA_ADDR, AL

                   INC AL

                   CMP AL, FFH

                   JNZ LOOP1

                   JMP LOOP1

                   MOV AH, 4CH

                   INT 21H

CODE ENDS

END START