dac.asm

内容包含4*4键盘、ADC0808、DAC0832和流水灯

ORG 0000H
MAIN:
     MOV DPTR,#0F000H
     MOV A,#00H
LOOP:
     MOVX @DPTR,A
     ;LCALL DELAY
     INC A
     CJNE A,#0FFH,LOOP
LOOPA:
     MOVX @DPTR,A
     ;LCALL DELAY
     DEC A
     JNZ LOOPA
     LJMP LOOP
     RET
DELAY:
     MOV R4,#05H
LOOP1:
     MOV R5,#10H
LOOP2:
     NOP
     NOP
     DJNZ R5,LOOP2
     DJNZ R4,LOOP1
     RET
     END