osc.asm

(1)完成键盘

CS0832  equ    8000h

        org    0
        jmp    Main
        
SinData:
        DB    0C0H, 0C3H, 0C6H, 0C9H, 0CCH, 0CFH, 0D2H, 0D5H
        DB    0D8H, 0DBH, 0DEH, 0E0H, 0E3H, 0E6H, 0E8H, 0EAH
        DB    0EDH, 0EFH, 0F1H, 0F3H, 0F5H, 0F6H, 0F8H, 0F9H
        DB    0FBH, 0FCH, 0FDH, 0FEH, 0FEH, 0FFH, 0FFH, 0FFH
        DB    0FFH, 0FFH, 0FFH, 0FFH, 0FEH, 0FEH, 0FDH, 0FCH
        DB    0FBH, 0F9H, 0F8H, 0F6H, 0F5H, 0F3H, 0F1H, 0EFH
        DB    0EDH, 0EAH, 0E8H, 0E6H, 0E3H, 0E0H, 0DEH, 0DBH
        DB    0D8H, 0D5H, 0D2H, 0CFH, 0CCH, 0C9H, 0C6H, 0C3H
        DB    0C0H, 0BCH, 0B9H, 0B6H, 0B3H, 0B0H, 0ADH, 0AAH
        DB    0A7H, 0A4H, 0A1H, 9FH, 9CH, 99H, 97H, 95H
        DB    92H, 90H, 8EH, 8CH, 8AH, 89H, 87H, 86H
        DB    84H, 83H, 82H, 81H, 81H, 80H, 80H, 80H
        DB    80H, 80H, 80H, 80H, 81H, 81H, 82H, 83H
        DB    84H, 86H, 87H, 89H, 8AH, 8CH, 8EH, 90H
        DB    92H, 95H, 97H, 99H, 9CH, 9FH, 0A1H, 0A4H
        DB    0A7H, 0AAH, 0ADH, 0B0H, 0B3H, 0B6H, 0B9H, 0BCH
        
Delay: 
        mov   B, a
DelayLoop:
        nop
        nop
        nop
        nop
        djnz  B, DelayLoop
        ret
        
OutputDA:
        push  dph
        push  dpl
        mov   dptr, #CS0832
        movx  @dptr, a
        pop   dpl
        pop   dph
        ret        
        
ShowSin:
        mov   r0, #0
        mov   r1, #80h
        mov   dptr, #SinData
ShowSinLoop:
        mov   a, r0
        movc  a, @a+dptr
        call  OutputDA
        inc   r0
        
        mov   a, #40
        call  Delay

        djnz  r1, ShowSinLoop
        ret
                
ShowTri:
        mov   r0, #80h
        mov   r1, #80h
ShowTriLoop:
        mov   a, r0
        call  OutputDA
        inc   r0
        
        mov   a, #40
        call  Delay

        djnz  r1, ShowTriLoop
        ret

ShowSq:
        mov   a, #80h
        call  OutputDA
        mov   r0, #10
D1:
        mov   a, #200
        call  Delay
        djnz  r0, D1
                
        mov   a, #0ffh
        call  OutputDA
        mov   r0, #10
D2:
        mov   a, #200
        call  Delay
        djnz  r0, D2
        ret

Main:
        mov   r3, #100
MD1:
        call  ShowSin
        djnz  r3, MD1
                
        mov   r3, #100
MD2:
        call  ShowTri
        djnz  r3, MD2
        
        mov   r3, #100
MD3:
        call  ShowSq
        djnz  r3, MD3

        jmp   Main
        
        end