适合单片机初学者制作的16×16汉字显示屏081301.doc

以下是一段程序实例，显示 “迎接北京2008奥运！”并缓慢向左移动。源程序如下： ORG 0000H SJMP START ORG 000BH AJMP ZD ORG 0030HSTART: MOV SCON,#00H；设串口为方式0 MOV SP,#60H MOV 20H,#00H MOV 21H,#00H MOV R1,#0FFH MOV R7,#02H MOV R4,#80H MOV TMOD,#02H；设T0为方式2定时（8位自动重装载方式） MOV TH0,#01H MOV TL0,#01H SETB EA SETB ET0 SETB TR0L1: MOV R6,#00H；列扫描计数清零 MOV R0,#00H MOV A,R4D1: ACALL XIANSHI；左8位列扫描程序 MOV P2,A ACALL YS5MS RR A MOV P2,#00H INC R6 CJNE R6,#08H,D1 MOV A,R4D2: ACALL XIANSHI；右8位列扫描程序 MOV P0,A ACALL YS5MS RR A MOV P0,#00H INC R6 CJNE R6,#10H,D2 LJMP L1ZD: PUSH ACC；中断程序 DJNZ R1,BACK MOV R1,#0FFH DJNZ R7,BACK MOV R7,#02H MOV A,DPL；调整数据指针 ADD A,#02H MOV DPL,A MOV A,DPH ADDC A,#00H MOV DPH,ABACK: POP ACC RETIXIANSHI:PUSH ACC MOV R2,#02HD3: MOV A,#TAB；读取表首地址 ADD A,R0 MOVC A,A+DPTR；读取数据并送显示 MOV SBUF,A JBC TI,$ CLR TI INC R0 DJNZ R2,D3 CJNE A,#0F0H,D4；检测汉字是否送完 MOV DPL,#00H MOV DPH,#00HD4: POP ACC RETYS5MS: MOV R3,#02H；延时5毫秒D5: MOV R5,#248 DJNZ R5,$ DJNZ R3,D5 RETTAB: DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H; ,显示用表格 DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H; , DB 40H,40H,41H,20H,0CEH,1FH,04H,20H,00H,40H,0FCH,47H,04H,42H,02H,41H; DB 02H,40H,0FCH,5FH,04H,40H,04H,42H,04H,44H,0FCH,43H,00H,40H,00H,00H;迎, DB 08H,02H,08H,42H,08H,81H,0FFH,7FH,88H,02H,68H,82H,24H,8AH,2CH,4EH; DB 0B4H,53H,25H,32H,26H,12H,34H,2EH,2CH,42H,24H,0C2H,20H,02H,00H,00H;接, DB 00H,10H,20H,30H,20H,18H,20H,08H,20H,04H,0FFH,7FH,00H,00H,00H,00H; DB 00H,00H,0FFH,3FH,40H,40H,20H,40H,30H,40H,18H,40H,10H,78H,00H,00H;北, DB 00H,00H,04H,20H,04H,10H,0E4H,19H,24H,0DH,24H,41H,25H,81H,26H,7FH; DB 24H,01H,24H,01H,24H,05H,0E4H,0DH,06H,38H,04H,10H,00H,00H,00H,00H;京, DB 00H,00H,70H,30H,08H,28H,08H,24H,08H,22H,88H,21H,70H,30H,00H,00H;2, DB 00H,00H,0E0H,0FH,10H,10H,08H,20H,08H,20H,10H,10H,0E0H,0FH,00H,00H;0, DB 00H,00H,0E0H,0FH,10H,10H,08H,20H,08H,20H,10H,10H,0E0H,0FH,00H,00H;0, DB 00H,00H,70H,1CH,88H,22H,08H,21H,08H,21H,88H,22H,70H,1CH,00H,00H;8, DB 00H,80H,00H,84H,0FEH,45H,22H,44H,2AH,25H,0B2H,14H,63H,0CH,0FEH,07H; DB 62H,0CH,0B2H,14H,0AAH,25H,22H,24H,0FEH,45H,00H,0C4H,00H,44H,00H,00H;奥, DB 40H,40H,41H,20H,0CEH,1FH,04H,20H,00H,28H,20H,4CH,22H,4AH,0A2H,49H; DB 62H,48H,22H,4CH,0A2H,44H,22H,45H,22H,5EH,22H,4CH,20H,40H,00H,00H;运, DB 00H,00H,00H,00H,00H,00H,0F0H,5FH,00H,00H,00H,00H,00H,00H,00H,00H; DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H