Djnz r6 dl0
WebApr 26, 2016 · movx @dptr,a mov dptr,#0fdffh mov a,#00h movx @dptr,a mov a,#04h movx @dptr,a setbp1.4 acall delay5 clr p1.4 acall delay5 ajmp delay5:;10us mov r6,#01h dl9: … WebDec 1, 2011 · mov r6,#10 dl0: mov r5,#50 djnz r5,$ djnz r6,dl0 ret table: db 0c0h,0f9h,0a4h,0b0h,99h ;共阳极0-9显示代码 db 92h,82h,0f8h,80h,90h end 中断方式: …
Djnz r6 dl0
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WebAug 9, 2011 · 关注. $是一个地址记录器,具体作用就是,R6的内容减一不为零,跳转到$,而这个$又表示当前行,就是说,R6不为零,我本来要跳转了,但是跳转的目的地就是当前 … Web单片机—DJNZ 指令练习. 1、 延时 假设fosc=12MHz,则一个机器周期为1us,若要求达到10ms延时。. 2、 闪烁灯 在P1.0端口上接一个发光二极管L1,使L1不停一亮一灭, …
WebFeb 6, 2024 · 1 实验目的 1 熟悉Proteus软件和Keil软件的使用方法 2 熟悉单片机应用电路的设计方法 3 掌握单片机并行I O口的直接应用方法 4 掌握单片机应用程序的设计和调试方 … Web注:以下程序可能用到的mov和nop为单周期指令,djnz和ret为双周期指令 delay: mov r6,#03h dl0: mov r5, ( ) djnz r5,$ djnz r6,dl0 ret A、#73H B、#96H c 、#0c8H D …
WebDJNZ R6,BACK. CLR TR1 // stops Timer(counter)1. CLR TF0 // clears Timer Flag 0. CLR TF1 // clears Timer Flag 1. ACALL DLOOP // Calls subroutine DLOOP for displaying the count. SJMP MAIN // jumps back to the main loop. DLOOP: MOV R5,#100D. BACK1: MOV A,TL1 // loads the current count to the accumulator. MOV B,#100D WebApr 9, 2014 · 2024.09.30 回答. 首先明确机器执行一条指令耗时大概是1us那么延时10ms的程序如下:MOV AX,50L1:MOV BX,100L2:DEC BX JNZ L2DEC AXJNZ L1执行完之后时 …
WebMar 17, 2014 · When testing the C8051F560 with DJNZ in a timing loop I find that the DJNZ R5,$ gives a delay of 4 cycles (3 when R5 = 0), rather than the delay of 3 cycles in the data sheet. The machine code for the DJNZ here is DDh so it is the register version. Testing the direct version gave DJNZ (machine code FDh) as 5 cycles rather than the delay of 4 …
Web0x09 mov a,r7 0x0a mov t,a 0x0c djnz r6,$0010 First, we reset the timer. ... If r6 gets to zero between trigger events, it will roll over to 255, and the measurement will be meaningless. That’s unacceptable, and something must be done to account for it. One solution to the timer problem would be to use a 16-bit counter. golden retriever national specialty 2023WebNov 28, 2024 · AT89S52之汇编实现串行通信-只发送数据. ;中断方式,硬件自动清除定时器1中断,即清除TF1标志位 ;数据从TXD端输出,当数据写入发送缓冲器SBUF后,启动发送 … hdmi 200 ft cableWeb单片机试验之DA转换试验. 1、掌握单片机与DAC0832勺接口设计方法. 2、掌握Proteus软件与Keil软件的使用方法. 1、用Proteus软件画出电路原理图,在单片机的外部扩展片外三总 … golden retriever mix with king charles