微处理器 - 8085 指令集

让我们来看看 8085 微处理器的编程。

指令集是执行某些任务的指令代码。它分为五类。

8085 – 演示程序

现在，让我们看看一些使用上述指令的程序演示 -

两个 8 位数相加

编写一个程序，将 3005H 和 3006H 内存位置的数据相加，并将结果存储在 3007H 内存位置。

问题演示 -

(3005H) = 14H 
   (3006H) = 89H

结果 -

14H + 89H = 9DH

程序代码可以这样编写 -

LXI H 3005H   : "HL points 3005H" 
MOV A, M      : "Getting first operand" 
INX H         : "HL points 3006H" 
ADD M         : "Add second operand" 
INX H         : "HL points 3007H" 
MOV M, A      : "Store result at 3007H" 
HLT           : "Exit program" 

交换内存位置

编写一个程序来交换 5000M 和 6000M 内存位置的数据。

LDA 5000M   : "Getting the contents at5000M location into accumulator" 
MOV B, A    : "Save the contents into B register" 
LDA 6000M   : "Getting the contents at 6000M location into accumulator" 
STA 5000M   : "Store the contents of accumulator at address 5000M" 
MOV A, B    : "Get the saved contents back into A register" 
STA 6000M   : "Store the contents of accumulator at address 6000M" 

按升序排列数字

编写一个程序，将从内存地址 3000H 开始的前 10 个数字按升序排列。

MVI B, 09         :"Initialize counter"      
START             :"LXI H, 3000H: Initialize memory pointer" 
MVI C, 09H        :"Initialize counter 2" 
BACK: MOV A, M    :"Get the number" 
INX H             :"Increment memory pointer" 
CMP M             :"Compare number with next number" 
JC SKIP           :"If less, don’t interchange" 
JZ SKIP           :"If equal, don’t interchange" 
MOV D, M 
MOV M, A 
DCX H 
MOV M, D 
INX H             :"Interchange two numbers" 
SKIP:DCR C        :"Decrement counter 2" 
JNZ BACK          :"If not zero, repeat" 
DCR B             :"Decrement counter 1" 
JNZ START 
HLT               :"Terminate program execution"