微处理器-8085指令集

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📜 微处理器-8085指令集

📅 最后修改于: 2020-12-13 15:27:28 🧑 作者: Mango

让我们看一下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。

S.No.	Instruction & Description
1	Control Instructions Following is the table showing the list of Control instructions with their meanings.
2	Logical Instructions Following is the table showing the list of Logical instructions with their meanings.
3	Branching Instructions Following is the table showing the list of Branching instructions with their meanings.
4	Arithmetic Instructions Following is the table showing the list of Arithmetic instructions with their meanings.
5	Data Transfer Instructions Following is the table showing the list of Data-transfer instructions with their meanings.

8085 –演示程序

现在，让我们看一下使用以上指令的一些程序演示-

加两个8位数字

编写程序以在3005H和3006H存储器位置添加数据，并将结果存储在3007H存储器位置。

问题演示–

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

结果–

14小时以上89H = 9DH

程序代码可以这样写-

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

编写程序以在5000M和6000M内存位置交换数据。

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"

以升序排列数字

编写程序以升序排列存储地址3000H中的前10个数字。

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"