The 8051 Microcontroller and Embedded Systems, Volume 1
Prentice Hall, 2000 - Digital control systems - 435 pages
For courses teaching the 8051 Microcontoller.
This book uses a step-by-step approach to teach the fundamentals of assembly language programming and interfacing of the 8051 microcontroller. It uses many examples to clarify concepts. Simple, concise examples are utilized to show what action each instruction performs, then a sample is provided to show its application. This text provides a comprehensive understanding of the internal organization of the 8051 registers and resources in a way that sheds the student's fear of assembly language. Whether students become designers of stand-alone systems or complex embedded systems, they will find this text a useful resource.
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Look at the fol- lowing variation of the same program : MOV A , # 25H ; load one operand into A ( A = 25H ) ADD A , # 34H ; add the second operand 34H to A In the above case , while one register contained one value , the second value ...
As we can see , the opcode and operand for each instruction are listed on the left side of the list file . ORG OH 1 0000 2 0000 7D25 MOV R5 , # 25H ; start at location 0 ; load 25H into R5 3 0002 7F34 MOV R7 , # 34H 4 0004 7400 5 0006 ...
AND ANL destination , source ; dest = dest AND source This instruction will perform a logical AND on the two operands and place the result in the destination . The des- tination is normally the accumulator . The source operand can be a ...
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The 8051 Microcontrollers
THE 8051 MICROCONTROLLERS 223 Section 1 1 Microcontrollers and Embedded Processors
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