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Jb instruction in 8051 example

 
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MessagePosté le: Mar 2 Jan - 07:34 (2018)    Sujet du message: Jb instruction in 8051 example Répondre en citant

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jnb instruction in 8051 example






JB. The JB instruction branches to the address specified in the second operand if the value of the bit specified in the first operand is 1. The bit that is tested is not modified. No flags are affected by this instruction.
ANL - Bitwise AND; CJNE - Compare and Jump if Not Equal; CLR - Clear Register; CPL - Complement Register; DA - Decimal Adjust; DEC - Decrement Register; DIV - Divide Accumulator by B; DJNZ - Decrement Register and Jump if Not Zero; INC - Increment Register; JB - Jump if Bit Set; JBC - Jump if Bit Set and Clear Bit
The 8051 contains a suite of instructions which, as a group, are referred to as "conditional branching" instructions. These instructions cause program execution to follow a non-sequential path if a certain condition is true. Take, for example, the JB instruction. This instruction means "Jump if Bit Set." An example of the JB
2. 0509C–8051–07/06. Table 1-1. Instruction Set Summary. Note: Key: [2B] = 2 Byte, [3B] = 3 Byte, [2C] = 2 Cycle, [4C] = 4 Cycle, Blank = 1 byte/1 cycle. 0. 1. 2. 3. 4. 5. 6. 7. 0. NOP. JBC bit,rel. [3B, 2C]. JB bit, rel. [3B, 2C]. JNB bit, rel. [3B, 2C]. JC rel. [2B, 2C]. JNC rel. [2B, 2C]. JZ rel. [2B, 2C]. JNZ rel. [2B, 2C]. 1. AJMP. (P0).
12 Jul 2014
The 8051 contains a suite of instructions which, as a group, are referred to as "conditional branching" instructions. These instructions cause program execution to follow a non-sequential path if a certain condition is true. Take, for example, the JB instruction. This instruction means "Jump if Bit Set." An example of the JB
In this section we first discuss how to perform a looping action in the 8051 and then talk about jump instructions, both conditional and unconditional. Example 3-2. What is the maximum number of times that the loop in Example 3-1 can be repeated? Solution: Since R2 holds the count and R2 is an 8-bit register, it can hold
3.1 Types of instructions. Architecture and programming of 8051 MCUs. Table of. Contents The first part of each instruction, called MNEMONIC refers to the operation an instruction performs (copy, addition, logic operation etc.). Mnemonics are abbreviations of the name of operation being executed. For example: INC R1
JB - Jump if Bit Set - JB 8051 / 8052 Microcontroller Instruction Set - Instructions Set of 8051 / 8052 - 8052 Microcontroller Tutorial - Instruction Set of 8051 / 8052 - ACALL, ADD, ADDC, AJMP, ANL, CJNE, CLR, CPL, DA, DEC, DIV, DJNZ, INC, JB, JBC, JC, JMP, JNB, JNC, JNZ, JZ, LCALL, LJMP, MOV, MOVC, MOVX, MUL,
20 Nov 2012 The JB instruction in 8051 assembler jumps to the address indicated by the label in the second operand if the bit specified by the first operand is set. So in your case it will jump to MOV P0,#0FFH if P0.7 is set. The JB label instruction you are referring to is an 8086 instruction (jump below based on the result

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