Table of Contents
- 1 Is end an assembler directive?
- 2 What are the assembler directives?
- 3 What are assembler directives in arm?
- 4 What is purpose of assembler directive?
- 5 What is assembler directives in microprocessor?
- 6 What is a computer assembler?
- 7 What are assembler directives and how do they work?
- 8 What is the difference between sleep_CPU() and sleep_mode()?
- 9 How does the microcontroller enter sleep mode?
Is end an assembler directive?
12.24 END. The END directive informs the assembler that it has reached the end of a source file.
What are the assembler directives?
Assembler directives are directions to the assembler to take some action or change a setting. text directive tells the assembler that the information that follows is program text (assembly instructions), and the translated machine code is to be written to the text segment of memory.
What are assembler directives in arm?
Assembler directives supply data to the program and control the assembly process. Assembler directives enable you to do the following: Assemble code and data into specified sections. Reserve space in memory for uninitialized variables.
What is end in assembler?
Use the END instruction to end the assembly of a program. You can also supply an address in the operand field to which control can be transferred after the program is loaded. It is a simply relocatable expression representing an address in the source module delimited by the END instruction.
What does the end directive do?
2 Answers. The END main marks the end of the file, specifying an entry point for your program (this is optional). The main ENDP denotes the end of your procedure.
What is purpose of assembler directive?
An assembler directive is a message to the assembler that tells the assembler something it needs to know in order to carry out the assembly process; for example, an assemble directive tell the assembler where a program is to be located in memory.
What is assembler directives in microprocessor?
An assembler directive is a statement to give direction to the assembler to perform task of the assembly process. They indicate how an operand or a section of the program is to be processed by the assembler. An assembler supports directives to define data, to organise segments to control procedure, to define macros.
What is a computer assembler?
An assembler is a program that takes basic computer instructions and converts them into a pattern of bits that the computer’s processor can use to perform its basic operations. Some people call these instructions assembler language and others use the term assembly language.
What is assembler in computer Quora?
An assembler is a program which converts assembly language source code into an executable program. This is comparable to a high-level computer language compiler. A compiler converts code into a program.
What is the directive that marks the end of an assembly language program?
Explanation: The directive END is used to denote the completion of the program. Explanation: The directive ENDS is used to end a segment where as the directive END is used to end the program. Explanation: The directive updates location counter to next even address if the current location counter contents are not even.
What are assembler directives and how do they work?
Assembler directives are the instructions provided to the assembler, not the processor as the processor has nothing to do with these instructions. These instructions are also known as pseudo-instructions or pseudo-opcode. Now the question arises what assembler directives specifically do? So, assembler directives:
What is the difference between sleep_CPU() and sleep_mode()?
sleep_cpu() is just one of the building blocks needed in order to put the CPU to sleep. sleep_mode() is the convenience function that does everything on behalf of the user.
How does the microcontroller enter sleep mode?
(For example in ATmega8 you find it in register MCUCR) and then enters sleep mode by execution the sleep assembler instruction. An interrupt will wake up the MCU again. After execution of the ISR, the code will resume at the last instruction of this macro, which clears the sleep enable bit in the MCUCR register.
How do I set the SE bit in sleep_CPU()?
With sleep_cpu () you enter the sleep mode you have selected by calling sleep_mode (). from that documentation page ( http://avr-libc.nongnu.org/user-manual/group__avr__sleep.html ): Select a sleep mode. Put the device into sleep mode. The SE bit must be set beforehand, and it is recommended to clear it afterwards.