What does EQU do in assembly?
The EQU instruction assigns absolute or relocatable values to symbols. Use it to: Assign single absolute values to symbols. Assign the values of previously defined symbols or expressions to new symbols, thus letting you use different mnemonics for different purposes.
What is EQU directive in assembly?
The EQU directive gives a symbolic name to a numeric constant, a register-relative value or a PC-relative value.
What do you mean by EQU and $-?
The action of EQU is to define the given label name to the value of its (only) operand. This definition is absolute, and cannot change later. So, for example, message db ‘hello, world’ msglen equ $-message. defines msglen to be the constant 12. msglen may not then be redefined later.
What is assembly language programming in 8051?
Assembly Language is a pseudo-English representation of the Machine Language. The 8051 Microcontroller Assembly Language is a combination of English like words called Mnemonics and Hexadecimal codes. It is also a low level language and requires extensive understanding of the architecture of the Microcontroller.
What is EQU statement?
The EQU instruction assigns absolute or relocatable values to symbols. Use it to: Assign the values of previously defined symbols or expressions to new symbols, thus letting you use different mnemonics for different purposes.
What does EQU stand for?
EQU
| Acronym | Definition |
|---|---|
| EQU | Equal to |
| EQU | Equivalent Unit |
| EQU | Extremely Qualified User |
| EQU | Estimated Quarterly Usage |
What is the function role of EQU directive?
The EQU directive only tells the assembler to substitute a value for a symbol or label, and doesn’t involve any type of ROM or RAM. EQU directives are typically placed at the beginning of an assembly program.
Is EQU a word?
No, equ is not in the scrabble dictionary.
How many instructions are there in 8051?
The microcontroller 8051 instructions set includes 110 instructions, 49 of which are single byte instructions, 45 are two bytes instructions and 17 are three bytes instructions. The instructions format consists of a function mnemonic followed by destination and source field. Data transfer group. Arithmetic group.
What is EQU in pic?
The EQU directive creates a text macro which tells the assembler to perform a text substitution before actually assembling the program. In A equ B, the symbol A is replaced with the symbol B in the source file.
Is EQU Scrabble word?
What is 8051 programming?
The 8051 microcontroller consists of various kinds of assembly directives to give the direction to the control unit. The most useful directives are 8051 programming, such as: ORG(origin): This directive indicates the start of the program.
How does the 8051 microcontroller perform multiplication operation?
Example, multiplication operation is performed by the operands that are multiplied by the operand. The assembling directives give the directions to the CPU. The 8051 microcontroller consists of various kinds of assembly directives to give the direction to the control unit.
What are the different types of CISC instructions in 8051?
In case of the 8051 programming different types of CISC instructions include: The arithmetic instructions perform the basic operations such as: The CPU executes the instructions based on the condition by checking the single bit status or byte status. The 8051 microcontroller consists of various conditional instructions such as:
What is UART communication in 8051 microcontroller?
The 8051 microcontroller consist of UART/USART serial communication and the signals are transmitted and received by Tx and Rx pins. The UART communication transfers the data bit-by-bit serially. The UART is a half-duplex protocol that transfers and receives the data, but not at the same time.