Table of Contents
- 1 What does an SLT instruction do when it is executed?
- 2 What are the limitations of assembly language?
- 3 What is the purpose of having various address modes?
- 4 How is assembly language different from high level language?
- 5 What are the difficulties associated with the machine level and assembly language?
- 6 How addressing modes affect the instruction pipelining?
- 7 Is assembly language architecture dependent?
- 8 Why is the low level assembly language important?
- 9 What are the source lines in assembly language?
What does an SLT instruction do when it is executed?
It subtracts the register selected by the rt field of the instruction from the register selected by the rs field of the instruction, and sets the register selected by the rd field of the instruction to Ox00000001 if the result is negative.
What are the limitations of assembly language?
Below mentioned are the disadvantages:
- It takes a lot of time and effort to write the code for the same.
- It is very complex and difficult to understand.
- The syntax is difficult to remember.
- It has a lack of portability of program between different computer architectures.
What is the purpose of having various address modes?
What is the purpose of having various address modes? Multiple addressing modes allow us to specify a much larger range of locations than if we were limited to using one or two modes.
How does SLL work MIPS?
The sll instruction isn’t limited to just shifting by 1 bit; you can specify a shift amount in the range 0.. 31 (a shift by 0 might seem useless, but SLL $zero, $zero, 0 is used to encode a NOP on MIPS). A logical left shift by N bits can be used as a fast means of multiplying by 2^N (2 to the power of N).
What is SRA MIPS?
SRA — Shift right arithmetic Description: Shifts a register value right by the shift amount (shamt) and places the value in the destination register. The sign bit is shifted in.
How is assembly language different from high level language?
The assembly language is a machine-dependent type of language. A high-level language is a machine-independent type of language. The program that we write for one processor in an assembly language will not run on any other processor type. It means that it is processor-dependent.
What are the difficulties associated with the machine level and assembly language?
the machine level language is less readable than higher level language. the machine level language low level language Therefore it is time consuming tedious and error prone. Assembly language is difficult to learn because it is required a deep understanding off system architecture.
How addressing modes affect the instruction pipelining?
Degradation of performance is an instruction pipeline may be due to address dependency where operand address cannot be calculated without available informatition needed by addressing mode for e.g. An instructions with register indirect mode cannot proceed to fetch the operand if the previous instructions is loading the …
Why addressing modes are required in microcontroller?
Addressing mode is a way to address an operand. Operand means the data we are operating upon (in most cases source data). It can be a direct address of memory, it can be register names, it can be any numerical data etc. I will explain this with a simple data move instruction of 8051.
Why are high level languages known as machine independent?
High level programs require compilers/interpreters to translate source code to machine language. We can compile the source code written in high level language to multiple machine languages. Thus, they are machine independent language. We can develop a variety of applications using high level language.
Is assembly language architecture dependent?
Assembly language instructions are architecture dependent. For example, Intel family of processors may understand one type of assembly language instructions. The opcode of an assembly language instruction may change from architecture to architecture.
Why is the low level assembly language important?
So, the low-level assembly language is designed for a specific family of processors that represents various instructions in symbolic code and a more understandable form. How a program accesses external devices.
What are the source lines in assembly language?
The assembler parses and assembles assembly language to produce object code. Each line of assembly language source code has this general form: All three sections of the source line are optional. symbol is usually a label. In instructions and pseudo-instructions it is always a label. In some directives it is a symbol for a variable or a constant.
What is the structure of assembly language modules?
Home » Structure of Assembly Language Modules » Syntax of source lines in assembly language The assembler parses and assembles assembly language to produce object code. Each line of assembly language source code has this general form: All three sections of the source line are optional. symbol is usually a label.
What are jump and loop instructions in assembly language?
SECTION – I: JUMP AND LOOP INSTRUCTIONS: The various types of control transfer instructions in assembly language include conditional and unconditional jumps and call instructions. The flow of a program wil be proceed sequentially from instruction to instruction, unless a control transfer instruction is executed.