What is temporary register in microprocessor?
Table of Contents
- 1 What is temporary register in microprocessor?
- 2 How many temporary registers are there?
- 3 Which are the temporary registers in 8085 microprocessor?
- 4 Which register set is known as temporary registers?
- 5 What are general purpose registers in 8086 microprocessor?
- 6 Why does the 8086 have 16-bit registers and not 8-bit?
What is temporary register in microprocessor?
Temporary register is also an 8-bit register which the programmer can’t access at all. It is temporarily stored inside 8085 microprocessor which is 8 bit operand to the instruction set. The result is stored in the accumulator, and the flags (flip-flops) are set or reset according to the result of the operation.
What are temporary registers?
A temporary register is the only register that can be read and written more than once in a single instruction. Each temporary register has single-write and triple-read access. Therefore, an instruction can have as many as three temporary registers in its set of input source operands.
How many temporary registers are there?
this means there are 10 temporary registers that can be used without worrying about saving and restoring their contents. The saved registers are named $s0 to $s7….Registers.
| Number | Name | Comments |
|---|---|---|
| $0 | $zero | Always zero |
| $1 | $at | Reserved for assembler |
| $2, $3 | $v0, $v1 | First and second return values, respectively |
Which of the following registers are temporary registers?
W and Z are two 8-bit temporary registers of 8085 microprocessor, which is not accessible to the user. They are exclusively used for the internal operation by the microprocessor.
Which are the temporary registers in 8085 microprocessor?
What are the types of registers in microprocessor?
In the 8086 Microprocessor, the registers are categorized into mainly four types:
- General Purpose Registers.
- Segment Registers.
- Pointers and Index Registers.
- Flag or Status Register.
Which register set is known as temporary registers?
Following is the list of some of the most common registers used in a basic computer:
| Register | Symbol | Function |
|---|---|---|
| Accumulator | AC | Processor register |
| Instruction register | IR | Holds instruction code |
| Program counter | PC | Holds address of the instruction |
| Temporary register | TR | Holds temporary data |
How many temporary registers are there in 8085 microprocessor Mcq?
The 8085 has six general-purpose registers to store 8-bit data; these are identified as- B, C, D, E, H, and L. These can be combined as register pairs – BC, DE, and HL, to perform some 16-bit operation. These registers are used to store or copy temporary data, by using instructions, during the execution of the program.
What are general purpose registers in 8086 microprocessor?
General purpose registers are used to store temporary data within the microprocessor. There are 8 general purpose registers in 8086 microprocessor. AX – This is the accumulator. It is of 16 bits and is divided into two 8-bit registers AH and AL to also perform 8-bit instructions.
What is the use of accumulator in 8086 microprocessor?
It is generally used for arithmetical and logical instructions but in 8086 microprocessor it is not mandatory to have accumulator as the destination operand. BX – This is the base register.
Why does the 8086 have 16-bit registers and not 8-bit?
The reason is that the 8086 has 16-bit registers, but four of them can also be accessed as 8-bit registers, as shown below. For example, the 16-bit accumulator A can be accessed as an 8-bit AH (accumulator high) register and an 8-bit AL (accumulator low) register.
How many transistors are there in 8086 microcontroller?
In the 8086, two coupled inverters hold a single bit in the register. This circuit is stable in either the 0 or 1 state. Three transistors are added to make a usable register cell from the inverter pair. 4 One transistor selects the cell for reading, another transistor selects the cell for writing, and the third amplifies the signal when reading.