The registers found on the 8086 and all subsequent x86 processors are the following: AX, BX, CX, DX, SP, BP, SI, DI, CS, DS, SS, ES, IP and FLAGS. These are all 16 bits wide.
Which register is used by 16-bit?
Segment Registers
A 16-bit Data Segment register or DS register stores the starting address of the data segment. Stack Segment − It contains data and return addresses of procedures or subroutines. It is implemented as a ‘stack’ data structure.
How many bits are in 16 registers?
Bookmark this question. Show activity on this post. The LC-3 has 16 registers, each being 64 bits long, and 32-bit instructions.
Why data register is 16-bit?
The size of these registers is 16 bits because the memory addresses are 16 bits. They are: Program Counter This register is used to sequence the execution of the instructions. The function of the program counter is to point to the memory address from which the next byte is to be fetched.
Are all registers 8-bit?
Most of the can be broken down to 16 or even 8 bits register. As the title says, general register are the one we use most of the time Most of the instructions perform on these registers. They all can be broken down into 16 and 8 bit registers.
What are 16 bits called?
The fundamental data types of the Intel Architecture are bytes, words, doublewords, and quadwords (see Figure 29-1). A byte is eight bits, a word is 2 bytes (16 bits), a doubleword is 4 bytes (32 bits), and a quadword is 8 bytes (64 bits).
What is the name of 16-bit registers in 8085?
In addition, it has two 16-bit registers: the stack pointer and the program counter. They are described below in brief. The 8085 has six general – purpose registers to store 8-bit data; these are identified as B, C, D, E, H and L as shown in the figure.
How many bits is a register?
A register is a part of the processor that can hold a bit pattern. On the MIPS, a register holds 32 bits. There are many registers in the processor, but only some of them are visible in assembly language. The others are used by the processor in carrying out its operations.
How many 16-bit registers are there in 8086?
The 8086 has eight more or less general 16-bit registers (including the stack pointer but excluding the instruction pointer, flag register and segment registers). Four of them, AX, BX, CX, DX, can also be accessed as twice as many 8-bit registers (see figure) while the other four, SI, DI, BP, SP, are 16-bit only.
How many numbers is 16 bits?
Thus a 16-bit word can be used for positive numbers in the range 0 to 65,535. If negative numbers are required, the most significant bit is used to represent the sign, a 1 representing a negative number and a 0 a positive number; the format used for negative numbers is two’s complement.
Which is 12 bit register?
Register C is 12 bits long. This allows for entry of opcodes into ram. This register is put into effect by using a 4-bit Binary Counter, an Inverter, and a Nand gate to create a ring counter.
What is 32-bit register?
A 32-bit register can store 232 different values. The range of integer values that can be stored in 32 bits depends on the integer representation used.
Which register does not have 16 number of bits?
A 32-bit register can store 232 different values. The range of integer values that can be stored in 32 bits depends on the integer representation used.
What is better 8-bit or 16-bit?
16-Bit is not ideal for printing as the printer cannot read all the available colors accurately. That’s why 8-Bitit JPEG works just fine for most printing applications. 16-Bit is the best format for editing photos in software without losing image detail and color depth.
Is a 16-bit register for 8085 microprocessor Mcq?
Stack Pointer: The stack pointer in the 8085 microprocessor is a 16-bit register that stores the address of the top of stack memory.
What are the 8-bit registers?
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.
References:
- https://www.tutorialspoint.com/assembly_programming/assembly_registers.htm
- https://stackoverflow.com/questions/66649682/how-many-bits-will-be-available-for-the-immediate-value-if-there-are-16-register
- https://www.arsdcollege.ac.in/wp-content/uploads/2020/04/8085_Notes_a.pdf
- https://www.eecg.utoronto.ca/~amza/www.mindsec.com/files/x86regs.html
- https://cse.unl.edu/~goddard/Courses/CSCE351/IntelArchitecture/IntelDataType.pdf
- https://www.lkouniv.ac.in/site/writereaddata/siteContent/202004021910157352aksingh_phy_microprocessor.pdf
- https://chortle.ccsu.edu/assemblytutorial/Chapter-10/ass10_4.html
- https://en.wikipedia.org/wiki/Intel_8086
- https://www.sciencedirect.com/topics/engineering/binary-word
- https://hackaday.io/project/28647-boxer-1-ttl-computer/log/76984-the-12-bit-register
- https://en.wikipedia.org/wiki/32-bit_computing
- https://www.tutorialspoint.com/embedded_systems/es_registers.htm
- https://shotkit.com/8-bit-vs-16-bit/
- https://testbook.com/question-answer/which-of-the-following-is-a-16-bit-register-in-808–5f4f17677d7e7b0d10924e73
- https://www.geeksforgeeks.org/registers-8085-microprocessor/