The Intel 8087, announced in 1980, was the first x87 floating-point coprocessor for the 8086 line of microprocessors. The purpose of the 8087 was to speed up computations for floating-point arithmetic, such as addition, subtraction, multiplication, division, and square root.
What is numeric coprocessor?
Definition: math coprocessor A mathematical circuit that performs high-speed floating point operations. Also called a “floating point unit” (FPU), the math coprocessor may be a stand-alone chip or circuits built into the CPU.
What are the functional parts of Control Unit in 8087?
8087 Architecture is divided into two groups, i.e., Control Unit (CU) and Numeric Extension Unit (NEU). The control unit handles all the communication between the processor and the memory such as it receives and decodes instructions, reads and writes memory operands, maintains parallel queue, etc.
What are the different data types of 8087?
The standard specifies and the 8087 supports three floating-point data types: Real (single precision), Long Real (double precision) and Tem- porary Real (extended precision). All formats are binary and each has a biased exponent.
What are the features of 8087?
Features of 8087:
- It is a high performance numeric co-processor.
- It can work on integer, decimal and real type numbers.
- It has an instruction set capable of doing complex arithmetic and trigonometric calculations.
- It follows IEEE floating-point standard.
What is a coprocessor in computer architecture?
A coprocessor is a computer processor used to supplement the functions of the primary processor (the CPU). Operations performed by the coprocessor may be floating point arithmetic, graphics, signal processing, string processing, cryptography or I/O interfacing with peripheral devices.
Which pin belongs to 8087 coprocessor?
8086
8087 treats 8086 instructions as NOP. ESC is used as a prefix for 8087 instructions. When as instruction with ESC prefix (5 MSB bits as 11011) is encountered, 8087 is activated. The ESC instruction is decoded by both 8086 and 8087.
What are the numeric coprocessors used with 8086 and 80386?
Solution: Explanation: 8087 is the coprocessor for both 8086 and 8088. 8089 is also a coprocessor of 8086 and 80888.
What is the role of tag word in the architecture of 8087?
Tag word: 8087 contains 2 tag bits for each stack register. These tag bits indicate the type of number stored in the respective register.
How stack is operated in 8087?
Register stack: 8087 has eight 80 bit numeric data registers available to the programmer. These registers operate in LIFO (Last in First Out) manner hence they are called as the register stack of 8087. Each register is 80 bits as the data is stored internally in the temporary-real format.
How many pins does 8087 have?
40 pin
How many pins does 8087 have? Explanation: All 8087 models have a 40 pin DIP which is operated in 5V. 11.
What is 8088087 numeric data processor?
8087 numeric data processor is also known as Math co-processor, Numeric processor extension and Floating point unit. It was the first math coprocessor designed by Intel to pair with 8086/8088 resulting in easier and faster calculation.
What is 8087 architecture?
8087 Architecture is divided into two groups, i.e., Control Unit (CU) and Numeric Extension Unit (NEU). The control unit handles all the communication between the processor and the memory such as it receives and decodes instructions, reads and writes memory operands, maintains parallel queue, etc.
What is 8088087 coprocessor?
8087 coprocessor is designed to operate with 8086 microprocessor. The microprocessor and coprocessor can execute their respective instructions simultaneously. Microprocessor interprets and executes the normal instruction set and the coprocessor interprets and executes only the coprocessor instructions.
What is the function of the status register in 8087?
The status register reflects the overall operation of the coprocessor. The 8087 is a numeric data processor. It is basically made to work along with the 8086 and 8088 processors. It is incapable of fetching the instructions on its own so it is just simply connected to respective buses of the processor.
