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With what part of the CPU was the Intel Pentium bug an issue?
The Intel Pentium bug was an issue with the Floating Point Unit (FPU), which is a section of the processor that performs floating-point calculations.The FPU bug only occurred on earlier Intel Pentium processors, which Intel replaced with fully functional processors.
What is FPU?
An FPU or floating point unit is the part of the microprocessor that does math.
Does the processor of a personal computer consist of one or more microprocessors?
A processor (if you are talking about the CPU (central processing unit)) consists of numerous transistors--sometimes millions. An Intel Pentium D has 230,000,000. There are no microprocessors in it since it is a microprocessor in and of itself.A microprocessor doesn't have to be a CPU, but can have a specific function such as graphics processing, sound processing, or FPU (floating-point unit). Of course, many of these separate microprocessors are no longer independent chips.
Is the Intel Pentium II an 8-bit processor?
No, it is a 32-bit processor in the sense of using 32-bit virtual addresses and having 32-bit general purpose registers and ALU that operates on those 32-bit GPRs. It does feature "MMX Technology", which can process 64-bits of information at a time by reusing the FPU's registers, however, in the more common usage, it is not considered a 64-bit processor due to the lack of 64-bit virtual address space and 64-bit GPRs.
What are the differences between the Intel 80386 and the Intel 80486?
* Data/Instruction Cache - An 8192-byte SRAM built into the processor core, designed to store the most commonly used instructions. The 386 supported an off-chip cache, but this was much slower. * Pipelining - This allows the processor to handle a Locate-Fetch-Execute each clock cycle. The pipeline is offset meaning the execute step required information from the previous two clock cycles. A locate would feed the next fetch, the fetch would feed the next execute. The 386 needs to do each step separately. * Improvements to MMU performance. * Integrated FPU - (DX models only) Added accelerated high end math functions.
What does the acronym FPU represent?
Floating Point Unit
What type of processor is sometimes integrated with the CPU to handle certain tasks more efficiently such as video processing?
In some cases, Graphics Processing Units (GPUs) are integrated into CPU to handle video processing tasks more efficiently. GPUs can sometimes be used for more general processing in some cases.Another commonly integrated processor is a Floating Point Unit (FPU), which is more commonly known as a math coprocessor. While a CPU can do its job, the FPU is more efficient because it has specialized hardware and its functions are not derived from code or microcode.In the common sense, processors in addition to the main CPU are known as coprocessors.
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What is the full form of FPU?
FPU stands for Floating Point Unit. It is a specialized part of a computer's central processing unit (CPU) responsible for handling calculations involving floating-point numbers, which are numbers with decimal points or numbers that require very high precision calculations.
Is The ALU part of the CPU?
Yes, it is fundamental to the operation of even the most basic CPU. ALU stands for Arithmetic Logic Unit. It is the part of the processor which deals with basic logic and mathematical operations (not to be confused with an FPU, which performs more complex calculations of the same nature in a floating point representation). ALUs can be as simple or complex as necessary.
Which part of the computer carries out arithmetic operations?
The arithmetic and logic unit (ALU) within the computer's central processing unit (CPU) carries out arithmetic operations. Some designs also support a dedicated floating-point processing unit (FPU), which carries out arithmetic, trigonometric and logic operations based on floating-point variable types.
Why do math coprocessors enhance the capabilities of an ordinary CPU?
They simply make it easier to do floating point instructions.Before the 486 computers, math processors (or floating point units) in IBM compatibles were optional. The 486DX was the first CPU to include a floating point set as standard equipment. Intel did release the 486SX which was much like the 386DX, which had no floating point set.Most of the older programs that required floating point instructions were compiled with floating point libraries. These were instructions that used the CPU to emulate a math coprocessor. The software would call the floating point command just like the coprocessor was there. The CPU would throw an exception that it didn't understand the command, then the exception handler would send the command to the floating point library which would then execute it.But these routines were slow and the CPU had to be tied up to run them. A lot of the floating point libraries also had floating point processor detection routines. So if a math coprocessor was detected, then all the software interrupts used by the emulator sets would be routed to the math coprocessor. So when the CPU refuses to execute an instruction, the coprocessor takes over.In certain cases, the CPU can continue with the next instructions while the FPU is busy if there is no risk of a race condition. A race condition is when there is a chance that the result might not be there when it is needed. For instance, you don't want the CPU to process the results of the FPU before the results arrive, or the CPU will get random garbage from memory and act the next instruction upon the garbage. Then the FPU puts its result in that area of memory too late. So one way around that is the FWAIT instruction. That pauses the CPU while the FPU finishes to prevent a race condition.
