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Not in the 8086/8088.
Microcode can only be changed in the newer CPUs. That is done using the BIOS. The CPU has a certain amount of memory available for microcode edits, and this list is created when the CPU is initialized. This list overrides the hard-coded instructions. There may be performance penalties from using this list instead of the default microcodes for the instructions, but that is reserved mainly for serious bugs that cause problems like system crashes.
What else can I help you with?
Why do you go for ascii adjust instructions in 8086 micro processor?
The ASCII adjust instructions in the 8086 microprocessor are used to implement CARRY processing when numeric data is represented in an unpacked form in ASCII. With them, you can create arbitrary precision math operations. The three flavors of data are binary, decimal (packed) and ASCII (decimal unpacked), not including floating point.
When was Floating Point created?
Floating Point was created in 2007-04.
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.
What is the floating point unit used for on the processor system?
"Floating Point" refers to the decimal point. Since there can be any number of digits before and after the decimal, the point "floats". The floating point unit performs arithmetic operations on decimal numbers.
What are some common errors detected by the CPU?
Fixed point overflow, Floating point overflow, Floating point underflow, etc.
What is a giga flop?
A giga-flop stands for a billion FLOATING POINT instructions per second. It signifies nothing about the number of Integer or memory load/store/jump operations. It is primarily used in the Scientific Computing field, which mostly run large-scale simulations, which are (almost) exclusively floating point calculations.
Is Fixed floating point choice is not an important ISA condition?
fixed/floating point choice is an important ISA condition.
When is a binary floating point number normalized?
A binary floating point number is normalized when its most significant digit is not zero.
How many instructions can an modern CPU process per second?
no ----- How about a real answer?A modern processor, say, the i7 3770k, is capable of processing 3.5 Instructions per CYCLE. And it runs at 3.5GHz, or 3,500,000,000 Cycles per Second. This becomes: 3.5 *3.5 Ghz= 12,250,000,000 Instructions per Second. And now I need to put my head on ice! You cold word this as 12.25GIPS, or 12.25 Giga-Instructions per Second. Of course, GIPS isn't a real abbreviation, so use what you want to! You can also go by GFLOPS, or Giga Floating Point Operations Per Second, a more common measurement. That same i7 3770k is capable of something like 150GFLOPS, or 150,000,000,000 Floating Point Operations per Second. Amazing!
What is the possible reason if the turbo C compiler displays an error like this Illegal use of floating point?
Floating-point library not linked in.
How many bits are used in double precision floating point format number representation?
Depends on the format IEEE double precision floating point is 64 bits. But all sorts of other sizes have been used IBM 7094 double precision floating point was 72 bits CDC 6600 double precision floating point was 120 bits Sperry UNIVAC 1110 double precision floating point was 72 bits the DEC VAX had about half a dozen different floating point formats varying from 32 bits to 128 bits the IBM 1620 had floating point sizes from 4 decimal digits to 102 decimal digits (yes digits not bits).
What is the syntax for representing a floating-point number in Java using a float literal?
In Java, a floating-point number can be represented using a float literal by appending an "f" or "F" at the end of the number. For example, 3.14f represents a floating-point number in Java.
