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Difference between expanded and extended memory?
Extended memory Memory addresses greater than or equal to one megabyte are called extended memory. The 8088 and 8086 PCs can't have extended memory because these chips can access only addresses of less than one megabyte (1MB) in size. With the minor exception of the High Memory Area (HMA), extended memory can be addressed only by applications run in real mode. It is possible, however, for DOS applications to make use of this memory to store data (but not to execute code directly from there). XMS (eXtended Memory Standard, promulgated by Microsoft) permits applications to allocate extended memory and takes care of copying data to and from extended memory and conventional memory so that the application does not have to worry about switching between modes. Like EMS, XMS usually requires loading a device driver of some sort. Extended memory is limited to 15Mb on 286es and 386SXes (15Mb extended plus 1Mb conventional and upper memory equals 16Mb, or 224, 24 being the number of address lines coming out of the CPU), limited to 4 gigabytes (232) for 386DX chips and up, although very few motherboards have been designed to hold that much memory. Expanded memory Expanded memory is addressed from within the lower 1MB space, usually above 640K. It is sometimes up to 64K of real addresses but this is just a small portion of the whole expanded memory, which can be very large. The expanded memory requires hardware and/or software that maps the expanded memory to a piece of address space, in what is called a "page frame". Extended memory can be used as expanded memory by using software and the 80286 or 80386 chips to "remap" it to the lower 1MB. It should be noted that the 80386 chip has hardware built in that supports expanded memory while the 80286 chip does not. Software that will convert extended memory on an 80286 machine to expanded memory may result in a significant performance penalty, if the machine does not have special hardware support for expanded memory. Software that will convert extended memory to expanded memory on an 80286 machine is not written to use the special hardware built into the 80386 chip, so the same type of performance penalty may apply. Hardware supported expanded memory is the fastest form of expanded memory and is available directly on all 80386SX or better IBM compatibles running the proper software. It is also available on some 80286 machines with special chip sets or 80286 machines equipped with a hardware memory manager add-on. Lastly, it is available in a large number of memory expansion boards for all IBM compatible machines, including the 8088/8086 machines
In Google Plus What is the difference between your circles and extended circles?
If you share with your circles, only your circles can see what you've posted. Extended circles includes people who are in your circles' circles. (Hope that makes sense!)
How many addressing mode of 8086 assembly language program?
there are five addressing modes in 8086 they are : 1->direct addressing 2->Indirect addressing 3->index addressing 4->immediate addressing 5->register addressing
Which operator is used for deallocating memory in c plus plus?
delete
What is the memory management operator in c plus plus?
There is no memory management operator in C++ -- it is an unmanaged language. You use the C++ new operator to allocate memory, and use the C++ delete operator to release previously allocated memory.
What does memory do on a computer?
It holds programs in its memory so you can multitask. Plus a program needs memory to be run. All computers need memory.
Write a C plus plus to find median and mode of a number?
The median and mode of any number is the same number. The mode of 5 is 5, as is the median of 5. In other words, you need two or more numbers to determine the median and mode of those numbers.
How much memory does a ti-84 plus have?
It has a capacity of 1.5 Megabytes of Flash Memory.
How do you calculate the size of a class in memory in C plus plus?
Use sizeof( ).
What is memory leaking in c plus plus?
Memory leaking in C++, or in any language that supports dynamic memory allocation, is a failure to release memory when its use is no longer required. This causes the memory image of the process to grow, sometimes without bounds, ultimately causing process failure due to memory exhaustion.
Can you get extra memory for the lg cookie plus?
yes
What does M plus mean on calculator?
it meas memory
