For ix86 programming, sometimes it is necessary to change from the real mode to the protection mode (for example, to access extended memory in the DOS era, or to write pilot code, of course, if you program in a 32-bit operating system, you won't be
Bit field (bit) of C structure bodySome information, when stored, does not need to occupy a full byte, but only a few or a bits. For example, when storing a switch quantity, only 0 and 12 states, with one binary can be. In order to save storage
C language bit operationA bitwise operation is a binary-based operation. In system software, it is often necessary to deal with bits problems. The C language provides 6 bit manipulation operators. These operators can only be used for integer
Turn from: http://zhidao.baidu.com/question/43179175.html
According to the microprocessor (CPU) Word length classification by the microprocessor, the microcomputer is generally divided into 4-bit, 8-bit, 16-bit, 32-bit and 64-bit machine.(1) 4-bit
Start with the problem
# IncludeVoid main (){Union{Struct{Unsigned short s1: 3;Unsigned short s2: 3;Unsigned short s3: 3;} X;Char c;} V;
V. c = 100;Printf ("% d/n", v. x. s3 );}A: 4 B: 0 C: 3 D: 6The answer is.
But the answer I run in TURBO C is
Now that the Windows XP Professional x64 Edition (Windows XP 64) has been officially launched, what is the significant change compared to 32-bit Windows XP? Can it successfully support 32-bit applications? Can normal users now upgrade to Windows XP 6
Assembly language programming, the 32-bit system should not have any problems, but under the 64-bit system, there will be some different places. Some program samples also compile errors or execute errors.The system used by the blogger is CentOS v6.4
Original URL: http://www.ibm.com/developerworks/cn/linux/l-port64.htmlWith the popularity of 64-bit architectures, preparing your Linux® software for 64-bit systems has become more important than ever. In this article, you'll learn how to prevent
Assembly Language (assembly language) is a low-level language for computers, microprocessors, microcontrollers, or other programmable devices, also known as symbolic languages. In assembly language, a mnemonic (mnemonics) is used instead of the
Tips and Techniques for porting Linux applications to a 64-bit system for smooth migration & nbsp; Linux is one of the cross-platform operating systems that can use a 64-bit processor, currently, 64-bit systems are very common on servers and
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