8086 microprocessor

The original link is: http://www.chinaunix.net/old_jh/23/483510.htmlArchitecture of protection methodsProblems:Register model of Protection modeDescription of Protection mode and page table entryStorage management and address translation of protection methodsMulti-task mechanism and protection implementationVirtual 8086 modeA register model of protection modeFour new registers (pointers-----pointing to special data tables in memory):Global Descriptor

application is broad, is widely used in the transaction management, the industrial production process automatic detection and control, the communication, the intelligent terminal, Education and home appliances control and other fields.(3) 16-bit microcomputer: with high-performance 16-bit microprocessor for CPU, data bus width of 16 bits. As the 16-bit microprocessor not only in the integration and process

implementation features based on the i386 architecture Preface ?? This article discusses the features of linux on the cpu of the i386 system. This article introduces the interrupt mechanism, segment-and-page management of memory, and the hardware mechanism provided by task switching under the i386cpu protection mode, compare the differences between the specific implementation features of Linux and the i386 design intent. Describes how to set the Linux interrupt vector table, initialize the inte

competitive in this rapidly growing market. However, users benefit from low prices. Many of the structural features of early PCs remain in modern PC systems. For example, Intel's most advanced Pentium Pro processor retains the Intel 8086 addressing model. When Linus Torvalds started to write Linux, he chose Intel 80386 PC, which was the most widely used and reasonably priced at the time.. 1 typical PC motherboard. From the outside of the PC, the most

Chapter II Protection Mode 80386 profile "01:30" 8086 addressing space 1M "01:32" 80286 addressing space 16M "01:36" 80386 addressing space 4g control register (eflags) "01:57" EFL AGS is used to instruct the microprocessor "02:41" TF (Trap flag) To activate the debug function on the microprocessor chip. If 1, debugging is allowed, and if 0, debugging is forbi

Basic principle 2.1 8086/8088 The IBM PC Central Processor (processing unit) is a microprocessor inter 8088,8088 is a small version of the 8086. For writing programs, the two are almost identical. The difference between the two is: Their external communication. 8086 and the outside communication is through the 16-bit i

the definition of the time with the ~ logo can be.(2) A virtual function is a manifestation of C + + polymorphism: For example, a subclass inherits a function (method) of the parent class, and when we point the pointer to a subclass, the parent class must have the function (method) set to virtual (virtual function). Using virtual functions, we are flexible to dynamically bind, of course, at the expense of a certain cost. How to: Use the virtual keyword. 6. What is the difference between a globa

task processing and the processing data sent to the Executing agency Management task Control agency execution. 5, embedded microprocessor architecture (1) von Neumann structure: The program and data share a storage space, program instruction store address and data storage address point to the same memory different physical location, with a single address and data bus, the program and data width is the same. For example:

16-bit address (A0~A15), can address 64KB of memory space, and I/O interface decoding only use address bus select、read low 8 bit (A0~A7), can address 256 I/O port space. The I/O interface of 8086 microprocessor also belongs to the independent address way. It allows 64K 8-bit I/O ports and two numbered 8-bit ports that can be combined into a 16-bit port. The instruction system has both an input and output i