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[assembly language] Intel_80386_Programmer_Reference_Manual DL : 0: 80386是一种先进的32位微处理器的多任务优化操作系统和应用需要很高的设计性能。 32位寄存器和数据路径支持32位地址和数据类型。该处理器可以处理多达4 GB的物理内存和64兆兆字节（246字节的虚拟内存）。片上内存管理的设施包括：地址转换寄存器，先进的多任务硬件，一个保护机制，分页的虚拟内存。特别调试寄存器提供的数据和代码甚至断点 ROM中的软件。-The 80386 is an advanced 32-bit microprocessor optimized for multitasking operating systems and designed for applications needing very high performance. The 32-bit registers and data paths support 32-bit addresses and data types. The processor can address up to four gigabytes of physical memory and 64 terabytes (246 bytes) of virtual memory. The on-chip memory-management facilities include address translation registers, advanced multitasking hardware, a protection mechanism, and paged virtual memory. Special debugging registers provide data and code breakpoints even in ROM-based software.
Date : 2025-12-31 Size : 743kb User : thinkinweb
[assembly language] cunchuguanli DL : 1: 1.实现一个内存管理的伙伴算法，实现内存块申请时的分配和释放后的回收。实验准备　　　用随机函数仿真进程进行内存申请，并且以较为随机的次序进行释放。对其碎片进行统计，当申请分配内存失败时区分实际空间不足和由于碎片而不能满足。 2.设计一个虚拟存储区和内存工作区，并使用下述算法计算访问命中率。　　　1) 最佳置换算法（Optimal）　　　2) 先进先出法（Fisrt In First Out）　　　3) 最近最久未使用（Least Recently Used）　　　4) 最不经常使用法（Least Frequently Used）　　　5) 最近未使用法（No Used Recently）　　　其中，命中率＝１－页面失效次数／页地址流长度。　　　　试对上述算法的性能加以较各：页面个数和命中率间的关系；同样情况下的命中率比较。-1. A partner of the memory management algorithm to achieve a recovery after the application of the memory block allocation and release. Experimental preparation random function simulation process memory application, and released in a more random order. Statistics, when applications allocate memory failed to distinguish between the actual lack of space and because of the debris and can not meet its debris. Design a virtual memory storage area and workspace, access to the hit rate and use the following algorithm. 1) The best replacement algorithm (Optimal) 2) first-in, first-out method (Fisrt In First Out), 3) Recently the most-recently-used (Least Recently Used) 4) is not the most frequently used method (Least Frequently Used) 5) unused method recently (No Used Recently) which hit rate = 1- the number of page faults/page address stream length. The test of the performance of the above algorithm to be compared to the relationship between: page number and hit rate compare the hit rate in
Date : 2025-12-31 Size : 133kb User : kk
[assembly language] com DL : 0: 加深对虚拟存储管理的概念和进程程序和数据在内存和外存之间换进换出算法的理解。实验的主要内容：用高级语言编写和调用高级语言编写和虚拟页式存储缺页计算模拟程序。-Deepen the concept of virtual memory management and process procedures and data between memory and the external memory to be swapped out algorithm understanding. The main contents of the experiment: to call a high-level language and high-level language and virtual page storage page fault simulation calculation program.
Date : 2025-12-31 Size : 2kb User : 何吟