Method and apparatus for accessing more than 4 Gigabytes of physical memory with 4-byte table entries
    2.
    发明授权
    Method and apparatus for accessing more than 4 Gigabytes of physical memory with 4-byte table entries 失效
    使用4字节表项访问超过4 GB的物理内存的方法和设备

    公开(公告)号:US06289431B1

    公开(公告)日:2001-09-11

    申请号:US09013414

    申请日:1998-01-26

    IPC分类号: G06F1202

    CPC分类号: G06F12/1009

    摘要: A method and apparatus for accessing pages in physical memory, where the physical memory is described. The present invention provides a paged memory system having multiple page sizes. Pages of a first size are accessed via a page directory entry and a corresponding page table entry. The page directory entry stores a base physical address for a corresponding page table and control bits indicating permissions. The page table entry stores a base physical address of the page in memory. In one embodiment, the page table entry inherits permissions from the page directory entry. Pages of a second size are accessed via a page directory entry that stores a base physical address of the page and control bits indicating permissions associated with the page. In another embodiment, entries to the page directory table and the page table are 4-bytes in size and provide paging for memory up to 1.1 Terabytes in size.

    摘要翻译: 一种用于访问物理存储器中的页面的方法和装置,其中描述了物理存储器。 本发明提供了一种具有多页尺寸的分页存储系统。 通过页面目录条目和对应的页面表项访问第一个大小的页面。 页目录条目存储相应页表的基本物理地址和指示许可的控制位。 页表条目将页面的基本物理地址存储在存储器中。 在一个实施例中,页表条目从页目录条目继承权限。 通过存储页面的基本物理地址的页目录条目和指示与页面相关联的权限的控制位来访问第二大小的页面。 在另一个实施例中,到页目录表和页表的条目大小为4字节,并为大小为1.1TB的内存提供寻呼。

    Memory attribute palette
    3.
    发明授权
    Memory attribute palette 失效
    内存属性调色板

    公开(公告)号:US5946713A

    公开(公告)日:1999-08-31

    申请号:US914578

    申请日:1997-08-18

    IPC分类号: G06F12/10 G06F12/08 G06F12/02

    CPC分类号: G06F12/0802

    摘要: The present invention relates to a computer system in which linear memory attributes are specified. Physical memory attributes may also be specified in physical attribute registers. A memory attribute palette (MAP) receives index signals and selects linear memory attributes in response to the index signals. An effective memory attribute selector receives selected linear memory attribute signals and, if present, the physical memory attribute signals and, in response thereto, selects effective memory attribute signals to present an effective memory attribute. In a preferred embodiment, the linear memory attributes may be programmably written into one or more registers, thereby allowing a program or OS flexibility in the choice of memory attributes, including memory attributes not currently used. The invention allows a program to apply a memory attribute of choice to a particular section of memory, thereby allowing the computer system to provide higher performance.

    摘要翻译: 本发明涉及一种其中规定了线性存储器属性的计算机系统。 物理存储器属性也可以在物理属性寄存器中指定。 存储器属性调色板(MAP)接收索引信号并响应于索引信号选择线性存储器属性。 有效存储器属性选择器接收所选择的线性存储器属性信号,并且如果存在物理存储器属性信号,并且响应于此,选择有效存储器属性信号以呈现有效存储器属性。 在优选实施例中,线性存储器属性可以可编程地写入一个或多个寄存器,从而允许程序或OS灵活地选择存储器属性,包括当前未使用的存储器属性。 本发明允许程序将选择的存储器属性应用于存储器的特定部分,从而允许计算机系统提供更高的性能。

    Apparatus and method to identify the maximum operating frequency of a processor
    4.
    发明授权
    Apparatus and method to identify the maximum operating frequency of a processor 有权
    识别处理器的最大工作频率的装置和方法

    公开(公告)号:US06857066B2

    公开(公告)日:2005-02-15

    申请号:US09990899

    申请日:2001-11-16

    IPC分类号: G06F1/04 G06F9/30

    CPC分类号: G06F9/30003

    摘要: A method and apparatus comprising setting a register to a value executing a processing instruction to interpret the value and the at least one register verifying that the interpretation of the processing instruction is valid to ensure the at least one register contains a valid at least one string scanning the string in the register for multiplier scanning the string in the register for a frequency and determining a maximum operating frequency with the multiplier and frequency.

    摘要翻译: 一种方法和装置,包括将寄存器设置为执行处理指令的值以解释所述值,并且所述至少一个寄存器验证所述处理指令的解释是否有效以确保所述至少一个寄存器包含有效的至少一个字符串扫描 寄存器中的字符串用于乘法器扫描寄存器中的字符串频率,并用乘数和频率确定最大工作频率。