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1.发明授权Method and apparatus for memory access scheduling to reduce memory access latency 有权用于存储器访问调度以减少存储器访问延迟的方法和装置公开(公告)号：US06785793B2
公开(公告)日：2004-08-31
申请号：US09966957
申请日：2001-09-27
IPC分类号： G06F1200
CPC分类号： G06F12/0215 , G06F13/161 , G06F13/1631
摘要： A device is presented including a memory controller. The memory controller is connected to a read request queue. A command queue is coupled to the memory controller. A memory page table is connected to the memory controller. The memory page table has many page table entries. A memory page history table is connected to the memory controller. The memory history table has many page history table entries. A pre-calculated lookup table is connected to the memory controller. The memory controller includes a memory scheduling process to reduce memory access latency.
摘要翻译： 呈现包括存储器控制器的设备。 存储器控制器连接到读请求队列。 命令队列耦合到存储器控制器。 存储器页表连接到存储器控制器。 内存页表具有许多页表条目。 存储器页历史表连接到存储器控制器。 内存历史表有许多页历史表条目。 预先计算的查找表连接到存储器控制器。 存储器控制器包括用于减少存储器访问延迟的存储器调度处理。
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2.发明授权Method and apparatus for dynamically allocating and resizing the dedicated memory in a shared memory buffer architecture system 失效用于在共享存储器缓冲器架构系统中动态地分配和调整专用存储器大小的方法和装置
公开(公告)号：US5915265A
公开(公告)日：1999-06-22
申请号：US577490
申请日：1995-12-22
CPC分类号： G06F12/0223 , G09G2360/125 , G09G5/39
摘要： A method and system for dynamically sizing a dedicated memory in a shared memory buffer architecture. At initial boot, system BIOS programs control register to allocate a dedicated memory of a desired size. The size of the dedicated memory allocated is dependent on the performance requirements. If after initial boot, the performance requirements change, it may necessitate a change in dedicated memory size. By reprogramming the control registers, the dedicated memory size is dynamically changed without any manual manipulation of internal components.
摘要翻译： 一种用于在共享存储器缓冲器架构中动态地调整专用存储器的尺寸的方法和系统。 在初始启动时，系统BIOS程序控制寄存器以分配所需大小的专用存储器。 分配的专用内存的大小取决于性能要求。 如果在初始引导后，性能要求发生变化，则可能需要更改专用内存大小。 通过重新编程控制寄存器，专门的存储器大小是动态变化的，无需任何手动操作内部组件。
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3.发明授权Method and apparatus to permit the boot of a shared memory buffer architecture employing an arbitrary operating system 失效允许引导使用任意操作系统的共享存储器缓冲器架构的方法和装置
公开(公告)号：US5790849A
公开(公告)日：1998-08-04
申请号：US587775
申请日：1995-12-22
CPC分类号： G06F9/5016 , G06F12/0684 , G06F9/4411
摘要： A method and system for allowing an arbitrary operating boot in a shared memory buffer architecture system. A chipset including a memory controller, a bridge, and an arbitration unit is used to control access to a shared physical memory. The physical memory is divided between the system memory and dedicated memory to be used by one or more devices. A portion of the physical memory is allocated as a dedicated memory for some system device. The remainder of the memory may be allocated as system memory. The allocation is performed by a system BIOS either at initial start up or through system BIOS calls made during initialization of the device to use the dedicated memory. Programmable bits in the chipset are programmed to prevent the memory controller from claiming dedicated memory accesses during the boot of an operating system. Since the operating system's attempts to write to the dedicated memory are not claimed by the memory controller during memory sizing, they are forwarded to an I/O bus. No 1/0 device claims these addresses, so a memory sizing read back is unanswered, and the operating system is caused to believe the top of memory has been reached below the dedicated memory. If the O/S does not do memory sizing, the system BIOS provides the O/S with the size of system memory available. Thus, in either case, the dedicated memory allocation is transparent to the O/S, and an arbitrary O/S may be employed with the system.
摘要翻译： 一种用于在共享存储器缓冲器架构系统中允许任意操作引导的方法和系统。 使用包括存储器控制器，桥接器和仲裁单元的芯片组来控制对共享物理存储器的访问。 物理存储器被划分在系统存储器和专用存储器之间以被一个或多个设备使用。 物理存储器的一部分被分配为用于某些系统设备的专用存储器。 存储器的其余部分可以被分配为系统存储器。 分配由系统BIOS执行，在初始启动时或通过在设备初始化期间进行的系统BIOS调用来使用专用存储器。 芯片组中的可编程位被编程以防止存储器控制器在操作系统引导期间声称专用存储器访问。 由于操作系统写入专用存储器的尝试在存储器大小调整期间不被存储器控制器要求，所以它们被转发到I / O总线。 没有1/0设备声称这些地址，所以回读的内存大小调整未被回答，并且操作系统导致相信内存的顶部已经达到专用内存以下。 如果O / S没有进行内存大小调整，系统BIOS会为系统内存的大小提供O / S。 因此，在任一情况下，专用存储器分配对于O / S是透明的，并且可以在系统中使用任意的O / S。
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4.发明授权Method and apparatus for dynamically resizing a frame buffer in a shared memory buffer architecture system 有权用于在共享存储器缓冲器架构系统中动态地调整帧缓冲器大小的方法和装置
公开(公告)号：US5953746A
公开(公告)日：1999-09-14
申请号：US217946
申请日：1998-12-21
CPC分类号： G06F12/0223 , G09G2360/125 , G09G5/39
摘要： A method and system for dynamically sizing a dedicated memory in a shared memory buffer architecture. At initial boot, system BIOS programs control register to allocate a dedicated memory of a desired size. The size of the dedicated memory allocated is dependent on the performance requirements. If after initial boot, the performance requirements change, it may necessitate a change in dedicated memory size. By reprogramming the control registers, the dedicated memory size is dynamically changed without any manual manipulation of internal components.
摘要翻译： 一种用于在共享存储器缓冲器架构中动态地调整专用存储器的尺寸的方法和系统。 在初始启动时，系统BIOS程序控制寄存器以分配所需大小的专用存储器。 分配的专用内存的大小取决于性能要求。 如果在初始引导后，性能要求发生变化，则可能需要更改专用内存大小。 通过重新编程控制寄存器，专门的存储器大小是动态变化的，无需任何手动操作内部组件。
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