摘要:
A modular computer system (20) including a universal connectivity station (UCS) (22) interconnected to a plurality of remote modules (30, 32, 34, 36, 38, 42) via a plurality of respective high speed serial links (26, 40) such as based on proprietary Split-Bridge™ technology. The plurality modules, including a processor module (42) which may include core parts including a CPU, memory, AGP Graphics, and system bus interface may be remotely located from each of the other modules, including the UCS (22). The present invention achieves technical advantages wherein each module of the modular computer system (20) appear to each device to be interconnected to the other on a parallel bus since the high speed serial links appear transparent. Preferably, although not necessary, each of the modules including the UCS 22 are based on the PCI bus architecture, or the PCMCIA bus architecture, although other bus architectures are well suited to be incorporated using the present invention. The processor module can be upgraded to change or improve the performance of the modular computer system 20 without requiring any changes to the remaining system, thus drastically improving the price to performance trade-offs of the system. Moreover, the operating system (OS) of each module, including both the software and hardware, do not need to be changed as the entire modular system (20) is based on a common architecture, such as the PCI or Cardbus bus architecture.
摘要:
A memory access approach optimizes memory address mapping for accessing data in a virtual memory arrangement wherein multiple banks of data are opened at once. One specific implementation is directed to a process of accessing data in a plurality of addressable banks of memory cells. The process involves accessing the memory cells by addressing arrays in the banks via column and row bits, and directing the address and control signals so that the addressable column address and row address bits are selected with a lower order group of the address bits directed to select the column address bits, and the next highest group of the address bits directed to select bank address bits. The next highest group of the address bits are directed to select the row address bits.
摘要:
A method and apparatus for use in a computer graphics system for the storage and retrieval of pixel information is described. The computer graphics system includes a screen display. The method and apparatus are implemented in a frame buffer, wherein the frame buffer memory is divided into a first memory section for storage of the pixel information and second and third memory sections. A clipping member provides clipping information for use in the display of the pixel information in a first region of the display screen. The clipping information is stored in the second memory section. A display mode member provides display mode information for use in the display of the pixel information in a second region of the display screen. The display mode information is stored in the third memory section. The clipping information and the display information are stored in the frame buffer memory separate from one another. The frame buffer memory preferably includes an array of VRAM devices. In such an embodiment, the second memory section is contained in a first VRAM device and the third memory section is contained in a second VRAM device. The clipping information and the display mode information are stored in physically separate VRAM devices for a given pixel. The clipping information and display information are preliminarily stored in a pixel cache and transferred to the second and third sections in response to a control signal from a controller.