摘要:
An entertainment device includes a general-purpose signal processor made up of an assembly of component-processors, each of which can operate in parallel under operating environments independent of others component-processors. A management processor controls a cross bar so as to change the operating environments of the respective component-processors in accordance with a demand for signal processing which is given from a CPU, and to change over any one of the component-processors which receives a signal to be processed which is inputted through the cross bar or outputs a processed signal in accordance with the demand for signal processing.
摘要:
According to one embodiment, a CPU boots a small OS having a function of executing a target application, boots the target application on the booted small OS, and boots a CPU dispatcher for switching an execution OS. The CPU boots a rich OS capable of executing applications larger in number than applications executed by the small OS by using the CPU dispatcher, in a background of the small OS, while causing the target application booted on the small OS to run. After the rich OS is booted, the CPU boots the target application on the booted OS separately from the target application running on the small OS. The CPU passes an execution state of the target application running on the small OS to the target application booted on the rich OS and shifting the execution OS from the small OS to the rich OS.
摘要:
A video output controller has a video output buffer, a DMA controller, and a display controller. The display controller has a DMA command list processor configured to determine which of the DMA commands contained in the DMA command list must be issued, an initialize signal port configured to receive an initialize signal for starting initialization, a step signal port configured to receive a step signal for starting the issuance of the DMA command, and an external signal processor configured to provide the DMA command list processor with a timing signal for issuing a DMA command according to the initialize signal and step signal .
摘要:
An apparatus of drawing graphics includes an edge coefficient calculator calculating, from vertex data on vertices of a triangle, edge coefficients of edge functions used to determine whether a pixel is present in an inside region of the triangle, and a bounding box calculator calculating a bounding box of projected images of the triangle on a projection plane based on the edge coefficients. The apparatus also includes a starting point determiner and a traverser. The starting point determiner classifies the projected images of the triangle based on a combination of the edge coefficients for respective sides of the triangle, and determines a scan starting point from a corner of the bounding box based on classification of the projected images. The traverser generates pixel data used in rasterization by scanning the bounding box from the scan starting point.
摘要:
A video output controller has a video output buffer, a DMA controller, and a display controller. The display controller has a DMA command list processor configured to determine which of the DMA commands contained in the DMA command list must be issued, an initialize signal port configured to receive an initialize signal for starting initialization, a step signal port configured to receive a step signal for starting the issuance of the DMA command, and an external signal processor configured to provide the DMA command list processor with a timing signal for issuing a DMA command according to the initialize signal and step signal.
摘要:
A logic simulation system capable of handling a very large scale circuit while realizing a high speed simulation by retaining the parallelism of the simulation targets. The system includes: a host computer having data of the simulation target divided into a plurality of sections defining different simulation phases to be executed sequentially in time division; an emulator for emulating the simulation target, including: a plurality of programmable emulation chips for mapping the simulation target, each emulation chip having a memory with a plurality of memory banks provided in correspondence to the plurality of sections for registering mapping data specifying a function to be realized by each emulation chip in emulating each of the plurality of sections; a programmable network for interconnecting the plurality of emulation chips; and an emulation control unit for controlling the plurality of emulation chips and the network by sequentially switching the memory banks of the memory of each emulation chip and changing connections among the plurality of emulation chips provided by the network in emulating each of the plurality of sections; and an interface unit for interfacing the host computer and the emulator.
摘要:
An apparatus of drawing graphics includes an edge coefficient calculator calculating, from vertex data on vertices of a triangle, edge coefficients of edge functions used to determine whether a pixel is present in an inside region of the triangle, and a bounding box calculator calculating a bounding box of projected images of the triangle on a projection plane based on the edge coefficients. The apparatus also includes a starting point determiner and a traverser. The starting point determiner classifies the projected images of the triangle based on a combination of the edge coefficients for respective sides of the triangle, and determines a scan starting point from a corner of the bounding box based on classification of the projected images. The traverser generates pixel data used in rasterization by scanning the bounding box from the scan starting point.
摘要:
An apparatus of drawing graphics includes an edge coefficient calculator calculating, from vertex data on vertices of a triangle, edge coefficients of edge functions used to determine whether a pixel is present in an inside region of the triangle, and a bounding box calculator calculating a bounding box of projected images of the triangle on a projection plane based on the edge coefficients. The apparatus also includes a starting point determiner and a traverser. The starting point determiner classifies the projected images of the triangle based on a combination of the edge coefficients for respective sides of the triangle, and determines a scan starting point from a corner of the bounding box based on classification of the projected images. The traverser generates pixel data used in rasterization by scanning the bounding box from the scan starting point.