摘要:
The branch prediction using a branch prediction table formed by an associative memory which is applicable to a super scalar processor without causing confusion in the branch prediction. The branch prediction uses a branch prediction table for registering entries, each entry including a branching address, a branch target address, and an instruction position indicating a position of the predicted branch instruction in group of instructions to be executed concurrently, or an entry address indicating a position of each entry in the associative memory of the table. A correctness of the predicted branch instruction is checked by using actual branch target address and/or actual instruction position of actual branch instruction encountered in the actual execution of presently fetched instructions. When the predicted branch instruction is incorrect, instructions fetched at a next processing timing are invalidated and the entry in the table is rewritten.
摘要:
The branch prediction device of this invention is for use in a pipeline processor where a plurality of instructions are simultaneously processed in various stages, such as the fetch stage, execution stage, memory access stage and register write stage. A two-port branch prediction buffer enables simultaneous operation of the registration and retrieval processes so that a previously registered address can be obtained during the same clock pulse as registration of another branch address occurs.
摘要:
In a motor-driven steering apparatus structured such that a motor-driven steering assist unit is interposed between a steering shaft in a handle side and a wheel side steering member, and an input shaft connected to the steering shaft of the motor-driven steering assist unit and an output shaft connected to the wheel side steering member are coupled by a torsion bar and arranged on the same center axis, reference angle position marks are applied to portions existing at the same angle position around the same center axis of the input shaft and the output shaft, in a neutral steering state in which a steering force is not applied to the input shaft of the motor-driven steering assist unit.
摘要:
In a support structure of a motor-driven steering assist apparatus interposed between an upper steering shaft in a steering wheel side and a lower steering shaft in a tire wheel side, a steering angle regulating means for limiting a maximum steering angle of the upper steering shaft is provided between the upper steering shaft and a vehicle body side and a steering angle regulating means for limiting a maximum steering angle of the lower steering shaft is provided between the lower steering shaft and the vehicle body side.
摘要:
A parallel processing type processor system with trap and stall control functions capable of operating without increasing the cycle time, such that the lowering of the clock frequency in the system can be prevented. In the system, the processor units are controlled such that when an exception is caused in an execution of at least one of the instructions supplied to the processor units concurrently, the processings of all of the instructions supplied to the processor units concurrently are aborted. In addition, the processings of the instructions supplied to the processor units concurrently are stalled when it is not possible to deny a possibility for an occurrence of an exception in the execution of the instructions supplied to the processor units concurrently.
摘要:
A three-dimensional graphic processing apparatus includes n arithmetic ICs (Integrated Circuits) for performing linear interpolation calculations for each scan line of a triangle polygon to obtain intensity values and depth coordinate values of pixels, and two types of n memories for storing the calculation results. The n arithmetic ICs parallelly execute linear interpolation calculations of n different pixels successive on a single scan line of a single triangle polygon in one processing cycle. Each arithmetic IC calculates for each of every n pixels in one processing cycle, and a corresponding one of the memories stores the calculation result.
摘要:
A braking device for an elevator winding machine generates a braking force by contacting a rotary body driven by a rotary shaft of the winding machine with a brake section supported through the intermediary of an elastic body. The elastic body has a nonlinear elastic characteristic so that a starting shock to the passengers in the elevator car is prevented and the braking torque detecting accuracy is improved.
摘要:
A cache memory device comprises a data cache memory, an instruction cache memory, an instruction code area change detector, and an instruction code change processor. The instruction code area change detector decides whether writing access to the data cache memory by the processor is to a data area or to an instruction area of a main memory. The instruction code change processor passes the data cache memory to perform direct writing into the main memory when the writing access is to the instruction area, and, when data for a processor address is cached in a tag section of the instruction cache memory, invalidates the effective flag of the tag section.
摘要:
A method of preparing light-sensitive silver halide grains by the simultaneous addition of two or more aqueous solutions of inorganic salts in the presence of a protective colloid, in which the production of silver halide nuclei is brought to completion during the initial stages of grain formation and the concentrations of the aqueous solutions of inorganic salts reacting with one another are increased to such an extent that fresh nuclei of crystal grains are hardly produced during the period of grain growth. The process provides grains having a desired size, for which there exists a narrow size distribution, in a relatively short period of time and which avoids any abrupt increase in the flow rates of aqueous solutions of inorganic salts added to a reaction vessel during the final stage of grain growth.
摘要:
A tuning circuit comprises a pair of identical resonant circuits each including a transmission line and a capacitive element, a coupling circuit associated with each transmission line to inject microwave energy into the resonant circuits and extract the tuned energy therefrom. An image trapping circuit is included which comprises a first section which intersects one of the transmission lines and connected to the coupling circuit associated with the intersected transmission line and a second section which extends from the point of connection of the first section with that coupling element to the opposite transmission line in a direction skewed relative to each transmission line. The second section of the image trap circuit provides a smooth interstage coupling between the two transmission lines over a range of resonant frequencies.