摘要:
A square root extraction circuit and a floating-point square root extraction device which simplify a circuit structure and improve an operation speed are provided. Portions for generating square root partial data (q3 to q8) include carry output prediction circuits (3 to 8), respectively. The carry output prediction circuit (i) (i equals any one of 3 to 8) receives condition flags (AHin, ALin), the most significant addition result (SUM), and square root partial data (q(i-1)) from the preceding square root partial data generating portion, and also receives a carry input (Cin) to output condition flags (AHout, ALout) for the next square root partial data generating portion, and square root partial data (q(i)). The condition flags (AHout, ALout) serve as the condition flags (AHin, ALin) for the carry output prediction circuit (i+1), respectively.
摘要:
Three local buses and three composite operation buses are provided in each processing element. An arithmetic logic unit, a multiplier, a bit operator, and an accumulator are connected to respective local buses and the composite operation buses. As a result, each operation unit can transfer data efficiently using a plurality of buses of different functions.
摘要:
A square root extraction circuit and a floating-point square root extraction device which simplify a circuit structure and improve an operation speed are provided. Portions for generating square root partial data (q3 to q8) include carry output prediction circuits (3 to 8), respectively. The carry output prediction circuit (i) (i equals any one of 3 to 8) receives condition flags (AHin, ALin), the most significant addition result (SUM), and square root partial data (q(i−1)) from the preceding square root partial data generating portion, and also receives a carry input (Cin) to output condition flags (AHout, ALout) for the next square root partial data generating portion, and square root partial data (q(i)). The condition flags (AHout, ALout) serve as the condition flags (AHin, ALin) for the carry output prediction circuit (i+1), respectively.
摘要:
There is disclosed a high-speed programmable image processing LSI circuit adaptable to image preprocessing, feature extraction, and matching, which includes a DMA transfer control portion (4) for DMA transfer which reads input data from an external memory to transfer the input data to data memories in the LSI circuit; a sequence control portion (8), an instruction memory (7), and an address generating portion (3) which control writing to and reading from the data memories in response to an instruction code; the DMA transfer control portion (4) accommodating a wait time caused during external data transfer to prevent the wait time from affecting instruction code control in the LSI circuit; SIMD type processing units arranged in parallel and connected to output lines of the data memories for completing the process steps of image processing in cooperation with a postprocessing portion which in turn provides an output signal (54) to the exterior and accommodates a wait time at this time.
摘要:
A PCI-PCI bridge is connected between a primary PCI bus and a secondary PCI bus, and includes a bridge for connecting the secondary PCI bus to the primary PCI bus. The bridge has a type “00” configuration header, and identifies, at the time of configuration, one of a plurality of PCI agents including a VGA device on the secondary PCI bus based on a value of a function number field of the configuration command from the device driver, and that the identified agent to execute configuration.