摘要:
An error-detecting information adding apparatus transfers original data received from an external host apparatus to a memory and to an error-detecting code generating unit in one DMA transfer so that while the original data is transferred to the memory, an error-detecting code is generated. The error-detecting code generated by the error-detecting code generating unit is transferred from the error-detecting code generating unit to the memory.
摘要:
A data input-output device includes a single memory, an input interface unit for storing data in the memory, an operation unit for fetching the data from the memory, for performing operations on the data, and for updating the data in the memory when necessary, an output interface unit for transmitting the data in the memory that has been operated on by the operation unit to outside of the device, and a bus control unit for setting a priority for each of these units and for controlling memory access by these units according to the priorities every time a predetermined number of bytes of data is transferred.
摘要:
A microprocessor system which comprises an arithmetic logic unit for generating flags, a flag update detector for outputting a flag update detecting signal, a status register coupled to the flag update detector and the arithmetic logic unit for receiving the flag update detecting signal and a flag outputted from the arithmetic logic unit, a first address outputting portion coupled to the flag update detector and the status register for receiving the flag update detecting signal, a flag outputted from the status register, a target instruction address, a next instruction address and a branch condition for determining according to the flag received from the status register whether or not the branch condition is met, and for outputting first and second address candidates selected from the target instruction address and the next instruction address according to the flag update signal and to whether or not the branch condition is met, and a second address outputting portion coupled to the first address outputting portion and the arithmetic logic unit for receiving the first and second address candidates outputted from the first address outputting portion, the branch condition and the flag outputted from the arithmetic logic unit, for determining according to the flag received from the arithmetic logic unit whether or not the branch condition is met, and for outputting the target instruction address or the next instruction address as an instruction fetch address on the basis of a result of determining according to the flag received from the arithmetic logic unit whether or not the branch condition is met.
摘要:
The present invention provides an error correction apparatus and an error correction method, which does not execute unnecessary syndrome operation and operation processing subsequent to the syndrome operation. A format interface 10a judges whether an uncorrectable error is included in parallel with demodulation of received data, and outputs an error correction incapability detection signal when the uncorrectable error is included. The error correction circuit 20a executes decoding of the error correction, including syndrome operation, for demodulated data from the format interface 10a, suspends the syndrome operation when the error correction incapability detection signal is input, and terminates the error correction.
摘要:
In order to reduce the time required for error correction in the error correction device, data are transferred from the buffer memory not only to the syndrome calculator but also to the error detector at the same time, and until the syndrome calculator detects an error-containing code, the error detector performs error detection in parallel with the syndrome calculation done by the syndrome calculator. In the error detection after the error corrector corrects the error, the mid-term results of the error detection obtained before the error-containing code is detected are used. Consequently, it becomes unnecessary to transfer all data from the buffer memory to the error detector, thereby making it possible to execute error detection process at a halfway point.
摘要:
A paint film based on a thermo-setting resin which is applied on an aluminum article may be improved in its adhesion properties and resistance to chemical and mechanical attacks as well as in its resistance to weathering, if the surface of the aluminum article is previously anodized to form the oxide surface layer or is treated in boiling water to form the boehmite surface layer and if the oxide surface layer, including the boehmite layer, is pre-treated with a silane compound prior to the application of the coating composition. The application of the paint composition is conducted in this invention by means of a known coating technique such as dipping, spraying, showering, brushing or roller-coating, other than the electro-deposition technique.
摘要:
In a semiconductor integrated circuit 11, there is constructed a test expected value programming circuit 100 having an input/input-output pad 103 for retrieving a ground/power-source signal 104 from a ground terminal 30 or a power source terminal 31 connected to the semiconductor integrated circuit 11, a switch 105 for selectively switching the outputting of the ground/power-source signal 104 inputted via the input/input-output pad 103, and an expected value generation circuit 13 for generating a test expected value signal 21 based on a switch output signal 122 outputted from the switch 105.
摘要:
In a semiconductor integrated circuit 11, there is constructed a test expected value programming circuit 100 having an input/input-output pad 103 for retrieving a ground/power-source signal 104 from a ground terminal 30 or a power source terminal 31 connected to the semiconductor integrated circuit 11, a switch 105 for selectively switching the outputting of the ground/power-source signal 104 inputted via the input/input-output pad 103, and an expected value generation circuit 13 for generating a test expected value signal 21 based on a switch output signal 122 outputted from the switch 105.
摘要:
In the memory exclusive control device having a CPU-1 accessible to both a common memory and first memory devices, the CPU-1 is prohibited from accessing to the common memory device (105) during OFF state of an access permission flag, and when the access permissive flag ON is established by TCS (111), the gate of the access permitting unit (103) is opened to thereby permit the CPU-1 to access to the common memory device (105). Thus, the memory exclusive control can be realized for transferring a desired program to be processed to the address space of the first memory device, allowing omission of a third memory device.
摘要:
For reducing time required for error correction in an error correction device, data are transferred from a buffer memory not only to a syndrome calculator but also to an error detector at the same time, and until the syndrome calculator detects an error-containing code, the error detector performs error detection in parallel with the syndrome calculation done by the syndrome calculator. During error detection after the error corrector corrects the error, mid-term results of the error detection obtained before an error-containing code is detected are used. Consequently, it becomes unnecessary to transfer all data from the buffer memory to the error detector, thereby making execution of an error detection process possible at a halfway point.