| 摘要 |
PURPOSE:To recover the system from malfunction due to noise in the input operation, by performing the restoration of malfunction of input operation due to noise with the retrial of the input operation by noise detection. CONSTITUTION:When a noise 10 is mixed with a data 11 on an input/output device 4 or an input/output interface line 5, the noise is mixed on a noise detection line 6 similarly and detected at a noise detector 3 at the same time and a noise detection signal 12 is generated. The noise detection signal 12 generates a noise forced interruption signal 13 at a central processing section 1, the processing of a section 14 of the data 11 mulfunctioned due to noise is interrupted, and the noise forced signal 13 is kept setting until the effect of the noise 10 is lost. The central processing section 1 resets the processing of a command 9 issued just before the mixing of noise 10 after the last transition of the signal 13, and issues a command 9 of retransfer request to an input/output control section 2. |
