| 摘要 |
PURPOSE:To facilitate the retrial of an IPL by generating an error and separating an error generating block when the error occurs when a machine checking mask is off. CONSTITUTION:When a machine checking mask is off, a signal bypass circuit 10 is operated, an error counter 4 is bypassed, an error checking signal is sent to a deleting register 5 and the block including the RAM of the error generation can be separated. Thus, even when the machine checking mask is off, the defective block can be separated by a first block error, and even when a first IPL (INITIAL PROCRAM LOAD) is not successful, the second IPL can be executed. |
