| 摘要 |
PURPOSE:To use an information processing device itself to record the execution of micro instructions without requiring a special device such as an execution recording device or the like, by providing an error detecting part and a restoring part to perform the error detection, the restorage, etc. CONSTITUTION:Out of micro instructions stored in a micro instruction group storage medium FD7 micro instructions, whose execution should be recorded, have bit 0 inverted. If a micro instruction read out from a control storage part CS8 by a micro instruction reading part CSDR9 has bit 0 inverted, an error is detected by an error detecting part PC10, and bit 0 of this micro instruction is inverted again by a restoring part CS11, and this micro instruction goes to a normal micro instruction and is stored again in the CS8. This instruction is read out by the CSDR9, and the error is not detected by the PC10 at this time, and this micro instruction is executed in a micro instruction executing part 12. By repeating this operation, the execution of micro instructions is recorded without requiring a special device such as an execution recording device or the like. |
