| 摘要 |
PURPOSE:To assuredly perform the process of an interruption, etc., by fixing the instruction address return number and adding the instruction address return number to the contents of a present program counter when a pogram exceptional interruption conditions, etc. arises. CONSTITUTION:When a machine error is detected at a scholar unit 2, the unit 2 sends an instruction address return number alternation inhibiting command to a vector unit 3. Receiving this command, the unit 3 fixes the contents of an instruction counter 8 plus the contents of the program accessible registers. |
