| 摘要 |
PURPOSE:To restart an instruction without a malfunction after the page fault processing is finished by providing a means which compares the contents LA of a logic address register with the next page boundary address BA and detects that the conditions BA-N<=LA<BA are satisfied against a certain fixed natural number N. CONSTITUTION:The warnings can be issued against a 3-word access, a 4-word access, etc. In other words, it may be required to give a warning when the conditions BA-N<=LA<BA are satisfied with the logic address LA of a memory access, a page boundary BA and a prescribed natural number N (issuing the warning to an N-word access). Especially, the conditions equivalent to a state where bits n-11 are equal to 'all-1' when N=2<n>+1 (n: non-negative integer). Thus a warning signal 131 can be issued with a simple logic.
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