Interruption processing method and data channel device

Abstract

Abstract PURPOSE:To release the problem of a conventional detecting delay by securing a constitution where the software nips even other interruption requests produced at a CH interruption when a CPU detects an interruption in a certain look-in cycle. CONSTITUTION:When a data channel device CH 101 gives the interruption factors received from the input/output IO layers 1040 - 104n-1 periodically and en bloc to a CPU 100 as the interruption flags, the channel state words CSW corresponding to the IO devices having the interruptions are successively read out. Then the interruption request flags are reset. Thus plural interruptions can be informed with a single interruption given from the CH 101. As a result, the software nips even other interruption requests produced at a CH interruption when the CPU 100 detects an interruption in a certain look-in cycle. As a result, the problem of a conventional detecting delay, etc., can be released.

Inventors

• 👤 Etsuo Masuda
• 👤 増田　悦夫
• 👤 Yoshiaki Wakimura
• 👤 脇村　慶明
• 👤 Tadayoshi Komachiya
• 👤 小町谷　忠芳

Bibliographic Details