Asynchronous channel error mechanism

Details Asynchronous channel error mechanism Asynchronous channel error mechanism

1980-06-30

1983-04-26

Thomas, James D.

Boots, shoes, and leggings

371 9, G06F 1134

Patent

active

043815405

ABSTRACT:
An apparatus is provided for assembling information concerning the occurrence of a channel error to form a channel error event consisting of four fields: a channel function field; a field identifying the I/O register in use at the occurrence of the channel error; a field identifying the particular I/O adapter using the channel when the error occurred; and a field specifying the type of channel error. The four-field channel error event is placed in an I/O event stack accessible to the CPU, and the CPU is notified of the addition to the I/O event stack. If the attempt to store the channel error event on the I/O event stack fails, the channel is stopped until the CPU signals the channel to restart and to again attempt to log the channel error event on the I/O event stack.

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