Apparatus for exchanging channel adapter status among multiple c

Details Apparatus for exchanging channel adapter status among multiple c Apparatus for exchanging channel adapter status among multiple c

1990-08-31

1993-04-27

Fleming, Michael R.

Boots, shoes, and leggings

395200, 3642383, 3642382, 364264, 3642646, 3642419, 3642563, 364DIG1, G06F 1312

Patent

active

052069362

ABSTRACT:
A device information interface for a channel to channel I/O device having a plurality of channel adapters. A device interface bus interconnects each of the channel adapters, permitting an exchange of data between channel adapters. A virtual device storage array at each channel adapter stores the status of inactive channel devices associated with a connected channel. Inquiries as to the status of a logical adapter may be sent over the device interface bus. Logic circuits at the receiving adapter will decode the inquiry and address the virtual storage array to obtain the status of the logical adapter for forwarding over the bus to the inquiring adapter.

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