Diagnostic method and system of channel control unit

Details Diagnostic method and system of channel control unit Diagnostic method and system of channel control unit

G - Physics

06

F

354/1, 354/225

G06F 11/22 (2006.01) G06F 11/267 (2006.01) G06F 13/36 (2006.01) G06F 11/26 (2006.01)

Patent

CA 1228167

ABSTRACT OF THE DISCLOSURE In a system where a central control unit, a main memory unit and a channel control unit are connected to the multibus, input/output control units are connected in series through the channel control unit and a common bus and each input/output unit, such as printer or magnetic tape unit, is connected to the input output control unit. The channel control unit includes a pseudo- input/output control unit which is capable of simulating opera- tions of an input/output control unit. This pseudo-input/output control unit is an exclusive input/output control unit for diag- nosing the common bus interface of a channel control unit. It executes data transfer of the program mode/direct memory access mode based on the instruction issued from the channel control unit and also notifies the data to the central control unit through the interrupt sequence after the data transfer in the direct memory access mode. Moreover, in the case where a fault in the common bus interface is detected during the control of data trans- fer, such transfer operation is suspended and it is notified through the interrupt sequence.

471116

Affiliated with

Also associated with

Rating

Diagnostic method and system of channel control unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Diagnostic method and system of channel control unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diagnostic method and system of channel control unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1210914