G - Physics – 06 – F
Patent
G - Physics
06
F
354/105, 354/233
G06F 13/14 (2006.01) G06F 13/12 (2006.01) G06F 13/42 (2006.01) G06F 15/17 (2006.01) G06F 11/10 (2006.01)
Patent
CA 1285658
CPU CHANNEL TO CPU CHANNEL EXTENDER ABSTRACT OF DISCLOSURE A system is described with which a channel of an IBM central processor unit (CPU) may communicate at channel speed with a channel of another CPU over extended distances. The system incorporates coupler units at each CPU site and each coupler unit has high speed dedicated data transfer logic that is enabled during data transfer by a microprocessor. During initial selection sequences the microprocessor controls and sets up conditions for data communication through a high speed serial full duplex data link capable of accommodating channel speed data transfers. Each coupler employs suitable parallel to serial and serial to parallel converters. Parity error checks are performed throughout the system to detect errors and alert the system of the occurrence of errors. Data transfers occur without interlock across the link and in a rapid manner.
532050
Armstrong C. Peter
Nusbam Mitchell J.
Steiner Ronald P.
Yursis Paul
Armstrong C. Peter
Bereskin & Parr
Channelnet Corporation
Nusbam Mitchell J.
Steiner Ronald P.
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