Boots – shoes – and leggings
Patent
1988-12-30
1992-03-17
Lee, Thomas C.
Boots, shoes, and leggings
3642419, 3642408, 364260, 3642405, 364DIG7, 395250, 395575, G06F 1314
Patent
active
050974106
ABSTRACT:
A system structured to transfer control information between an IFA (I/O interface adapter) and an I/O processor, and I/O data between an IFA and a CDB (channel data buffer) has separate interfaces for these transfers. The control interface includes a multi-mode, bidirectional control data bus, a control mode bus for establishing the mode of the bus, and a check interface on which the IFA provides error information. The data interface includes a multi-mode, bidirectional data transfer bus, respective SYNC and ACCEPT lines for transferring time-phased control signals to establish the mode of the data transfer bus, and a parity line to indicate to the IFA the parity of the SYNC and ACCEPT lines.
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Hester Richard L.
Jackowski Stefan P.
James Peter N.
Moyer James T.
Rush Robert G.
Coleman Eric
International Business Machines - Corporation
Lee Thomas C.
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