Boots – shoes – and leggings
Patent
1993-09-15
1996-08-20
Teska, Kevin J.
Boots, shoes, and leggings
364239, 3642397, 3642404, 3642418, 364DIG1, G06F 1300
Patent
active
055487351
ABSTRACT:
A system and method for asynchronously managing the issuance of program I/O store instructions from a high speed central processor to a multiplicity of relatively lower speed I/O adapter devices. An interface between the central processor and the I/O adapter devices includes a program I/O store queue, a state machine, and a token pool related in count to the concurrent processing capabilities of I/O controllers. The interface queue includes information for uniquely identifying program I/O store instructions by adapter device destination and user application program to manage error recovery. As preferably implemented, the interface system and method also distinctly manages program I/O instructions requiring synchronous execution, such as program I/O load instructions.
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IBM RISC System/6000 Technology, 1980, Austin, Texas, "RISC System/6000 Hardware Overview", H. B. Bakoglu et al, pp. 8-15.
IBM RISC System/6000 Technology, 1990, Austin, Texas, "RSC System/6000 I/O Structure", R. Arimilli et al, pp. 56-60.
IBM TDB, "I/O Channel Controller System Bus Interface Unit Receive Controller", vol. 32, No. 5B, Oct. 1989, p. 72.
J. Nicholson et al. IBM RISC System/6000 Tech. "RISC System/6000 I/O Structure".
Chen Wen-Tzer T.
Thurber Steven M.
Tsao Gary Y.
Dillon Andrew J.
International Business Machines - Corporation
McBurney Mark E.
Mohamed Agni
Teska Kevin J.
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