System for generating status signals of second bus on first bus

Details System for generating status signals of second bus on first bus System for generating status signals of second bus on first bus

1995-05-02

1997-11-18

Meky, Moustafa M.

G06F 1502

Patent

active

056897251

ABSTRACT:
The present invention is therefore directed to enhancing the efficiency with which input/output controllers execute operations in response to requests from another device, such as a main controller. In accordance with exemplary embodiments, a compact set of status information signals is communicated from an input/output controller to a main controller such that the main controller can provide error control (that is, monitor input/output controller operation) without the use of interrupts. As a result, the main controller can sequentially and continuously supply multiple commands of a transaction to the input/output controller without the use of a multiple hardware interrupts. System hardware can therefore be used more efficiently and input/output controller operation can be accelerated, thereby increasing system performance.

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"X3T9.2/855D, Revision 12b, Jun. 7, 1993, Reference No. ISO/IEC; 199x/ANSI X3.199x", printed Jun. 11, 1993, pp. i-ix and 1-65.

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