The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 1996
Filed:
Jan. 04, 1996
Stephen T Rowland, Folsom, CA (US);
Dahmane Dahmani, Folsom, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A computer system comprising programmable I/O recovery includes a device selection unit, programmable I/O recovery time registers, and a decrementer for specifying I/O recovery times for a plurality of I/O peripheral components. The programmable I/O recovery time registers contain time values, and the time values are programmable by the user of the computer system. The computer system interfaces the I/O peripheral components on an external bus through a plurality of bus cycle signals generated by cycle generation logic. For each I/O bus cycle on the external bus, the device selection unit identifies the I/O device involved in the I/O bus cycle. The device selection unit selects a time value from the programmable I/O recovery time registers corresponding to the I/O device identified, and loads the time value selected in the decrementer. Upon termination of the bus cycle, the device selection unit generates a cycle start signal to enable counting in the decrementer. The decrementer begins to count down from the time value loaded, and when the decrementer reaches a terminal count, a ready signal is generated. The ready signal enables the cycle generation logic to generate a successive bus cycle for the same I/O peripheral component.