Apparatus with reconfigurable counter includes memory for storing plurality of counter configuration files which respectively define plurality of predetermined counters
Patent 5109503 Issued on April 28, 1992. Estimated Expiration Date: 
May 22, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 22, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesEmulation of target system interrupts through the use of counters In-circuit emulator Size configurable data storage system Debugging microprocessor capable of switching between emulation and monitor without accessing stack area Automatic design system of logic circuit Patent #: 4964056 InventorsAssigneeApplicationNo. 355266 filed on 05/22/1989US Classes:703/24Of peripheral deviceExaminersPrimary: Lee, Thomas C.Assistant: Geckil, Mehmet B. Attorney, Agent or FirmInternational ClassG06F 015/60AbstractA reconfigurable counter is provided which includes first and second memories coupled via a common bus to a microprocessor which controls the process of configuring and reconfiguring the counter. A programmable hardware array, coupled to the microprocessor, is capable of being programmed to emulate a plurality of different counter types. The first memory stores a plurality of different counter configuration profiles, each of which corresponds to a different type counter configuraiton. In one or more of the selected counter types, different counter modes such as an up-down counter mode, pulse direction counter mode and A quad B counter modes are available. When the user indicates a selected counter profile to the microprocessor, the microprocessor writes the corresponding counter configuration profile from the first memory into the programmable hardware array using the parameters or modes of operation stored in the second memory until such time as the user indicates the choice of another counter profile to the microprocessor.Other References
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