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. 27, 2010
Filed:
Nov. 01, 2001
Craig Nemecek, Seattle, WA (US);
Craig Nemecek, Seattle, WA (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
An In-Circuit Emulation system. A real microcontroller (device under test) operates in lock-step with a virtual microcontroller so that registers, memory locations and other debugged data can be retrieved from the virtual microcontroller without disrupting operation of a real microcontroller. When an I/O read instruction is carried out followed by a conditional jump instruction dependent upon the I/O read data, the virtual microcontroller does not have adequate time to compute the jump address after receipt of I/O read data from the real microcontroller. Thus, when this sequence of instructions is detected, the virtual microcontroller pre-calculates the jump address and makes the jump decision after receipt of the I/O read data from the real microcontroller.