1
Joel A Zellmer: Microprocessor emulation system with memory mapping using variable definition and addressing of memory space. Hewlett Packard Company, Karl E Bring, June 18, 1991: US05025364 (72 worldwide citation)

A memory mapper for an emulation system suitable for a microprocessor-based system for any size microprocessor is disclosed which uses function code comparators, range comparators, and offset values for individual mapping definitions, thereby providing faster mapping of emulation memory with higher ...


2
David L Neuder, Joel A Zellmer: Timing or logic state analyzer with automatic qualified inferential marking and post processing of captured trace data. Hewlett Packard Company, Edward L Miller, February 3, 1987: US04641348 (21 worldwide citation)

A timing or logic state analyzer automatically places marks into a captured trace measurement. The definition of each mark may include an associated collection of logical conditions in the captured data. Once the trace measurement is complete the analyzer searches through the captured data, locates ...


3
Joel A Zellmer: Timing analyzer with combination transition and duration trigger. Hewlett Packard Company, Edward L Miller, January 22, 1985: US04495642 (20 worldwide citation)

A timing analyzer incorporates pattern transition and pattern duration triggering. A transition detector detects transitions into or out of selected patterns occurring among the inputs of the analyzer. A time duration comparator compares a selected logical sense of the pattern against a variable dur ...