05025364 is referenced by 72 patents and cites 12 patents.

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 resolution and flexibility in making changes. A single mapper cell is used for implementing each separate mapping definition. The function code comparator for the mapper cell defines the type of memory, the range comparator defines the section of memory covered by the mapper definition, and a translator is used to translate the original address to a translated address by adding an offset to the original address. Original addresses which do not match any mapper cell definitions are mapped according to a default definition.

Title
Microprocessor emulation system with memory mapping using variable definition and addressing of memory space
Application Number
7/67987
Publication Number
5025364
Application Date
June 29, 1987
Publication Date
June 18, 1991
Inventor
Joel A Zellmer
Colorado Springs
CO, US
Agent
Karl E Bring
Assignee
Hewlett Packard Company
CA, US
IPC
G06F 7/02
G06F 12/02
G06F 9/455
G06F 9/355
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