The aim of a Rapid Prototyping System for electronic circuit design is to obtain a physical model as similar as possible to the final system as the hosting technology can allow. Large digital integrated circuits are substituted by complex and advanced Field Programmable Gate Arrays (FPGA’s) which emulate the whole circuit functionality. These devices can provide more information than the pure circuit emulation itself, they provide a special scheme to access the device configuration and execution time information of the design state registers. This paper describes the UNSHADES-1 system and is focused on the set of software tools that provide easy management and access to this execution time information.