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All posts by Matthias
(Deutsch) Eclipse zur nRF51822-Entwicklung Setting up Eclipse to develop for the nRF51822
(Deutsch) ICprog debuggt nRF51822 ICprog debugs nRF51822

(Deutsch) In-Circuit’s ICprog JTAG-Adapter ausprobiert Testing In-Circuit's ICprog JTAG-Adapter
(Deutsch) Wir wollen eine WunderBar!
(Deutsch) Programme für’s Fairphone compilieren
(Deutsch) nRF51822 – Ein Blick auf den Die
Synplify’s VHDL libraries deobfuscated
While working with floating point numbers in a VHDL project for a Lattice iCE40 FPGA, I encountered a synthesis error, located in the float_generic_pkg.vhd, which comes as part of Mentor Graphic’s Synplify. Unfortunately the problem could not be further investigated or even fixed, as the library is obfuscated.
I’m not sure, if the library obfuscation makes much sense here, as it is taken from publicly available resources (it’s an IEEE library). However, replacing the obfuscated library with the one available online didn’t work either, as the synthesizer tries to deobfuscate the library before using it for compilation.
From the contents of the file it is pretty obvious that a simple substitution-based obfuscation method was used, followed by a round of character transpositions within blocks of four characters.

(Deutsch) Umstellung auf Nordic Semiconductor
A free and open cell tower database for offline geolocation
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