Andreas Ehliar

You can reach me by calling 013-288956 or you can visit my office at 3B:522 in the B-building. You can of course mail me as well at ehliar@isy.liu.se.

Misc stuff

• Min lunchguide för restauranger i närheten av Linköpings universitet
• Some programs/hardware I have written which others might find useful.

Upplysning lecture series

Upplysning is a lecture series arranged by the Lysator academic computer society. I've been invited to give four lectures to date and some of them might be of interest to you:

• Linux/UNIX tips and tricks (Together with Kent Engström) (Lecture notes) (Movie)
• Emacs tips and tricks (Together with Johan Busk Eriksson and Hans Lundmark) (Lecture notes) (Movie)
• I've also given a lecture about the low level architecture of the Motorola 68000 and another lecture about 3d graphics in Linux for Lysator but there are no lecture notes available for these lectures.

Publications

The publications listed below are presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

Ph.D. thesis

Andreas Ehliar
Performance driven FPGA design with an ASIC perspective
Linköping Studies in Science and Technology, Dissertations, No. 1237, Linköping, Sweden, 2009

Licentiate thesis

Andreas Ehliar
Aspects of System-on-Chip Design for FPGAs
Linköping Studies in Science and Technology, Thesis No. 1371, Linköping, Sweden, June 2008

Journal papers

Per Karlström, Andreas Ehliar and Dake Liu
High-performance, low-latency field-programmable gate array-based floating-point adder and multiplier units in a Virtex 4
IET Computers & Digital Techniques, Vol. 2, No. 4, pp. 305-313, July 2008

Conference papers

Andreas Ehliar, Per Karlström, Dake Liu
A high performance microprocessor with DSP extensions optimized for the Virtex-4 FPGA
FPL 2008, International Conference on Field Programmable Logic and Applications (FPL), Heidelberg, Germany, September 2008

Andreas Ehliar, and Dake Liu
Thinking outside the flow: Creating customized backend tools for Xilinx based designs
FPGA World 2007, Stockholm,Sweden, September 2007
You can download the source code for PyXDL here.

Andreas Ehliar, and Dake Liu
An FPGA open source network-on-chip architecture
FPL, 17th International conference on Field Programmable Logic and Applications, Amsterdam, Netherlands, August 2007
You can download the source code for the FPGA optimized NoC here. This page also contains an important errata for the paper.

Per Karlström, Andreas Ehliar, and Dake Liu
High Performance, Low Latency FPGA based Floating Point Adder and Multipler Units in a Virtex 4
Norchip, Linköping, Sweden, November, 2006

Daniel Wiklund, Andreas Ehliar, and Dake Liu
Design of an Internet core router using the SoCBUS network on chip
Proc of the International Symposium on Signals, Circuits, and Systems (ISSCS), Iasi, Romania, July 2005

Johan Eilert, Andreas Ehliar, and Dake Liu
Using low precision floating point numbers to reduce memory cost for MP3 decoding
Proc of the IEEE Int'l Workshop on Multimedia Signal Processing (MMSP), Siena, Italy, Sep 2004

Mikael Olausson, Andreas Ehliar, Johan Eilert, and Dake Liu
Reduced floating point for MPEG1/2 Layer III decoding
Proc of the Int'l conference on acoustics, speech and signal processing (ICASSP), Montreal, Canada, May 2004

Exjobb

Andreas Ehliar, Johan Eilert
A hardware MP3 decoder with low precision floating point intermediate storage

Other

Andreas Ehliar
Under skinnet på MC68000
Datormagazin, May 2009, pp. 44-45

Andreas Ehliar
Stor guide till emacs
Datormagazin, December 2010, pp. 80-81

Teaching

I have been involved in some way in almost all courses that we have. The following is a list of courses where I have been involved as more than a teaching assistant/lab assistant:

• Ph.D. course on FPGA design Lectures, course development
• TSEA26: Design of embedded DSP processors Examiner, lectures, course development
• TSEA44: Computer hardware - a computer system on a chip (2004-2008, course development)
• TSEA28: Datorteknik Y (Examiner and lectures)
• TSEA24: Digitalteknik (2007, examiner)
• TDDC75: Diskreta strukturer (2007, lecturer)