free ebooks for VHDL

Here is good collection of VHDL ebooks. all are free to download

VHDL Coding Styles and Methodologies,
by Ben Cohen

http://rapidshare.com/files/67353750/VHDL_-_Coding_Styles___Methodologies__Kluwer__scan_.pdf

The Designer's Guide to VHDL, 2nd Edition (Systems on Silicon)
by Peter J. Ashenden

http://rapidshare.com/files/147093924/1558606742-TheDesignerGuidetoVHDL.rar

Digital Systems Design with VHDL and Synthesis: An Integrated Approach
by K. C. Chang

http://rapidshare.com/files/161407937/0769500234.rar

Digital Systems Design Using VHDL
by Jr., Charles H. Roth

http://rapidshare.com/files/161842131/053495099x.rar

Circuit design by Volnei Pedroni... he is professor in MIT

http://www.4shared.com/get/55651919/82311ad4/MIT_Press_-_Circuit_Design_with_VHDL__2005_.html;jsessionid=1839070F1E24BC5877BA3AEB0A