Provides LeonardoSpectrum which is a CPLD, FPGA and desktop ASIC synthesis solution.
http://www.exemplar.com/
For quick access.
http://www.eng.auburn.edu/department/ee/mgc/vhdl.html
FMF style VHDL models of IDT FIFOs
http://vhdl.org/fmf/fmf_public_models/idt_fifo/
Ruby is a notation and design discipline intended for the development of regular integrated circuits and similar hardware and software architectures.
http://web.comlab.ox.ac.uk/oucl/work/geraint.jones/ruby/
Collection of Verilog HDL source code examples, such as shift register, clock divider, counter, decoder, microcontroller derivative. Lectures by Mr. Noel S. Patron: Introduction to Verilog, Sample Verilog programs.
http://cengine.topcities.com/ce180/verilog/
VHDL Mode is an Emacs major mode for editing files containing VHDL code.
http://emacs.org/hdl/vhdl-mode.html
Premier site for VHDL component simulation models.
http://www.eda.org/fmf/wwwpages/
David Murray.
http://www.iol.ie/~dmurray/Prism/Prism_Editor.html