Digital Core Design: Synthesizable VHDL and Verilog HDL IP Cores.
IDT FIFO models: FMF style VHDL models of IDT FIFOs
Micron Technology: VHDL, Verilog, and IBIS models of Micron's memory products
Microsystems Prototyping Laboratory VHDL Model Collection: VHDL models from Mississippi State University
Synthesizable VHDL Model of 8051: A synthesizable 8051 model
The Hamburg VHDL Archive: We intend to provide a collection of free, i.e. public-domain or shareware, VHDL documentation, models, and tools.