Here's a VHDL library for a SPARC-compliant CPU, with many blog entries about the nature of pipelined CPU design
http://temlib.org/Quote:
Here lives the TEM VHDL library.
This is about a soft core 32bits CPU with MMU, cache and FPU. It is based on the 32bits SPARC standard.
It comes with enough peripherals to implement a computer in a FPGA.
![Image](http://temlib.org/site/wp-content/uploads/2013/10/bypass.svg)
Via the mail archives for [rescue] at
http://www.sunhelp.org/pipermail/rescue/, which are about rescuing old hardware.
(Via the discussion at
https://news.ycombinator.com/item?id=7761566)