VHDL program suggessions?

Hello!
I'm trying to get the basics of VHDL down. I've used Xilinx 14.2 to simulate the following programs and they've worked for me:
Mux, demux, adder (ripple carry and carry look ahead), shift registers and 4-bit comparator.

Can someone suggest a few more digital circuits that are good for practice? I searched in the internet, but I can't seem to find anything that has something new... I'm not looking for overly complex questions, but something that'll help me get a firm grasp on the basics...

 

FPGA4Fun has some pretty good projects for getting the basics down.

The MCPU is a very lightweight CPU that could help show you where processors come into play...

More basic ones...

Even more...

...and a bunch of links I haven't actually looked at....

Hope that helps!

 

Thank you! Those links are great!