I’ve talked a bit about One-Der my 32-bit CPU project before. It finally has seen the light of day.
Here’s the article in DDJ: http://www.drdobbs.com/embedded-systems/the-one-instruction-wonder/221800122
Hands on with One-DEr
Here’s the simulator in action (actually the simulator has had a face lift and has more verbose commands and better output now):
Coming soon: A Forth compiler, interrupts, debugging support and more!