There's an interesting variation on the 6502 instruction set defined and emulated in the minecraft world, which brings in some 65816 instructions and also multiply and divide.



The inventor is Eloraam. There's at least one emulator and assembler for the machine. As it's intended for industrial control in a virtual environment it's not necessarily good for physical implementation, but then again it might be: FGPA is certainly fine with fast multiplication.

Cheers
Ed

(I was ready to post about this on the 15th, as the forum went down, and have since been scooped by Hackaday and Slashdot)
http://games.slashdot.org/story/12/05/2 ... -processor
http://hackaday.com/2012/05/20/building ... -minecraft

I was just waiting, i knew someone would make this!
If i am right this is a Minecraft mod, and that means everyone has to install the mod into Minecraft, which is not always trivial... I would like to see the 6502 in redstone chips, since that is a server mod, it doesn't require to mod the client, so anyone can use it.