registers vs stacks

Question

What exactly are the advantages and disadvantages to using a register-based virtual machine versus using a stack-based virtual machine?

To me, it would seem as though a

Answer 1

Stack based VM's are simpler and the code is much more compact. As a real world example, a friend built (about 30 years ago) a data logging system with a homebrew Forth VM on a Cosmac. The Forth VM was 30 bytes of code on a machine with 2k of ROM and 256 bytes of RAM.