I never tried playstation1 emulator before, although I followed the discussion keenly. A lot of my colleagues are into gaming, so I though it'd be a good chance to show off my Z.
I checked out the psx4all website and downloaded the latest b4/4 release, and tried it on my C3100 running cacko, and was stunned to find it work (I borrowed a copy of Azure Dreams, didn't know if it worked, now added to Tyrannozauruse's list of compatible games).
Amazing, in a way until you've tried it yourself you won't believe it's possible (even though I've used qemu and vmware for some time, doing this sort of thing on the Z somehow seems harder).
Great! I look forward to future speedups.