[shrek]

I had a few hours to waste today so I've been playing with emulation on my laptop. It's extremely slow. Boot takes 10 minutes and changing the wallpaper takes another 5 or so. MAME reports 8-12%. Something I have noticed is that on Windows, running PowerShell as an administrator and launching MAME from that will give you a small speed increase. Don't know why but I'll take it. I'm attaching a few pictures below of the progress I've made so far. When logging in, only do it as root. Otherwise it takes forever to load NetScape on the guest account and the setup probably isn't much better. With root you wait for the default apps to open, then close the icon catalog and console. Set the wallpaper to solid. This reduces the lag quite a bit, so that you can actually move windows around. 

Thanks dexter1 for the disk image with IRIX 6.2, and for pointing us towards the correct PROM image. 
In case anyone is wondering, the host has an i5-3320M, 8GB RAM, an SSD, and Windows 10 LTSC.