I see people buying all these old machines (everything from old DEC/IBM to newer non-mainframe SGI) and I'm super jealous for a few minutes. Then I consider the

I see people buying all these old machines (everything from old DEC/IBM to newer non-mainframe SGI) and I'm super jealous for a few minutes. Then I consider the power-consumption. That's what makes me think, "hmmmm, maybe I'll just build a mini-emulation with a few Raspberry Pis or something". Yes, it would seriously not be the same at all. But having supported AS/400 with reel-to-reel tape drives... and huge greenbar printer... yeah, maybe emulation is just fine.