Found this cute little package on the net. It's a z-80 emulator running under a cp/m emulator running on Linux. You can use dd to dump your old disks and have a working CP/M environment. I'm not sure any of my CP/M disks are readable anymore. But it's quite a time warp to find yourself staring at an A> prompt and be able to drop into a z-80 monitor.

Woohoo! Check this out...

A>mbasic
BASIC-80 Rev. 5.21
[CP/M Version]
Copyright 1977-1981 (C) by Microsoft
Created: 28-Jul-81
34872 Bytes free
Ok

For the uninitiated, the z-80 was a microprocessor manufactured by a company called Zilog back in the late 70's|early '80's. It was a lot like the Intel 8080, but much, much better.  [It turns out that the z-80 is still being manufactured, details at zilog.com. ] CP/M is 'control program for microcomputers', written by Gary Kildall at Digital Research - one of the most successful of the early operating systems. It is no coincidence that Microsoft's IBM DOS version 1, looked a whole lot like CP/M. 

Hmm, maybe I can bring back the old Crossroads Bar and Grill...

Hey, computer, would ya' make me some coffee... By the way, how many people called today? Any private mail? Who's it from? Read it, please. Thanks...