M/PM OS?

< Ok time to show my ignorance again. I just brought home a logic analyze <that has a built in computer that's running M/PM II Ver 2.1. I know M/PM Thats MP/M. <is a multi-tasking version of CPM but that's about all. Can someone tell m <more about it or point me toward a good FAQ? What kind of processor do <this usually run on? I have no one idea what's inside this box. One of 8080, z80, z180, 8085. It's cpm with multitasking addins basically. When it was ported to 80x86 it became CCPM. <the notes that I got with this stuff hints that it will run "regular" CPM <programs. What do you know about that? It does IF the programs don't run around the BDOS, the MPM bios is often banked and direct bios calls tend to muck up. Allison