I broadly agree, but I would quibble on the "-86" part; CP/M-86 uses a different interrupt than MS-DOS, so I suspect that the model for QDOS was CP/M-80. I'm not even sure CP/M-86 had been released when Paterson wrote QDOS.
> We knew Digital Research was working on a 16-bit OS, CP/M-86. At one point we were expecting it to be available at the end of 1979. Had it made its debut at any time before DOS was working, the DOS project would have been dropped. SCP wanted to be a hardware company, not a software company.
