Path: utzoo!dciem!nrcaer!scs!spl1!laidbak!att!pacbell!lll-tis!helios.ee.lbl.gov!pasteur!ucbvax!decwrl!sun!pitstop!texsun!texsun.central.sun.com!co From: hutchson@convex.UUCP Newsgroups: comp.arch Subject: Re: PDP-10 user I/O (really: third- Message-ID: <63900017@convex> Date: 31 May 88 15:01:00 GMT Article-I.D.: convex.63900017 References: <3327@phri.UUCP> Lines: 10 Nf-ID: #R:phri.UUCP:-332700:convex:63900017:000:458 Nf-From: convex.UUCP!hutchson May 31 10:01:00 1988 Third-party operating systems that replaced the manufacturer's system: Would you count ZCPR{,2,3} on CP/M systems? ... Xenix/Double-DOS/etc. on MS-DOS systems? Amdahl's Unix(TM) is by some accounts the best way to get Unix on IBM 370-family systems. GE's CTSS runs on the Honeywell DPS-8. Pick, OS-9, Unix, Minix, etc. typically replace some other os. David Beckemeyer's micro-RTX replaces the Atari-ST's GEMDOS.