Xref: utzoo comp.sys.mac:39083 comp.sys.mac.programmer:9322 Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!ux1.cso.uiuc.edu!pequod.cso.uiuc.edu!dorner From: dorner@pequod.cso.uiuc.edu (Steve Dorner) Newsgroups: comp.sys.mac,comp.sys.mac.programmer Subject: Re: Todd Rundgren's Macintosh OS Message-ID: <1989Sep27.220839.13648@ux1.cso.uiuc.edu> Date: 27 Sep 89 22:08:39 GMT References: <16409@brunix.UUCP> <4399@internal.Apple.COM><32895@srcsip.UUCP> Sender: news@ux1.cso.uiuc.edu (News) Reply-To: dorner@pequod.cso.uiuc.edu (Steve Dorner) Organization: University of Illinois at Urbana-Champaign Lines: 21 In article <32895@srcsip.UUCP> mnkonar@src.honeywell.com (Murat N. Konar) writes: >As I understand it, there is no "emulation" of UNIX on top of >Mach, rather Mach is a UNIX variant (a cool one) that is compatible >with Berkley UNIX 4.3 The mach kernel is a pretty basic operating system, providing only minimal services. You *always* put something "on top of" mach; in this way, it's somewhat like IBM's VM. NeXT has put 4.3bsd UNIX "on top of" mach; sometimes, this combination is referred to as "mach", but that's not *really* correct. Finally, NeXT has a windowing environment, called NeXTStep, that runs on top of UNIX, that runs on top of mach. -- Steve Dorner, U of Illinois Computing Services Office Internet: s-dorner@uiuc.edu UUCP: {convex,uunet}!uiucuxc!dorner IfUMust: (217) 244-1765