Subject: Re: MachTen vs. MacBSD
To: Anita Holmgren <>
From: Jim Lynch <>
List: macbsd-general
Date: 12/20/1993 11:48:49
>At 12:43 AM 12/18/93 -0800, Jim Lynch wrote:
>>Well, that's what Anita claims: that Mach runs in supervisor state and runs
>>processes in user state (therefore, it is claimed by Anita that Mach makes
>>use of user state.)
>This is true.  With Professional MachTen, the kernel runs in supervisor
>state and applications run in user state.
>>Compare this with Mac OS which does not make use of user state for anything
>>(or does it? I dunno...).
>Right.  MacOS runs entirely in supervisor state.
>>This is why I say Mach actually uses (i.e., makes use of) user state.
>>My question to Anita was really: "How _else_ are you claiming that Mach is
>>like NetBSD?"
>MachTen is a port of 4.3BSD Unix, with networking from the 4.3 Reno
>release.  It is a complete port.  The only thing we left out intentionally
>was Unix games, since we thought that Mac games were better.  And, we
>incorporated GNU software development tools.  Is that what you were asking?
>Tenon Intersystems
>1123 Chapala Street
>Santa Barbara, CA 93101
>FAX: 805-962-8202


Yes; thank you. That's what I wanted to know.