Jan L Harrington's excellent text, "The A/UX Handbook" states that, while the Macintosh SE/30 is not formally supported by A/UX 1.0, the operating system could be made to run on that platform. Formal support for the SE/30 and the Mac IIci was announced with A/UX 1.1.1, as shown by this May 1990 comp.unix.aux posting by an Apple engineer:

From: [email protected] (Brian Bechtel)
Newsgroups: comp.unix.aux
Subject: Re: AUX on SE/30?
Keywords: SE/30, AUX 2.0
Message-ID: <[email protected]>
Date: 4 May 90 03:03:52 GMT
References: <[email protected]> <[email protected]>
Distribution: eunet,world
Organization: Apple Computer Inc, Cupertino, CA
Lines: 12
Posted: Fri May  4 04:03:52 1990


In article <[email protected]> [email protected] (William Roberts) writes:
>In fact, A/UX 1.1.1 might well work on the SE/30, but it isn't
>supported, other than having all the startup messages made
>narrow enough to fit on an SE/30 screen :-)

I don't know how or why this keeps coming up, but A/UX 1.1.1 was
issued precisely to support two machines: the IIci and the SE/30.  A/UX
1.1.1 fully supports the SE/30, it was meant from the start to support
the SE/30, and it is stated in the official press release that it
supports the SE/30.

--Brian [email protected]  "A/UX 1.1.1 supports the SE/30"