From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 15068 invoked from network); 3 Feb 2021 08:59:39 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 3 Feb 2021 08:59:39 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id F08419C79F; Wed, 3 Feb 2021 18:59:34 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 160C99BA43; Wed, 3 Feb 2021 18:59:17 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id B5EB99BA43; Wed, 3 Feb 2021 18:59:13 +1000 (AEST) Received: from freefriends.org (freefriends.org [96.88.95.60]) by minnie.tuhs.org (Postfix) with ESMTPS id F09269BA40 for ; Wed, 3 Feb 2021 18:59:12 +1000 (AEST) X-Envelope-From: arnold@skeeve.com Received: from freefriends.org (freefriends.org [96.88.95.60]) by freefriends.org (8.14.7/8.14.7) with ESMTP id 1138wu6M011052 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 3 Feb 2021 01:58:57 -0700 Received: (from arnold@localhost) by freefriends.org (8.14.7/8.14.7/Submit) id 1138wuqd011051; Wed, 3 Feb 2021 01:58:56 -0700 From: arnold@skeeve.com Message-Id: <202102030858.1138wuqd011051@freefriends.org> X-Authentication-Warning: frenzy.freefriends.org: arnold set sender to arnold@skeeve.com using -f Date: Wed, 03 Feb 2021 01:58:56 -0700 To: egbegb2@gmail.com, arnold@skeeve.com References: <202102030759.1137x7C2013543@freefriends.org> In-Reply-To: User-Agent: Heirloom mailx 12.5 7/5/10 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re: [TUHS] AT&T 3B1 - Emulation available X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tuhs@tuhs.org Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" The 3B1 had an MC 68010. I don't truly remember how fast the real system ran. The emulated system seems to run more or less the same as the hardware did, taking my poor memory into account. The 5620 used the same processor as the 3B2, IIRC. There are emulators for both (maybe done by the same guy, I don't remember). I don't know of emulators for the 3B5 or 3B20. Arnold Ed Bradford wrote: > It seems to me today's 2GHz processors should be able to emulate a 3B (*3B > or not 3B, that is the question*) at a performance that far exceeds an > actual 3B. Is the instruction set definition and architecture of a 3B > available anywhere? > > Just wondering. I did such emulations for 68K machines and Cray machines. > > Ed Bradford ex-BTL, ex Silcon Valley, and ex IBM retiree. > > > On Wed, Feb 3, 2021 at 2:00 AM wrote: > > > emanuel stiebler wrote: > > > > > On 2021-01-29 05:49, Arnold Robbins wrote: > > > > Hello All. > > > > > > > > I have made a pre-installed disk image available with a fair amount > > > > of software, see https://www.skeeve.com/3b1/. > > > > > > Thanks for doing & making the disk images, was an easy start! > > > > You're welcome. It's a fun side project. I think I finally get the > > enjoyment of retrocomputing with emulated versions of systems one > > used in one's youth. :-) > > > > > Do you remember, ho to set up the system to have four disk drives? > > > > > > Cheers & thanks again! > > > > I don't think it can support more than 2 drives. Certainly the emulator > > cannot. I don't know about real hardware. > > > > You can split a big drive into partitions when formatting with the > > diagnostics disk, but I don't think that's what you're asking. > > > > Sorry, > > > > Arnold > > > > > -- > Advice is judged by results, not by intentions. > Cicero