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 26061 invoked from network); 30 Sep 2020 23:17:17 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 30 Sep 2020 23:17:17 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id AC5869CF0D; Thu, 1 Oct 2020 09:17:12 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id A5F989CECD; Thu, 1 Oct 2020 09:16:38 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id AF1A79CECD; Thu, 1 Oct 2020 09:16:35 +1000 (AEST) Received: from mercury.lcs.mit.edu (mercury.lcs.mit.edu [18.26.0.122]) by minnie.tuhs.org (Postfix) with ESMTPS id C54EB9CEC6 for ; Thu, 1 Oct 2020 09:16:34 +1000 (AEST) Received: by mercury.lcs.mit.edu (Postfix, from userid 11178) id B780418C0BE; Wed, 30 Sep 2020 19:16:33 -0400 (EDT) To: tuhs@minnie.tuhs.org Message-Id: <20200930231633.B780418C0BE@mercury.lcs.mit.edu> Date: Wed, 30 Sep 2020 19:16:33 -0400 (EDT) From: jnc@mercury.lcs.mit.edu (Noel Chiappa) Subject: Re: [TUHS] Fwd: Choice of Unix for 11/03 and 11/23+ Systems 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: jnc@mercury.lcs.mit.edu Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" > I think before I try debugging it directly, I'll try one of the other > Mini-Unix repositories; the one I've been using (from Bob Eager's site) > may have some bit-rot. Well, foo, the one from TUHS has the same symptom: random re-starts. Looks like I'm going to have to actually debug this. I guess the first step is to work out how the re-start is happening; I suspect it's not a trap (I'll check, but I think Mini-Unix catches them all). My best guess is a jump to 0 (somehow); if so, that should be easy to catch. Then the next thing is to try and work out where/how/why that is happening. Following a suggestion of Warner Losh, I think there's a good idea on how to make progress, which is to mount the Mini-unix pack under V6 (running on a simulator); that's rock-solid - and the V6 tool-chain can be used to build Mini-Unix binaries. And here I thought it was going to be easy to convert Mini-unix to run on an -11/03. Well, it still might - if I can get Mini-Unix to run reliably! Noel