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 5590 invoked from network); 28 Sep 2020 23:22:46 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 28 Sep 2020 23:22:46 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id E41CB9CED7; Tue, 29 Sep 2020 09:22:41 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 1DBF59CEC7; Tue, 29 Sep 2020 09:22:01 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 83E2B9CEB2; Tue, 29 Sep 2020 09:21:58 +1000 (AEST) Received: from mercury.lcs.mit.edu (mercury.lcs.mit.edu [18.26.0.122]) by minnie.tuhs.org (Postfix) with ESMTPS id 0832A9CE8C for ; Tue, 29 Sep 2020 09:21:58 +1000 (AEST) Received: by mercury.lcs.mit.edu (Postfix, from userid 11178) id CD8E118C0DA; Mon, 28 Sep 2020 19:21:56 -0400 (EDT) To: tuhs@minnie.tuhs.org Message-Id: <20200928232156.CD8E118C0DA@mercury.lcs.mit.edu> Date: Mon, 28 Sep 2020 19:21:56 -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" > From: Pete Turnbull > The SRUNL signal that was mentioned isn't likely to cause a problem That was just a guess on my part as to the exact cause. It is definite, though, that Q22 memory won't work with an LSI-11/2 (M7270); I just tried it. I didn't touch any of the other boards; just swapped the LSI-11/2 for a KDF11-A (M8186), everything worked fine; put the LSI-11/2 back, dead again. I'll try an LSI-11 (M7264) tomorrow, make sure it's the same; it and the LSI-11/2 are similar enough that it should, but it'd be good to confirm it. Then back to trying to work out why Mini-Unix is so fragile for me. Has anyone else ever worked with Mini-Unix, and if so, any tips? Noel