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, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 24943 invoked from network); 21 Dec 2023 18:56:18 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 21 Dec 2023 18:56:18 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id CA5DD43E95; Fri, 22 Dec 2023 04:56:16 +1000 (AEST) Received: from mercury.lcs.mit.edu (mercury.lcs.mit.edu [18.26.0.122]) by minnie.tuhs.org (Postfix) with ESMTPS id A000B43E93 for ; Fri, 22 Dec 2023 04:56:10 +1000 (AEST) Received: by mercury.lcs.mit.edu (Postfix, from userid 11178) id A29FA18C09C; Thu, 21 Dec 2023 13:56:09 -0500 (EST) To: coff@tuhs.org, paul.winalski@gmail.com Message-Id: <20231221185609.A29FA18C09C@mercury.lcs.mit.edu> Date: Thu, 21 Dec 2023 13:56:09 -0500 (EST) From: jnc@mercury.lcs.mit.edu (Noel Chiappa) Message-ID-Hash: TQ3BSSG4XVRSFSHOR5VC5KRSN5MXK5YG X-Message-ID-Hash: TQ3BSSG4XVRSFSHOR5VC5KRSN5MXK5YG X-MailFrom: jnc@mercury.lcs.mit.edu X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: jnc@mercury.lcs.mit.edu X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [COFF] Re: IBM 1403 line printer on DEC computers? List-Id: Computer Old Farts Forum Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: > From: Paul Winalski > The 1403 attached to S/360/370 via a byte multiplexer channel ... > The question is, did they have a way to attach the 1403 to any of their > computer systems? There's a thing called a DX11: https://gunkies.org/wiki/DX11-B_System_360/370_Channel_to_PDP-11_Unibus_Interface which attaches a "selector, multiplexer or block multiplexer channel" to a UNIBUS machine, which sounds like it could support the "byte multiplexer channel"? The DX11 brochure only mentions that it can be "programmed to emulate a 2848, 2703 or 3705 control unit" - i.e. look like a peripheral to a IBM CPU; whether it could look like an INM CPU to an IBM peripheral, I don't know. (I'm too lazy to look at the documentation; it seems to be all there, though.) Getting from the UNIBUS to the -10, there were off-the-shelf boxes for; the DL10 for the KA10 and KI10 CPUs, and a DTE20 on a KL10. It all probably needed some coding, though. Noel