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 26428 invoked from network); 20 Dec 2023 19:31:47 -0000 Received: from minnie.tuhs.org (2600:3c01:e000:146::1) by inbox.vuxu.org with ESMTPUTF8; 20 Dec 2023 19:31:47 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id B5F5B43ED9; Thu, 21 Dec 2023 05:31:45 +1000 (AEST) Received: from mercury.lcs.mit.edu (mercury.lcs.mit.edu [18.26.0.122]) by minnie.tuhs.org (Postfix) with ESMTPS id 0B83543ED1 for ; Thu, 21 Dec 2023 05:31:43 +1000 (AEST) Received: by mercury.lcs.mit.edu (Postfix, from userid 11178) id DC1C918C092; Wed, 20 Dec 2023 14:31:41 -0500 (EST) To: coff@tuhs.org Message-Id: <20231220193141.DC1C918C092@mercury.lcs.mit.edu> Date: Wed, 20 Dec 2023 14:31:41 -0500 (EST) From: jnc@mercury.lcs.mit.edu (Noel Chiappa) Message-ID-Hash: M5D3FG2VRHTQXKEMPVKXQDYNNSLCMJ2H X-Message-ID-Hash: M5D3FG2VRHTQXKEMPVKXQDYNNSLCMJ2H 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: Terminology query - 'system process'? List-Id: Computer Old Farts Forum Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: > From: Derek Fawcus > How early does that have to be? MP/M-1.0 (1979 spec) mentions this, as > "Resident System Processes" ... It was a banked switching, multiuser, > multitasking system for a Z80/8080. Anything with a microprocessor is, by definition, late! :-) I'm impressed, in retrospect, with how quickly the world went from proceesors built with transistors, through proceesors built out discrete ICs, to microprocessors. To give an example; the first DEC machine with an IC processor was the -11/20, in 1970 (the KI10 was 1972); starting with the LSI-11, in 1975, DEC started using microprocessors; the last PDP-11 with a CPU made out of of discrete ICs was the -11/44, in 1979. All -11's produced after that used microprocessors. So just 10 years... Wow. Noel