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=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 28072 invoked from network); 10 Apr 2021 12:07:35 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 10 Apr 2021 12:07:35 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id B386A94129; Sat, 10 Apr 2021 22:07:24 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 8F02793D6B; Sat, 10 Apr 2021 22:06:47 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (1024-bit key; unprotected) header.d=pobox.com header.i=@pobox.com header.b="jRFG8Q03"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 0722E93D6B; Sat, 10 Apr 2021 22:06:43 +1000 (AEST) Received: from pb-smtp20.pobox.com (pb-smtp20.pobox.com [173.228.157.52]) by minnie.tuhs.org (Postfix) with ESMTPS id 4B6FA93D69 for ; Sat, 10 Apr 2021 22:06:41 +1000 (AEST) Received: from pb-smtp20.pobox.com (unknown [127.0.0.1]) by pb-smtp20.pobox.com (Postfix) with ESMTP id A0DC011C752; Sat, 10 Apr 2021 08:06:40 -0400 (EDT) (envelope-from davida@pobox.com) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=pobox.com; h=content-type :content-transfer-encoding:from:mime-version:subject:date :message-id:references:cc:in-reply-to:to; s=sasl; bh=FG4eJ2yM/it gatLoIAh5R48X+Zw=; b=jRFG8Q03BX3cY1qaW3J54UfaTWq46JF7RfC/6zloF6V NE5icbEc1I+nOa+ecA79+mUgXBDnycKxHI+sUWmAtfmWfoFpMz6hAZMzamUa0XMr q2Ze/RAHfpZ1CNEnQpjGp+Qu+c2STwtBxP9SDFHh/HJigvl00gDKWoPTtrQILk34 = DomainKey-Signature: a=rsa-sha1; c=nofws; d=pobox.com; h=content-type :content-transfer-encoding:from:mime-version:subject:date :message-id:references:cc:in-reply-to:to; q=dns; s=sasl; b=BHcY7 gkSxDoZayfT9H8tFMvB+MzKPAG5sFJbqlkW4H7N4SsI7XiQX+Mk3AD7DbooY6dmO XbjtlTdiBCms0a6RZC0G5aowLD7ngwc4IPYl9IN+z96b9Gly2q+SjA/4XuOkHgLj WAfjtEzyydP8C6VkjwnCOKRlCS8KamCdkt+xPU= Received: from pb-smtp20.sea.icgroup.com (unknown [127.0.0.1]) by pb-smtp20.pobox.com (Postfix) with ESMTP id 998C711C751; Sat, 10 Apr 2021 08:06:40 -0400 (EDT) (envelope-from davida@pobox.com) Received: from [192.168.0.19] (unknown [123.211.15.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by pb-smtp20.pobox.com (Postfix) with ESMTPSA id EA4CE11C74F; Sat, 10 Apr 2021 08:06:37 -0400 (EDT) (envelope-from davida@pobox.com) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable From: David Arnold Mime-Version: 1.0 (1.0) Date: Sat, 10 Apr 2021 22:06:34 +1000 Message-Id: <382F4422-D6B8-4749-9927-9EC19FE9CADD@pobox.com> References: In-Reply-To: To: Dave Horsfall X-Mailer: iPhone Mail (18D70) X-Pobox-Relay-ID: 33C8899E-99F5-11EB-B6DA-E43E2BB96649-29049682!pb-smtp20.pobox.com Subject: Re: [TUHS] SUN (Stanford University Network) was PC Unix 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: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" > On 10 Apr 2021, at 13:17, Dave Horsfall wrote: >=20 > =EF=BB=BFOn Fri, 9 Apr 2021, Paul Ruizendaal via TUHS wrote: >=20 >> Z80 CP/M machines were still competitive in 1981-1983 (Osborne, Kaypro) >=20 > And the Aussie Microbee... Wonderful machine, and easily hacked upon. >=20 > For example, you could expand the memory by soldering several chips on top= of each other and addressing the CS* line via bank-switching. 6116 static RAM meant no mucking about with DRAM refresh either.=20 And the single switch upgrade from 2MHz to 4MHz. Happy days.=20 But I never tried to get a Unix on it. UZI or Fuzix might work? d