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[49.195.47.112]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-70b03a9d996sm7859893b3a.96.2024.07.08.05.29.16 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Jul 2024 05:29:18 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.600.62\)) From: Peter Yardley In-Reply-To: Date: Mon, 8 Jul 2024 22:29:04 +1000 Content-Transfer-Encoding: quoted-printable Message-Id: <67F367A2-71D5-4AB8-A1AF-2DBE37F28A6C@gmail.com> References: To: Dave Horsfall X-Mailer: Apple Mail (2.3774.600.62) Message-ID-Hash: WHSKXL4VT67IVZ7BHMNKXOKYVFXLRP6M X-Message-ID-Hash: WHSKXL4VT67IVZ7BHMNKXOKYVFXLRP6M X-MailFrom: peter.martin.yardley@gmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: The Eunuchs Hysterical Society X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Anyone ever heard of teaching a case study of Initial Unix? List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Just a recollection =E2=80=A6 Our department sold our Nova to the Navy (RAN) as part of a programming = course on Novas and microcomputers. The Navy still used the Novas as = gunnery computers, possibly amongst things, ours was going to be used = for training. It had core memory, which was an advantage in the turrets = of the frigates (hard drives of the time didn=E2=80=99t survive the = shock). One of my colleagues used to fix the core memory using a = magnifying loupe and a fine soldering iron. We had Algol, ForTran and 8080 and 6502 cross assemblers amongst other = things. There was a 16 user editor and you had to line up on the system = console to be able to do a compilation (we were running a = foreground/background OS, it was a pretty small system). We all used the = same directory and had to name our files with our initials. =20 > On 8 Jul 2024, at 8:00=E2=80=AFAM, Dave Horsfall = wrote: >=20 > On Fri, 5 Jul 2024, Peter Yardley wrote: >=20 >> The DG Nova had a pretty nice architecture. 2 accumulators, 2 index=20= >> registers, program counter, status register. No stack register tho.=20= >> There was a micro processor version by Fairchild. >=20 > The story behind it is interesting too. The designer at DEC (Ed de=20 > Castro) tried to promote it, Ken Olson didn't like it, so he left to = form=20 > Data General and created the DG Nova. >=20 > OK, not a Unix box... >=20 > -- Dave .1.3.6.1.4.1.8852.4.2 Peter Yardley peter.martin.yardley@gmail.com