From: jnc@mercury.lcs.mit.edu (Noel Chiappa)
To: tuhs@minnie.tuhs.org
Cc: jnc@mercury.lcs.mit.edu
Subject: Re: [TUHS] Fwd: Choice of Unix for 11/03 and 11/23+ Systems
Date: Thu, 24 Sep 2020 09:04:02 -0400 (EDT) [thread overview]
Message-ID: <20200924130402.EDE4718C09F@mercury.lcs.mit.edu> (raw)
> From: Paul Riley
> On my physical '03 I have twin Sykes floppy drives. I note that in the
> LSX archives there is a Sykes driver, so I can adapt that I guess.
Yes, here:
https://www.tuhs.org/cgi-bin/utree.pl?file=LSX/sys/sykfd.c
It looks like it should be a straight drop-in, to run it on Mini-Unix. Not
sure if your controller is the exact same model, though? Is there any
documentation on yours? (I haven't done any searching.)
If you want to boot from it, you'll need to write a bootstrap for it; I poked
around, but didn't see one. (Not sure how they booted machines with one, back
in the day; maybe it wasn't the only drive, and they booted off something
else.) You can probably modify the RX one:
https://www.tuhs.org/cgi-bin/utree.pl?file=LSX/src/rxboot.s
https://www.tuhs.org/cgi-bin/utree.pl?file=LSX/src/rxboot2.s
Note that this is a 2-stage bootstrap, apparently as a result of the small
hardware block size on the RX.
And of course there's still the issue of 'how to get bits onto it'. Can
floppies for it be written on some other kind of machine? If so, someone on
the Classic Computers list:
http://www.classiccmp.org/mailman/listinfo/cctalk
may be able to help you write those, or an RL02 pack.
You should start by getting some experience building V6 OS loads (Mini-Unix
will be _very_ similar); use a simulator. I have a lengthy tutorial here:
http://www.chiappa.net/~jnc/tech/V6Unix.html
It's in terms of Ersatz-11, which I prefer because it has that nice DOS device,
which makes it easy to get files into the Unix (so I can use my normal editor on
the host machine). However, I gather most people prefer SIMH; there is a tutorial
here:
https://gunkies.org/wiki/Running_Unix_v6_in_SIMH
(I didn't write it; I know nothing of SIMH) for that option.
How do people using SIMH get files into a Unix running on one? Larry Allen
just wrote a PDP-11 simulator in Rust, and he's thinking about adding a
paper-tape reader (connectable to a file), so that if he installs the stock
V6 PTR driver, he can just do 'cat /dev/ptr > myfile'; sort of like how
VM/370 used the virtual card reader.
Noel
next reply other threads:[~2020-09-24 13:04 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-24 13:04 Noel Chiappa [this message]
2020-09-24 18:24 ` John Cowan
-- strict thread matches above, loose matches on Subject: below --
2021-02-03 1:25 Noel Chiappa
2020-10-18 21:36 Norman Wilson
2020-10-12 22:43 Noel Chiappa
2020-10-12 19:27 Noel Chiappa
2020-10-10 23:29 Noel Chiappa
2020-10-11 2:30 ` Jay Logue
2020-10-11 23:24 ` Paul Riley
2020-10-12 0:53 ` Dave Horsfall
2020-10-12 1:56 ` Warner Losh
2020-10-12 2:09 ` Andrew Warkentin
2020-10-12 16:57 ` Arthur Krewat
2020-10-18 20:42 ` Michael Huff
2020-10-08 23:49 Noel Chiappa
2020-10-08 16:06 Noel Chiappa
2020-10-06 23:08 Noel Chiappa
2020-10-07 5:24 ` Jay Logue
2020-10-06 20:34 Noel Chiappa
2020-10-06 19:34 Noel Chiappa
2020-10-06 19:04 Noel Chiappa
2020-10-06 14:46 Noel Chiappa
2020-10-06 16:22 ` jay-tuhs9915
2020-10-02 0:39 Noel Chiappa
2020-10-01 12:51 Noel Chiappa
2020-10-02 0:23 ` Paul Riley
2020-09-30 23:16 Noel Chiappa
2020-09-30 18:51 Noel Chiappa
2020-09-30 17:58 Noel Chiappa
2020-09-28 23:21 Noel Chiappa
2020-09-30 1:50 ` Paul Riley
2020-09-27 21:07 Noel Chiappa
2020-09-27 21:12 ` Warner Losh
2020-09-28 0:22 ` Pete Turnbull
2020-09-27 20:50 Noel Chiappa
2020-09-29 13:20 ` Paul Riley
2020-09-25 22:08 Noel Chiappa
2020-09-26 14:52 ` John Foust
2020-09-28 0:03 ` Paul Riley
2020-09-28 0:06 ` Paul Riley
2020-09-24 18:56 Noel Chiappa
2020-09-24 11:02 Paul Ruizendaal
2021-02-03 0:12 ` Greg A. Woods
2020-09-24 1:28 Noel Chiappa
2020-09-23 23:14 Noel Chiappa
2020-09-24 1:09 ` John Foust
2020-09-22 21:51 John Foust
2020-09-22 21:36 Noel Chiappa
2020-09-22 21:46 ` Warner Losh
2020-09-22 21:49 ` John Foust
2020-09-22 15:59 Noel Chiappa
2021-02-03 0:07 ` Greg A. Woods
2020-09-22 0:47 Noel Chiappa
2020-09-21 19:37 Noel Chiappa
2020-09-21 23:16 ` devin davison
2020-09-21 18:13 Noel Chiappa
2020-09-21 17:59 Noel Chiappa
2020-09-21 18:18 ` Arthur Krewat
2020-09-20 13:12 Noel Chiappa
2020-09-19 15:28 Noel Chiappa
2020-09-21 10:26 ` Paul Riley
2021-01-24 16:07 ` Tom Ivar Helbekkmo via TUHS
2021-01-25 4:58 ` Gregg Levine
2021-01-25 8:21 ` Tom Ivar Helbekkmo via TUHS
[not found] <CAD05_j1bc6DDRtfPkd4QVeWXjwSp73bty46D=2ATozUbHThBWw@mail.gmail.com>
2020-09-19 3:22 ` Paul Riley
2020-09-19 14:20 ` Heinz Lycklama
2020-09-21 13:54 ` Paul Riley
2020-09-21 15:30 ` Heinz Lycklama
2020-09-21 23:27 ` Henry Bent
[not found] ` <4C35E6D2-8ABD-4DC2-BB2F-F15FA5BF30DD@icloud.com>
2020-09-22 0:22 ` Henry Bent
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