Don't know if this is "classic" enough, but it might interest some people...
https://www.riscosopen.org/news/articles/2012/10/26/risc-os-pi-released-ris…
There is a final, complete, stable version of Acorn's classic
Archimedes OS now for the Raspberry Pi, making the RPi the cheapest
Acorn-compatible there's ever been by a long way.
It's based on ROOL's RISC OS 5.19, the latest version of the
shared-source fork of RO, based off Pace's version. (That's Pace the
satellite-TV/set-top-box/modem company.)
RISC OS Ltd is still developing its closed proprietary version based
off Acorn's unfinished betas of what was to become RISC OS 4 and still
claims that Pace/Castle's version is unauthorised and not legitimately
licenced. However, nobody much cares any more. ROL hasn't released a
new version in several years and doesn't support modern and recent ARM
hardware such as the Iyonix, BeagleBoard, PandaBoard and now
Raspberry Pi - it basically just sells (quite expensive) updates of
RISC OS 4 for classic Acorn hardware and directly hardware-compatible
machines. It rebadged the latest update after 4.39 "RISC OS SIX" just
to leapfrog Pace and ROOL's developments of RISC OS 5.
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At 07:34 PM 10/27/2012, Rich Alderson wrote:
>I first obtained a 5th-or-worse generation xerographic copy (highly
>reduced, multiple pages) of it in 1977, when ADVENT infected the
>UChicago DEC-20. I later saw a D- or E-sized single sheet rendering
>hanging in Ralph Gorin's office in CERAS at LOTS (later outside his
>office in Tresidder).
If legible, such plots could be reconstructed by tracing in
Adobe Illustrator. Contemporary sign-makers have tools that
can load the Illustrator "legacy" EPS format and convert it
to formats used by plotters and vinyl cutters.
- John
Looking for a Mac mini-DIN serial to DataRover serial cable, as mine has
disappeared in the move, apparently. Please contact me off list.
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------------------------------------ personal: http://www.cameronkaiser.com/ --
Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com
-- Either he's dead, or my watch has stopped. -- Groucho Marx -----------------
Holm writes:
>Scott Quinn wrote:
>
>
>> The license comes from the VMS Hobbyist Program. It's good for any version of
>VMS, from 0.whateveryoucanfind to 8.4.
>> Even though early versions of VMS do not enforce licensing through the LMF,
>it's still required.
>>
>> Media can be borrowed. HP doesn't care where you get it, but asks that it not
>be posted for public download.
>
>Hmmm...
>
>I do habe an hobbyist license for my 4000/90, got an VMS Isntall CD (don't
>know the version currently) borrowed from a friend.
>So what is the correct way to get an install media for wathever Version?
>
>Regards,
>
>Holm
>
>--
If you're looking for VAX version 7.3 (last VAX version), the HP guy you received your license e-mail from can set you up
with an official HP download link for VMS+layered products (not a full ConDist, but a selection).
For any earlier version ask around (also give location). HP has said in the past that they have no problems with hobbyists
borrowing media, but they continually reiterate that they would not like to have it posted for public download. There are probably
people on here who have it (I have 5.5-something, 7.2 and 7.3) , or you can ask on the OpenVMS Hobbyist fora.
Message: 5
Date: Thu, 25 Oct 2012 08:17:50 -0400
From: Rick Murphy <rick at rickmurphy.net>
To: <cctech at classiccmp.org>
Subject: Re: Microvax II won't boot, hardware error?
Message-ID: <201210251217.q9PCHosl030262 at rickmurphy.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 06:39 PM 10/24/2012, Kevin Reynolds wrote:
> >.... A crash example is below:
> >
> >
> >**** FATAL BUG CHECK, VERSION = V5.2 MACHINECHK, Machine check
> >while in kernel mode
> >...
> > KERNEL/INTERRUPT/BOOT STACK
> >
> > 803AF1E8 0000000C
> > 803AF1EC 00000082
> > 803AF1F0 7FF38058
> > 803AF1F4 02000002
> > 803AF1F8 00001534
> > 803AF1FC 03C00001
>
Here's what that machine check stack frame means:
803AF1E8 0000000C 12 bytes of parameters
803AF1EC 00000082 Machine check code = Write bus
error, virtual address
803AF1F0 7FF38058 Virtual address
803AF1F4 02000002 Internal CPU state.
803AF1F8 00001534 PC
803AF1FC 03C00001 PSL
It seems that you are getting hard memory write faults on the stack.
Maybe something is hanging up the Q-bus, or you have failing memory. If
you have diagnostics, running a memory test for a while may get you
somewhere. Otherwise, I'd look into trying to pinpoint the problem by
removing memory modules and see if the system becomes more stable
(assuming you have multiple memory cards, of course).
-Rick
Memory is NOT on the Q-bus, it has it's own dedicated bus on
the C-D connector rows (how many slots are memory only in the
CD rows depends on the specific backplane.) Possibly you
might have a Q-bus board in a memory-only slot, that is certainly
something to check. Otherwise, you may have a bad memory card,
a bad or dirty slot, or possibly a bad CPU board.
Hmm, I've never seen this error, but I think if a peripheral
board is bad, it does not cause a machine check, but maybe I've
never had the specific error. Can you tell what the physical
address was? or, at this point, might virtual=physical?
If so, is 7FF3xxxx in the Q-bus I/O space?
Jon
Hi,
Today I have finished documenting the Rxxx "flipchip" modules in my possession.
These are the modules from which most straight-8 and PDP-8/S gear was
constructed:
http://www.so-much-stuff.com/pdp8/flipchip/flipchip.phphttp://www.so-much-stuff.com/pdp8/flipchip/Rxxx.htm
The Rxxx modules are a smallish subset of the larger DEC modules space:
http://www.so-much-stuff.com/pdp8/flipchip/modules.htm
Unfortunately, there are several Rxxx modules for which I have neither example
or picture:
Module Versions Description
R211 K* L* MB, PC, MA, (PDP8)
R212 A* J* MQ (PDP8), 2 FFs, SR, SL, Read-in, Clear
R220 F* L* 3-Bit SR, Parallel Read-in, Diodes out for detecting all 0s in
R111 node
R284 A* Quadraflop, PDP8, 4 stable states
R450 D* E* Clock for use with TTY, first pulse comes 1/2 period late
R451 E* Teletype Clock, for faster teletype think R450
R601 B* F* H* Pulse Amplifier, 6 DCD Gates, 100 or 400 ns pulses
R613 B* R603 that cannot be triggered from output, with 5 mA loads
R650 E* Bus Driver, 2 circuits, 2 Inputs & Node
(* just means I don't have a board drawing for it yet)
There are also some more exotic modules for which I lack even a schematic:
R012, R1110, R1130, R152, R200, R406, R407, R408, R623
and I don't expect to be able to locate or do much about those.
Anyway, what I'm looking for is some help with the former list. If anyone has
examples of these, would it be possible to photograph the component and
solder sides with decent resolution and forward the photos to me? (You
are welcome to forward the whole module, but I don't expect that :-).)
The version information just refers to versions that I have schematics for.
Any version you have is fine.
I am particularly interested in the R2xx, as those are key modules for the
straight-8.
Thanks in advance for any help anyone can provide. (Meanwhile, I'll start
drawing Sxxx modules.)
Vince
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Does anyone have the data set used to generate a colossal cave map like
this one? It would make a nice demo for my plotter. The site owner doesn't.
http://aquaporin4.com/