While fantasizing having a PDP-11 of my own, I was reading about TRIPOS
and decided that would be fun to play with. This line from the TRIPOS
wikipedia article caught my attention:
The most important TRIPOS concepts have been the non-memory-management
approach (meaning no checks are performed to stop programs from using
unallocated memory)
Does this mean that any process is allowed to scribble anywhere in memory
without provoking a segfault?
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
>Date: Sun, 22 Jun 2008 19:51:17 -0700 (PDT)
>From: Cameron Kaiser <spectre at floodgap.com>
>> The Daystar SE/30 adapter has a Programmable Logic Device on board
>> which massages the connections. The PowerCache will not work
>> plugged in directly.
>
>Wouldn't a IIsi adaptor work? IIRC the SE/30 PDS slot and IIsi PDS slot
>are electrically compatible (but don't take my word for it).
Hi Cameron. Good to see you around.
Yes, the IIsi adapter will work, except, it will point it's expansion
slot horizontally where there isn't room for a card. So one needs
to use an extra Euro-Din connector of the right-angle type to adapt
it to vertical. No soldering is required, as the pins of the
connector will fit nicely in the IIsi adapter's connector's holes.
This is explained in clearer detail on Gamba's site.
Jeff Walther
>> I was recently contacted by a software developer that had an old Sage IV
>> computer that needed a new home. He found me through my Sage and Stride
>> website (http://www.sageandstride.org). He used the Sage IV in the 1980's
>> as part of an Amiga Development System.
>
>Was it like this unit?
>
> http://www.floodgap.com/retrobits/ckb/secret/cbm-rlorr-agony.jpg
> http://www.floodgap.com/retrobits/ckb/secret/cbm-rlorr-agony2.jpg
>
Yes, it's the same Sage IV model. I'm familiar with 'Agony'. I met Dale Luck last year and he let me get my grubby hands on Agony to help revive it (still ongoing...). I've added pictures of the Sage IV I just received to the group of photos of the Amiga Development System at:
http://entertainment.webshots.com/album/563890692JxMvHh
The Sage IV pictures are the last in the batch.
>This is the one Dale Luck exhibited and was christened, in typical Amiga
>humor, as "Agony." The rest of the developer prototype photos I have are
>on
>
> http://www.floodgap.com/retrobits/ckb/secret/lorraine.html
>
>They look slightly different than yours, which seems to be a later version?
>
>> From the docs and what I've learned by talking to other early Amiga
>> developers, the Sage IV was used in developing a lot of the early Amiga
>> code.
>
>This is also my understanding.
>
>--
>------------------------------------ personal: http://www.cameronkaiser.com/
>--
> Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com
>-- Whenever people agree with me I always feel I must be wrong. -- Oscar
>Wilde
Do you have any of the Amp plugs left?
Todd A. Given
Engineering Manager-Assembly Operations
Whitney Blake Company
Tel: (802) 463-1120
Fax: (802) 463-1111
given_todd at wblake.com
This is on-topic, I swear, as I'll demonstrate in a moment.
But first, if you haven't yet heard, George Carlin died yesterday. For
those outside of the US not familiar with his work, Carlin was an
iconoclastic icon, and I use those terms explicitly literally in this
case.
The world will truly bu a suckier place without him.
Today on Fresh Air (NPR talk program) Terry Gross ran old interviews with
Carlin. In a 2004 interview (which I must've missed) he mentions that he
enlisted in the military (he explains he did this to avoid the draft, i.e.
the idea was he would get to choose what he wanted to do) and ended up in
electronics and computers, and he specifically mentioned that he worked on
analog computers.
So besides being awesome, George Carlin was a hacker!
LONG LIVE GEORGE!!
Shit, piss, fuck, cunt, cocksucker, motherfucker, and tits!!
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
At 12:00 -0500 6/22/08, Cameron Kaiser wrote:
>Clearly his internal drives were hard.
...but warped, to the point of possibly causing a head crash.
<smack> I did *not* just write that...
--
- Mark 210-379-4635
-----------------------------------------------------------------------
Large Asteroids headed toward planets
inhabited by beings that don't have
technology adequate to stop them:
Think of it as Evolution in Fast-Forward.
> Date: Mon, 23 Jun 2008 07:36:33 -0700
> From: Lyle Bickley
> If you're interested in vintage Sun gear - and it's not available in your
> area - you might want to join the "Suns at Home" list. It's a low volume
> list which keeps "on topic":
The only vintage Sun gear that I own are a couple of coffee mugs and
a couple of oddball (e.g. "The Last Bug") T-shirts. That's enough
for me--at least both are still state-of-the-art in terms of utility.
Cheers,
Chuck
I need Mac OS 6.0.4 in a format that can be downloaded with a PC (under
WinXP), then moved to a disk that will boot on a Mac (IIci).
Can someone help? If so, please contact me directly.
Thanks!
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
> Realistically "common as dirt" doesn't sound very accurate to me. I've only
> ever seen one Sun 3 system, and that was one being used by the Navy back in
> '92. This might be something like someone from near one of the old DEC
> sites saying PDT-11's (note I said PDT, not PDP) are common as dirt.
>
> Remember commonality can be location based.
Yes, in some parts of the country, Sun-3s of all flavors were
extremely common. I just saw one at the MIT Flea last week.
They are drying up now, but still easy to find with some legwork.
Maybe "common as galena".
--
Will
>Date: Sun, 22 Jun 2008 01:19:33 -0700
>From: Josh Dersch <derschjo at msu.edu>
>Subject: Daystar Universal PowerCache & SE/30...
>To: cctalk at classiccmp.org
>Message-ID: <485E0B15.1080706 at msu.edu>
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>Scored a nice find for 50 cents today, a 50Mhz 68030 Daystar "Universal
>PowerCache" accelerator card. From my research on the web this should
>be SE/30 compatible, but requires some manner of a PDS adapter which is
>essentially impossible to find.
>
>The card won't physically fit in the SE/30 due to the metal chassis
>getting in the way -- anyone know if this is the only reason the adapter
>is needed, or are there electrical differences as well? As my SE/30 is
>kind of a mongrel anyway I wouldn't mind hacking up the chassis a bit to
>allow the card to fit, but if the adapter is actually necessary I won't
>bother...
The Daystar SE/30 adapter has a Programmable Logic Device on board
which massages the connections. The PowerCache will not work
plugged in directly. However, the connector will physically fit,
so there's some good opportunity there for electrical drama if you
manage to plug it in without the adapter.
The PowerCache only works in the IIci, IIvx and IIvi (and
corresponding Performa models) without an adapter. The same is
true for the 68040 based Turbo040.
There is a large amount of discussion on this topic at 68kmla.net.
Also at applefritter.com, but less active. And searching in Google
on Gamba and SE/30 will turn up a very useful page of information.
There is a fellow in Japan who apparently reverse engineered the PLD
and designed and built (or caused to be designed and built) his own
adapter design. However, he charges $200 for his adapter. Given
the costs and risks involved (he probably has ~$10,000 sunk in the
project) it is a reasonable price to charge, but most folks do not
think it is a reasonable price to pay. I think Artmix and
Twinspark would be good search terms to turn that up.
Jeff Walther
> -----Original Message-----
> From: Andrew Lynch [mailto:lynchaj at yahoo.com]
> Sent: Friday, June 13, 2008 6:58 PM
> To: 'cctalk at classiccmp.org'
> Subject: CP/M Z80 home brew computer circuit board
>
> Hi,
>
> If anyone would like to make their own low cost home brew Z80 CP/M
> computer please contact me by email.
>
> I have manufactured PCBs available for sale for $20 each plus shipping.
> Preprogrammed EPROMs are also available for sale.
>
> The hardware and software are documented including schematics, source
> code, binary images, PCB layout, parts list, etc.
>
> Details of the single board computer are available at:
>
> http://groups.google.com/group/n8vem
>
> Thanks!
>
> Andrew Lynch
[AJL>]
Hi All,
Just in case anyone is still interested in building their own Z80 CP/M home
brew SBC here is your opportunity. I have sold most of the PCBs in the
first batch. As of this morning, I have less than 25% of remaining stock.
I recommend that if you are going to order one of these PCBs then you should
do it soon. I do not know if or when there will be another batch. If there
is, it takes three weeks from my order to delivery and delivery to you is on
top of that.
Most likely, the demand for home brew / classic computer PCBs is fairly
limited to a small group of enthusiasts. Ordering more PCBs at a practical
unit cost is a delicate issue since I would like to get them out for people
but also want to limit my personal expenses on this to a reasonable level.
I do not expect to fully break even on the project but at least not lose my
shirt on it either.
Probably it means the next batch will involve a waiting list until there are
enough people signed up to make the order practical. If anyone has better
suggestions on how to do an amateur electronics project or a better idea, I
am open to *constructive* input. I do appreciate your helpful comments.
Please do not reply with "I don't like your project because..." Those
comments aren't very helpful and IMO generally just contribute to the noise
on CCTALK.
Thank you in advance and have a nice day!
Andrew Lynch
I received a box a while back containing an INFOREX Core Memory Controller
>from late 1970 / early 1971 and a DATARAM core memory cartridge / daughter
card. The DATARAM core is 4K I believe, but I did not open it to check.
The box also contained a document (not the product docs) ranging from
1971-1978 about this type of 4K and 8K core memory, and some interesting
pages about installing and using core memory with an S-100 data bus. It
looks like the original owner was trying to figure out how to use this card.
I assume that this particular DATARAM core memory could be used in both the
pictured below DEC-like controller and a homebrew S-100 controller, but it
was originally built for systems in the late 60's early 70's before the
S-100 bus, etc... Given the condition of the card and memory, it's very
possible that these components work. Now I just need a computer to put them
in...hmmm.
I have a basic idea of what the A, B and C card connectors do from some
notes included with the board on a scrap of paper (assuming they're
correct). For example pin 22 of connector A is a master reset, 25 is read
enable, 26 is write enable. B 9 is a strobe and 13-19 are data in,
etc. Let me know what info I can provide. I am not an engineer however.
Pictures:
http://www.vintagecomputer.net/inforex/
Can anyone shed light on the history/use of this?
Thanks.
Bill
On 21 Jun, 2008, at 08:52, cctalk-request at classiccmp.org wrote:
>
> Message: 33
> Date: Fri, 20 Jun 2008 22:12:04 +0100
> From: "John & Rachel" <john.haigh at zoo.co.uk>
> Subject: Listing paper FTGH (Yorks, UK)
> To: <cctech at classiccmp.org>
> Message-ID: <000501c8d31a$4fa20dd0$4401a8c0 at JOHN>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Must be a common problem getting rid of spare paper. Did you get
> any takers as I have some too. Anyone who was disapointed?
Hi,
Not disappointed, but Yorkshire is just too far away and paper is
heavy so shipping is too expensive. If anyone in the Kent/Sussex/
Essex area has any cheap listing paper at least 13" wide (for a 120
column drum line printer) I would be interested. I am also interested
in punched card drawers, paper tape cabinets, one more paper tape
winder, an engineer who can repair IBM keypunches, 4mm patch cables
for IBM patch panels (they have ball bearings in the plugs), an IBM
keypunch control drum, data plugs or cables for connecting to IBM
keypunches and Flexowriters. Any documentation or other items related
to the ICT 1300 series, especially the mysterious 1302 would be a
real gem to find. I have quantities of blank paper tape and blank
punched cards if anyone needs them, though I am always on the look
out for more in different colours so I can easily recognise programs
at a distance.
Roger Holmes
Anyone out there use a composite->VGA upscaler for their classic
computing and/or gaming needs?
I've been looking to shave a bit of space off my workbench and just use
a single SVGA monitor instead of that and an old composite monitor. I
picked up one of these: http://www.amazon.com/gp/product/B000XXZQWQ and
while it works great for certain systems (the C64 and NES, for example)
it gets really confused by the composite signal coming from other
systems (like the Apple II and Sega Genesis) and is unusable with them.
Anyone have any recommendations?
Thanks,
Josh
Scored a nice find for 50 cents today, a 50Mhz 68030 Daystar "Universal
PowerCache" accelerator card. From my research on the web this should
be SE/30 compatible, but requires some manner of a PDS adapter which is
essentially impossible to find.
The card won't physically fit in the SE/30 due to the metal chassis
getting in the way -- anyone know if this is the only reason the adapter
is needed, or are there electrical differences as well? As my SE/30 is
kind of a mongrel anyway I wouldn't mind hacking up the chassis a bit to
allow the card to fit, but if the adapter is actually necessary I won't
bother...
Thanks,
Josh
http://news.bbc.co.uk/1/hi/technology/7465115.stm
One tonne 'Baby' marks its birth
By Jonathan Fildes
Science and technology reporter, BBC News
Baby project team
The four remaining members of the Baby team will be honoured in Manchester
Sixty years ago the "modern computer" was born in a lab in Manchester.
The Small Scale Experimental Machine, or "Baby", was the first to
contain memory which could store a program.
The room-sized computer's ability to carry out different tasks - without
having to be rebuilt - has led some to describe it as the "first modern
PC".
<snip>
http://www.ted.com/index.php/talks/view/id/278
Historian George Dyson tells stories from the birth of the modern
computer -- from its 16th-century origins to the hilarious notebooks of
some early computer engineers.
------------------------------------------------------------
This is not my system, please email Martha if interested.
------------------------------------------------------------
From: Martha Shaw <mshaw at columbusschoolforgirls.org>
Subject: RE: selling a Wang Wordprocessor
Date: Wednesday, June 18, 2008, 3:45 PM
I have a Wang word processor from the 1980's. I would
like to sell it or donate it (take a deduction) if I can.
It's called the Wang Professional Computer in it's
manual which is copyrighted 1985. This one was
used for training when the person who owned it worked at
home and trained others when she worked for Wang. It works
and has a printer, as well as 10 printer wheels and 11
ribbons.
Martha Shaw
------------------------------------------------------------
This is not my system, please email Martha if interested.
------------------------------------------------------------
> Date: Fri, 20 Jun 2008 20:45:45 -0700
> From: jim s
> not impossible it's off a 1620. have you searched photos of it?
Not a 1620--the system used a much wider row of switches and
indicators. Not a 1401 or 7090 match either, from my memory, but
could be a 704 power switch assembly.
Cheers,
Chuck
> apparently 6800 based. O woe is me. 322$ + 90$
~$400 isn't 'big bucks'
The days of getting this stuff cheap are LONG gone.
The original 4051 used a 6800,
4052s simulate a 6800 with 2901s
and are MUCH faster.
'posthuman' buys up a lot, along with 'futuresources'
and 'wehavedealt', I wonder who they are?
Would someone have a datasheet for the AMD9511 ?
This is a FPU coprocessor from '79
=Dan
--
[ "go get 'em" ]
[ Pittsburgh --- http://www2.applegate.org/~ragooman/ ]
>
>Subject: Re: NEC D7220AD datasheet wanted
> From: "Seth Morabito" <sethm at loomcom.com>
> Date: Fri, 20 Jun 2008 10:26:59 -0700
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
> Cc: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
>
>On Fri, Jun 20, 2008 at 7:14 AM, maurice smulders
><maurice.smulders at gmail.com> wrote:
>> Make sure you google for uPD7220 (that's the NEC prefix)
>>
>> Maurice
>>
>
>That was my mistake -- I kept searching for NEC 7220 and NEC D7220,
>without the 'uC'. Couldn't find anything.
Yes it would muck up the works. The part was uPD7220. I have a few
and likely apnotes and all as well.
Allison
>I have a copy of it now, thanks!
>
>-Seth