Doug Jackson - pesonal email <doug at stillhq.com> wrote:
> Hi Everybody
>
> I was reading some doco last night (specifically the DEC RL11/01 Disk
> Subsystem Training Handout), and I am confused.
>
> (That is nothing new...)
>
> In the "Subsystem commands section", the addresses specified for DAR and
> CSR are 774404, and 774400 respectively, but in the back of the
> document, under the 'toggle in programs' section, the DAR and CSR are
> shown as being at 174404 and 174400 respectively.
>
> Hmmm. I see three possibilities:
>
> 1. I have (re) discovered a documentation error - I wonder if DEC, no,
> HP, no Compaq, would be happy for me to submit an amendment :-)
>
> 2. The hardware throws away the upper bits so both references are
> correct. Hmmm Possibly not :-)
>
> 3. There is some other stuff happening that I missed...
>
> If anybody could shed some light on this I would appreciate it. The
> background to the problem is that I can not convince my shiny,
> wonderful, (and noisy) DL01 to perform the seek test - Me thinks there
> is a problem....
People have already convered most of this, and essentially got all the
details down.
I'll just make a few comments, which relates to several answers. And
maybe clarify things in a bit more technical detail.
The PDP-11 CPU is a 16-bit machine, so all code will always just deal
with 16-bit values.
The PDP-11 can have different buses, with different behaviours, but
basically we can divide them into three groups.
16-bit bus
18-bit bus
22-bit bus
Machines with a simple 16-bit bus is almost nonexistant, but there was
some early Q-bus CPUs with a pure 16-bit address range, I seem to remember.
18-bit means all Unibus machines, as well as some Q-bus machines.
22-bit means most Q-bus machines.
When the PDP-11 sits on anything but a 16-bit bus, it must use tricks to
somehow actually utilize the extra address bits. This is done at several
places, and in several ways.
The most important component here is the MMU. When you enable the MMU,
you can select wether you want 18-bit or 22-bit addressing (assuming you
have a 22-bit capable machine).
With MMU turned off, addresses are directly physical. The MMU will
simply just extend the physical address 160000-177777 to 760000-777777
if we have an 18-bit bus, and 17760000-17777777 of we have a 22-bit bus.
If you enable the MMU in 18-bit mode, the MMU will start using the APR
registers to relocate your addressing. All your addresses in the PDP-11
will be virtual addresses, which combined with the APR values will form
physical addresses. If this is on a 22-bit capable machine, the MMU will
now detect if you are addressing physical 760000-777777, and extend
those addresses to physical 17760000-17777777, same as when you play in
16-bit mode, except for which physical addresses it remaps.
In 22-bit mode, the MMU will use your virtual address in combination
with the APR value to create a physical 22-bit address, and be happy.
So, to answer another persons comment. A 11/70 can be run in either
18-bit addressing or 22-bit addressing. Also, since a Unibus is always
18-bit, any Unibus device will work fine in an 11/70, even though it has
22-bit addressing (the same is true of the 11/44, 11/24, 11/84 and
11/94, by the way).
If the 11/70 is run in 18-bit mode, DMA from Unibus will directly
address memory and everything will be just fine.
Now, the really tricky part is how to deal with DMA on a Unibus machine,
where devices doing DMA only can put out 18-bit addresses, while the MMU
is using 22-bit addressing. When 22-bit addressing is enabled, there are
two PDP-11 designs. From a normal users point of view, the difference is
irrelevant. For OS programmers, it do make a difference, however.
11/70: all DMA addressing will actually be directed to a 124KW area
addressed at 17000000-17760000. Notice how this is physically directly
before the I/O page. These addresses cannot hold any memory. Instead,
this area of memory is virtual, and subjected to a new remapping by the
Unibus Map, if enabled. This remapped address in turn, is always on the
memory bus. So the Unibus Map is only a mapping between
17000000-17760000 and the memory bus.
This also means that on an 11/70, you can access addresses in the I/O
page, on the memory bus, but you have to go through the Unibus Map. And
this is needed, if you want to access the CSRs of the memory boxes,
which don't sit on the Unibus at all.
Note that the Unibus Map don't have anything to do with the I/O page
addressing. That is done by the MMU as a part of forming the physical
address. The MMU will then forward the address to either the memory,
Unibus Map, or Unibus, depending on which physical address it is.
The Unibus will, however, always forward DMA transfers to the Unibus
map, which will convert it into a physical address, and always pass it
on to the memory bus. (As a parethesis the RH70 massbus controllers in
the 11/70 generate 22-bit addresses straight away, and sends them
directly to the memory bus.)
11/84 and 11/94: With the 11/84 and 11/94, DEC removed the concept that
the physical addresses 17000000-17760000 are remapped by the Unibus map.
Instead they placed the Unibus map between the Unibus and the CPU bus.
And all physical addresses on the CPU bus stay physical, and either
address memory, or the I/O page. When the access is to the I/O page, the
Unibus Map also relays the access back out on the Unibus, so both things
on the CPU bus and the Unibus can respond.
I haven't checked, but I believe that the 11/24 and 11/44 are a mix of
the two above. They reserve the memory area like the 11/70, but the
Unibus map works somewhat like the 11/84 and 11/94. But I/O page access
don't do through it, and I think that the memory CSRs are visible on the
Unibus instead. (Maybe this would be a third variation, but I'm a bit
uncertain at this point on exactly how they work.)
The only thing remaining are the pure 22-bit machines, which are most
Q-bus machines. They don't have a Unibus map. Instead all devices can
address the whole memory directly with DMA, and can run as is.
This is where the RLV11 and similar devices runs into a small problem.
These controllers are actually designed for 18-bit Q-bus machines. But
the only thing that happens is that the high address bits are left
cleared always when they do DMA, so they can do DMA just fine in 22-bit
machines, with the limitation that they can only do DMA to the low 128KW
of memory. That's why the bounce buffers are needed for these.
Johnny
Does anyone know the specs for the wall wart for one of these? I have seen 2 different ones, and would like some clarification.
I've seen 9V DC center positive and 12V DC center positive.
Thanks for any help,
Kelly
The other day, I noted that both the DTC 3280 and the UltraStor 14N
SCSI controllers have an option to add a 3rd floppy drive to the
common floppy cable. Essentially, they place the motor control on
pin 4 and drive select on pin 6 for the extra drive. It's not hard
to make up a cable (Ultrastor supplied one with their kits) and a
simple DOS driver provides access to the third diskette. I have a
couple of drivers, if anyone's interested.
But I wanted to use a Future Domain 1670 controller in this case. It
uses the same FDC (National DP8473), but doesn't bring the motor and
drive select out to the floppy connector. So, for 5 minutes of time,
and a couple of lengths of wire wrap wire and a hot soldering iron,
all one need do is strap pin 4 of the floppy connect to pin 1 of the
8473 and pin 6 of the floppy connector to pin 42 of the 8473.
Works great. Wish I would have thought of this trick when the
controller was new 15 years ago.
Cheers,
Chuck
Anyone have one of these ISA SCSI controllers out there with a
version 3.4 or 3.5 BIOS? I'm looking to upgrade the old BIOS on my
card and would appreciate a data snapshot of the ROM.
Thanks,
Chuck
This machine is not mine, which has been mine for a while. Somebody bought
it but left it in my basement for the last two years. I can't store it for
him any more, but his email stopped working and I can not find him. I sell
it with the price he bought it from me, in case that he comes to me for it
in the future.
You are expected to pick it up. Otherwise you must arrange shipment.
vax, 9000
Hi
I saw a message on the classic computer list in 2003 from Ethan saying
that he had a RB5X robot controller with a 8073 SC/MP controller on it.
The thread degenerated into a general car discussion from what I have
been able to determine.
Today, I received my INS8060 and INS8073 CPU chips from Unicorn - The
8060's are easy, I have been able to find tons of doco, and will be
producing a couple of SC/MP blinken lights and swiches systems (but not
with 2012 ram chips ;-) ) shortly - That's the easy bit.
I am very interested in the INS8073 (with Tiny Basic onboard), and have
so far come across a PDF of the 807x (8070/8072), as another spare time
consuming system - My questions are;
1) Has anybody got a reference implementation for the 8073 - I suspect
that it involves a 4Mhz xtal, and a RS232 line driver/receiver connected
to SA (as RXD) and F1 (as TXD) - that can be breadboarded easily, but
the real secret is what address will it be expecting the external 6164
ram to provide the 8k of massive storage...
2) Did anybody end up reverse engineering the RB5X board - in the words
of a somebody wiser than me -- "That'l do in a pinch"
3) Does anybody have the basic reference guide that indicates the
allowed word lists for this part?
Thanks,
Doug Jackson
Lots of people mention devices (of all types) that are in some state of
transfer (for sale, for a good home, need help in moving, etc.). While I
appreciate all of these informative descriptions, I am loathe to respond since
I don't know if I could be of any help due to distance.
I would like to recommend that those requesting assistance mention their
locale. We here in the USA have these nice devices called ZIP codes which are
quite helpful. In other parts of the world, similar postal codes exist, and
along with a country would indicate to the casual reader (like me) as to what
level of participation they could achieve.
Basically I don't have a need to respond to a request for assistance for moving
a large piece of equipment that is 3000 miles from my home.
Thanks.
____________________________________________________________________________________
OMG, Sweet deal for Yahoo! users/friends:Get A Month of Blockbuster Total Access, No Cost. W00t
http://tc.deals.yahoo.com/tc/blockbuster/text2.com
cctalk-request at classiccmp.org wrote:
> ------------------------------
>
> Message: 4
> Date: Sat, 29 Mar 2008 08:53:04 -0700 (PDT)
> From: Chris M <chrism3667 at yahoo.com>
> Subject: Re: Anyone got a NEC APC
> To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk at classiccmp.org>
> Message-ID: <492893.16798.qm at web65503.mail.ac4.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> I have 2.
> snipped Don't think my
> disks are worth a lot either, haven't managed to boot
> off any of them. This too is a bummer, because one of
> my units has a rare card along with a set of 5 1/4"
> drives (external) and the driver software is on one of
> them. Butler Flats Associates was the vendor.
>
> --- "Robert J. Stevens" <trebor72 at execpc.com> GOOD E-MAIL wrote:
>> got my NEC APC running
If you want to send me them [send your address to above E-Mail] and they
are 8" I can test them. Then I can send you a couple back if they Don't
boot to test your machine with or else Make Bootable copies of yours to
send back with your originals. If they boot on my Machines then you'll
know where the problem lies.
I've got both CP/M-86 and MS-Dos 2.0 that boot up both of my Machines.
Bob
I would like to part from
- a Compaq 286/SLT luggable
- an LA75 (Dec) printer
- an LA50 printer
- 4 x RL02 drives
- 2 x RL01 drives
- 2 x PDP11/24, but one is a mess
- 20 + RL02 disks
Wim
| > ECN: Engineering change notice. Indicates revision of PCB.| | Thanks, I
did not realise you had already translated it to English.| >| > The ODP-505
is a pure binary machine, not designed for arithmetics,| > statistical
purposes or BCD computations.It is a real time (!!!) | > computer.| > Get
some datas (voltages, frequencies, switch states, motor speed,| >
temperature...) compare to thresholds or values, and speed up / | > slow
down| > motor, or move a cadmium bar (?) in a nuclear reactor...| | I see.
The Elliott machines were the same (but not the ICT1301), | keeping the gun
of a tank level and aimed in the right direction, | accepting data from
gyros and inertial sensors and tracking the | position and orientation of
an aircraft or ship, cross checking with | compasses and other navigational
systems, analysing sonar data and | tracking enemy submarines etc. I think
we are right. I never worked with this machine, so i do expectations (with
my good knowlegde of micro-processing) | By the time of the 920ATC we even
used | a special real time programming language called Coral66, based on |
Algol60 syntax but with cut down semantics to give highly efficient | run
times. Before that everything was done in assembler (called | S.I.R.) or
machine code.I have no information about software. I don't know if they had
even an assembleror if they do the job with a pencil and a rubber. (as i
explain in my IBM 650 section)Have a look there:
http://pichotjm.free.fr/IBM650/fileUS.html| >> | The architecture of your
machine reminds me of the first machine I| >> | was allowed to operate. It
was an 18 bit binary machine, it had | >> 8k of| >> | memory built in,
expandable with external modules and was made | >> by the| >> | Airborne
Computing Division (ACD) of Elliotts, it was an Elliott | >> 920B| >> | and
was a compact, flyable version of the commercial Elliott 903.| >> | There
had been an earlier model 920A which I think would have been| >> | Germanium
and was roughly the size and shape of a carpenters work| >> | bench. This
may have been contemporary with your earlier machine I| >> | think.
Unfortunately I never saw one in the flesh, but there was a| >> | bench in
the computer room which I found out later, was the empty| >> | chassis of a
920A. Behind the bench was a large panel full of| >> | electrical 'chocolate
strip' connectors where the analogue and| >> | digital input and output
signals of the 920A could be connected up.| >> | Apparently some of the
analogue outputs had been connected up to an| >> | oscilloscope to provide a
visual display unit, though it used a | >> fair| >> | bit of processor time
to keep it refreshed, even with the long| >> | persistence phosphor of an
oscilloscope. The panel had been covered| >> | with board with pegs to hold
mylar paper tapes and until the day it| >> | was scrapped I had not seen
what was behind it.| | > Very interesting!There are some video connector in
the earlier | > machine and| > the Serel companywas specialized in high
tech video solutions.| | Possible application for computers in video back
then were | superimposing images and standards conversion and just possibly
| titling and graphics.You seem to have not browsed completly my website. I
show about 200 beautiful photos describing these kinds of applications. We
did superimposing images and standards conversion for ship, nuclear
plants,helicopters test, meteo ... have a look there
http://pichotjm.free.fr/Techno73/Techno73.htmlI have not translated the
pages (need time) but if you click on every linksyou will see these
beautiful pictures i have taken in the 'Le Bourget' aeronautic international
fair in 1973.I have no returns about these publishings, so i am not very
encoraged to translate them... If you want I will try to take time.I just
verify it's translated!
http://pichotjm.free.fr/Techno73/Techno73US.html(probably badly, but
sufficient) | > I have read| > somewhere in docs, thatthis computer have a
screen output...| | If it has two or preferably three digital to analogue
converters then | a vector display is fairly easy, but maybe it was more
complex than | that, and you only need one digital to analogue converter
for a | raster display, provided you have enough CPU power to both drive
the | display in real time and do any processing required as well.| | I
should explain what I said about two or three A/D converter, you | have one
to drive the X plate and one for the Y, ideally one for the | brightness
(Z), but with a fast enough converter, you can deflect the | beam so fast
so it will not mark the screen significantly and so no | need to turn the
beam off before moving to the next item to be | displayed.I have a picture
of the display terminal for the earlier one:
http://pichotjm.free.fr/Serel/Notices/Serel%20computer%20dept/img_3673.html…
following english page indicates 'Oscilloscopic characters display' | > I
have found,| > last week a small notice describing microprogramming on| >
ODP-505.http://pichotjm.free.fr/Serel/ODP505/MicroProgrammation/ | >
MicroProgrammation.html(doc| > found in photomultiplier doc!)I have found
commercial document | > describing| > displays and analog memories...I
don't know the date... (1970?) I | > have to| > study these documents...| |
I had a look but my understanding of French is terrible, and | technical
details in French are even more difficult.Do you know how I am tired after a
translation to publish in english? ...| >> I have a| >> earlier machine from
the same company SEREL, named OA-1001. Built in| >> 1959/1960.I need to
restore it. It lays on the floor (horizontal| >> position)... The blue one|
>> here:http://pichotjm.free.fr/Serel/Photos/Photos.htmlI will start| >>
restoring| >> next month (with the Sun!)| >| > | What is involved in the
restoration? Do you intend to make it work,| > | this would be very hard
without the schematics.| | | > As you know, i am alone,| > here. I want to
make an esthetic restoration:Photos and notes, | > dismantle,| > photos and
notes, wash, dry, fix the rust, protect with Rustol, | > photos an| >
reassemble. I hope to be capable to do that... may be one year, may be| >
two...| | As I understand it, that is what the big museums call
preservation. | There has been a lot of discussion of the relative merits
of | preservation and restoration. Restoration is what they call it when |
we return a computer to running condition, preferably so it can be |
demonstrated. There is some truth that restoring a computer always |
destroys some of the original and that preservation is, to the | purist, a
better thing to do. I know... but i can use a bad english word... It's why i
precised esthetic!| As I have two 1301s, I have the luxury | of being able
to restore one and preserve the other, but restoration | is a lot more
enjoyable to me.May be, but i know the time needed. And I have many projects
for the future.I don't used to watch back. I prefer future [i intend to live
in! ;-) ]I do a lot of program in television, compression, splitting, ECC,
FTP, transmission...(I have a son living in the USA, so he can watch french
TV in broadcast quality... chutt!)| The other thing of course is simulation.
This can be done at various | levels, simple simulation of the instruction
set, more complex | simulation at gate level and in theory the ultimate
would be to have | a 3D model of the computer you could walk around and
inspect the | inside of, and attach a virtual oscilloscope to and watch the
| analogue signal levels and be able to do hardware patches and have |
simulated hardware faults and diagnose and repair them whilst the | lights
and switches all worked like the real thing and the sounds and | 3D models
of the peripherals would also be like the real thing. Maybe | I'd leave out
the sound of a card deck being mangled and thrown into | the air by the
card reader though.Yes i know all these kinds of technics... and can do the
work (not 3D)It would probably be better to spend his time in creating a
special software to do reverse engineering, (and more exciting for me) with
a mixt of taking photos, and piloting schematics and routing
simultaneously...| >| > May be some reverse engineering to get 2 or 3
schematics. (need one | > week for| > a board! I have 2 boards in
process...)JM Pichot| | Good, Yes, but i have no courage to finish the
task...| are you able to identify the function of each type of board |
(such as 'And' gate, Flip-Flop etc)Probably, with the help of my lectures of
the sixties...| If not I could perhaps compare with my 1301 schematics and
see if | they have any similarities. How difficult is it to identify the
power | supply connections?For the small computer, i have to analyse
schematics (to be done!)For the earlier, cables are preserved and connected.
I have power supplies, so it is allways possible to trace wires... (not
really exciting!)| Are you planning on doing schematics for the board
interconnections? Not today! or this year. First i plan to preserve the
machine and publishphotos.| I imagine this would be very difficult, so
probably best not to try.There is no national interest, today, in France, to
preserve or studyold machines... It's a huge task. I can not do that...
alone.So i will wait (or my sons..) that French speak, make meetings,
makereports, ask for money... may be in 20 years. Museums are for paintings,
ceramics, statues...I have to be more positive!!!By the way, if you are not
still fed up, i spent last days in publishingan analysis about a display
terminal designed in 1969, which use 32 TV delay lines as memory! Have a
look there: http://pichotjm.free.fr/DisplayDL/DisplayDLus.htmlNote. I have
not a perfect english, so i can misuse words. I never intend to be
agressive, unpolite or to hurt any body. I wish you a good
evening.Jean-Marie PICHOT
Dwight wrote:
> I expect that someday, the supply will run dry. There are a few
> parts that are already getting hard to find. 74S38 are one of them.
> The ones that are really bad are the custom parts. The ROM chip
> for the KIM is a good example.
> I have a board that is waiting for a bus inteface chip. I watch
> but don't have a lot of hope.
One can still find UV-201 tubes/valves for sale. I expect to be
fertilizer by the time that the world's source of TTL runs dry. But
even now, SMT and programmable logic has progressed far enough that
some sort of accommodation can be made if one wants to mount
components on DIP-sized PCBs.
The problems that I see are with the very special-purpose chips
whose function and pinout aren't well understood. If you know what
should be in a ROM, for example, there should be no problem cobbling
something up that will work. The problem arises when you don't know
what the contents are--and the ROM goes bad.
Cheers,
Chuck
Hello people,
I am dumping my small collection. If anybody is interested and is able to
pick it up, you are welcome to get it. I do not ship or store. It was a
complete microvax 3800 (upgraded to 3900) but I took the KA655 to fix my
barebone 3900. You get the computer with RA7? DISK, DSSI disk controller,
memory, ethernet card, tape card and tape drive. Plug in a KA655 and it is
ready to go.
If nobody is willing to take it, I will take it apart and sell the
components to cover my time.
vax9000
I'm sure this has been hashed over 100 times, but I'm curious (and please
set me straight - or laugh!)
If I wanted to find 4-5 of the nice plastic "switch handles" used on the
front panel of a PDP-8/L, is there any hope of finding them?
I'm only missing about 5 (I think). I know someone was making them from
scratch, but is that the only way? Does anyone have a handful they's
like to sell? (I need to figure out which colors I need, I know)
go ahead, chuckle away, but i had to ask...
-brad
> --- Vaughan Karin Sage <vwsage at adam.com.au> wrote:
>
> Hi, I have an old NEC H03 APC III that has the
> inbuilt twin 8"floppies & colour screen. I have
> blown the High Tension transformer on the board to
> the left of the VDU. Wondering if anyone has parts
> for this old beastie. I used it to run EZCAM for
> 2axis CNC machining & would love to get it going
> again.
The APC was part of the NEC PC98 series of machines, which are fairly
compatible from the first (1980s) to the last (ca. 2000) members of
the series. Technically, a better platform than the IBM PC series
and marketed under varioius export model numbers, such as N5220. But
sill the venerable PC 9801 under the badge.
PC 98 was hugely popular in Japan, holding the majority of the market
for the 80s and much of the 1990s. A note to one of the Japanese
PC98 user groups should get you what you need.
Members of this family are still in use for various industrial uses;
lots of manufacturers, such as Mitubishi used them as controllers for
their iron (I see a LOT of Mitsubishi EDM disks here).
I'd expect to see a higher prevalence of PC 9801 series gear in Oz
than in the USA, for example, simply due to geographic proximity.
Failing rehabilitation of your old system, there are several decent
9801 emulators that run under Windoze that you might try to get your
software running.
Cheers,
Chuck
Hi, I just say your message from 2004 about cashtrac. ?I have been using this great program for over twenty years and I would love to make it work with XP but I have no idea how to do it. ?When you say 95 dos box, what do you mean? ?Is there some way I can make my xp program work like 95 dos?
If you have time to respond please do so to; Belray1 at aol.com and put cashtrac in the subject line so I do not spam your response.
Thanks,?
Gary Fetter
> Date: Fri, 28 Mar 2008 02:56:51 -0400
> From: "John Floren" <slawmaster at gmail.com>
> Subject: Re: Research Unix v9, v10
> To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk at classiccmp.org>
> Message-ID:
> <7d3530220803272356j78f3f724ne5f10c37d32cb587 at mail.gmail.com>
> I already have VMS on my Alpha and the VAX; if I can't get Research
> Unix on the VAX, I'll stay with VMS. The later additions to Research
> Unix evolved in some interesting directions which eventually led to
> Plan 9, the OS I develop for at work.
Are you also using Inferno and Limbo?
The last I knew, Rob Pike was still active with Plan 9.
Can't you ask him directly since any Plan 9 user
ought to be a "close personal friend of ..." :-)
Or is all that gone with the Alcatel merger?
I never got to touch Plan 9
http://en.wikipedia.org/wiki/Plan_9_from_Bell_Labs
It was ramping up just as AT&T IS was ramping down.
I adored the names of all the BAD movies and the mascot:
http://en.wikipedia.org/wiki/Glenda,_the_Plan_9_Bunny
Glenda is the mascot of the distributed operating system
Plan 9 from Bell Labs. It was drawn by Renee French ...
As Plan 9 is named after the Ed Wood film Plan 9 from Outer Space,
Glenda is named after Wood's film Glen or Glenda.
I was curious about the "Aleph" language but that was dropped long ago.
I agree for the need to better express parallelism in programming
instead of just inlines and libraries for threads.
> I'd love to find a Blit (AT&T/Teletype model 5620) terminal
> and a VAX capable of running v10; that was a brilliant system.
In the late 80s while working on Unix developement at
AT&T IS (information systems), the porting base for SVR4.0
was a 3b2/400 (desktop size) and the 5620.
But later terminals were better.
Citing
http://www.brouhaha.com/~eric/retrocomputing/att/5620/5620_faq.html
The successor to the 5620 was the 630 which came out 1987.
The processor changed back to the Motorola 68000
which the developers had wanted all along.
Most of the 630 monitors were amber,
although white and green monitors were also available.
The monitors had a non-interlaced 1024x1024 pixels
and did not have slow phosphors. A second RS232 port was included
with optional SSI (3270 connectivity) and 512K RAM cards.
In 1989 new firmware for the 630 came out
and the name was changed to the 730.
This firmware supported 3 RS232 ports, LAN cards, built-in 4014 emulator,
and enhanced PF-keys. Options to the 730 included the SSI card
(which added the 3rd RS-232 port), ISO and TCP LAN cards,
and an X-cartridge. The LAN cards supported from 512K to 4Meg of RAM.
In 1990, the 730+ came out with a faster 68000,
more EPROM space and RAM was moved from the LAN card to the main controller.
In 1991, ISDN connectivity was provided to AT&T Bell Labs.
Meanwhile, AT&T research came out with a totally new
motherboard controller card using the 630 monitor
with totally new software (Plan 9) and called it a GNOT.
It had a Motorola 68030 as the main processor.
What I'm trying to say is that the newer terminals ought to be
more desirable since they use parts that you can probably still get
and emulate. The 5620 was based on the AT&T WE32000 CPU,
which was fun to use at the time (the heart of the companion 3b2)
but I fear there's no support for it anymore.
A friend has a 5620 but not the games and toolkits
(since TOAD is gone: the AT&T toolchest of unsupported software).
The windowing software used the "layers" serial line protocol
which will also be hard to re-create.
Sigh: it was fun running programs that downloaded into the terminal
(cip: drawing program for PIC,
GEBACA: Get Back At Corporate America: a game where you shoot corporate logos,
the clock-of-all-nations with builtin printer driver and keyboard lock ...)
If you succeeded in crashing the 5620's monitor,
you got a mushroom shaped cloud with the panic message.
I still have some of the red dome 5620 bus-mice
because they were truly the most comfy mice ever made.
I suddenly have renewed interest in making a USB adapter for it.
I found the 5620 web page from:
http://fixunix.com/plan9/241581-9fans-blit-gnot-portrait-monitors.html
> John
> Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn
^^^^^^^^^ If u cn rd ths u cn gt a gd jb in hll ?
Hello All
As I said before my PDP-8/e partly failed insofar as it would
not load data into memory.
I rewound my personal memory back thirty plus years and did a lot of
relearning about how pre microprocessor systems worked.
Toggling the Add Load switch puts the address on the bus and triggers
the time state generator to cycle.
In the correct time slot the address is set in the memory ready for the
data.
Setting the Switch Register with the data and toggling the DEP key
should write data from the SR to the pre set memory location via the bus
in another time slot.
The time states are generated by a string of SN74194 shift registers and
the slot for the data is not being decoded. It looks like the '194 is at
fault.
Now I need either a couple of 74194's or an M8330 board.
Rod Smallwood
TheDECcollector
I was cleaning some bookshelves in my office and discovered a 3.5"
DS2D diskette with the diagnostic program GRIDSCAN (for early-ish
Grid laptops).
If anyone wants it, I've posted a self-extracting diskette image at:
http://www.sydex.com/temp/gridscan.exe
I'll leave it up for a week or so.
Thanks,
Chuck
Hi, I have an old NEC H03 APC III that has the inbuilt twin 8"floppies & colour screen. I have blown the High Tension transformer on the board to the left of the VDU. Wondering if anyone has parts for this old beastie. I used it to run EZCAM for 2axis CNC machining & would love to get it going again.
I got my NEC APC running and was able to create a floppy that boots with
Seattle Dos 2.0 on it. Most of the Programs seem to run. But if they
don't then I overlay them with the ones from my MS-DOS 2.0. Strangly
the dates on both Systems are really close; Late 1982 for the MS-DOS and
early 1983 for SCP-DOS
Got to figure out how to put a Boot for my CompuPro 816 on a floppy so I
can boot to Dos on the CompuPro
I may need a replacement 8" drive for one of my Two APC's
TIA
Bob in Wisconsin
Does anyone recognize this archive as a mirror of other spots?
http://maben.homeip.net:8217/static//S100/index.html
It seems to be connected to majzel.com, registered to a
Agata Majzel, Flat 22, 27 Hereford Road, London W2 4TQ.
- John
--
No virus found in this outgoing message.
Checked by AVG.
Version: 7.5.518 / Virus Database: 269.21.7/1327 - Release Date: 3/12/2008 1:27 PM
From: Jeff Jonas <jeffj at panix.com>
> > From: "John Floren" <slawmaster at gmail.com>
>
> > I already have VMS on my Alpha and the VAX; if I can't get Research
> > Unix on the VAX, I'll stay with VMS. The later additions to Research
> > Unix evolved in some interesting directions which eventually led to
> > Plan 9, the OS I develop for at work.
>
> Are you also using Inferno and Limbo?
> The last I knew, Rob Pike was still active with Plan 9.
> Can't you ask him directly since any Plan 9 user
> ought to be a "close personal friend of ..." :-)
> Or is all that gone with the Alcatel merger?
You might want to check out the 9fans mailing list.
There also one for inferno, though you'll see some
inferno discussion on 9fans too. You can get to
them at:
9fans-request at 9fans.net (used to be 9fans-request at cse.psu.edu)
inferno-list-request at vitanuova.com
As to the people, Rob, and some of the others, are
at Google now. They still frequent the list, but
aren't actively involved anymore. On the other hand,
there are several who are still involved as well as
a small, but strong community. And no, we're not
all close personal friends. In fact, I haven't even
met any of them. Before his retirement, Dennis was
on the list and he would probably have a pretty good
idea if any of the 8th-10th editions were still around.
At least in the fall, he still had his office at BellLabs
but I don't know if his email address there still works.
BLS
The following eBay seller has a few MMC Replay's and RR-Net's
available for the Commodore 64.
http://stores.ebay.com/Reds-Retro-Computing-Extravaganza
I've not dealt with this seller before, but I just finished ordering
mine from him, so should hopefully have it sometime next week. I'm
excited to get it, as the new MMC Replay (the MMC64 and Retro Replay
carts combined into one) allows mounting of D64 and D71 images. Not
quite as good of a solution as the 1541-III would be, since it won't
allow you to use a REU, but I don't own a REU anyway.
If you're like me and had wanted to get the MMC64 and Retro Replay,
but had never managed to get one, the MMC Replay looks to be a
pleasant surprise. It has new features, and is supposed to be more
compatible with the C64 and C128's.
More details and the manual can be found here.
http://www.vesalia.de/e_mmcreplay.htm
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| MONK::HEALYZH (DECnet) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
HI,
I see your posting from over a year ago. My dad has a Compugraphic Editwriter from 1978? that he wants to sell or a very nominal price. Do you have any idea where I can start looking for an interested party? Thanks Wendy