test-drb

test-drb@ccmp.vtda.org

101090 discussions

by bqt＠softjar.se

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

18 years

AC adapter for Dayna PORT SCSI/Link-T

by kelly＠catcorner.org

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

18 years

Adding a 3rd floppy to an old PC SCSI controller

by cclist＠sydex.com

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

18 years

Future Domain TMC 1670 BIOS

by cclist＠sydex.com

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

18 years

PDP11-04 available in Cleveland, Ohio, USA for $100

by vax9000＠gmail.com

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

18 years

Neat find (in my own junk bin!) - NS 8073

by doug＠stillhq.com

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

18 years

Caetron and Farallon

by steve＠radiorobots.com

Anyone have a pile of lit from either of these? Thanks, Steve

18 years

A simple request?

by tsw-cc＠johana.com

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

18 years

NEC APC cctalk Digest, Vol 55, Issue 49

by trebor72＠execpc.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

18 years

Need a good home (currently in Arnhem, Netherlands)

by hofmanwb＠versatel.nl

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

18 years

End of restoration of the early French computer SEREL ODP-505 (germanium CPU)

by pichotjm＠free.fr

| > 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

18 years

Looking for a M8330 or a couple of SN74194's

by cclist＠sydex.com

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

18 years

Free microvax 3800 available in Cleveland Ohio, USA

by vax9000＠gmail.com

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

18 years

pdp-8/l switch handles?

by brad＠heeltoe.com

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

18 years

NEC APC III

by cclist＠sydex.com

> --- 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

18 years

cashtrac.exe ???

by belray1＠aol.com

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

18 years

Plan 9, GNOT, 5620 terminals

by jeffj＠panix.com

> 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 ?

18 years

Looking for a M8330 or a couple of SN74194's

by RodSmallwood＠mail.ediconsulting.co.uk

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

18 years

GRIDSCAN

by cclist＠sydex.com

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

18 years

NEC H03 APC III

by vwsage＠adam.com.au

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.

18 years

Anyone got a NEC APC

by trebor72＠execpc.com

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

18 years

S100 archive?

by jfoust＠threedee.com

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

18 years

Plan 9, GNOT, 5620 terminals

by blstuart＠bellsouth.net

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

18 years

MMC Replay and RR-Net for C-64

by healyzh＠aracnet.com

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/ |

18 years

Anyone collect Compugraphic equipment?

by wendywally＠msn.com

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

18 years

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