PDP-8 clone built by Canadian company Consolidated Computer Inc

I am trying to locate documentation on the PDP-8 clone built by Canadian company Consolidated Computer Inc (Mers Kutt) in the mid 1970's. An example exists in the UK and will be restored when more data than just the system can be found. Rod Smallwood - digital equipment corporation 1975-1985

PDP-11/34 CPU PROMS

Hi Jerry Walker and I have an 11/34 under restoration. We have run into a bit of a problem. On the M8266 CPU control board a defective 7404 (E111) has killed a bunch of the PROMs holding the microcode. Does anybody have or can get images of the PROMs on this board so replacement de

Re: PDP-11/34 CPU PROMS

Hi  Thank you all for your kind and quick replies. I am sure somebody will come up with the actual images either the original files or derived from what we have. As the key to the function of the 11/34 CPU their addition to the body of informatio they will be of imense benefit to us all. R

Re: PDP-11/34 CPU PROMS

Hi     We have narrowed the problem down. Its the instruction decode ROM's that are the issue. The images of those are whats needed. Regards Rod On 09/02/2022 23:14, Sytse van Slooten via cctalk wrote: On Tue, Feb 8, 2022 at 7:04 PM Warner Losh wrote: I found https://deramp.com/downloads/m

Installing an operating system on an 11/83

Hi   I have built an 11/83 in a BA23 box.   It has a KDJ-11B, 2mB PMI memory, an RQDX3 with an RX50 attached, Plus a CMD CQD 220A Disk controller with a digital RH18A 2Gig SCSI drive attached. Diag sees drive as RA82. It boots and runs the diag disk and XXDP+ just fine. I do not have insta

Re: Installing an operating system on an 11/83

On 22/02/2022 02:35, Chris Zach via cctalk wrote:    It has a KDJ-11B, 2mB PMI memory, an RQDX3 with an RX50 attached, Plus a CMD CQD 220A Disk controller with a digital RH18A 2Gig SCSI drive attached. Hm, that's an interesting setup. If it has two MCSP controllers then one of them is at a

Re: Installing an operating system on an 11/83

On 22/02/2022 00:55, Glen Slick via cctalk wrote: On Mon, Feb 21, 2022, 4:32 PM Rod Smallwood via cctalk < cctalk@classiccmp.org> wrote: Hi I have built an 11/83 in a BA23 box. It has a KDJ-11B, 2mB PMI memory, an RQDX3 with an RX50 attached, Plus a CMD CQD 220A Disk cont

Re: Installing an operating system on an 11/83

On 22/02/2022 00:32, Rod Smallwood via cctalk wrote: Hi   I have built an 11/83 in a BA23 box.   It has a KDJ-11B, 2mB PMI memory, an RQDX3 with an RX50 attached, Plus a CMD CQD 220A Disk controller with a digital RH18A 2Gig SCSI drive attached. Diag sees drive as RA82. It boots and

Installing an operating system on the 11/83 - update.

Hi All   I did find some RX50 images of the MicroRSX distribution. So I fired up my DEC Celebris FX. It runs W95 and has a 3.5 inch floppy, a real RX33 5.25 inch drive and a CD-R.    Its accessible on my network so getting files onto it is not a problem.     So install putR.com , an

Re: cctalk Digest, Vol 89, Issue 21

I'm sure that will work. Unfortunatly dd is a linux command. I only have windows PC's. simH is highly complex and needs a lot of setup. ( I know - I tried - total nightmare) It does not have support for the CMD CDD 220 SCSI controller and a RH-18A I have a working 11/83 with a 2gig SCSI driv

Re: Installing an operating system on the 11/83 - update.

On 22/02/2022 16:20, Rod Smallwood via cctalk wrote: Hi All   I did find some RX50 images of the MicroRSX distribution. So I fired up my DEC Celebris FX. It runs W95 and has a 3.5 inch floppy, a real RX33 5.25 inch drive and a CD-R.    Its accessible on my network so getting

Re: cctalk Digest, Vol 89, Issue 21

On 22/02/2022 23:16, Glen Slick via cctalk wrote: On Tue, Feb 22, 2022 at 2:20 PM Rod Smallwood via cctalk wrote: I'm sure that will work. Unfortunatly dd is a linux command. I only have windows PC's. You never answered if you have a SCSI controller in your PC, or have the abil

11/83 operating system load update -2

Hi    Well I have had a huge response to my request. I am unsure as to if I have defined the problem properly. So a few bullet points. 1. The objective is to copy RX50 disk images (*.dsk format) to genuine DEC RX50 disks. 2. The PC I want to use is a DEC Celeibris FX ie the PC and its W95

11/83 OS load - problem solved.

Hi Well I now have a full set of DEC orignal MicroRSX RX50 distribution disks. An old friend who I worked with at DEC had kept his install go bag and there they where. Not only that they are good and do boot. Its not over, RT-11 would be a better fit so I'm looking at that. Rod

Re: 11/83 operating system load update -2

I already have a Linux system (Ubuntu v20) the problem is I have no hardware that would run Linux and has a floppy controller. However thats no longer a problem as I have obtained a full original MicroRSX distribution on RX50. But thats not the end of the story.  RT-11 is next R On 24/02/2

Re: 11/83 operating system load update -2

get 30mb MFM drives and run it off the RQDX3 C On 2/24/2022 5:13 AM, Rod Smallwood via cctalk wrote: I already have a Linux system (Ubuntu v20) the problem is I have no hardware that would run Linux and has a floppy controller. However thats no longer a problem as I have obtained a full

RQDX3/RD31/RX50 jumpers

Hi   Is the correct setting:    1. DS1 on the RD31 and the RX50's move up to DU1 and DU2.    2. DS3 on the RD31 and the RX50's are DU0 and DU1 I've tried both and it still  tries to access the RD31 and the RX50 at the same time. Its on a standrd BA23 R

Front Panels

Hi   I've just done an inventory and I have the following stock    PDP-8/e Type A  Qty 4     PDP-8/e Type  B Qty 5     PDP-8/f   Qty 4 PDP-8/i   Qty 8 New production may not be for a while. Rod Smallwood

pdp-8/i lamp board

Hi   I have a running stripboard prototype of a full size 8i lamp board to go with my 8i front panels. It uses the PiDP-8 software with Oscars agreement and encouragement.     There are no mods needed just plug in a Raspberry Pi running Oscars version of SimH and it runs. PCB

Re: If C is so evil why is it so successful?

On 12/04/2017 16:08, Norman Jaffe via cctalk wrote: Assembler is a sports car kit. From: "cctalk" To: "cctalk" Cc: j...@mercury.lcs.mit.edu Sent: Wednesday, April 12, 2017 7:57:07 AM Subject: Re: If C is so evil why is it so successful? From: Alfred M. Szmidt No even the following program:

Re: Remex Tape Reader - Pre-power up advice?

There are what appear to be 1976 date codes on some caps. If its that old then replace all and any electrolytic capacitors plus any paper based caps. If they aint bad now they soon will be. Rod Smallwood On 16/04/2017 22:45, Anders Nelson via cctalk wrote: Thanks for the tips, I think I'

Re: 8i front panel hmm

On 08/05/2017 21:37, Fred Cisin via cctalk wrote: On Mon, 8 May 2017, Adrian Stoness via cctalk wrote: so anyone thats recalls i found a crushed pdp 8i last yr So, anyone that recalls that I found a crushed PDP 8i last year, on friday i was back at the Sean and found the panel in paces actua

Re: BBS software for the PDP 11

On 18/05/2017 04:58, Zane Healy via cctalk wrote: On May 17, 2017, at 5:45 PM, devin davison via cctalk wrote: I have both a pdp 11/34 and 11/23 and am trying to find some bbs software to run. Preferably something that will run under an os and not monopolize the whole machine. Any suggestio

Re: BBS software for the PDP 11

On 18/05/2017 06:26, John Wilson via cctalk wrote: On Wed, May 17, 2017 at 08:45:39PM -0400, devin davison via cctalk wrote: I have both a pdp 11/34 and 11/23 and am trying to find some bbs software to run. Preferably something that will run under an os and not monopolize the whole machine. A

Re: BBS software for the PDP 11

On 18/05/2017 14:45, william degnan via cctalk wrote: There may have been Rainbow BBS programs, but I doubt anything for the 11/34. You may have to write this. That reminds me of a bit of obscure trivia... Back in the early days of FidoNet, one or more of the Fido BBS sysops had DEC Rain

Front Panels

Hi All Whilst I do have a reasonable stock of panels. The prospect of getting more made is doubtful as my silk screen people are more interested in T-shirts. As demand is low I might level the quantities out via ebay. Rod Smallwood -- There is no wrong or right Nor black and whit

Front Panels - Follow up

Hi We are ok for now but for future and as yet not designed panels I can still draw them. (I'm old but not that old) However with modern technology there has to be a multi-pass printer that can print on perspex (plexiglass) and closely simulate silk screening My goal is to be able to ke

Re: DEC archives

Just a bit too far for me. But there are a few questions I'd like answering. For example there was the time I was working for the Terminals Product Line and was over in the US I walked into the building one morning at Marlboro to find that the Product Line Manager (Bill Chalmers) and a lot of

Re: DEC archives

On 14/06/2017 18:54, Al Kossow via cctalk wrote: On 6/14/17 7:27 AM, Toby Thain via cctalk wrote: A thousand boxes are not at all accessible. They are trivial to access. You just have to cart your lazy asses to Fremont. About 8000 miles from here! Rod -- There is no wrong or right Nor bl

Re: DEC archives

On 15/06/2017 07:59, emanuel stiebler via cctalk wrote: On 2017-06-14 19:54, Al Kossow via cctalk wrote: On 6/14/17 7:27 AM, Toby Thain via cctalk wrote: A thousand boxes are not at all accessible. They are trivial to access. You just have to cart your lazy asses to Fremont. I probably

Re: DEC archives

On 15/06/2017 16:19, Al Kossow via cctalk wrote: There are no plans or budget to scan this material en mass, so it wouldn't make sense for anyone to come here assuming they would be allowed to do that. If you look at the actual museum policy on copying material in the collection, it is done on

Re: DEC Archives

On 15/06/2017 23:01, Lyle Bickley via cctalk wrote: On Tue, 13 Jun 2017 11:42:18 -0700 Lyle Bickley wrote: Note: This is a re-post - as my last post didn't seem to make it to cctalk... --snip-- I have personally reviewed several boxes of the DEC archives - and they are a terrific asset in

Re: DEC archives

On 15/06/2017 23:55, Mark Linimon via cctalk wrote: On Thu, Jun 15, 2017 at 03:17:33PM -0700, Curious Marc via cctalk wrote: It would not qualify it as occasional volunteering though: Well that's particularly what I was getting to: if some of us (e.g. myself) were in Silicon Valley for a few

Re: DEC archives

On 15/06/2017 19:27, Rich Alderson via cctalk wrote: From: Rod Smallwood Sent: Thursday, June 15, 2017 8:39 AM Stop this Policy and Budget nonsense and accept gracefully the help you have been offered. You speak as if this were Al's personal decision and policy. It is not. Museums are expec

Panel Printing and appeal for information

Hello Guys! Appeal for missing information: As you know I make front panels for PDP-8's and 11's. I have all the information I can find. Full drawing sets photos etc. However there are no detail drawings of the individual panels by themselves. For each panel there should be sets of drawings

Re: Fwd: pdp11/70 front panel

Depends on condition. A picture would be a good idea. Rod Smallwood On 08/07/2017 01:02, Paul via cctech wrote: On Wednesday, July 5, 2017 at 8:10:48 PM UTC-5, Sandra Tiffin wrote: I have one of these for sale, my late fiancé had it displayed in his studio. However, I have no idea of its

Re: DEC terminal/PDP-8 aficionados needed

On 29/07/2017 22:21, Antonio Carlini via cctalk wrote: On 29/07/17 17:26, Noel Chiappa via cctalk wrote: So Antonio donated a whole bunch of VAX articles to the Computer History wiki, with the result that many of the top items on the 'Wanted Pages' list: http://gunkies.org/wiki/Special:W

pdp-8/e restoration.

Hi List I looks like I have at last got a KK8-E CPU set to continue getting my 8/e back running again. Rather than make mistakes first and ask for help later I thought I might ask advice first. The system has a working rebuilt PSU with all of the caps reformed or replaced. Voltage

pdp-8/e restoration the next step.

Hi Guys Thanks for the info so far. Well I have moved on. I now have the minimum configuration. Programmers console, M8300,M8310,M8320,M8330,M849 and 4k of core memory. The M8320 is at the far end of the bus. Well much as I feared I cant write to memory using Load Address , set

pdp-8/e restoration.

Hi List! Movin right along. Programmers console now properly attached to light screening bar. Front panel and bezel on. Needs a bit more work. Not as secure or as straight as I would like. Then there's the key lock problem. Its in the off position and of course I don't have the key.

Re: pdp-8/e restoration.

On 06/08/2017 18:10, Noel Chiappa via cctalk wrote: > From: Ian S. King > Those keys are common across nearly all DEC machines prior to the ones > that started using plastic keys. XX2247 is the code. Someone on eBait is selling replicas for not wholly unreasonable amounts of mo

Re: pdp-8/e restoration.

On 07/08/2017 17:05, Philipp Hachtmann via cctalk wrote: On 04.08.2017 09:24, Rod Smallwood via cctalk wrote: Hi List Hi Rod! I looks like I have at last got a KK8-E CPU set to continue getting my 8/e back running again. It looks that you have one more set stored in my facility

Re: pdp-8/e restoration.

On 07/08/2017 22:52, Ian S. King via cctalk wrote: On Mon, Aug 7, 2017 at 2:40 PM, Pete Turnbull via cctalk < cctalk@classiccmp.org> wrote: On 07/08/2017 18:37, Rod Smallwood via cctalk wrote: So to-morrow connect up a terminal that will do 110 baud and try an echo test. Next p

Re: pdp-8/e restoration.

On 08/08/2017 00:01, Josh Dersch via cctalk wrote: On 8/7/2017 3:50 PM, Rod Smallwood via cctalk wrote: On 07/08/2017 22:52, Ian S. King via cctalk wrote: On Mon, Aug 7, 2017 at 2:40 PM, Pete Turnbull via cctalk < cctalk@classiccmp.org> wrote: On 07/08/2017 18:37, Rod Smallwo

Booting OS/8

OK RX8 is in the pdp-8/e connected to the RX01. OS/8 floppy in drive. All I need is the toggle in bootstrap and you never know. Rod -- Wanted one pdp-8/i rocker switch leaver to copy.

Re: Booting OS/8

On 08/08/2017 16:12, Josh Dersch via cctalk wrote: On 8/8/2017 6:40 AM, Rod Smallwood via cctalk wrote: OK RX8 is in the pdp-8/e connected to the RX01. OS/8 floppy in drive. All I need is the toggle in bootstrap and you never know. It's the first hit on google for "RX01 bootstr

Not Booting OS/8

Hi List Well not surprisingly it didn't. I keyed in the bootstrap and checked it a couple of times. Pressing clear produced a healthy clonk from the RX01 (RX01's and 2's clonk a lot). Pressing clear started the program but no activity from the drive. So next move will be to try and

Re: PDP-8I acrylic Front Panel

On 08/08/2017 21:43, Ray Neal via cctalk wrote: Rod; I'm looking for a PDP-8I acrylic Front Panel for my replica PDP-8I I'm putting together. I have a PCB board created by Vince and in between Hospital stays I have been able to populate it. The next step is to either locate a frame or to fin

RX8 M8357 Device address.

Hi Lis It looks like RX8 SEL is not asserted due to the device address not being set up on the DIP switches. Anybody know what they should be set to in terms of switch number, depressed/not depressed on side with numbers. Rod -- Wanted one pdp-8/i rocker switch leaver to copy.

Re: RX8 M8357 Device address.

On 09/08/2017 17:31, Al Kossow via cctalk wrote: it is device code 75 http://homepage.divms.uiowa.edu/~jones/pdp8/man/rx01.html On 8/9/17 9:24 AM, Al Kossow via cctalk wrote: On 8/9/17 9:23 AM, Josh Dersch wrote: The manual I linked contains configuration details for the RX01, RX8E and

Re: DEC Unibus, Omnibus and TTL Flip-Chips sought for!

Interesting - Card reader, Plotter and display controller Rod On 11/08/2017 09:24, Mattis Lind via cctalk wrote: Hello! I am looking for the following boards if anyone have them available: M829 / M8290 / M8291 M843 M842 M714 M716 A607 M701 M023 M704 /Mattis -- Wanted one pdp-8/i rocker

pdp-8/e restoration update.

Hi List Well I think I've found why the RX01 is not responding. The device address (75) is not getting decoded on the controller because the CPU does not assert BUS I/O PAUSE L Which it should do I think when it sees an IO instruction. Do I have this right? Rod Smallwood -- Wanted

Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring and restarting

Check the current On 18/08/2017 18:25, Dominique Carlier via cctalk wrote: Some news ! Following a risky way (but I did not see how to do otherwise), I deactivated the Power Fail by hiding the contact number 23 of the two power supplies. The idea was to avoid automatic protection by lowerin

Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring and restarting

Leaky Crowbar SCR? On 19/08/2017 17:06, Jon Elson via cctalk wrote: On 08/19/2017 03:17 AM, Dominique Carlier via cctalk wrote: Hello Marc, In fact no, i am not really sure, I checked twice all the big filtering caps but as you with a low voltage tester. These caps comes apparently from a ne

EMA Links on a G104 Sense/Inhibit board

Does anybody know how the EMA links should set on 4 x 4K G104 boards For example EMA     0 1 2   Field 0    IN    IN   IN   Field  1    ? ? ?   Field  2    ? ? ?   F

Re: Why women were the first computer programmers

On 24/08/2017 04:10, Brian Walenz via cctalk wrote: On Wed, Aug 23, 2017 at 8:59 PM, Al Kossow via cctalk wrote: "Nathan Ensmenger has observed" he's written a whole book on the subject "The Computer Boys Take Over" https://mitpress.mit.edu/books/computer-boys-take-over And: "Recording Ge

Rainbow Disk Imager

Hi   I have a bunch of .dsk RT11 400k image files I need to write to RX50 disks so I can boot from them on my 11/73 Somewhere there is a utility that will write the images to RX50 on a DEC Rainbow 100 under MS-DOS . Anybody know where to find it? Rod -- Wanted one pdp-8/i rocker swit

Re: Rainbow Disk Imager

Because I don't have any of those. I'm nearly all DEC here Rod On 14/09/2017 17:19, Fred Cisin via cctalk wrote: On Thu, 14 Sep 2017, Rod Smallwood via cctalk wrote:   I have a bunch of .dsk RT11 400k image files I need to write to RX50 disks so I can boot from them o

Re: Rainbow Disk Imager

On 14/09/2017 17:55, Paul Koning via cctalk wrote: On Sep 14, 2017, at 12:41 PM, Paul Koning via cctalk wrote: On Sep 14, 2017, at 12:27 PM, jim stephens via cctalk wrote: On 9/14/2017 9:19 AM, Fred Cisin via cctalk wrote: You have some .dsk images of SSDD 96tpi for 11/73. I have so

Re: Rainbow Disk Imager

On 14/09/2017 18:37, Rod Smallwood via cctalk wrote: On 14/09/2017 17:55, Paul Koning via cctalk wrote: On Sep 14, 2017, at 12:41 PM, Paul Koning via cctalk wrote: On Sep 14, 2017, at 12:27 PM, jim stephens via cctalk wrote: On 9/14/2017 9:19 AM, Fred Cisin via cctalk wrote: You

PDP-11/73 and 11/94 update

Well I did get the 11/73 booted from RX50 floppy on an RQDX3. I then went on to get a SCSI (DEC DSP5200) Hard Drive on a CQD220 booting and running RT-11 V5.4. In the process I established that I have a good working RX01 and a good working RX02 that both boot RT-11 V5.4 from 8 inch Floppy.

Re: PDP-11/73 and 11/94 update

Hi    1.   The complete RX02 with cable and disk (initialized and system copied /boot to it) boots the 11/73 on an RX02 controller so mode is correct.    2.        The 11/94 boot menu allows you to choose DY0 or DY1 and both have been tried after moving the floppy of course.     3.

Re: PDP-11/73 and 11/94 update

I installed the RX01 Unibus adapter in slot 5 Then replaced the slot 5 NPG  jumper (RX01 is not DMA) They are underneath the motherboard on an 11/94 Next I connected up the RX01 and used original DEC RT-11 v5.4 RX01 distribution disks. Then turned on and tried to boot DX. Same result it s

Re: PDP-11/73 and 11/94 update

On 20/09/2017 17:30, Ulrich Tagge via cctalk wrote: Hi Rod, I have not the chance to go into the basement before Weekend, but have document the installation here: http://www.pdp-11.de/index.php/pdp-11/rt11-5-4g-installation/ My 11/84 have the KDJ11-B (m8190). Vielen Dank am interessantes

PDP11/84 and PDP-11/94 notes

First ... If the following is already known or incorrect then apologies. In my efforts to get an 11/94 running with UniBus cards the following came to light. 1. You need to start with the fact there are _two_ different types of hybrid Uni/Qbus back planes that can go in a BA box. 2. One has

TU58 Serial port address

Hi   I have a TU58 - yes a real one - yes it works (sticky rollers fixed) . How do I know - tested it on a PC at 19200 baud.       I also have a DZQ11  M3106 4 Async. Line Board and cab kit with four RS232 connectors.       My 11/73 has a KDJ11-B so the console SLU is already set up.  

Re: TU58 Serial port address

Manual is no help. It tells you how to set the jumpers but not which ones for this situation. I do not know the correct addresses or vectors I need so I can't set them. So..   for this specific case ..  1. What do I connect to what  to get the TU58 connected to the 11/73 at 19200 baud

Re: TU58 Serial port address

On 06/10/2017 21:21, Noel Chiappa via cctalk wrote: > From: Rod Smallwood > I do not know the correct addresses or vectors I need so I can't set > them. > ... > State like this for each and every jumper required Sorry, too busy to type all that out. Jumper it for 7765

Re: PDP-Lifter

On 07/10/2017 06:53, Steve Malikoff via cctalk wrote: After the discussion last year about lifting and racking heavy gear, I bodged together some hardware and came up with the PDP-Lifter. It allows easy movement, lifting and lowering for racking and unracking equipment in 19" racks. Specifica

TU58 to 11/73 - Success!!

I had to use the magic wand (Tektronix scope probe) and we have a runner.. Bad connections as ever.. Rod -- Wanted one pdp-8/i rocker switch leaver to copy.

Re: OpenVMS Hobbyist & HPE vs. HP

On 08/10/2017 05:13, Zane Healy via cctalk wrote: Has anyone gotten any Hobbyist Licenses lately? I’m trying to get them, and I notice that while I’m signing up at an HPE.com website, the initial email comes from an HP.com address. So far no luck getting licenses, but they might have gon

Re: Did DEC make a Daisy Wheel printer?

LQP02 On 08/10/2017 18:19, Zane Healy via cctalk wrote: Did DEC make any sort of impact printer, besides dot-matrix printers? I have an LA50 or two, and dot-matrix isn’t what I’m after. Zane -- Wanted one pdp-8/i rocker switch leaver to copy.

Re: Did DEC make a Daisy Wheel printer?

On 10/10/2017 07:50, Eric Smith via cctalk wrote: On Sun, Oct 8, 2017 at 10:19 AM, Zane Healy via cctalk < cctalk@classiccmp.org> wrote: Did DEC make any sort of impact printer, besides dot-matrix printers? I have an LA50 or two, and dot-matrix isn’t what I’m after. They sold some drum, ch

A Mystery

I have in my possession a back plane from a BA23. Somebody has put glue in the last three slots. Can anybody explain that? Rod -- Wanted one pdp-8/i rocker switch leaver to copy.

It's back

After a  couple of months of outage my list feed is back.. Rod Smallwood --

[cctalk] Re: 1974 No Name Terminal

I worked on VDU's as an engineer in the UK before joining DEC to sell volume VT100's in 1975 There's a mention of block on one of the cards so a block mode terminal. That means enter data and press a key to send the lot. The card cage could mean its emulating something. I'd test as many capac

[cctalk] Re: 1974 No Name Terminal

tance the two resistors were set to so I can put a replacement in with same, hopefully that gets me close to what should be there. Brad -Original Message- From: Rod Smallwood via cctalk Sent: Wednesday, July 5, 2023 8:48 AM To: Douglas Taylor via cctalk Cc: Rod Smallwood Subject: [cct

[cctalk] Re: ICL / Digico

Hi     I worked with Digico systems in about 1974     I did some reseach a while back and did find some info.     I'll see what I have     Rod Smallwood On 24/07/2023 08:11, Christian Corti via cctalk wrote: So, I was trying to contact "Pete" at vintage-icl-computers.com several times durin

[cctalk] Re: What happened to the PDP-8 on ebay?

Notwithstanding I'm in the UK I do have a lot of PDP8/e era boards some of which I'd like to sell to raise funds to buy items I dont have. Rod Smallwood On 04/10/2023 03:23, Bill Degnan via cctalk wrote: There was a PDP-8 (rack straight 8 with asr33) that was on ebay that disappeared..anyone

[cctalk] List of DEC boards

Here's my list of spare boards Omnibus MM8-E M8320 M8650 M849 M8310 M8300 M8330 Unibus     RX11 G7273 M9970 M9047 M9714 QBUS M7941 M8029     RXV21 M7504  DEQNA-M M7850 M7546 M8186     KDF-11 M9400-YC M7555    RQDX3 Rod Smallwood

[cctalk] List of DEC boards - Offers invited.

Hi     I have had so many inquiries for the boards on my list its difficult to respond to them all.     Please make an offer for what you want.     Allow an additional minimum of $50 for UK  to US shipping     I'll keep the offer list open for a few days.     Rod Smallwood

[cctalk] Re: PDP-8/E front panels

Hi Bob     The attachment seems to be missing. Rod Also I hae some more boards available M7856     X 2 M863     X 2 M837    X 2 M8650 M8320 M880 + H241 (MR8 EC) M849 M3310 On 16/11/2023 20:53, Bob Rosenbloom via cctalk wrote: Do you have any more of the DEC PDP-8 e/m/f front panels? I'm lo

[cctalk] Re: RD54 Maxtor XT-2190 w/one long meep

Get a sheet of glass. In a not too dusty area (hint A/C has filers usually) gloves on Top off glass on - all will be revealed. Rod - Digital Equipment Corporation  1975 - 1985 On 27/02/2024 03:50, Chris Zach via cctalk wrote: Oh wait, that sound? Over and over? I had a RD54 type drive tha

[cctalk] Re: Drum memory on pdp11's? Wikipedia thinks so....

Core memory yes - Drum memory I dont think so. Rod Smallwood  (Digital Equipment Corporation 1975 - 1985) On 15/04/2024 08:06, Paul Flo Williams via cctalk wrote: On Sat, 13 Apr 2024 17:26:31 -0400 Christopher Zach via cctalk wrote: Was reading the Wikipedia article on Drum memories: https:

[cctalk] Re: The ultimate nerd fashion accessory

I saw the moon landing live on TV in '69 Now that is a cool watch - Hell yes man! R On 13/09/2024 07:00, Brent Hilpert via cctalk wrote: https://apollo-instruments.com Groan. Spoiler: Wristwatch DSKY

Re: Which DEC machine made use of th pre Flip-Chip board?

It could be a prototype that never made it to production, internal automated test gear or a bespoke job. Rod On 21/12/2018 10:49, Mattis Lind via cctalk wrote: There is an auction for some kind of early DEC module. It appears to be a bit slice of MB, AR and MQ. There is also a signature by Go

Re: Origin of 'Straight 8' name

I worked with PDP-8's from 1970 to 1975 and worked at DEC from 1975 to 1985. I cannot recall the term 'Straight 8' ever being used. I think it may have been referred to as the 'Model 8' Rod Smallwood On 22/12/2018 03:46, John Ames via cctalk wrote: I'd definitely be interested to hear if th

Re: Original AGC restoration / was Re: Apollo 8 Mission Control printers, or not?

On 30/12/2018 06:27, Daniel Seagraves via cctalk wrote: On Dec 29, 2018, at 11:17 AM, Curious Marc via cctalk wrote: Yes that would be lucky us. Hotel was no fun but owner understandably did not want to ship or even get separated from his AGC. We have been offered some real lab space in

11/93 Rebuild

Hi Guys    Well the RD53 in my 11/93 finally clapped out.    The CPU is a late model KDJ11-E with everything on the one board.    So its a switch from MFM to SCSI Drives.    A CQD220A will drive the hard disk and the RQDX3 will stay to look after the RX50    I've  put th

TU58FS

Hi     I am working on getting my KDJ11-E based system up. I have a CQD220A and a SCSI hard drive installed and formatted. A serial connection to a Raspberry Pi soon brought up the console on the PDP-11 using TU58FS. Next will be a second serial line to allow TU58 emulation. SFSG What is no

Re: TU58FS

19 00:56, Glen Slick via cctalk wrote: On Thu, May 23, 2019 at 1:36 PM Rod Smallwood via cctalk wrote: Hi I am working on getting my KDJ11-E based system up. I have a CQD220A and a SCSI hard drive installed and formatted. A serial connection to a Raspberry Pi soon brought up the console o

11/93 Rebuild

Hi   Thanks to Glen Slick I now have a old windows xp system running SIMH Its connected to my LAN so web and file access are OK In addition to the normal IDE drive it has an additional SCSI controller and drive   Using SIMH  I have created an image (RD54.dsk) containing a R

Re: 11/93 Rebuild

Hi   On an old XP box?  er neither will run Rod On 27/05/2019 08:25, Christian Corti via cctalk wrote: # dd if=RD54.dsk of=/dev/sda  [or whatever the device name is] Oh, you said Windows... I'd recommend installing Cygwin ;-) --

Re: 11/93 Rebuild

I think the answer may be PUTR but I'll wait and see what Glen says .. He's been right so far. Rod On 27/05/2019 09:56, Christian Corti via cctalk wrote: On Mon, 27 May 2019, Rod Smallwood wrote:   On an old XP box?  er neither will run My reply was meant as a hint. You should be able to f

11/93 rebuild

Hi     Whilst I wait to hear from Glen Slick who has got me this far (Thanks Glen) I'll restate the problem. 1. I now have an old XP system with SIMH on it (PDP11.exe) 2.  I have created RD54.dsk containing RSTS/E 3. Attached to the system is a 2.1Gb SCSI drive via an adaptec 2940 controlle

11/93 rebuild - Project Suspended - PC died

The Acer PC I was using to write the image to the SCSI drive has gone kaput. Clearly PSU (not plugtop  mains fuse). Its a non standard PSU and no schematic available. Fall back is to get one of the SLU's (other than the console) on the KDJ11-E going and TU58 it. Rod --

11/93 Rebuild - Project resumed - PSU replaced

11/93 Rebuild - Project resumed - PSU replaced Rod --

11/93 rebuild - Major and Significant Result.

Hi Due to the help from Glen Slick. (The only guy to answer the question as asked.) What to do is interesting. How to do it will get you there. I now have a SCSI drive on the 11/93 that thinks its an RD54 and is trying to boot RSTS/E. It fails gracefully during the boot  giving a

11/93 Rebuild - SCSI HD now boots RT11

Hi     Well I now have a bootable SCSI drive on my 11/93. Its not RSTS/E (yet) but it is RT 11 and reliable. Its a bit baseline but it runs. So next up was to see if we could get the RQDX3 to co-exist with the SCSI controller. I switched the base address to 160336 and it does not stop the

Re: 11/93 Rebuild - SCSI HD now boots RT11

On 31/05/2019 19:40, allison via cctalk wrote: On 05/31/2019 02:04 PM, Rod Smallwood via cctalk wrote: Hi     Well I now have a bootable SCSI drive on my 11/93. Its not RSTS/E (yet) but it is RT 11 and reliable. Its a bit baseline but it runs. So next up was to see if we could get the

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