- test-drb@ccmp.vtda.org - classiccmp.org

by mark＠markesystems.com

From: dwight <dkelvey at hotmail.com> > If we'd thought about it we could count to 1023 on our fingers. I used to play string bass in a symphony, and there were many times that there would be long periods of rest, where it was important to count the bars (measures) going by so as to come back in at the right time. To this day (that was 40+ years ago) I can still count quite rapidly up to 31 on one hand (either one). Higher numbers slow me down a bit... Old bass joke: During the last movement of Beethoven's 9th symphony, there is a very long tacit (rest) for the basses. So the bass section all went over to the bar across the street for a drink or three. To keep the conductor from passing by their entry, they put a rubber band around his music. So the situation was... Bottom of the ninth, basses loaded, score tied. (sorry...) ~~ Mark Moulding

5 years, 2 months

3
2
0 0

Epson QX-10 hard drive

by imp＠bsdimp.com

Greetings I recently purchased a QCS external hard disk on ebay. This was one of the companies that was selling DEC Rainbow hard drives. I had hoped it was an old Rainbow drive with interesting to me bits... Turns out it is an Epson QX-10 hard drive, full of interesting to bits for the QX-10 CP/M enthusiast. I've had trouble finding a suitable community to note this in should there be people around that care... so I thought I'd ask here is people know of good CP/M groups and/or QX-10/16 groups, mailing lists, irc channels, discord servers, etc I could find. Warner

5 years, 2 months

3
3
0 0

APL\360

by commodorejohn＠gmail.com

> From: Chuck Guzis <cclist at sydex.com> > Numbering of bits in a word is also interesting. Is the high order bit > in a 64 bit word, bit 0 or bit 63? Both conventions have been employed. This one has always boggled me, because it's the one aspect of the Endian Wars where there's a simple, straightforward answer grounded in basic mathematics - base ^ digit-number only gives the correct place-value when the lowest-order bit is numbered zero. It's beyond my ken how anybody thought the reverse was *valid,* let alone a good idea.

5 years, 2 months

4
3
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Just curious how many Hewlett-Packard Integral computers were sold. We have one here at the SMECC Museum that we are building a display around it for.

by couryhouse＠aol.com

Australian HP museum site... yes kudos to them!? What wonderful work they have done and some of the friendliest? peple around! Even though I pull a copy down from there. If it is,for something we have in the collection? I also try to get original manuals too.. On Sunday, January 31, 2021 Tony Duell <ard.p850ug1 at gmail.com> wrote: On Sun, Jan 31, 2021 at 6:25 AM Frank McConnell via cctalk <cctalk at classiccmp.org> wrote: > > On Jan 30, 2021, at 10:09, ED SHARPE via cctalk <cctalk at classiccmp.org> wrote: > > Hi Doug! No, we do not have a copy of this HP JOURNAL.? We do not have manuals? either.? We,are lucky to have the unit wonder if you can still order ink for the printer. I do have an unopened ink cartrige. You can get scans of the manuals from the Australian HP museum site Do you have any expansion boards in it? Extra memory is very useful (and you can turn any of the boards into a 1MByte one by adding the chips and changing links). As is an RS232 interface (something that IMHO should have been built-in) Do NOT leave the ink cartridge in the machine. The ink is somewhat corrosive and if it leaks onto the flexiprint that connects the cartridge to the logic PCB it will damage it. Due to the layout of the machine the flexiprint is longer than the one in a normal Thinkjet so you can't just raid one of those for spares. Yes there is a way to kludge it with ribbon cable and connectors but it's best not to have the problem in the first place. > > HP 51604A.? I was surprised a few months ago to find that Staples claims to be able to sell new HP cartridges.? Looking earlier today, HP can too! > > Seriously, we?re talking about ink cartridges including replacement print heads for printers manufactured in 1983. I was equally surprised to find that ink ribbons for the Epson HX20 laptop (M160 printer mechanism) along with the ones for the narrower M150 mechanism are still being made. But as I've said before, I'd rather find parts for a machine made 30 years ago than one made 5 years ago. -tony

5 years, 2 months

1
0
0 0

DEC backplane power connectors

by jnc＠mercury.lcs.mit.edu

> I have posted it here: Ooops, moved it; now here: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/dec_connectors.jpg Noel

5 years, 2 months

1
0
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DEC backplane power connectors

by jnc＠mercury.lcs.mit.edu

> From: Tom Uban > The part numbers are: . A106239-ND, TE Connectivity AMP Connectors 1-171196-0, CONN PLUG 6POS MATE-N-LOK NATRL > A1427-ND, TE Connectivity AMP Connectors 1-480323-0, CONN PLUG 15 POS MATE-N-LOK > See attached picture That didn't come through for people on the list; I have posted it here: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/tmp/dec_connectors.jpg so everyone can see his connectors. > Looking at the TE.com catalog, the picture for 1-480273-0 does not match > my DD11-DF connector Actually, the 1-480273-0 is _exactly_ the unit DEC used; I looked at the power distribution panel from a BA11-K, and that's what it uses. (I'm too burned out to look at the engineering drawings and get the part number to confirm; I'll do that 'soon'.) I took a picture of the male shells, and added it to the CHWiki page (I'll add the females tomorrow). The detail of the 6-pin one didn't show up too well, so I took another closeup of just it, here: https://gunkies.org/wiki/File:DECPwrConnMaleSml.jpg Your 15-pin is the same as mine (the part number matches). Your 6-pin has 'wings' on the side (these prevent it pulling through when placed in a hole in sheet metal); the 6-pin DEC used has little right-angle arms, just like the ones on the 15-pin, to brace it in place. They are compatible, though, I think; a female shell that will take one probably will take the other. Noel

5 years, 2 months

1
0
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Just curious how many Hewlett-Packard Integral computers were sold. We have one here at the SMECC Museum that we are building a display around it for.

by Wayne.Smith＠warnerbros.com

On Sat, Jan 30, 2021 at 9:01 AM ED SHARPE via cctalk <cctalk at classiccmp.org> wrote: > Just curious how many Hewlett-Packard Integral? computers were sold.?? > > We have one here at the SMECC Museum that we are building a display around it for.?? > > Of course we are looking for any advertising material, posters or anyting visually related to this computer to make the display "more than just a computer on the table"? > > Please let us know if you have any material that would fit this need!?? > > Thank you very much in advance > Ed Sharpe - Archivist?? for SMECC As to the number sold, you should be able to get a sense of it by collecting serial numbers from those who have them - once you get enough of them (maybe 20 or so) you should get a sense of about where the numbering started and where it ended. I have two units and if you're interested I can pull the numbers and send them along.

5 years, 2 months

5
7
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Microsoft fortran and c manuals

by rdawson16＠hotmail.com

Hi Thomas, Did you ever the pdf copies of these? I also would like to get a set. Thanks, Randy

5 years, 2 months

2
1
0 0

Usenet and Google Groups

by jfoust＠threedee.com

At 06:01 PM 1/30/2021, you wrote: >>>Which Henry was that?? Henry Spencer perhaps? >>Yes, Henry Spencer (formerly of zoo.toronto.edu). >>N. > >Another blast from the past. I haven't seen anything of or spoken with him in nearly 30 years. A legend, indeed, and one that only makes me upset about Google's Usenet archive. https://en.wikipedia.org/wiki/Henry_Spencer https://en.wikipedia.org/wiki/Google_Groups Couldn't Google just give someone else a copy of what Spencer (and everyone else) gave them? - John

5 years, 2 months

4
3
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Just curious how many Hewlett-Packard Integral computers were sold. We have one here at the SMECC Museum that we are building a display around it for.

by couryhouse＠aol.com

Wayne.. yes please send the 2? serial numbers and others are invited to participate also. Probably good idea to send offlist? to kerp from clogging lister.? Thanks Ed# On Sunday, January 31, 2021 Smith, Wayne via cctalk <Wayne.Smith at warnerbros.com; cctalk at classiccmp.org> wrote: On Sat, Jan 30, 2021 at 9:01 AM ED SHARPE via cctalk <cctalk at classiccmp.org> wrote: > Just curious how many Hewlett-Packard Integral? computers were sold.?? > > We have one here at the SMECC Museum that we are building a display around it for.?? > > Of course we are looking for any advertising material, posters or anyting visually related to this computer to make the display "more than just a computer on the table"? > > Please let us know if you have any material that would fit this need!?? > > Thank you very much in advance > Ed Sharpe - Archivist?? for SMECC As to the number sold, you should be able to get a sense of it by collecting serial numbers from those who have them - once you get enough of them (maybe 20 or so) you should get a sense of about where the numbering started and where it ended.? I have two units and if you're interested I can pull the numbers and send them along.

5 years, 2 months

1
0
0 0

Small DEC QBUS backplane

by nw.johnson＠ieee.org

I'm trying to repair an LSI-11/93 that has a bus timeout problem.? Unfortunately the BA23 box it normally sits in lives in a cupboard with printers stowed on top of it and due to my domestic situation (small condo) I can't get it out to scope or get a scope anywhere near it to scope the bus. I'm thinking that the solution would be to get a small QBUS backplane that I can put on my desk in the middle of my test equipment. Like a 4-slot ABAB oir even ABCD would do. Does anybody have one they don't want?? Power supply not needed. cheers, Nigel -- Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU Amateur Radio, the origin of the open-source concept! Skype: TILBURY2591 nw.johnson at ieee.org

5 years, 2 months

5
15
0 0

Small DEC QBUS backplane

by jnc＠mercury.lcs.mit.edu

> From: Glen Slick > The KDJ11-E 11/93 has PMI signals on the CD connectors, so you need a > Q/CD backplane I have this bit set that plugging a PMI card into a Q/Q slot will damage it? (I think the issue is that some PMI pins are 12V on normal QBUS; too tired to check tonight, I'll get to it tomorrow.) Noel

5 years, 2 months

2
1
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Just curious how many Hewlett-Packard Integral computers were sold. We have one here at the SMECC Museum that we are building a display around it for.

by couryhouse＠aol.com

Thanks? folks for the part number for ink jet cartridges. .. we have differnt interface standards version of Thinkjet? plusevthe one in the integral so we can play still! Big thanks for the corisive? ink warning. .. I had no idea! Hopefully we can turn up some poster art and other things? to add? to the display too!? -Ed# On Sunday, January 31, 2021 Tony Duell <ard.p850ug1 at gmail.com> wrote: On Sun, Jan 31, 2021 at 6:25 AM Frank McConnell via cctalk <cctalk at classiccmp.org> wrote: > > On Jan 30, 2021, at 10:09, ED SHARPE via cctalk <cctalk at classiccmp.org> wrote: > > Hi Doug! No, we do not have a copy of this HP JOURNAL.? We do not have manuals? either.? We,are lucky to have the unit wonder if you can still order ink for the printer. I do have an unopened ink cartrige. You can get scans of the manuals from the Australian HP museum site Do you have any expansion boards in it? Extra memory is very useful (and you can turn any of the boards into a 1MByte one by adding the chips and changing links). As is an RS232 interface (something that IMHO should have been built-in) Do NOT leave the ink cartridge in the machine. The ink is somewhat corrosive and if it leaks onto the flexiprint that connects the cartridge to the logic PCB it will damage it. Due to the layout of the machine the flexiprint is longer than the one in a normal Thinkjet so you can't just raid one of those for spares. Yes there is a way to kludge it with ribbon cable and connectors but it's best not to have the problem in the first place. > > HP 51604A.? I was surprised a few months ago to find that Staples claims to be able to sell new HP cartridges.? Looking earlier today, HP can too! > > Seriously, we?re talking about ink cartridges including replacement print heads for printers manufactured in 1983. I was equally surprised to find that ink ribbons for the Epson HX20 laptop (M160 printer mechanism) along with the ones for the narrower M150 mechanism are still being made. But as I've said before, I'd rather find parts for a machine made 30 years ago than one made 5 years ago. -tony

5 years, 2 months

1
0
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Just curious how many Hewlett-Packard Integral computers were sold. We have one here at the SMECC Museum that we are building a display around it for.

by couryhouse＠aol.com

Hi Doug! No, we do not have a copy of this HP JOURNAL.? We do not have manuals? either.? We,are lucky to have the unit wonder if you can still order ink for the printer. I do have an unopened ink cartrige. I will have to get a copy of this journal meanwhile I will read this one you sent the link to! Back when we were selling? the HP PC? computers? this was a current product but outside our contract? with HP.? I was working with HP 150 abd the display potables HP offered and used 1000 2000 and 3000 systems? but always looked at how neat? this was. Ed# On Saturday, January 30, 2021 Doug Salot <doug at blinkenlights.com> wrote: I assume you already have a copy of the Oct 1985 HP Journal?http://hparchive.com/Journals/HPJ-1985-10.pdf On Sat, Jan 30, 2021 at 9:01 AM ED SHARPE via cctalk <cctalk at classiccmp.org> wrote: Just curious how many Hewlett-Packard Integral? computers were sold.?? We have one here at the SMECC Museum that we are building a display around it for.?? Of course we are looking for any advertising material, posters or anyting visually related to this computer to make the display "more than just a computer on the table"? Please let us know if you have any material that would fit this need!?? Thank you very much in advance Ed Sharpe - Archivist?? for SMECC

5 years, 2 months

3
2
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cctalk Digest, Vol 76, Issue 29

by mark＠markesystems.com

On 1/29/21 12:58 PM, Fred Cisin via cctalk wrote: >> I like indentation, and demanded it from my students. > > That's fine, but when you have a language that makes indentation part of > the language (i.e. no braces, brackets or keywords denoting boundaries > of the block) , there be monsters. > > And yes, there are such languages. Uh - Python comes to mind... ~~ Mark Moulding

5 years, 2 months

4
3
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Just curious how many Hewlett-Packard Integral computers were sold. We have one here at the SMECC Museum that we are building a display around it for.

by couryhouse＠aol.com

Just curious how many Hewlett-Packard Integral? computers were sold.?? We have one here at the SMECC Museum that we are building a display around it for.?? Of course we are looking for any advertising material, posters or anyting visually related to this computer to make the display "more than just a computer on the table"? Please let us know if you have any material that would fit this need!?? Thank you very much in advance Ed Sharpe - Archivist?? for SMECC

5 years, 2 months

2
1
0 0

APL\360

by cisin＠xenosoft.com

> Whenever I start a new job the first thing I do today is enable > -Werror; all warnings are errors. And I?ll fix every one. Even > when everyone claims that ?These are not a problem?. Before > that existed, I?d do the same with lint, and FlexeLint when I > could get it. On Fri, 29 Jan 2021, wrcooke at wrcooke.net wrote: > That's exactly what I did and was then told I was likely to get fired for > it. I left that job soon after. > "A person who never made a mistake never tried anything new." -- Albert > Einstein Similarly, "You don't have time to write comments as you go along. You can go back and add them in AFTER the program is working." Of course, as soon as it "seems to be working", "We're not paying you to mess with stuff that's already DONE. We have ANOTHER project that you have to get on immediately." It's not good to be in a job where they won't let you be thorough in error checking nor let you write comments. And, of course, "Don't waste space with more than two decimal digits for year. NOTHING that we are doing now will still be in use 30 years from now." One of the tasks that I was assigned (working for a contractor at GSFC) was to work on converting a wall of punch-card subroutines for plotting on Calcomp plotters that needed to be changed to work on Stromberg-Carlson (later Stromberg Datagraphics). It was budgeted for a LONG project to rewrite all of them. I realized that all of the subroutines for Calcomp called lower and lower level routines, on down to a small number of primitives. It was easy to write primitives for those lowest level ones, that worked on the SC/SD. I got some help with the JCL to link my primitives to the routines for the Calcomps. All of the routines for Calcomp worked fine calling their lower level routines, and ultimately calling MY primitives. The company got a small bonus for getting it all done way sooner than planned, and I got a private major reprimand for getting it all done way sooner than it was budgeted for. Many others earned bonuses for the company. The company distributed the bonuses as BIG bonuses to upper executives (I think that the top guy got a car), and gave each of us a gift certificate/coupon for a turkey.

5 years, 2 months

2
1
0 0

CPT Phoenix Jr system unit?

by cmhanson＠eschatologist.net

I?ve acquired the display and keyboard portion of a CPT Phoenix Jr but the seller didn?t have the system unit. (I suspect someone along the chain of custody thought it was a generic PC and recycled it.) Does anyone have one that needs a home? ? Chris ? who has an affinity for portrait displays Sent from my iPhone

5 years, 2 months

1
0
0 0

PDP-10 prints on eBait

by jnc＠mercury.lcs.mit.edu

Did someone here buy these: https://www.ebay.com/itm/265018225826 I was wondering if they'll be scanned. Noel

5 years, 2 months

1
0
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Ridiculous RL11's on eBait

by jnc＠mercury.lcs.mit.edu

This seller: https://www.ebay.com/itm/303862645513 is _completely_ insane! ~$2400 for an RL11 board? Noel

5 years, 2 months

2
1
0 0

Half-height SCSI enclosure

by van.snyder＠sbcglobal.net

In case you need a half-height SCSI enclosure to add to your VAX etc, I put one up on EBay. Item ID: 224332273248 https://www.ebay.com/itm/224332273248 Van Snyder

5 years, 2 months

1
0
0 0

DEC backplane power connectors

by jnc＠mercury.lcs.mit.edu

> I have a feeling there are two shell designs for the 6 pin. Like I said, I have a vague memory of another keying design (I think it used a ridge running parallel to the direction of insertion), but I don't think it's >from any DEC gear. There is definitely yet _another_ keying design, with triangular sawteeth, but again, I don't think any DEC gear used that. > The one on my DD11-DF that I want to mate has detents in the corners > while the catalog picture for the 6 pin on your part number shows a > square in the center of the side. Yes, the ones on the DD11-[C,D] (female shell, male pins) have 2 filled-in corners, and the ones on the harness into which they plug (male shell, female pins) have both the cutout corners (to match the filled-in corners on the female shells), _and_ "a square in the center of the side". As I said, I had verified that my female shells plugged into the male shells on an -11/40 harness; I just went and checked, those males have the exact identical shape to the ones I got (with the listed part number), including both cutout corners and the square in the center of the side. (Oddly enough, the 15-pin male shells used in that generation of DEC power connectors do not have the square in the center of the side, just the cutout corners.) Noel

5 years, 2 months

5
4
0 0

UNIVAC

by billdegnan＠gmail.com

I do not know this guy, this came through my site, but if you do have info that you think he might find useful and would like to share please contact CECIL the Specific. VintageComputer.net Inquiry Contact Information Name: CECIL CRAIN Email: ccrain at rgoldlegal-got-com Phone: 4157869527 ------------------------- Comments: I'm looking for any information about Bakelite insulating materials and phenolic resins used in Univac DCT products manufactured in the Salt Lake City facility from 1970 to 1978. VintageComputer.net --------------------------------------------------------------- Bill

5 years, 2 months

11
19
0 0

DEC backplane power connectors

by jnc＠mercury.lcs.mit.edu

> Are the power connectors on the DEC PDP-11 backplanes (e.g. DD11-DF > 15pin and 6pin) Molex or other? > Are they still commonly available? https://gunkies.org/wiki/DEC_power_distribution_connectors#Connectors I'm not sure why I bothered to write all this stuff up; it was clearly a waste of time. Noel

5 years, 2 months

6
5
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DEC backplane power connectors

by jnc＠mercury.lcs.mit.edu

> I may have gotten the wrong 6pin shell. I have this very vague memory of some similar connector shell, but I have no memory of what the difference is. I just checked the shells I have here, and they definitely fit onto the power harness on an -11/40; and the numbers on the Web page are correct. If yours arrives, and it works, please send me the number and I'll add it to the page. Actually, if it _doesn't_ work, send me the number, and I'll add a 'no not use xxx, it doesn't work' note. Noel

5 years, 2 months

2
1
0 0

Want To Buy: HP 9817 Monitor and Keyboard

by tangentdelta＠protonmail.com

I have an HP 9817 and 9133D disk drive that I am trying to get going. The 9817 has a 98204B composite video card. I can mess with the settings of a composite monitor enough to barely read the text on the screen, which indicates that the machine is trying to boot from device A. I tried to make an image of the hard drive in the 9133D using Dave's MFM emulator, but the drive is pretty much toast and I wasn't able to recover much from it. If I connect the drive to the computer, it fails to boot and goes into BASIC. I do not have a compatible HP monitor or HIL keyboard to use with the machine. I was planning on building a PS2 to HIL converter, but having an actual keyboard would be far easier. Likewise, having a monitor would be easier than abusing a normal composite display into working. It looks like there were a bunch of compatible monitors back in the day. The 35721 and 35731B are mentioned on the HP Museum website.

5 years, 2 months

2
3
0 0

DDCMP sync?

by paulkoning＠comcast.net

In playing with DECnet I built a DDCMP implementation which deals with a byte stream, normally from a UART. So that works nicely with async link DDCMP as found in RSX and several other operating systems. But the speed is limited. The other option would be synchronous links, which would enable connections to DMC11 or the like at speeds up to 1 Mb/s. But synchronous comm devices that connect to modern computers aren't so easy to find, though I have seen a few. After playing with Arduino for LK201 keyboard emulation I started to wonder if one could be made to be a synchronous comm link with a USB back end, with low level things like byte framing and maybe DDCMP packet format handling in there, but the protocol state machine in the host behind the USB interface. For moderate speeds that seems entirely practical. For 1 Mb/s, probably not, though perhaps one of the fast ARM based units with its built-in SPI could be warped into that. The alternative would be something like a BeagleBone Black (or Green) such as David Gesswein used as the engine for his MFM hard disk emulator. That clearly could do the job without any strain. So I'm wondering: would there be interest in such a thing? If yes, should it be a modem-connected one (RS232 signaling, bit clock supplied externally by a modem or modem-eliminator)? Or should it be the "integral modem" short distance type, the ones that used a pair of coax with 4-pin AMP connectors like this https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/2… ? paul

5 years, 2 months

5
11
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DEC part number system

by jnc＠mercury.lcs.mit.edu

So, DEC part numbers (xx-yyyyy-zz) have a system where the 'xx' says what _kind_ of part it is; e.g. bootstrap PROMs are all 23-xxxxx-yy. I seem to recall reading at some point something which listed all the xx- codes, and what they meant - but now I can't find it. A Web search didn't turn it up, and it's not in the 1974 'engineering handbook'? Does anyone recall seeing it, and if so, where? Obviously, I could look through a bunch of print sets, and reconstruct it (e.g. 90- seems to mean mounting hardware - nuts and bolts, etc) but I'd rather not put the time and energy into reconstructing the wheel, unless there's no other way. Noel

5 years, 2 months

7
8
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Looking for HP marketing posters, in English and other world laguages large systems like HP-3000 as well as HP-150 and other pc and workstations... urgent need for monarch butterfly HP-150 poster!!! Will be part of smecc museum hp display. - Thanks Ed#

by couryhouse＠aol.com

Looking for HP marketing posters, in English and other world laguages large systems like HP-3000 as well as HP-150 and other pc and workstations...?? urgent need for monarch butterfly HP-150 poster!!!? Will be part of smecc museum hp display. -? Thanks Ed#

5 years, 2 months

1
0
0 0

Andromeda UDC-11

by aek＠bitsavers.org

Does anyone still have one of these with the 50 pin drive splitter card and could take some pictures? I picked one up a while ago and just noticed a 20 pin part is missing at U91, probably a PAL :-(

5 years, 2 months

4
4
0 0

50 free 8 inch floppies!

by cz＠alembic.crystel.com

Ok, with the RX02 running I see that 50 of these disks from Solarex were formatted with the FD: driver which is probably the MXV21 controller. Since I don't have a 5.4 version of this driver and to be honest will not be putting the MXV11 controller online anytime soon I'm offering these disks for free. So if you need 50 disks with various versions of RT11 and god knows what data on them or 50 frisbees let me know and they're yours for the cost of shipping. I need to either pitch these things or give them away. Thanks! Chris

5 years, 2 months

3
2
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Needed HP 918lx computer trim bezel!a nice one appreciated bit one needing painting or? better than none!Please advise !Ed Sharpe Archivist for SMECC

by couryhouse＠aol.com

Needed? HP 918lx computer? trim bezel!?a nice? one? appreciated? bit? one needing painting? or?? better? than none!Please? advise !?Ed Sharpe Archivist? for SMECC?

5 years, 2 months

1
0
0 0

Modifying a RXV21 for an 11/83

by cz＠alembic.crystel.com

So I found an RXV21 board in the pile of stuff here and popped it into my 83. Crashes the system. It's an M8029 D board, and I see from this site that you have to add a few traces and cut a few others to make it work on an 11/73 or better. http://www.chdickman.com/rx02/ I'll pop in an 11/23+ CPU just to test it, but is it really just putting in two wires on the top of the board and cutting a total of three traces? Looks simple enough... C

5 years, 2 months

2
4
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Rod Coleman's personal history of founding, building & running SAGE

by lproven＠gmail.com

On Sun, 3 Jan 2021 at 03:53, Boris Gimbarzevsky <boris at summitclinic.com> wrote: > > Ran into 68000 processor for > first time in 1986 when my father bought a 512 K > Mac and couldn't believe performance of this CPU It is odd. I had read of it, of course, but for me the revelation was getting an Acorn Archimedes in 1989, with an 8MHz ARM2, and seeing it blast past benchmarks of ~8MHz 68K machines such as the Amiga 500 or Atari 512 ST. It was about 4x faster, I believe. For me -- being a bit too young for the early days of the 68K family -- it was not a performance chip, but more about its ability to have lots of flat memory, unlike the crippled Intel chips that IBM used. > Weird that Rod Coleman had 68000 > instruction set associated with IBM 370 whereas > to me it was very PDP-11 like I've heard that before, yes,. and never the IBM comparison. I suppose it is a matter of what you're more familiar with. > Thanks for the link as didn't realize 68000 was > used for home systems before I ran into Mac. Sinclair's QL used a 68008 and was launched some weeks before the Mac. Of course Apple's own Lisa was before the Mac, too. Very soon after came the Amiga and ST -- the "Jackintosh", "power without the price." -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? gMail/gTalk/gHangouts: lproven at gmail.com Twitter/Facebook/LinkedIn/Flickr: lproven ? Skype: liamproven UK: +44 7939-087884 ? ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053

5 years, 2 months

13
22
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DEC Pro operating systems and MFM emulator

by paulkoning＠comcast.net

The question was asked (I misplaced the note) if the OS images that are on the Xhomer website work with David Gesswein's MFM emulator on real hardware. You can turn these into emulator data files, provided you have the latest ext2emu tool that's part of David's software (as of 1/19/2021). The format needed is "Elektronika_85" which is the Pro format, called that because it was first added to the emulator as the format found on the Russian bootleg copy of the Pro of that name. Results, on my Pro 380: 1. P/OS 3.2: works. 2. Venix: panic at boot, "Bad access number". That doesn't mean anything to me. I wonder if the issue is that Venix doesn't support the 380. 3. RT-11 5.3: works. For grins I tried a smaller interleave factor than the default 5:1, since it seems reasonable that this should make things go faster on the Pro 380, given that its CPU is about 4x the speed of the one in the Pro 350. Somewhat to my surprise this isn't the case; the performance indicates that at 4:1 or smaller interleave the software misses the next sector and has to wait for another revolution. paul

5 years, 2 months

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HP 3000, APL\3000, the HP 2641A APL Display Station, and stuff.

by gavin＠learn.bio

As some people here are aware, I have spent probably too much time this summer hacking on J. David Bryan's excellent Classic HP 3000 simulator and trying to build up the ultimate classic 1980s HP 3000 system (virtually speaking). I started with the MPE V/R KIT that's widely available and expanded that into a 5x120MB HP 7925 disc system and configured things like the system directory size and all the system tables to make a fully functional multi-user server. I then set about collecting as much old MPE software as I could find, which included Keven Miller's collection of the old Contributed Software Library tapes which were conveniently available in SIMH format. This is a huge trove of cool stuff including most of the classic mini/mainframe games (Dungeon, Warp, Advent, etc., etc.) and even a little game called DRAGONS that was written in 1980 by a guy named Bruce Nesmith when he was in college and he used it to get a job at TSR and went on to write parts of many classic D&D products and eventually landed at Bethesda where among other things he was the lead designer for another little game called The Elder Scrolls V: Skyrim. I was able to track Bruce down and give him a copy of the system with his 40 year old game running on it. The CSL tapes also include other amazing goodies that people developed and gave away over the years, including a FORTH and LISP, as well as most of the system and utility programs that people used to run their 3000 shops. It's quite fun to explore. I was curious how far we could push the 3000 simulator, so I hacked all the memory bank registers to be six bits instead of four bits, and we now have a simulated HP 3000 Series III that supports 8MB of memory, 4x more than any physical system ever did. I started trying to do the same thing for giant disc drives, but MPE turned out to have too much knowledge of what the supported disc models look like to make it practical. Bummer. Since I met my first HP 3000 in 1980 (40 years ago this month), people would talk about what was probably the most rare and exotic HP software subsystem ever produced, APL\3000. APL on the 3000 was a project started at HP Labs in Palo Alto in the early 1970s. They were likely motivated by the success IBM was having with mainframe APL timesharing services. This would be the first full APL implementation on a "small" (non-mainframe) computer. It would be the first APL with a compiler (and a byte-code virtual machine to execute the compiled code), it would include an additional new language APLGOL (APL with ALGOL like structured control statements), and it managed to support APL workspaces of unlimited size through a clever set of system CPU microcode extensions that provided a flat 32-bit addressing capability (on a 16-bit machine where every other language was limited to a 64KB data segment). Because APL required these extra special CPU instructions that you got as a set of ROM chips when you bought the $15,000 APL\3000, and because APL ultimately failed as a product (another story in itself) and thus HP never implemented these instructions on their later HP 3000 models, I never saw it run on a real HP 3000, but over the years we talked about wouldn't it be cool to find a way to get APL running again. With assistance and moral support from Stan Sieler and Frank McConnell and others, I was ultimately able to reverse-engineer the behavior of the undocumented ten magic APL CPU instructions needed to get it to run and implement them as part of the MPE unimplemented instruction trap and now APL\3000 runs again for the first time in ~35 years. Somewhat ironically, this implementation method could have been used back in 1980 as I didn't actually end up changing the hardware simulation code at all, and it should also run (if a bit slowly) on any physical classic architecture 3000. So that was cool and all, but what is APL without all the weird overstruck characters and whatnot? APL\3000 supports the use of plain ASCII terminals through blecherous trigraphs like "QD for the APL quad character, but this is hardly satisfying. So the quest was on to find a solution. Back in 1976 when APL\3000 was released, there was a companion HP terminal in the 264x line, the HP 2641A APL Display Station, which was basically an HP 2645A with special firmware and APL character set ROMs that supported all the APL special characters as well as overstrikes (the terminal would take X<backspace>Y and lookup to see if it had a character to represent Y overstriking X and if so it would show that on the display, and if that got transmitted to the host it would convert it back into the original three character overstriking sequence). I briefly looked into the idea of hacking QCTerm or Putty or something, but then I found out from Curious Chris that an HP 2645A emulator already existed in the MAME emulator system! Since the '41 is basically just a '45 with modified firmware, and Bitsavers had both the character set ROMs as well as the firmware ROMs from a '41, this sounded like it might be easy! There was a snag however in that the firmware ROM images that were allegedly from a '41 turned out to actually be from an ordinary '45. But we did have the character sets and one of the ROMs from the second CTL PCA. I put out a call on the Vintage HP list to see if anyone might possibly have a lead on an actual HP 2641A, and Kyle Owen responded that not only did he have one he could also dump the ROMs for us. So a few days and a few hacks to F. Ulivi's MAME hp2645 driver later we now have a functioning MAME HP 2641A terminal emulation, so you can experience APL\3000 in all its original glory. I bundled up a somewhat stripped down MAME along with my turnkey 3000 setup so both emulated HP terminals are just a couple clicks away. So that's how I spent my summer vacation (who am I kidding, it's pretty much all vacation these days). It has been a lot of fun revisiting all this old 3000 stuff as well as the numerous people I talked to along the way including some of those who were around at APL\3000's birth (before my time). It was rather a lot of work so I'd like to feel it might be useful to someone in the future who is digging into this part of history. Because of all the usual reasons, I don't plan on hosting it permanently until and unless we maybe someday get the licensing worked out (the 50th anniversary of the HP 3000 will be in a couple years so maybe people will get interested again then) but I will offer it up here to my fellow computer history nuts if you want to help ensure that it doesn't vanish if I get run over by a bus or something :) This is a simulated HP 3000 Series III (circa 1980) running MPE V/R (circa 1986) with 8MB of memory, all the language subsystems (APL, BASIC, BASICOMP, RPG, FORTRAN (66), SPL, PASCAL, COBOL (68), COBOL II (74)), 20 years of users group contributed software, many classic historical computer games, etc. Software archaeologists can get lost in here for years. Oh, and thanks to Dave Elward, the HP 2000 Timesharing BASIC contributed library is even included (kinda sorta converted to MPE BASIC) for good measure. This is a streamlined turnkey edition that's ready to run out of the box with no assembly required (all batteries are included). Currently, I only provide executables for Windows (sorry) but am in the process of getting the 3000 simulator changes (for large memory support) and the new MAME hp2641 driver back upstream. Instructions and further details can be found in the README.txt hint book for this adventure. 94MB Google Drive link: https://drive.google.com/file/d/1bmXvHkBLbUeLAid73EJ4H1yQ2uwXQuRu Gavin P.S. I'm giving a talk on the history of APL\3000 and its resurrection to the ACM APLBUG group in a couple weeks. If anyone is interested I can provide more details when I have them.

5 years, 2 months

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cc:Mail

by tomas＠basun.net

Hi all, I don't suppose there is anybody here who has `Lotus cc:Mail Router Release 5.1' ? /Tomas

5 years, 2 months

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Got DSM-11 running, any manuals online?

by cz＠alembic.crystel.com

Well, with Dave's help we got the DSM-11 disk to boot on SIMH. Oddly enough SIMH seems to read a raw RQDX1/2 disk pretty well. sim> attach rq0 dsm.dsk sim> set cpu 11/73,1m Disabling RK Disabling HK Disabling TM sim> boot rq0 Booting DSM-11... DSM-11 Version 3.0A Now running the baseline system. <DKHER>:1 G ^STU Exit DSM-11 Version 3.0A Device #1 UCI: Exit DSM-11 Version 3.0A Device #1 UCI: ? <NOUCI>:0 Exit The problem is I don't remember how to use it anymore. Is there a PDF of the DSM-11 manual anywhere? I think this was a clean install, but I'd like to check it for data before putting it into archives. Also which archive would be best for it? CZ

5 years, 2 months

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DEC Pro 3xx archives

by paulkoning＠comcast.net

I recently ran into an archive of various Pro 300 items, mostly from DECUS I believe. That includes a full P/OS 3.2 distribution including (!) DECnet/Pro if I saw that right. It's at ftp://ftp.update.uu.se/pub/professional/ What makes things somewhat painful is that it's LHA compressed Teledisk images, which is an ancient DOS based floppy imaging tool. The instructions say to run Teledisk on a DOS system with a 5.25 inch floppy drive to write the images to RX50 floppies, which can then be used. If you don't have DOS handy, or would rather get floppy image files for use with Xhomer, this can work but it's a bit painful. I found there's a simpler way. 1. Decompress the LHA files. On a Mac, the unarchiver (I think that comes with the OS?) handles that format. On other operating systems, I assume it's equally straightforward to find a tool that handles this. You now have a pile of *.TD0 files, which are the TeleDisk format files. 2. From http://www.seasip.info/Unix/LibDsk/ install LibDsk 1.5 (not 1.4). 3. Use the dsktrans tool you got from step 2 to convert each *.TD0 file to a raw image, like this: dsktrans -otype raw PRO177/177-21.TD0 proinstallv32.dsk "raw" format means a straight sector dump in physical order; this is the format expected by xHomer. If for any reason you want a logical order image, for example to give to the SIMH "rq" device that emulates an RQDXn controller, you'll need a tool that reorders things. I have one in my RSTS file system tool "flx" (V3 in Python, not the earlier 2.6 in C), "rx50.py". I can supply more details if needed. paul

5 years, 2 months

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<Plug> HP1000 A990 Servers

by jesse＠cypress-tech.com

I have a few of these A990 boxes. They are complete with memory, internal disk & DAT, & any 1000 interface you could possibly need. They are the smaller 14-slot Micro boxes so a small footprint. I'm doing a few of them for $1,300.00 each.. If anyone wants one, let me know. The ebay link is below and feel free to ask me any questions about them. www.ebay.com/itm/383752338096 <www.ebay.com/itm/383752338096> Thanks Jesse Cypress Tech

5 years, 2 months

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cc:Mail version numbers

by tomas＠basun.net

People, I'm trying to wrap my head around cc:Mail version numbers. Various products such as Mobile and Gateways have their own separate series of numbers, but the main products seem to be as follows. Release Database Appeared in 1? ? ? 2? 6? ? 3? 6? ? 4? 6 ? 5 6 1995 6 8 1996 7? 8 ? 8 8 1997 I saw someplace that I cannot find now that DB6 is from 1989. Can anybody fill in the missing numbers? So for example, there is a package on Ebay right now https://www.ebay.com/itm/LOTUS-ccMAIL-in-original-box-diskettes-manuals-Win… that seems to say `Release 2.01' and 1993. How does that compute? /Tomas

5 years, 2 months

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cctech Digest, Vol 76, Issue 20

by jonas＠otter.se

On 2021-01-20 19:00, "Ali" <cctalk at ibm51xx.net> wrote: > Message: 14 > Date: Wed, 20 Jan 2021 00:38:21 -0800 > From: "Ali" <cctalk at ibm51xx.net> > To: "'General Discussion: On-Topic and Off-Topic Posts'" > <cctalk at classiccmp.org> > Subject: RE: Looking for old Compaq software - COMPAQ System Manager > Facility > Message-ID: <00d501d6ef07$9cd2ab70$d6780250$@net> > Content-Type: text/plain; charset="us-ascii" > >> For a workaround: >> >> This way You get a fixed brightness and somewhat working computer. >> Now You can wait for a replacement pot and play with the computer. > So turns out the pot itself is good after further testing. Of course now the > question is why won't the brightness adjust on the machine? > > -Ali Something supposed to be connected to the pot is not connected anymore? I am guessing a) the connection to the wiper is broken somewhere, or the circuitry connected to it is broken, or b) the ground end of the pot has a broken connection to ground /Jonas

5 years, 2 months

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David Gesswein's MFM emulator on the DEC Professional

by paulkoning＠comcast.net

I just completed a set of tests of David's MFM emulator on my Pro 380. Summary: everything works right. Very impressive device. My compliments to David for an amazing piece of engineering. Details: 1. I built and tested it (rev C board) per the instructions and all that worked nicely. A few minor points in the instructions, quickly clarified by David and already updated on the web page. I used an old 2 MB BeagleBone Black (the kind that was shipped some years ago with the abandoned Angstrom distribution), that fits just fine. 2. I read the three drives I have, one RD51, two RD52 (Quantum). All worked fine. They were identified by the analysis tool as "Elektronika_85" which makes sense since that's a Pro clone. 3. On the RD52, the last cylinder cannot be read. The reason is that the DEC standard formatting tool does not format the last cylinder except on the RD50. I'm not sure why; the comments say it is "reserved for the FCT" but I don't know what that is. In any case, ignore those errors; the OS does not use that cylinder so nothing bad happens. 4. In spite of what the XHomer documentation says, Pro disks have 16 sectors per track, not 17. It may well be that the drive is physically capable of holding 17 sectors per track if you have an RQDXn controller, but the Pro format is definitely 16 sectors. And 4:1 interleaved to account for the performance issues of programmed I/O rather than DMA. 5. I set up auto-start of emulation mode using one of the files created by the disk reader. That works fine, the OS boots, identifies the drive type correctly, and runs happily. 6. I also tested creating a new empty RD52 image (i.e., 512 cylinders, 8 heads), and running a P/OS 3.0 install to that emulated disk. That works also; as Chris Zach suggested, the installer includes a low level formatter tool and invokes that automatically when it detects it is needed. 7. Poweroff data saving works nicely. I can watch the BBB keep running after I turn Pro power off, then after 5-10 seconds the BBB power light also goes off. 8. I looked at the extracted data files created by step 2: they are good block level data images of the disks. A note on testing and drive copying: at first I tried to do this using a spare Pro power supply. That does not work because that supply requires a substantial minimum current. Even with a real drive plugged in alongside the emulator, the current draw is too small and the supply shuts down almost immediately. Instead, I temporarily connected an old small PC-type power supply I had lying around (rated at 50 watts according to the label); that was plenty for the emulator and also good enough to power it along with the drive to be read. paul

5 years, 2 months

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Looking for old Compaq software - COMPAQ System Manager Facility

by matti.nummi＠hotmail.fi

For a workaround: 1. Solder any same size pot with suitable long wires to the location (if possible) 2. Adjust the brightness to Your liking 3. Remove the pot 4. Measure the resistance 5. Solder a measured value resistor where the pot was. This way You get a fixed brightness and somewhat working computer. Now You can wait for a replacement pot and play with the computer. BR Matti

5 years, 2 months

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Looking for old Compaq software - COMPAQ System Manager Facility

by cctalk＠ibm51xx.net

Hello All, I am looking for an old piece of Compaq SW. It is used to communicate with a Server Manager/R (or sometimes also known as System Manager) board. This was Compaq's first attempt at a lights-out management (LOM) board. If anyone has a copy and can share I would appreciate it! Thank you. -Ali

5 years, 2 months

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Looking for a potentiometer for restoration project

by cctalk＠ibm51xx.net

Hello All, I am looking for an EOL/no longer manufactured pot. It is a Clarostat CM46895-3 and used to adjust the back light/brightness on a Compaq Portable 486c (pictures are here: http://www.vcfed.org/forum/showthread.php?78057-Compa-Portable-486c-can-not- adjust-screen-brightness). Because of the fit and finish issues it needs to be this particular pot. If someone has one in their parts bin please drop me a line. TIA! -Ali

5 years, 2 months

1
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DEC: securing 15V pwr monitor board in H765 supply

by fritzm＠fritzm.org

Hi all, I?m reassembling an H765 supply after cleaning and repairs. It has the "newer" style 15V and power monitoring board (the one with the edge finger connector, same as used in H7420 supplies.) The board slides into a slot in a sub-chassis that also houses the power control circuitry, which small chassis later slides into, and is secured to, the larger H7420 chassis. I cannot for the life of me figure out what, if anything, secures the power monitor board to the small chassis! There don?t appear to be any conveniently placed fixtures to which to screw down the board, and I haven?t been able to inform myself by pondering the various engineering diagrams, IPB?s, nor the pile of remaining fastening hardware... When I test-fit everything in the larger chassis, the unsecured board is held captive only by the grace of the surrounding wiring harness and by some small clearance issues with the large cap on the board. This doesn't seem satisfactory; as part of something like an 11/34 on tilt slides, it would seem to bang around a bit in there if left loose like that. Am I missing something? Puzzled... --FritzM.

5 years, 2 months

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Quick journey to the basement

by cz＠alembic.crystel.com

Found more stuff. 4 Perq boards, the HP1000, a Perq mouse and "pad", a Sun4 keyboard with 15 pin plug, and another Perq2 keyboard. Also found a weird one, a MFM drive with an adapter board on the bottom. Is the below a MFM to Shugart interface? Pics are up on the Discord server right now along with the HP1000. C

5 years, 2 months

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cctech Digest, Vol 76, Issue 16

by athornton＠gmail.com

I seem to recall that in "how to shoot yourself in the foot in various programming languages," APL is something like "There's a bang. Your foot is missing. You don't remember enough linear algebra to know how it got that way."

5 years, 2 months

1
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HP 3000 37 CPU board needed

by g-wright＠att.net

As long as where on the hp 3000 board hunt,? I have a dead 3000-37 here that needs a CPU board.? any lurking out there? ??? - Jerry

5 years, 2 months

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