[cctalk] Re: DEC Qbus/Massbus?

Not as such. The RH11 was not replicated on Q Bus because Q-Bus was made for small disks for a long time and I think DEC didn't want to undercut the sale of Unibus. That said, I have run into 11/23 systems that used RM02's with a Plessy Quniverter. Works fine enough, but only 18 bit memory

[cctalk] Re: BASIC

Hardly. The Model 100 basic had a ton of features including modem support, date/time, and so forth. Lots of programs and utilities were written in the BASIC, and games such as Heartbreaker worked perfectly. There was also a really amazing compiler that could compile basic programs to make

[cctalk] Re: Charles Stross, replay the bubble of 1995, alt history plus retrocomp

Fortunately, in the US the net wasn't run by the Post Office so the mammals were out of the bag and fruitfully multiplying long before the rest of the world caught on and started forming committees to create camel-shaped dinosaurs to perform the same functions. As a result most of those things

[cctalk] Re: Charles Stross, replay the bubble of 1995, alt history plus retrocomp

It is funny, but truth be told we dodged a massive bullet by going with the "Internet" and TCP/IP as opposed to the nightmare of AT Connect, IPX, and the blazing speeds of TWO! ISDN B channels. I was there. I remember X.400, and how NDS was going to be the directory system that bound us all

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

Oh wait, that sound? Over and over? I had a RD54 type drive that I hit with a magnet by mistake and took out the servo platter. Got that sound, over and over because the drive used servo loop positioning and couldn't find the servo track. Since you probably didn't do this, check to see if

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

It is quite possible to put a touch of watch oil on the shaft of an older drive (without opening it) to quiet the bearings and re-libricate the grease. I'm still running RD54's and RD53's without much of an issue, firing them up every few months seems to keep them happy. Same for RD51's and

[cctalk] Re: Available in Germany: PDP 11/23 Plus with two RL02 drives in a H9642 cabinet

Neat! And oddly enough I'm going to be in Brussels later this week, I wonder if I could take this home as my "checked baggage" Had one like this 30 years ago, it's a very nice design for a 23+ with RSX11M 4.0/Decnet 3.2 On 11/25/2023 3:18 AM, P Gebhardt via cctalk wrote: Hello list,

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

Try printing them in PETG: I've printed several of them for my 8/L and they equal the strength of factory switches. Even the little pins are more than strong enough. PETG does require a higher printing temperature (220c-230c) but is well worth it and a massive improvement over PLA. Chris

[cctalk] Re: PDP 11/40 power supply question

> https://vintagecomputer.net/digital/PDP11-40/PDP11-40_DC-pwr-supplies.jpg That brings up a question that's rattled around my mind: On a 745 it's rated to supply -15 volts at 10a, but it has two of the lines designated as "+15 in". Where did the +15 come from, the other supplies put out +20,

[cctalk] Re: 11/15, 11/20 systems and parts, more

Interesting. Would a DD11-PK be usable as a normal Unibus/SPC backplane for a 11/05? I do need one but I'm not sure if the PK has a true "Unibus in" on say slot 2 that I could put a jumper into from the 11/05's backplane. Anyone know? C On 10/21/2023 12:16 PM, Jon Elson via cctalk wrote: On

[cctalk] Re: gunkies.org - ultrix-11 installation example ...

Yeah, they're on my web server https://www.crystel.com/pdp/os. Use the .img ones for a Gotek, .imd ones to make floppies with teledisk or whatever it was. CZ On 10/19/2023 11:15 AM, hupfadekroua via cctalk wrote: Hello all, is there any source known how and where to get the floppy images

[cctalk] Re: PDP-8/L Is: $7900 (Was: PDP-8/L $15,000)

But more reasonable. Get down to 4k and it's interesting. C On 9/8/2023 4:12 PM, Milo Velimirović via cctalk wrote: On Sep 8, 2023, at 1:15 PM, Bill Degnan via cctalk wrote: Price change, https://www.ebay.com/itm/126067408991 Bill Still too spicy :)

[cctalk] Re: Silly question about S-100 and video monitors

Which is weird, since Radio Shack was renowned for putting schematic diagrams on so many of their products. My Flavoradio still has the schematic on it if a transistor goes bad CZ On 8/31/2023 2:48 PM, Fred Cisin via cctalk wrote: Hence the short text lines on "home" computers. . . . . .

[cctalk] Re: PDP-8/L $15,000

I'm thinking more of sharing Omnibus devices and memory. Why not C On 8/30/2023 9:04 AM, Paul Koning via cctalk wrote: On Aug 29, 2023, at 8:46 AM, Chris Zach via cctalk wrote: -BUT- That does not mean it *can't* be restored, only that $15,000 is ridiculous for a machine

[cctalk] Re: PDP-8/L $15,000

-BUT- That does not mean it *can't* be restored, only that $15,000 is ridiculous for a machine that clearly needs an expert with time and money. b True, it is a silly price. I was thinking about this on the forum: If someone offers to buy one of my fully running 8/L's for 6k I'll put in an

[cctalk] Re: PDP-8/L $15,000

Oh baloney. As long as the backplane pins are not mushed these are surprisingly easy to fix and mouse crap can be vacuumed out and cleaned off the cards and pins. The thing that drove me the most nuts was finding a backplane wire that had worn through its insualtion and shorted against

[cctalk] Re: PDP-8/L $15,000

I will say the desktop chassis thing is kind of snazzy. But man be prepared to replace a LOT of 7474 flip flops and 8 input NAND gates (they seemed to use those as drivers. Weird, but worked but put the chip under serious stress when old) On 8/28/2023 1:45 PM, Chuck Guzis via cctalk

[cctalk] Re: PDP-8/L $15,000

Aww! Looks like Mr. Mouse paid a visit. That will be fun to get running. (I'd normally sell one of mine for 6k working with Focal loaded up.  They're cute and all, but 15k? And it nice to have a spare for troubleshooting the other one if needed) CZ On 8/28/2023 2:37 PM, Bill Degnan via

[cctalk] Re: Good Inventory Program

Just use DATARIEVE. (Sometimes known as DATAHEAVE) On 8/16/2023 1:49 AM, Evan Linwood via cctalk wrote: This is almost an impossible question to answer (!) but it might be worth mentioning Pimcore. This is an open source master data management tool, meaning that it supports both schema (data

[cctalk] Re: Connecting MFM emulator as both 1st and 2nd drive in Microvax 2000?

Theoretically it could be done with only 2 motors--one spindle motor and one positioner. Probably not the best for performance, but doable. --Chuck That is exactly what they did. There is only one stepper motor that drives both heads. And one drive motor that drives both spindles.

[cctalk] Re: Old Professional/350 software, any of this out there

got was: *Trap stack push abort, PC: 14 (40)* Maybe that image is bad, too ... Ulli Am Do., 27. Juli 2023 um 00:55 Uhr schrieb Chris Zach via cctalk < cctalk@classiccmp.org>: Ok, files are up on https://www.crystel.com/pdp/os and https://www.crystel.com/pro350 MicroRSX, Ultrix11, Micro

[cctalk] Re: Old Professional/350 software, any of this out there

. Is the image set complete? I thought that RSX4-I.IMG <https://www.crystel.com/pdp/os/RSX4-I.IMG> was the one (with an I instead of a 1), but all I got was: *Trap stack push abort, PC: 14 (40)* Maybe that image is bad, too ... Ulli Am Do., 27. Juli 2023 um 00:55 Uhr schrieb Chris

[cctalk] Re: Old Professional/350 software, any of this out there

board? It's the same size and the board fits. Maybe it had more space for 256kb of memory chips for video RAM? C On 7/29/2023 1:36 PM, Paul Koning wrote: On Jul 29, 2023, at 12:45 PM, Chris Zach via cctalk wrote: Answering my own question: Yes it does work. My Pro/380 now sees 320kw

[cctalk] Re: Old Professional/350 software, any of this out there

Possible. I see that Xhomer includes a version of RT11, and when I looked at that I saw that the .MAC files for the DZ and whatever the disk is (DY?) drivers appear to be there. So it might not be impossible to write the drivers in M+ based on that. Maybe. On 7/29/2023 11:00 AM, Lee Gleason

[cctalk] Re: Old Professional/350 software, any of this out there

boards can be upgraded from 64k chips to 256k chips. Probably would require reprogramming the ROM as well on the board. Hm. On 7/29/2023 12:01 PM, Chris Zach via cctalk wrote: Meantime a question: The pro/350 has two memory daughter cards on the board. The Pro/380 appears to have a spot

[cctalk] Re: Old Professional/350 software, any of this out there

Meantime a question: The pro/350 has two memory daughter cards on the board. The Pro/380 appears to have a spot on the motherboard that takes the same size card. Can one use a Pro/350 internal memory board (not CTI) on the Pro/380 motherboard? Wondering before I plug this in On 7/29/2023

[cctalk] Well, SPSS for RSX is sorta up.

Copied all the files onto my Gotek, it's SO EASY to just turn a dial to select a disk! Anyway, loaded all the files, but when I try to run them it says it's missing PROF77 Common. My guess is that's the same block as F77OTS, but how does one load a common block with a different name? I

[cctalk] Re: Old Professional/350 software, any of this out there

This is why I put them up in .imd (ImageDisk, it works on DOS) and .img (image). Oddly enough I went to install SPSS/X on xHomer and it blew the emulator sky high (crashed the "Pro"). Then I put it on my real 380 running 3.2. It installed but when I ran it the program displayed the opening

[cctalk] Re: Old Professional/350 software, any of this out there

t. Why in the name of heaven would SIMH not support proper disk formats? C On 7/27/2023 11:12 AM, Paul Koning wrote: On Jul 27, 2023, at 11:08 AM, Chris Zach via cctalk wrote: Yah. One problem with me is that I have the detail skills of a gopher. So I'm not the best person to try and add prop

[cctalk] Cool program found for Pro/350

Over the weekend I picked up a Pro/350 from the System Source swap. The good news is I traded something of similar size for it, and more importantly I didn't bring anything else home :-) Anyway, it's a pretty basic system with 10mb ST412 drive, 128k memory on board, 256kb memory expansion,

[cctalk] Re: Old Professional/350 software, any of this out there

tors 27 juli 2023 kl 00:55 skrev Chris Zach via cctalk < cctalk@classiccmp.org>: Ok, files are up on https://www.crystel.com/pdp/os and https://www.crystel.com/pro350 Would you mind adding some kind of metadata to the files, please! A simple photo of the diskette with the same filenam

[cctalk] Re: Old Professional/350 software, any of this out there

Fixed. I think it's Ultrix 11, MicroRSTS/E 2.1 and MicroRSX 2.1 Chris On 7/26/2023 8:43 PM, Paul Koning wrote: On Jul 26, 2023, at 6:54 PM, Chris Zach via cctalk wrote: Ok, files are up on https://www.crystel.com/pdp/os and https://www.crystel.com/pro350 MicroRSX, Ultrix11, MicroRSTS/E

[cctalk] Re: Old Professional/350 software, any of this out there

Ok, files are up on https://www.crystel.com/pdp/os and https://www.crystel.com/pro350 MicroRSX, Ultrix11, MicroRSTS/E, and um spss On 7/26/2023 1:51 PM, Mark Matlock via cctalk wrote: Chris, I would be interested in getting a copy of the SSPS/X software for POS. I have a manual for

[cctalk] Re: Old Professional/350 software, any of this out there

Hm. I never thought of running it on RSX11M+. I think it used the Pro's video for graphs and could do amazing bitmaps on the LA50, but I'll bet it just uses VT125/131 codes to talk to the display as opposed to accessing the Pro's bitmap registers. I'll see if I can read it in now. On

[cctalk] Old Professional/350 software, any of this out there

Starting to go through my boxes of POS stuff. I know of course that 3.2 is out there (minus the Pro/Communications option which has a bad disk in the distro) however are these disks out there now? Pro/Venix 1.0 on floppies POS V2.0a on floppies POS version 1.5 (with test diskette, maintenance

[cctalk] Re: xerox viewboard

It all seems to be there. Bruce's 12, 8, big Cray things are nicely displayed. CZ On 7/22/2023 12:42 AM, r.stricklin via cctalk wrote: Yes, and I reached out to System Source. They responded, but I failed to achieve any conclusive result. ok bear. On Jul 21, 2023, at 6:53 PM, Sellam

[cctalk] Re: VCF and System Source Computer Museum swap meet this weekend

Yep, I'm going to the swapfest early Saturday. Bringing a bunch of things I just don't need for sale including: pdp8/e AF01 (*Negibus A/D converter, 64 channels) SGI Indigo High Impact Mac Plus Dec BA11-S with power supply (working) Dec backplanes Lots of Q Bus cards Some Unibus cards My

[cctalk] Re: VCF and System Source Computer Museum swap meet this weekend

Yep, I'm going to the swapfest early Saturday. Bringing a bunch of things I just don't need for sale including: pdp8/e AF01 (*Negibus A/D converter, 64 channels) SGI Indigo High Impact Mac Plus Dec BA11-S with power supply (working) Dec backplanes Lots of Q Bus cards Some Unibus cards My

[cctalk] Oh Q-Bus, you can be a fickle mistress at times....

So I had a fellow list member show up and trade me an AUI cable for reading some of his old RX01/02 disks to see if there was anything on them. Not a big deal, TALOS (my 11/83) has pretty much everything: 11/83 CPU board with FPJ11 MSV11-QD card with 4mb memory (lots o' disk cache) RXV21 plus

[cctalk] Re: Found the DSM orange manual

programmer, I would definitely be interested… A former boss lent me his copy once. I should have scanned it. Tommy Chang Sent from my iPhone On Jun 28, 2023, at 2:37 PM, Chris Zach via cctalk wrote: Well, it's huge. As in totally fills a large DEC binder. Seems to have the following

[cctalk] Re: Found the DSM orange manual

programmer, I would definitely be interested… A former boss lent me his copy once. I should have scanned it. Tommy Chang Sent from my iPhone On Jun 28, 2023, at 2:37 PM, Chris Zach via cctalk wrote: Well, it's huge. As in totally fills a large DEC binder. Seems to have the following

[cctalk] Re: Any RSX-11 fans able to identify file types?

Don't know the 8600.  Wasn't the RL02 on the 11/730 actually connected to a PDP-11 that functioned as a console?  Surely no version of VMS ever fit on a 10M disk, did it? Nope, there was a big "multifunction" card that ran the RM80 and RL02 drive. I think it bypassed the Unibus for data

[cctalk] Re: Found the DSM orange manual

than mine (Pixma 870)? CZ On 6/28/2023 5:29 PM, Paul Koning wrote: On Jun 28, 2023, at 5:21 PM, Chris Zach via cctalk wrote: While looking for my RSX11 DECNET manual (because the online version doesn't have any examples of commands which is why you look in the manual in the first place) I

[cctalk] Found the DSM orange manual

While looking for my RSX11 DECNET manual (because the online version doesn't have any examples of commands which is why you look in the manual in the first place) I found a copy of the DSM binder AA-K676B-TK and ilk. Is this online or does anyone else have it? CZ

[cctalk] Re: Need AUI cable

Meanwhile, on AUI cables: the difficulty with plugging a transceiver into the Pro is that the Pro uses regular nuts, for a plug that secures by screws. That's non-standard, since the AUI spec calls for the "turret" and sliding latch type. So a standard AUI cable wouldn't be a real cure

[cctalk] Need AUI cable

Anyone in MD got an AUI cable (few feet long) I can steal so I don't have to remove the bolts from the Pro/380's Ethernet socket or the pins on my 10bt ethernet MAU? Friendly note: If you try to boot a Pro/380 running POS 3.2 with Decnet installed and don't have the loopback plug the system

[cctalk] Re: Any RSX-11 fans able to identify file types?

More interesting is that All-In-One for the VAX comes on RX02 and RL02 disks. I wasn't aware that the VAX or VMS even supported RX or RL disks. Sure. The 8600 and 11/730 used an RL02 as the boot/startup media. RX02 is a bit odd, but I could see that being supported on a Unibus adapter

[cctalk] Re: Any RSX-11 fans able to identify file types?

Yes, the console floppy on an 11/780 was an RX02, and VMS supported "virtualizing" it through the LSI-11 console computer so you could mount it just like any other device. I thought it was an RX01 on an 11/03? It's an RX02? CZ Jon

[cctalk] Need AUI cable

Anyone in MD got an AUI cable (few feet long) I can steal so I don't have to remove the bolts from the Pro/380's Ethernet socket or the pins on my 10bt ethernet MAU? Friendly note: If you try to boot a Pro/380 running POS 3.2 with Decnet installed and don't have the loopback plug the system

[cctalk] Re: Any RSX-11 fans able to identify file types?

> Different thing, I believe. Gotcha. I'd find it funny and perfectly fitting if DEC had two departments working on the same concept and coming up with completely different, but equally oddball solutions. There's A-to-Z, which aimed to be something similar but small enough to run on a

[cctalk] Re: Any RSX-11 fans able to identify file types?

Sounds like P/OS for the Professional. I've heard of All-in-One, but didn't realize they built something that was as bad an annoying as P/OS. I wonder if it included Prose as a word processor. Speaking of which, I wonder if those apps would run on a regular pdp11/83 running RSX111M+. Maybe

[cctalk] Re: PCs Limited XT

a bit to figure out was looking for an RPL boot server, not BOOTP/TFTP. On Wed, Jun 14, 2023 at 9:11 PM Chris Zach via cctalk wrote: Sitting here paging in old stuff from my brain. I'll bet you have an ArcNet card, and on the card it has a BIOS bootloader that was designed to do a BOOTP load of a DOS fr

[cctalk] Re: PCs Limited XT

Sitting here paging in old stuff from my brain. I'll bet you have an ArcNet card, and on the card it has a BIOS bootloader that was designed to do a BOOTP load of a DOS from a Netware or 3Com server. Pull the card and it will probably boot normally off the floppy. CZ On 6/14/2023 7:16 PM,

[cctalk] Re: PCs Limited XT

I used to use (and service) PC Limited stuff back in the 90's at Macro. I don't remember a turbo board, just a normal XT system board. Pop the case open and check. If I recall PC Limited and Dell (what they became) came with call in service from Xerox. Maybe give them a call? ;-) CZ On

[cctalk] Re: Disk-pack-based drives at LCM

Last time I worked with large pack drives was the three RM03's in 2003 or so before I sent AI to LCM. One of the drives had dirty heads and I cleaned them with isopropyl. Mounted a scratch pack and it exploded. Other two drives were clean and worked fine before powering down, parking, and

[cctalk] Re: Getting floppy images to/from real floppy disks.

On 5/22/2023 11:53 AM, Sellam Abraham via cctalk wrote: I learned a long time ago that it's a waste of time to trying to help someone who, instead of focusing on solutions, just comes up with endless reasons why your suggestions won't work. We used to call this "Asks for advice, argues with

[cctalk] Re: Using Teledisk 2.16 to read old RX50 images

Thanks everyone for the comments. I managed to put up the IMD (not the IMG images as I am a bit too busy to convert) for MicroRSTS and MicroRSX up on my web site at: https://www.crystel.com/pdp/os Give them a try on an emulator and see if they load up the OS properly. Have to go back to

[cctalk] Using Teledisk 2.16 to read old RX50 images

Hi! Well, after a good bit of work I have finally gotten my Compaq XE4000 up and running with Windows 98, the BIOS all set, a new battery, and of course a 1.2mb 5.25 floppy that seems to be working. I'd now like to start sucking the rare images I have here on RX50 into a TD0 format which

[cctalk] Re: HP9825A for sale

It's not like we're talking about a barn find covered in pidgeon poop. You'd be amazed at how much a barn find covered in pidgeon poop goes for If it works, if it's got all the bits, and a good story then sure, the sky's the limit

[cctalk] Re: TREK7 is back! - TREK7 FORTRAN Multi-User Game (PDP-10/VAX) Revived

Nice! I always wondered if this would run on a split I/D pdp11. Time to check... C On 3/31/2023 8:51 AM, Hans-Ulrich Hölscher via cctalk wrote: The Star Trek simulation game TREK7 was written in FORTRAN by Donald M. Ecclestone in the early 70ties for the PDP-10. The game was ported to VAX

[cctalk] Re: Need a 1.2mb 5.25 floppy

from the replies that I have read that nobody has offered drives. If you are still interested, I can look up the models of the units that I still have and from which I can part. Best, -John -Original Message- From: Chris Zach via cctalk Sent: Sunday, 26 February, 2023 19:42 To: C

[cctalk] Re: Nuking an MFM drive with a magnet, format/servo gone?

* Mr. Drill Press enter the chat * Mrs. Dectape laughs at your attempts :-) C :) g.

[cctalk] Re: Nuking an MFM drive with a magnet, format/servo gone?

Speaking from experience with an old RD54, yep. Put a magnet on the outside case towards the bottom, spin the drive up and it's gone forever. On 3/23/2023 12:22 PM, Daniel Daigle via cctalk wrote: Old MFM/RLL drives with stepper positioners generally have no servo. The same can't be said of

[cctalk] Re: Knockoffs, was: Low cost logic analyzer

I have been thinking about this discussion: I bought one of the cheap 8 channel units on Ebay and downloaded the Salee software. It works extremely well for debugging logic issues on my pdp8/L's but it has a few issues: The buffer size is miniscule, and I get data overruns at higher sample

[cctalk] Re: NextStep/Intel, 486's and Pentium overdrive, thoughts.

That is a good question. I seem to recall that when it was compiled for Next hardware that it used the DSP by default, but when compiled for other platforms it used their libraries. My guess is the Intel library used floating point. It fits in with other narratives about the Pentium chip, one

[cctalk] Speaking of tapes....

I noticed in a Dectape 2 document that the tape drives are just DC100 models. Are there any specific documents on what kinds of signals should be coming out or into them? I'd like to fix this TU58. CZ On 3/7/2023 10:07 PM, Chuck Guzis via cctalk wrote: On 3/7/23 17:32, Paul Koning wrote:

[cctalk] Re: Using Flashfloppies on Professional 350 and 380--SOLVED

I can do with that. This thing could do a lot more with 3.2 than it could with 2.0 software. Very interesting... CZ On 3/5/2023 10:24 AM, Chris Zach via cctalk wrote: On the Pro, the software sees a fairly traditional CSR set with disk address registers (sector and track).  So

[cctalk] Re: Using Flashfloppies on Professional 350 and 380--SOLVED

On the Pro, the software sees a fairly traditional CSR set with disk address registers (sector and track). So an assumption like the one you worry about would be in the controller, not the OS. If it works at all then that would say the controller doesn't make that assumption. Yup, things

[cctalk] Re: Using Flashfloppies on Professional 350 and 380--SOLVED

patching, and cut down on local disk space needs. In the early 1980's. *sigh* DEC totally blew it, didn't they. CZ On 3/5/2023 12:07 AM, Warner Losh wrote: This is very cool! Glad to see you got it working... On Sat, Mar 4, 2023 at 9:06 PM Chris Zach via cctalk mailto:cctalk@classiccmp.or

[cctalk] Using Flashfloppies on Professional 350 and 380--SOLVED

Ok, after banging my head against the wall for awhile this evening it looks like I have two flashfloppy drives working on my Pro/380. Well enough to boot from and install 3.2 options. The keys are these: 1) Use a flat 34 pin ribbon cable with three plugs in a straight line. I tried using one

[cctalk] NextStep/Intel, 486's and Pentium overdrive, thoughts.

As part of fixing the Pro/380 I dug out and decided to get running my two Intel systems. These are Compaq Deskpro/XE systems. One is a 4100 which has an Intel 486/100 (25mhz, quad clock), the other I upgraded with a Pentium P524T overdrive chip at 83mhz (33mhz external clock). The P524T was

[cctalk] Using Gotek's to emulate RX50's.

Seems like it should be simple, but it is not. I have a pair of Goteks with the Flaashfloppy code and each one has a USB with 400k RX50 images on it. Both are set to drive 2, and a standard 40 pin floppy crossover cable allows me to emulate a pair of drives. Now, I want to replace the RX50

[cctalk] Need a 1.2mb 5.25 floppy

Oi. So after finally getting things going I started copying the Pro/380 OS files to a bunch of 1.2mb floppies. Great. However after a bit I started getting errors, and found that the disks were getting gouges in the tracks. Sure enough disassembly of my 1.2mb Teac showed that debris had

[cctalk] Better way to extract these TD0 images for P/OS.

Ok, so after pouting for awhile after destroying my only Teac 1.2mb 5.25 drive (old floppies are garbage) I sat for awhile and thought about this whole issue. The goal is simple: Install P/OS 3.2 on my Pro/380 but doing 21 floppies for the base OS, another 20 or so for the Toolkit, and God

[cctalk] Re: Getting QRST files onto a floppy (sigh)

Hi Henry! You wanted a SETUP disk for a Deskpro/XE system, right?  Like SP1363 as listed here https://www.vogons.org/viewtopic.php?t=76542 ?  I was able to do this in Dosbox-X no problem: mount the local directory with

[cctalk] Re: Getting QRST files onto a floppy (sigh)

, at 16:23, Wayne S wrote: Yep. I can probably burn a floppy for you if you put the programs and data software somewhere i can get to it. I’ll try and then you can tell me where to send the floppies. Sent from my iPhone On Feb 25, 2023, at 16:17, Chris Zach via cctalk wrote:  I read

[cctalk] Re: Getting QRST files onto a floppy (sigh)

, Wayne S wrote: Yep. I can probably burn a floppy for you if you put the programs and data software somewhere i can get to it. I’ll try and then you can tell me where to send the floppies. Sent from my iPhone On Feb 25, 2023, at 16:17, Chris Zach via cctalk wrote:  I read that Qrst was just

[cctalk] Re: Getting QRST files onto a floppy (sigh)

ng to it. We'll see. This is a fun little adventure. Wish I could figure out where the heck my Toshiba power supply brick is... C On 2/26/2023 11:15 AM, Paul Koning wrote: On Feb 25, 2023, at 5:11 PM, Chris Zach via cctalk wrote: So I'm working on restoring a Compaq DeskPro/XE syste

[cctalk] Re: Getting QRST files onto a floppy (sigh)

Win 10 comes with cmd so do you need to use dosbox? Windows 10 does not have a 16 bit subsystem anymore. Doesn't work. As for creating a DOS bootable disk, I think the problem is that the low level disk access QRST wants is not availible on a USB floppy drive. So you need a "real" floppy and

[cctalk] Re: Getting QRST files onto a floppy (sigh)

I read that Qrst was just a file format. To quote The QRST disc image format was used by Compaq to distribute disk images of diagnostic software. The file QRST.EXE or QRST5.EXE would be supplied with the disc images to write them to a floppy drive. -So do you have the QRST programs available?

[cctalk] Getting QRST files onto a floppy (sigh)

So I'm working on restoring a Compaq DeskPro/XE system to allow me to use the 5.25 floppy to copy files from my 3.5 floppies which will come from my Windows 10 system so that I can extract on the Deskpro/XE using teledisk the .td0 files that make up a RX50 floppy disk set so I can load POS 3.2

[cctalk] Re: Stuff to go or it's off to the dumpster

Ok good. I am working through the replies, they will not go into the dumpster. C On 2/25/2023 3:26 PM, Noel Chiappa via cctalk wrote: > From: Chris Zach > So these go *into* RK06 or 07 drives? Yes; per the "Field Guide to UNIBUS and QBUS Modules". Also:

[cctalk] Using teledisk images on a Gotek

Question: I'm starting to work on the concept of installing POS 3.2 on my Pro380 and rather than burning a lot of floppies I'd rather just use my Gotek with FlashFloppy. First problem is this: The images are in lzh format, and when uncompressed are TD0 format. Which I think is teledisk, is

[cctalk] Re: Stuff to go or it's off to the dumpster

The first two are RK06 drive modules; the last three are RK07 drive modules (info from the 1983 Option/Module list). So these go *into* RK06 or 07 drives? Interesting, these may have come with an 11/34 which had the RK611 controller (long since gone). Well if anyone has an RK06/07 reach out

[cctalk] Stuff to go or it's off to the dumpster

Hi all! Need to get rid of some things here that I am never going to use, maybe someone else will: M7705 M7706 M7906 M7907 M7908 Quad boards, I think they came from an RK06/07. Maybe the boards from an RK611? Regardless, I don't need them, they are either priceless or worthless. Make me an

[cctalk] Re: VCF East is coming up in April!

That sounds like fun, and I haven't been to a swap meet since the days of TCF in the 90's and early 2000's. Anyone want to swap an AF01 with 64 channel a/d for a BM08/L? We can meet there to save on shipping and stuff. C On 2/21/2023 11:34 AM, Andrew Diller via cctalk wrote: Please mark

[cctalk] Re: TK50/70 Repair

Side note on this: I managed to format one of these RD54's, then used the TK70 to boot up BRUSYS from tape and restore a backup of my main ESDI system TALOS. RD54's are slower than ESDI. But it does work, and now I have RSXM+ running on two systems with TK70 drives for backup and file

[cctalk] DEQNA vs DELQA bulkhead question

Working on my second pdp11/73 here and trying to get Ethernet working with a DEQNA instead of a Delqa. I'm using a DELQA card to AUI connector, the board passes diagnostics without the loopback, but when I try to bring it up I get: Event type 5.14, Send failed Occurred 17-FEB-2023 22:15:05

[cctalk] Matrox Q bus graphics card, any use

Going through my stuff I found a Matrox QRGB 6/64-4 card which seems to be a 512x512x16 color video array for Q bus systems. Did any software ever support this thing, and does anyone want to trade it for a bean of some sort? Thanks! Chris

[cctalk] Re: TK50/70 Repair

trying. I can visualise that the sensor slots must be the correct height to give a good since wave. thanks Nigel On 2023-02-14 09:58, Chris Zach via cctalk wrote: Looking at my notes I found a similar situation: Tape would not load properly. Turned the rear nut 1/2 turn in, and it loaded

[cctalk] Re: TK50/70 Repair

method of setting the capstain height out there somewhere, but this "barn door" method works for me as well. C On 2/13/2023 9:31 PM, Chris Zach via cctalk wrote: No I don't. I just lubricate them. Odd though, did you turn the nut down the same number of turns and is the capstai

[cctalk] Re: TK50/70 Repair

have cleaned out the sensor wheel but still the same problem - but when i give the idler wheel a little push it at least goes to ready. cheers, Nigel On 2023-02-08 10:49, Chris Zach via cctalk wrote: I think it's metal, but using a bit of good old soapy water and a rinse/dry should be fine

[cctalk] Re: Store with "vintage" computers and parts

Veronica CZ On 2/9/2023 8:37 PM, Tom Hunter via cctalk wrote: Ok as Google search is increasingly failing us, what other search engine should I use? Tom On Fri, 10 Feb 2023, 3:28 am Angel M Alganza via cctalk, < cctalk@classiccmp.org> wrote: On 2023-02-09 15:31, Eric Moore via cctalk

[cctalk] Re: TK50/70 Repair

I think it's metal, but using a bit of good old soapy water and a rinse/dry should be fine. Remember that there is a little window screen part there to ensure the optical system only sees the slit right under it, don't forget to install it as well. Glad to hear there is progress. Let us know

[cctalk] Re: TK50/70 Repair

Hi Nigel! I have a fair bit of experience with TK's, including the TK50 and 70. I like them, they're quick units (with the TQK70 controller they can stream well), and they look really nice in a BA23 chassis. Optical sensors can be dirty, but the biggest problem I have seen is in the

[cctalk] Re: RQDX3's: Lessons learned.

Thank you, good information. Found this from Midwest systems. They were a solid reseller back in the 1980's and this is probably the best first person vendor supported info on jumper settings for RQDX3's. READ BEFORE INSTALLING DISK DRIVE 2/89

[cctalk] Re: Nuking an MFM drive with a magnet, format/servo gone?

. If it was a permanent magnet then it might indeed be servo data which has been erased. Either way I expect you need a very strong magnetic field to erase a hard drive from the outside. Tom On Sat, 4 Feb 2023, 12:40 am Chris Zach via cctalk, wrote: Question: I just used a strong magnet to wipe an old

[cctalk] Re: Formatting and using RQDX3's and 2190's.

Running a non-reformatted disk through Dave G's mfm device got me the following after running a mfm_write to the whole disk followed by an mfm_read: Expected 312120 sectors got 311766 good sectors, 282 bad header, 72 bad data 0 sectors marked bad or spare 49 sectors corrected with ECC. Max

[cctalk] Re: Formatting and using RQDX3's and 2190's.

Wow, this is interesting Dave. Took one of the "formatted badly" disks and did a write of your file. root@beaglebone:~/mfm# ./mfm_write --emulation RD54_A -d3 -c1224 -h15 -s 17 Board revision C detected Then a read of the disk: root@beaglebone:~/mfm# ./mfm_read --analyze -e rd.dsk Board

[cctalk] Re: Formatting and using RQDX3's and 2190's.

Yes, the no autoformat option allows me to specify RD54. C On 2/3/2023 12:14 PM, Nigel Johnson Ham via cctalk wrote: On 2023-02-03 12:09, Chris Zach via cctalk wrote: Decided to spend some time working on my 11/73 with MFM drives. Currently it has one of my RQDX3 boards (I have 3, 1

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