test-drb

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101090 discussions

by mark＠matlockfamily.com

>According to the Ref Manual, that's the one I was looking for. >Now to mount the RL on RSTS and see what it takes to build it >there. I'll let the list know how I make out in case someone >else is interested. > >bill The RL02 image is RSX Files-11, and I?m not sure if you can mount that with RSTS. I could move it to a RT-11 formatted RL02 or if your RSTS system is on HECnet I can put it where you could get it that way. I looked for the original DOS-11 formatted DEC distribution tape but can?t find it at this time. Let me know if you need anything. Mark

6 years, 1 month

Identifying Machine for DEC Memory

by robert.jarratt＠ntlworld.com

I mistakenly bought some memory thinking it was for a VAXstation 4000 VLC. It turns out that it isn't. It physically fits a VAXstation 4000 Model 60, but putting it in that machine the machine fails to power up. The part number is 50-19464-02, and I am unable to identify what machine it works in. Can anyone tell me where to find out? Thanks Rob

6 years, 1 month

ISO: Cipher F880 tape drive, Fujitsu Eagle disk drive

by derschjo＠gmail.com

I'm working on restoring an LMI Lambda, which is missing both its tape drive and its disk drive. If anyone has a Cipher F880 9-track drive or a Fujitsu Eagle SMD drive, drop me a line. Be nice if they were in working condition, but so long as they're repairable I can work with 'em. Thanks! Josh

6 years, 1 month

FYI: ACM library opened

by paulkoning＠comcast.net

This might be of interest to many of the people on the list. paul > Begin forwarded message: > > >> Also, ACM has currently opened up all of its digital archives during these pandemic times, ... https://dl.acm.org/action/doSearch

6 years, 1 month

Monroe 7860

by wcn440＠gmail.com

I know this doesn't count as a general purpose computer, but does anybody have detailed technical information about the Monroe 7860 business calculator/printer? I think it was produced in the early 1980's. Specifically, I'm looking for information about the rom OS for this machine. e.g. are there more built-in commands like "dir". Maybe, is there a basic interpreter I can get at? On the hardware side, does anybody know about the mag stripe paper that the machine is supposed to work with? It appears to store user data on the mag stripe on the paper that it prints on...interesting idea, although limited. Thanks. Bill Newman

6 years, 1 month

VAX/Smalltalk-80?

by commodorejohn＠gmail.com

Just in the middle of getting a fresh OpenVMS install set up on my VAXStation (the original having been done years ago when I barely had any idea what I was doing,) and looking through various repositories for interesting software to put on there, and I got to thinking about something I recalled reading about a few years back. I know from the book "Smalltalk-80: Bits of History, Words of Advice" - http://sdmeta.gforge.inria.fr/FreeBooks/BitsOfHistory/BitsOfHistory.pdf - that, back when, there were two implementations of Smalltalk-80 for VAXen - the first was Unix-based, done by an independent research group, while the second ran under VMS and was actually developed within DEC. This version - VAX/Smalltalk-80 - was headed up by Stoney Ballard and Stephen Shirron; anybody know if there's a surviving copy out there, if it was ever available outside DEC to begin with?

6 years, 1 month

REL APL-11

by mark＠matlockfamily.com

Date: Mon, 30 Mar 2020 10:58:46 -0400 > From: Bill Gunshannon <bill.gunshannon at hotmail.com <mailto:bill.gunshannon at hotmail.com>> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org <mailto:cctalk at classiccmp.org>> > Subject: APL-11 > Message-ID: > <MWHPR22MB0878D888143DFB8F78B81AE2EDCB0 at MWHPR22MB0878.namprd22.prod.outlook.com <mailto:MWHPR22MB0878D888143DFB8F78B81AE2EDCB0 at MWHPR22MB0878.namprd22.prod.outlook.com>> > > Content-Type: text/plain; charset=utf-8; format=flowed > > > Haven't given up on DIBOL. May try installing the RT-11 version and > see if it runs. > > But now another language of interest has reared its ugly head. :-) > > Anybody have an image of the tape for APL-11? Manual claims it > runs on all of the PDP-11 OSes and it is another language from > my past that I haven't touched (other than to read some programs > out of curiosity) in more than two decades. Bill, I have the APL-11 V2.1 source files on a RL02 disk image. I will make it available at http://www.rsx11m.com/apl11.zip <http://www.rsx11m.com/apl11.zip> Once you mount the disk image with Simh, the are two ready to run task images that will run under RSX11M or M+ In [201,200]APL6OK.TSK and APL7OK.TSK that are the REAL*4 and REAL*8 versions of APL-11. On the disk are the Original .MAC sources as well as files from a RSX SIG tape that modified APL-11 for I/D under RSX11M+ that increased The workspace (.BXWA from ~30000 to ~60000 bytes). It also contains a character set for Vt220 for the APL character set. When you install the APL task experiment with the /INC to maximize the available workspace, On my system, I can INS APL6.TSK/INC=37000 to max the workspace for the single precision version. Also, the scanned APL-11 reference manual can be downloaded at http://www.rsx11m.com/APL-11-Ref-Man.pdf <http://www.rsx11m.com/APL-11-Ref-Man.pdf> and the APL11 installation guide at http://www.rsx11m.com/APL11ins.pdf <http://www.rsx11m.com/APL11ins.pdf> The RSX SIG files that have the info to change APL-11 to an I/D RSX11M+ task are at [370,360] on the RL02 disk. I remember having this work back in the mid-1980s butI have not been able to get it to work today. If I link it with ODT it seems to blow up when the first overlay is loaded. If anyone could help with that I?d really appreciate it! Best, Mark > > I have the source to something called APL-11 for Unix but it is > not the same thing. Actually, not even close. :-) > > Would love to see a few pointers. > > Oh, and in case anyone is curious about my endeavors.... > The SIMH system I am using now is based on the 11/70 and was built > with only 2M of memory. Why you would do that under SIMH where there > is really no memory constraint at all, I can not fathom. I used to > have a bunch of 11/44's and that has been my favorite since my original > 11/24 system died long, long ago./ I am going to configure a SIMH > System using the 11/44 as my model and then reinstall everything in > order to have a really good system for playing with this stuff. > > Sure wish there was a way to find some of the third party stuff from > the sourcebooks. A lot of nice software that should have been saved > for historical reasons, if nothing else, has been lost. > > bill

6 years, 1 month

Power Supply Recap

by david＠thecoolbears.org

There's been a lot of discussion of late about replacing power supply capacitors in DEC power supplies. I have a BA123 and I believe that it uses an H7260 power supply. I feel like it might be a good idea to replace the capacitors before a disaster occurs. I haven't been able to find a schematic for the H7260 and I'm wondering which/how many caps need to be replaced. Does anyone know what specific part# to replace them with? I'd prefer to purchase the replacements before I dig in to the machine, that way I don't have to remove the power supply twice. I also own a BA23. Does anyone know if that power supply uses the same caps as the H7260 and how many are required for that supply?

6 years, 1 month

H7874 power supply

by bob＠jfcl.com

Does anybody have a maintenance print or service manual for the DEC H7874? This is the power supply used in the BA4xx and R400x cabinets. As you might guess, I have one that tries to power up but shuts down after a second. Probably a bad capacitor (or several), but this thing is ridiculously complicated and not all that easy to disassemble, either. I'd like to be able to trouble shoot it rather than just firing the proverbial parts cannon at it. FWIW, none of the electrolytic (of which there are many) have obviously failed - no leaking, no bulges, etc. Of course, that proves fairly little. Thanks, Bob Armstrong

6 years, 1 month

APL-11

by mark＠matlockfamily.com

>Problem with that is all the files get jumbled into one directory >and I am sure the build will want them in the right proj,uid locations >in order to work. I am thinking a backup tape may do the job. SPD's >seem to say that later versions of RSX and RSTS had compatible BACKUP >formats. We'll see. If that don't work there is always kermit. :-) >It must be possible because the installation manual says the >installation tape works for all four PDP-11 OSes. Bill, I?ve looked extensively to see if I can find the original distribution tape image and can?t find it. At one point DEC donated the APL-11 to DECUS and I think that is when I got it back in 1984 or so. The files I have include the Macro-11 source code which as near as I can tell was not on the DEC distribution when it was a layered product. I now think that the copy of APL-11 I have must have come from a restored backup tape from my old system. In the DEC distribution, it was a DOS-11 tape which could be read by all the PDP-11 OSes as you say. I just attempted to create a DOS-11 tape similar to the DEC distribution, but when I try to run the installation against it I get a task build of APL that doesn?t work. It immediately exits and I think is due to some differences between the auto overlay code in RSX11M+ V4.6 and the V2.1 M+ that I used to have. I added the .MAC files and .CMD files (for assembly, and linking) to the tape and make it available at: http://www.rsx11m.com/apl11.tap <http://www.rsx11m.com/apl11.tap> Let me know if that works for you. It may build under RSTS fine. A backup plan to make it available is that also on the same web site are two disk images for the PiDP-11/70 folks that is a complete RSX11M+ V4.6 ready to run under Simh. On the DU1 disk image in [201,50] and [201,200] are all the APL-11 files I have. That system also installs a working APL-11 for RSX. Mark

6 years, 1 month

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