test-drb

test-drb@ccmp.vtda.org

101090 discussions

by mark＠matlockfamily.com

Bill, The APL-11 files on DECUS RSX85A are not a complete distribution but a modified version that was intended to run under I/D on M+. 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 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 and the APL11 installation guide at http://www.rsx11m.com/APL11ins.pdf The RSX SIG files that have the info to change APL-11 to an I/D RSX11M+ task from RSX85A are also at [370,360] on the RL02 disk. I remember having this work back in the mid-1980s but I 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

6 years, 1 month

PDP-8 Straight 8 restoration

by brendan＠mcneill.co.nz

Here in NZ and around the world many of us are in lockdown and spending more time on our computers, if that were possible. I have just completed the restoration of a PDP-8 Straight 8 which I believe is the only one in New Zealand. You can view the restoration story and find appropriate resources here: https://pdp-8.nz <https://pdp-8.nz/> While it plays Chess, it would be great if someone wanted to write (say) a Prime Number Generator, or some other application and email it to me off list. I have Focal-69 and can probably source other languages for this wonderful old machine with 4K of memory. --------------//---------------- brendan at mcneill.co.nz +64 21 881 883

6 years, 1 month

APL-11

by bill.gunshannon＠hotmail.com

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. 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

LegacyOS.org

by peters-cctech＠techwiz.ca

I just stumbled over https://legacyos.org/ and checking here for what you say about it only to find out that it seems like you missed it. Have you all missed it or is it just not interesting ? -- ------------------------------------------------------------------- Techwiz, Peter Sjoberg GPG key (42DDDDDD) on keyserver & homepage Key fingerprint = EB81 3135 1636 576A DA83 826B 2455 0E88 42DD DDDD Homepage: http://www.techwiz.ca/~peters Pictures: http://www.flickr.com/photos/henahadu/ Enigma: http://meinEnigma.com

6 years, 1 month

Split Ceramic Disk Capacitor

by robert.jarratt＠ntlworld.com

Since I am forced to stay at home more than I would like I though I would check some more PSUs. One I wanted to check was the H7109-C from one of my VAXstation 4000 VLC machines. I found a leaked capacitor and some other high ESR ones, so I will replace those. However, I also noticed a ceramic disk capacitor that appears to be split all around the edge. Is that a known failure mode? Regards Rob

6 years, 1 month

help needed: Document scan of ISS Sperry Univac Driver Exerciser avalaible for bitsavers upload

by p.gebhardt＠ymail.com

Hello list, I have a scan of a manual with schematics for a ?ISS Sperry Univac Driver Exerciser for 7330 and 843x type of disk drives that was kindly scanned and provided to me by Mark from the Computer History Archivies Project, since he and myself happen to come accross such exercisers. I contacted two times Al via email for access credentials to upload the document as I did in the past years for numerous scans, but I never got an answer. He is probably very busy during the last months. In case anybody has access for uploading documents on this list, can you contact me so that we can make this document available to everybody? Best regards, Pierre ----------------------------------------------------------------------------- http://www.digitalheritage.de

6 years, 1 month

DIBOL and RPG for RSTS

by bill.gunshannon＠hotmail.com

Does anyone have a .tap image of a DIBOL install tape for RSTS? And while I am at it, was there ever RPG for RSTS? I am so bored I have decided to really load up a SIMH system and just live in the past for a while. I have Fortran-IV, Fortran-77, COBOL-81 and C installed now as well as BASIC and MACRO. But I haven't had the chance to do any DIBOL or RPG for quite some time and would love to try them again. bill

6 years, 1 month

Unable to download Dave Dunfield's ImageDisk

by dave.dunfield＠gmail.com

>Patrick Finnegan pat at vax11.net Tue Mar 24 18:14:05 CDT 2020 > >It looks like the magic that updates the 5-digit number in the URL doesn't >work after the classiccmp.org recovery. Try: >http://www.classiccmp.org/dunfield/img54306/imd118.zip > >The rest of the things should be in the same directory. >>On Tue, Mar 24, 2020 at 1:47 PM Christian Groessler >> Hi, >> >> the link on http://www.classiccmp.org/dunfield/img/index.htm for >> "ImageDisk 1.18" doesn't work. Apparently most (or all) links on this >> page don't work. The "magic" is me, it has nothing to do with the classiccmo recovery. The links are something I update manually from time to time, and I've recently updated some pages to correct links to my now expired commercial site, and failed to amend these with the current transient page. Should be fixed now - may have to refresh your browser if It cached the bad links. Dave

6 years, 1 month

Fonts for Dataproducts printers?

by rdbrown0au＠gmail.com

In the "Dataproducts (300/600 LPM) Line Printers Maintenance Guide" (1984) at (23Mb) https://www.wang2200.org/docs/fiche/742-0432.MNL.2273LinePrinterMaintenance… Table 1-2. 300 LPM Character Band & PROM Set Kits p. 1-10 (p. 30-31 in PDF) & Table 1-3 600 LPM .... p1-12 (p. 32-33 in PDF) List "Country/Language","Character Band Number","PROM Number"."Number of Printable Characters","Description","Font Style","Spacing" Band???????????????? Desc????????????????? Font Style 250035-019 64 Utility?? ? ? ? ?? ???? DPC-C 250042-022 96 Upper/Lower???? DPC-B/C 250045-022 96 Upper/Lower???? DPC-C 250088-039 96 ASCII/Modified? DPC-B "Number of Print..." is 64 or 96 ... except for an Arabic one "Spacing in characters per inch" is always 10, except for 4, 15 pitches "Font Style" is either DPC-B, DPC-B/C, DPC-C, DPC-15, DPC-D for Thai, Arabic Are there fonts available for the common Font Styles (DPC-B. DPC-B/C, DPC-C)? The fonts for the Dataproducts (64-char) drum printers may be in that set. It's possible that the Dataproducts laser printers may have provided the fonts, but googling hasn't shown anything, the Dataproducts website is on archive.org, and my searches showed that the Computer History Museum has a printer and a few bands. The HP2614A Drum printer we had in 1980 was probably one of those and we had band printers later. I should look through my printouts ... There's a font for the IBM 1403 http://ibm-1401.info/IBM140310Pitch-Regular.otf "Chainprinter Regular Font" at http://legionfonts.com/fonts/chainprinter-regular may be related to the IBM 1403 one too. This assumes that fonts might be useful for OCR at some stage, or for checking retyped data, or for fun on SIMH.

6 years, 1 month

Vaxstation 400/90 power supply

by emu＠e-bbes.com

Hi all, I have 4000/90 which behaves funny. It only starts, after switching on twice. The first time, all LEDs stay on, flipping the switch off/on, it boots happily. Any insight? THANKS!

6 years, 1 month

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