test-drb December 1999

test-drb@ccmp.vtda.org

186 participants
742 discussions

by allisonp＠world.std.com

Actually this is not hardware specific but echos the points many have made. Stable mature systems we know how to use. Really CPM may have bugs but, they are known, true for many small and larger machines that are aging. This beats a lot of new hardware and software where buggyness is a grand unknown while work MUST be done. Allison

24 years, 12 months

how many heads, Cylinders on a Quantum 540?

by allisonp＠world.std.com

< Model Interface Capacity Cylinders Heads Sectors < Q540 MFM 36MB 512 8 17 Actually 42mb unformatted and despeding on controller 31-36mb formatted. They work real well with WD1005 or 1007 controllers (RLL) for around 42-44mb. Allison

24 years, 12 months

OT: how many heads, Cylinders on a Quantum 540?

by allisonp＠world.std.com

<I've seen occasional mention of the quantum 540 HDD on the list. Has <anybody got the cylinder and head count available? Quantum D-540 also known as RD52. 512C 8H Embedded servo. Fast drive for it size (~31mb). I've also found they work well with RLL conttrollers too. Allison

24 years, 12 months

Power supply for GRiDcase 1535?

by mrbill＠mrbill.net

Anybody know where I can pick up an AC power supply for this beast? Just got one in great shape, with battery pack, etc, for $9.95.... Bill -- +-----------------------+----------------------+----------------------+ |Bill Bradford | mrbill(a)pdp11.org | mrbill(a)mrbill.net | |http://www.sunhelp.org | http://www.pdp11.org | http://www.mrbill.net| +-----------------------+----------------------+----------------------+

24 years, 12 months

DEC boards avail

by oliv555＠arrl.net

Got hold of some DEC boards here in SoCal that were about to be scrapped. Some were going to another list member, but haven't been able to get hold of him (Dave, let me know if you still need the 11/24 bd). These are rather obscure devices, 2 M3110's(hex), 2 M3111's(hex), 15 M3102's(dual), 1 M8743(hex 11/24 memory) and 1 EMC2 memory (hex-depopulated). Separately, I picked up a rather dusty quad M8350 ("positive IO bus interface" ??). Anyone interested in any of these should contact me off list before the weekend. Yours for the postage, probably not more than $5 to $6 for a couple of bds. Dont really want to haul these back home to Houston, so if no takers will return to scrapper. Happy New Year to all! Nick

24 years, 12 months

Question for you 'big iron' collectors

by nerdware＠laidbak.com

I've been following the list for about a year and a half now and I'm curious -- you guys (both genders) that have the room and the know-how to run the big stuff -- what do you do with them? I guess I'm not that familiar with non-business apps for minis and I'm just curious what someone using a PDP at home would do with it? Do you just write code for the sheer challenge of writing code? Have you written real-world apps? Is it just nostalgia? Or do you keep them running purely for historical reasons and don't have any practical day-to-day use for them? It just fascinates me that there are so many of you who run these beasts and I'd just like to know why. Thanks. Paul Braun NerdWare -- The History of the PC and the Nerds who brought it to you. nerdware(a)laidbak.com www.laidbak.com/nerdware

24 years, 12 months

(sorry, disregard last message) Re: DEC boards avail

by dylanb＠sympatico.ca

falling asleep here. john

24 years, 12 months

DEC boards avail

by dylanb＠sympatico.ca

I could use the M8350 interface. I don't know how many I will be getting yet, if any, but I could use that now in my 8E. I would pay $30 for it. john PDP-8 and other rare mini computers http://www.pdp8.com -----Original Message----- From: Nick Oliviero <oliv555(a)arrl.net> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Thursday, December 30, 1999 6:29 PM Subject: DEC boards avail >Got hold of some DEC boards here in SoCal that were about to be >scrapped. Some were going to another list member, but haven't been able >to get hold of him (Dave, let me know if you still need the 11/24 bd). > >These are rather obscure devices, 2 M3110's(hex), 2 M3111's(hex), 15 >M3102's(dual), 1 M8743(hex 11/24 memory) and 1 EMC2 memory >(hex-depopulated). > >Separately, I picked up a rather dusty quad M8350 ("positive IO bus >interface" ??). Anyone interested in any of these should contact me off >list before the weekend. Yours for the postage, probably not more than >$5 to $6 for a couple of bds. Dont really want to haul these back home >to Houston, so if no takers will return to scrapper. > >Happy New Year to all! > >Nick > >

24 years, 12 months

A good bit..

by a2k＠one.net

This was my fortune today.. Proposed Additions to the PDP-11 Instruction Set: PI Punch Invalid POPI Punch Operator Immediately PVLC Punch Variable Length Card RASC Read And Shred Card RPM Read Programmers Mind RSSC reduce speed, step carefully (for improved accuracy) RTAB Rewind tape and break RWDSK rewind disk RWOC Read Writing On Card SCRBL scribble to disk - faster than a write SLC Search for Lost Chord SPSW Scramble Program Status Word SRSD Seek Record and Scar Disk STROM Store in Read Only Memory TDB Transfer and Drop Bit WBT Water Binary Tree Kevin ------------------------------------------------------------------------------- "It's you isn't it? THE BASTARD OPERATOR FROM HELL!" "In the flesh, on the phone and in your account..." -- BOFH #3

24 years, 12 months

Has anyone found the best way to preserve paper tape software?

by CLASSICCMP＠trailing-edge.com

>I really like "plug and play" Qbus systems but I don't think there is a >paper tape interface nor a DECTape one? There certainly are paper tape interfaces - just about any serial card will do for that. If you want 20mA and reader control, a good choice is the DLV11-F or the plain old DLV11. >>The beauty if that a 11/73 series will run most PDP-11 unix and PUPS has >>the license for any version at $100 and also an archive of PDP-11 versions >>of unix. >I would really like to run Unix on a PDP-11 (hopefully a 45 with all core >and FPU) but have never found the software. You *aren't* working in a vacuum, you know :-). For the past several years, Bob Supnik's emulators have come with Unix V5 through V7 binary distributions (see ftp://ftp.digital.com/pub/DEC/sim/ ), and Warren Toomey has an excellent archive available as well as easy terms for the Unix source license you'll need to access it (see http://minnie.cs.adfa.oz.au/ and click on "PUPS". Note that Adfa is offline for the summer holidays - I think they're back up on Jan 3.) -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

24 years, 12 months

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test-drb December 1999