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

by CLASSICCMP＠trailing-edge.com

>> >So what do you call the plug on a 'walkman' headphone? We'd call it a 3 >> >pole (or 'stereo') 3.5mm jack plug. >> >> Here when it's not called 3.5mm, it's called 1/8th inch. And the 2.5mm >> version is 3/32 inch. >Yes, but what do you call that type of connector? Is it a 'phone plug' >even though it's not 1/4" in diameter, or what? Yep, it's still a "phone plug", often listed as a "mini phone plug". -- 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

26 years, 3 months

2
1
0 0

IC ID help needed

by ethan_dicks＠yahoo.com

--- allisonp <allisonp(a)world.std.com> wrote: > 74C92x is TI and you need to find a TI or maybe motorola CMOS databook > CA1980ish. > >NS 74C921... These are not TI, they are Nat Semi as indicated by the double squiggly lines before the number. In any case, if I have the relevant data book, it's backed way far away in a box somewhere. Thanks to all for all the info. -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com

26 years, 3 months

1
0
0 0

Santee swap serendipity

by Innfogra＠aol.com

3.5mm is a 1/8" Mini phone plug, stereo or mono 2.5 is a 3/32" Micro phone plug, stereo or mono Paxton

26 years, 3 months

1
0
0 0

Acorn A4 website?

by netsurfer_x1＠hotmail.com

Does anybody know where (if?) there is a dedicated website for the Acorn A4 laptop? All my searching turned up nil. ____________________________________________________________ David Vohs, Digital Archaeologist & Computer Historian. Computer Collection: "Triumph": Commodore 64C, 1802, 1541, FSD-1, GeoRAM 512, Okimate 20. "Leela": Macintosh 128 (Plus upgrade), Nova SCSI HDD, Imagewriter II. "Delorean": TI-99/4A. "Monolith": Apple Macintosh Portable. "Spectrum": Tandy Color Computer 3. "Boombox": Sharp PC-7000. ____________________________________________________________ ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

26 years, 3 months

3
2
0 0

PROMs offered: Should I take?

by kyrrin＠bluefeathertech.com

I've been offered a cheap price on a tubeful of Signetics 82S123 bipolar PROMs. If memory serves (pun intended), these were used as boot ROMs for various PDP-11's of the UniBus persuasion. Is this so? If so, are they also useful for other classic apps? I'm considering picking them up, but don't know for sure whether I'd be wasting $10 or not... Thanks in advance. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner and head honcho, Blue Feather Technologies http://www.bluefeathertech.com // E-mail: kyrrin(a)bluefeathertech.com Amateur Radio: WD6EOS since Dec. '77 "Our science can only describe an object, event, or living thing in our own human terms. It cannot, in any way, define any of them..."

26 years, 3 months

3
2
0 0

Ersatz-11 V2.2 (PDP-11 emulator)

by wilson＠dbit.dbit.com

A new version of Ersatz-11 is now available. V2.2 of the freeware Demo version may be downloaded from www.dbit.com as usual, and commercial users with current update subscriptions (or ones that expired only recently) will be mailed update disks tomorrow. Probably the most interesting addition for hobby users is the new VT11 vector graphic display processor emulation. Yes, it runs the Lunar Lander game. It also works nicely with the GT ON command in older versions of RT-11, as well as EDIT.SAV's scroller mode. A copy of Jack Burness's Lunar Lander game which is all set up to run under the emulator is available at: http://www.dbit.com/pub/e11/lunar/ Other changes which are visible even in the Demo version include the SET CPU FIS and SET CPU EAE options, the Interlan NI1010A/NI2010A Ethernet emulation, the built-in mini-assembler, and the overhauled manual. The full commercial V2.2 release includes the above changes, plus it adds a new DR11C/DRV11 emulation using TLC's DCI-1300 PCI board, which is pin-compatible with the DR11C/DRV11. Also there's a new DH11/DM11BB emulation, the RocketPort driver can handle ISA cards (used to be PCI only), the SCSI disk driver can partition disks on any boundary, multiple serial ports can be attached to the same emulated PDP-11 port (with duplicate output and merged input), and the Q/Unibus adapter drivers allow subsetting of the I/O page so you can have multiple adapters, to get a dual Q/Unibus system, or two identical busses for distributing heavy DMA loads. The new DMA-friendly BCI-2004 bus adapter is supported in addition to the older BCI-2003/2103 and UPG-3600 boards. Also, the DEQNA emulation now supports booting over the network. Acrobat files containing the manuals for all three versions (Demo, Lite, full) of E11 are available on the "Links" page on www.dbit.com. The Demo version's manual .PDF file is also part of the self-extracting INSTALL.EXE archive, plus it's available as a PostScript file at: ftp://ftp.dbit.com/pub/e11/e11demo.ps The E11/Linux port is nearing completion and will be released this summer, however it will probably only be available in a commercial version. John Wilson D Bit www.dbit.com

26 years, 3 months

1
0
0 0

I think I'm back to the list...

by rexstout＠uswest.net

Yow! The things that happen to an overloaded email account... Well, I finally started reading the digests for the list. I'm up to early February now! Only a month left to catch up with. Well, I finally found the perfect computer! It's an HP Vectra 486/25NI. When I was volunteering at the computer lab at OMSI(http://www.omsi.edu/), my favorite computer was a Vectra 386. They're just such cute computers! Well, here in Portland at the NW PDX/Vaughn St. Wacky Willy's, they have probably two dozen Vectras of various models(most are 486/25N or 33N) for $20 each. After looking at them for a while, I noticed that the 25NI(the only one I saw, but there may have been others) has a built-in 10Base-T ethernet port on the back! Not only that, but it has an Overdrive socket that can accept a 486DX2/66 or an Overdrive kit. Pretty good! It has 8MB RAM and a 120MB hard drive, not too bad. It had Windows 3.1 on it, but it would crash both when it started up(actually an unhappy mainframe connection) and when it shutdown(Windows crash). I think they all had Attachmate (I can't remember if those are 3270) network adapters in them. Anyways, it got wiped and a fresh copy of DOS installed. Now I'm happy, I finally have a useable PC(my PS/2 386's just weren't good enough). OK, so it's a bit new for you guys. They also had a Televideo terminal and some HUGE IBM printer(I forget the model... coax connector on back). Now, to deal with my overcrowded basement. I need to get rid of some stuff! To start off with, I have some terminals to get rid of. I think I can dig out about 6 of them, maybe a few more I'm not sure. They are the Wyse WY-99GT. Most of them are a little yellowed, but they work fine. They're free for the taking, I just need some time to find them all and match them with their keyboards. The only catch is that you have to pick it up at my house in north Portland(just off of I-5). Email me if you're interested and I'll let you know when they're ready to go. Back to reading another months worth of email digests... -- /-------------------------------------------------------\ | http://jrollins.tripod.com/ rexstout(a)uswest.net | | KD7BCY List admin for orham and ham-mac at www.qth.net | | pdxham at www.onelist.com | \-------------------------------------------------------/

26 years, 3 months

1
0
0 0

Santee swap serendipity

by pete＠dunnington.u-net.com

On Apr 1, 22:26, Tony Duell wrote: > The Spectrum uses a 'power connector', probably 2.5mm (but I've not > measured it). The central pin of the part on the PCB is -ve, and the > outer of the plug (cable mounted part) is therefore +ve. > > The ZX81 uses a 3.5mm jack socket (what you call a 'phone socket' across > the Pond) for the power input. The tip is +ve and the sleeve is -ve. Oops, looks like I was too hasty and grabbed the wrong PSU. I'm sure Tony is right, now that I think about it. The ZX81 certainly uses a 3.5mm jack. -- Pete Peter Turnbull Dept. of Computer Science University of York

26 years, 3 months

1
0
0 0

CDrom and SunStation 330

by pete＠dunnington.u-net.com

On Apr 1, 13:09, Chris Kennedy wrote: > Technoid(a)cheta.net wrote: > > > I ran accross a reference in the newsgroups that indicates the Toshiba > > 3701b cdrom drive can be run on a sun box with the change of a single > > jumper but what jumper. > > I've no ideal; all of my "Sun" CDROM drives are Toshiba but other than > a factory test jumper and the ID jumpers there's nothing to suggest that > they have hardware-selected block sizes. Early Suns need the drive to be set for 512-byte blocks; later Sun boot PROMs can issue the appropriate mode-select command if they detect the drive is set to 2048-byte blocks. XM3301 and XM3401 have two pairs of pads on the PCB near the jumper block; these are normally both closed (bridged by a thin track) on drives sold for the PC market, but both open for Suns. The pads are small semicircles, labelled 0 and 1. There's a very similar set of pads on an XM3601, but they don't change the blocksize, at least not with standard Toshiba firmware. I don't know about a 3701, as I don't have one. -- Pete Peter Turnbull Dept. of Computer Science University of York

26 years, 3 months

1
0
0 0

PROMs offered: Should I take?

by mranalog＠home.com

> Date: Sat, 01 Apr 2000 09:09:55 -0800 > From: Bruce Lane <kyrrin(a)bluefeathertech.com> > Subject: PROMs offered: Should I take? > > I've been offered a cheap price on a tubeful of Signetics 82S123 bipolar > PROMs. If memory serves (pun intended), these were used as boot ROMs for various > PDP-11's of the UniBus persuasion. > Is this so? If so, are they also useful for other classic apps? I'm > considering picking them up, but don't know for sure whether I'd be wasting > $10 or not... > Thanks in advance. The 82S123 is the installed monitor PROM in the Quest Super ELF and it's a great little PROM for any 1802 application. I believe most of the toggle switch monitors listed in the PE ELF articles will fit in 32 bytes. And since the 1802 need external address latching to access more than 256 bytes, having your whole operating system in 32 bytes leaves plenty of space for applications on a 256 byte minimalist system. :) --Doug ==================================================== Doug Coward dcoward(a)pressstart.com (work) Sr. Software Eng. mranalog(a)home.com (home) Press Start Inc. http://www.pressstart.com Sunnyvale,CA Curator Analog Computer Museum and History Center http://www.best.com/~dcoward/analog ====================================================

26 years, 3 months

1
0
0 0

I need some PDP-11 RT11 archiving software

by dylanb＠sympatico.ca

-----Original Message----- From: CLASSICCMP(a)trailing-edge.com <CLASSICCMP(a)trailing-edge.com> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Friday, March 31, 2000 12:42 PM Subject: RE: I need some PDP-11 RT11 archiving software >>I am spending all my time right now packing and rackmounting - I have no >>time to write anything. I will have some people come over and feed in the >>paper tape this weekend. While I won't be able to archive most of it, I do >>hope to at least read in most of the source code on paper tape. (I have over >>310 PDP-1 paper tapes alone). >> >>This program needs to be *very* easy to use and hopefully supports >>X/Y-MODEM. I will set up a terminal program at this end that supports 32 >>character file names (windows 98). This program would have to run under >>RT11-V3B, or RT11V4 BL. Hopefully it would send the code down a serial line >>separate serial port. > >Umm, what's wrong with Kermit? The latest Kermit for RT does just fine under >RT-11 V4, and Kermit is available for just about every other piece >of hardware ever created. See ftp://kermit.columbia.edu/ > >>It would be really nice if this software just asked the end user to load a >>paper tape, then huit return, and it sends the data read out a separate >>serial port, then prompts to load the next one. > >What sort of paper tape reader are you using? If it's a serial reader, >you can hook it straight up to a PC-clone running MS-DOS and MS-Kermit >(or Linux and C-Kermit) and archive the tapes that way. Both MS-Kermit >and C-Kermit include powerful scripting languages. PC05 with a PC11 controller. > >Remember, you *don't* have to start from scratch, others of us have >been archiving this sort of stuff for many years. > I appreciate that. Do you have this archived: PDP-1 source code. PDP-11 source code - Dos/Batch-11 , RT11. I also have source code to most of the packages they released. If you have this stuff then I won't bother archiving all the source code I have and pass it on. I did get almost all the source from the original minicomputers dec knocked out.. alot of it was internal. john >-- > 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 >

26 years, 3 months

9
10
0 0

Santee swap serendipity

by pete＠dunnington.u-net.com

On Apr 1, 10:48, Cameron Kaiser wrote: > In my eyes, though, the real prize was a Timex Sinclair 1000 with 1016 RAM > pack and six tapes, manual and all the cables EXCEPT the power supply. The > manual has no pinout. It looks like a 9V 1/8" jack but is it centre > negative or positive? It's centre-negative, on a 2.5mm power jack. -- Pete Peter Turnbull Dept. of Computer Science University of York

26 years, 3 months

2
1
0 0

VAX station 2000 HD details?

by CLASSICCMP＠trailing-edge.com

> VAX station 2000 HD details? A lot of what you might ever want to know is answered in ftp://ftp.spc.edu/third-party-disks.txt I'm guessing that between that document and the DEC Micronotes about 80% of the questions asked here about DEC stuff are answered... Tim.

26 years, 3 months

1
0
0 0

whos this doof news@cosmic.com?

by allisonp＠world.std.com

Is the listserv being spammed by this doof or is it a posting problem? >news(a)cosmic.com Allison

26 years, 3 months

4
3
0 0

Messages Per Month

by steverob＠hotoffice.com

> -----Original Message----- > From: healyzh(a)aracnet.com [mailto:healyzh@aracnet.com] > Sent: Thursday, March 30, 2000 9:34 PM > To: classiccmp(a)classiccmp.org > Subject: Re: Messages Per Month > > > > I was just checking the number of messages that have come > through this year > > and it is pretty close to 3900 so far! Let's see. At 90 > days into the year, > > it averages out to about 63 per day. No wonder things get > lost in my inbox > > :)! Wonder how many it would be if Tony were still posting :-) Anyone know what happened to him? Steve Robertson <steverob(a)hotoffice.com>

26 years, 3 months

6
5
0 0

VAX station 2000 HD details?

by ip500＠roanoke.infi.net

Not really old enough to be a classic but looks useful. Sep portable, w/handle Hard drive-----model VS410-AA-- Anyone know what is inside--drivewise? RD52,53,54 maybe? Thanks

26 years, 3 months

1
0
0 0

Santee swap serendipity

by ckaiser＠oa.ptloma.edu

Unix server freaks missed out at the Santee swapmeet. Some guy was selling an original NeXT for $75, there were a whole row of Sparc SLCs at $15 a pop, and an SGI Indigo and two SParc 2s. The Sparc 2s were loaded with Linux and ready to run. There was also a Mac Portable, but by the time I came back to buy it it was gone :-( The only server I care about is my Apple Network Server 500, but if you're near the San Diego area show up on the first/third Saturdays of the month -- they might be back. There were also some assorted Data General boards (dated 1968) but I have little experience with them. I got, myself, an NEC 8201A. I understand this acts like a Model 100. It works great, came with the leather case, and is in fantastic condition, but it has no manuals whatsoever. Any resources I might consult for it? How do I connect a modem (or does it have an internal one) to use the Term program? It was only $10 :-) In my eyes, though, the real prize was a Timex Sinclair 1000 with 1016 RAM pack and six tapes, manual and all the cables EXCEPT the power supply. The manual has no pinout. It looks like a 9V 1/8" jack but is it centre negative or positive? At the bottom of the box, when I got it home, I also found that there was, of all things, an AIM-65 BASIC manual in there too. Also, has anyone turned up an Atari 130XE power supply in their travails? I'm still trying to get that XEGS working. -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser * Point Loma Nazarene University * ckaiser(a)ptloma.edu -- "I'd love to go out with you, but I've dedicated my life to linguini." -----

26 years, 3 months

1
0
0 0

PROMs offered: Should I take?

by allisonp＠world.std.com

Well, 82s123 are proms, they are used in a lot of places however are they programmed or not? If they are you get whats in them. If not, you need a way to blast them. Allison -----Original Message----- From: Bruce Lane <kyrrin(a)bluefeathertech.com> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Saturday, April 01, 2000 12:21 PM Subject: PROMs offered: Should I take? > I've been offered a cheap price on a tubeful of Signetics 82S123 bipolar >PROMs. > > If memory serves (pun intended), these were used as boot ROMs for various >PDP-11's of the UniBus persuasion. > > Is this so? If so, are they also useful for other classic apps? I'm >considering picking them up, but don't know for sure whether I'd be wasting >$10 or not... > > Thanks in advance. > > >-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- >Bruce Lane, Owner and head honcho, Blue Feather Technologies >http://www.bluefeathertech.com // E-mail: kyrrin(a)bluefeathertech.com >Amateur Radio: WD6EOS since Dec. '77 >"Our science can only describe an object, event, or living thing in our >own human terms. It cannot, in any way, define any of them..." >

26 years, 3 months

2
1
0 0

IC ID help needed

by allisonp＠world.std.com

9102=2102 sram. It's just another number for the same thing. 74C92x is TI and you need to find a TI or maybe motorola CMOS databook CA1980ish. Allison From: Ethan Dicks <ethan_dicks(a)yahoo.com> >AMD 91L02 - I know it's some kind of SRAM but not the size or pinout. The 9101 >is 256x4. This one is likely to be either 1024x1 or 1024x4 but I don't know >which. > >NS 74C921 - The 74C922 and 74C923 are somewhat common keyboard encoders, one >of which was used on the Netronics Elf-II design. I can't find any info on >the pinout of the 74C921, but I did find several places selling them from >$6 USD to 72 Danish Kroner (however much that is) > >I have a few of each, along with 2Kb of 21L02 chips (-2L and -4L speeds, >whatever they are), all with 1979 - 1983 date codes. > >Any clues? > >Thanks, > >-ethan > > >===== >Even though my old e-mail address is no longer going to >vanish, please note my new public address: erd(a)iname.com > >The original webpage address is still going away. The >permanent home is: http://penguincentral.com/ > >See http://ohio.voyager.net/ for details. > >__________________________________________________ >Do You Yahoo!? >Talk to your friends online with Yahoo! Messenger. >http://im.yahoo.com >

26 years, 3 months

2
1
0 0

VAX station 2000 HD details?

by allisonp＠world.std.com

The hard drive can be any of the RD51-54, RD31, RD32 others are possible as user retrofits. Typically the hard drive was a RD53(71mb) or RD54(159mb). Allison -----Original Message----- From: Craig Smith <ip500(a)roanoke.infi.net> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Saturday, April 01, 2000 3:06 PM Subject: VAX station 2000 HD details? >Not really old enough to be a classic but looks useful. Sep >portable, w/handle Hard drive-----model VS410-AA-- > Anyone know what is inside--drivewise? RD52,53,54 maybe? >Thanks >

26 years, 3 months

2
1
0 0

IC ID help needed

by ethan_dicks＠yahoo.com

I've done the basic digging (www.chipdir.com, etc.) and can't find info on the following chips I found in a box of stuff some one gave me a while back: AMD 91L02 - I know it's some kind of SRAM but not the size or pinout. The 9101 is 256x4. This one is likely to be either 1024x1 or 1024x4 but I don't know which. NS 74C921 - The 74C922 and 74C923 are somewhat common keyboard encoders, one of which was used on the Netronics Elf-II design. I can't find any info on the pinout of the 74C921, but I did find several places selling them from $6 USD to 72 Danish Kroner (however much that is) I have a few of each, along with 2Kb of 21L02 chips (-2L and -4L speeds, whatever they are), all with 1979 - 1983 date codes. Any clues? Thanks, -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com

26 years, 3 months

3
2
0 0

Qbus cards that need ID

by Innfogra＠aol.com

I have four Qbus cards that I am interested in finding out what they are. One is a Micro Technology QTS25. It has a 50 pin header. I was wondering if it was a SCSI card? The second is an Emulex QD331040100 Rev. J. This has a 60 pin header and two 26 pin headers. I was wondering if this was a SMD drive controller? The third is a Dilog DQ696-20.vThis has a 34 pin header and two 20 pin header. My guess is that it is a MFM or ESDI hard drive controller. In the same group of cards is a DEC M7546 which I believe is a TK50 tape drive controller. Why is it called a Maya Controller? Thanks for the help. Paxton

26 years, 3 months

4
3
0 0

Qbus cards that need ID

by CLASSICCMP＠trailing-edge.com

>One is a Micro Technology QTS25. It has a 50 pin header. I was wondering if >it was a SCSI card? This is a TD Systems Viking controller, tape-only. >The second is an Emulex QD331040100 Rev. J. This has a 60 pin header and two >26 pin headers. I was wondering if this was a SMD drive controller? That's right, a QD33, MSCP emulating. It handles fairly fast SMD drives (i.e. Eagles, 2344's, etc.) >In the same group of cards is a DEC M7546 which I believe is a TK50 tape >drive controller. Why is it called a Maya Controller? I believe that Maya was the DEC development code-name for the TK50. The Aztec, IIRC, was the RC25. -- 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

26 years, 3 months

1
0
0 0

Original ARPANET protocols (was: I need some PDP-11 RT11 archiving software)

by allisonp＠world.std.com

I thought the classic PDP-11 unix way was UUCP. Allison ..>On Fri, 31 Mar 2000, Chris Kennedy wrote: >> >> Dunno, but I was using FTP in 1975-76. I'd guess that >> any behavioral resemblence is more a consequence of the >> two both having similar functions, i.e., moving files >> around, rather than any sort of common parentage... >> > >If you were using it in 1975-1976, it wasn't FTP as it exists today - >it would be the FTP implemented on top of the "old" ARPANET protocols >(sometimes referred to as "NCP", but I believe more properly referred to >as simply "Host-to-Host Protocol"). > >But that reminds me of a question I had while I was having lunch today ... >Was there ever an implementation of the old ARPANET protocols on a PDP-11 >or VAX Unix? If it ever existed, I'd guess it would have had to have been >on top of Seventh Edition, but I can't recall ever seeing any drivers for >an ACC LH/DH or DEC IMP-11 on any incarnation of that platform. Berkeley >Unix added TCP/IP in 4.1a, but I don't remember if there had been any >ARPANET support (for the old protocol) before that. > >--Pat. > >

26 years, 3 months

1
0
0 0

I need some PDP-11 RT11 archiving software

by pete＠dunnington.u-net.com

On Mar 31, 14:57, John Allain wrote: > Funny, I've been using Kermit since 1981 and FTP since 1985 and > I still don't know which egg/chicken came first. > They seem awfully similar from a user's standpoint. > Anybody know If FTP is based on Kermit or Vice-Versa? They're fairly different "inside". For example, kermit assumes an "unreliable" connection, and does it's own error-checking, while FTP relies to some extent on a transport layer that already has error-checking. I suppose they naturally have some similarities on the "outside" because they serve similar purposes, though. Anyway, kermit predates FTP by a few years. -- Pete Peter Turnbull Dept. of Computer Science University of York

26 years, 3 months

1
0
0 0

I need some PDP-11 RT11 archiving software

by CLASSICCMP＠trailing-edge.com

>Funny, I've been using Kermit since 1981 and FTP since 1985 and >I still don't know which egg/chicken came first. >They seem awfully similar from a user's standpoint. >Anybody know If FTP is based on Kermit or Vice-Versa? The first RFC for FTP is RFC 765, from June 1980. It begins: The objectives of FTP are 1) to promote sharing of files (computer programs and/or data), 2) to encourage indirect or implicit (via programs) use of remote computers, 3) to shield a user from variations in file storage systems among Hosts, and 4) to transfer data reliably and efficiently. FTP, though usable directly by a user at a terminal, is designed mainly for use by programs. Note that today there are few "programs" that know how to speak FTP directly, when someone says "FTP this" they almost always mean running the user-types-command-to-a-FTP-client. (Yes, there certainly are some programs that know how to speak FTP, I'm just pointing out that this isn't as common as the originators of the protocol wanted. If anything, it seems to be gaining in popularity as a "built-in" protocol, for example wget will take a ftp: or http: URL quite interchangably.) The user interface for both Kermit and FTP certainly are similar, and that shouldn't be a surprise, since the "big iron" being hooked up to other "big iron" in that day was almost always PDP-10 to PDP-10. Both the Kermit and FTP command styles are descended from the PDP-10 conventions (the TOPS-20 monitor in particular.) -- 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

26 years, 3 months

2
1
0 0

I need some PDP-11 RT11 archiving software

by CLASSICCMP＠trailing-edge.com

I wrote: >The first RFC for FTP is RFC 765, from June 1980. It begins: Whoops, I found several earlier ones, extending all the way back to RFC 354 (from 8-Jul-1972). This references RFC264, which doesn't seem to exist anymore. Tim.

26 years, 3 months

1
0
0 0

Storage Machine 1

by CLASSICCMP＠trailing-edge.com

>I was just looking over a notebook on what appears to be an OS called >Storage Machine 1 by FileTek. I was wondering if anyone knows anything >about this, and what hardware it ran on. Some notes identify the >cartridge tape drive as "TK50" and the system seesm to have had a big optical >disk library device, about 2.3 or 2.6 gigs. > >Does this sound familiar to anyone? It came in a pile of material from a >DG Nova system. >From www.filetek.com: William C. Thompson and John Burgess founded FileTek in 1984 to address the need for making very large volumes of offline information accessible to online users of mainframes minicomputers, and networked workstations. They firmly believed that historic detail has an increased value when organizations can access and use it productively. In 1987, FileTek introduced its first product, Storage Machine/1, a shared client/server-based, automatically managed storage server. This innovative data server used sophisticated storage management software to control a storage hierarchy of magnetic disk and write once read many (WORM) optical technology. -- 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

26 years, 3 months

1
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Looking for Honeywell TACPAC

by mrdos＠swbell.net

Has anyone heard of TACPAC for old Honeywell computers? I have a Honeywell Level 6, and according to the manual, I need TACPAC to boot the machine.

26 years, 3 months

1
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I need some PDP-11 RT11 archiving software

by CLASSICCMP＠trailing-edge.com

>>>It would be really nice if this software just asked the end user to load a >>>paper tape, then huit return, and it sends the data read out a separate >>>serial port, then prompts to load the next one. > >>What sort of paper tape reader are you using? If it's a serial reader, >>you can hook it straight up to a PC-clone running MS-DOS and MS-Kermit >>(or Linux and C-Kermit) and archive the tapes that way. Both MS-Kermit >>and C-Kermit include powerful scripting languages. >PC05 with a PC11 controller. OK, you can hook the PC05 up to a PC, but you'd have to do some re-wiring and write the simple code to read it. If you've already got a running RT-11 system with the PC11 in it up and running, it's probably easier if you use Kermit on the RT end and a Kermit script on the PC-clone to do the automation and user prompting. OTOH I could run all the tapes through the machinery here in a few days, as well. It's too bad that you have to do it all in just a few days before they're gone, setting up the automation on your end with your equipment sounds like it might end up taking most of your allotted time, when such archiving (ideally) shouldn't be done in such a rush. How many feet total are we talking about, 10 thousand feet, 30 thousand feet, 100 thousand feet? Remember than 10 thousand feet is (approximately) 1.2 megabytes, and takes a bit more than an hour if you can run it continuously through a PC05's 300 char/sec reader. -- 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

26 years, 3 months

1
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Altos machines

by peter.pachla＠wintermute.org.uk

Does anyone have any pointers to sites on the web which cover Altos machines? I've done a search on Yahoo and a couple of other places and turned up nothing. I'm particularly interested in information on the Unix systems they were making around 1990 - we had one at work, an i386 in a tower case. Not PC compatible IIRC, possibly called an "Altos III" or something similar. While I'm on the subject, would anyone in the UK have one of these they want rid of? TTFN - Pete. -- Hardware & Software Engineer. Sound Engineer. Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC) peter.pachla(a)wintermute.org.uk | www.wintermute.org.uk --

26 years, 3 months

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Old Magnetic Media Questions

by mmcfadden＠cmh.edu

I have somewhere a GAO report that lists the problems, lifetimes, and quantities of data that the US government has on different magnetic media. IIRC the big problem with magentic media is that it is never stored in the correct environmental conditions that provide optimum lifetimes. They included pictures of piles of 9-track tapes of LANDSAT data, some of the stacks were used to block open the door to the tape library. Humidity and heat are big problems for tape. Here are several references about data storage and media Preserving Digital Objects: Recurrent Needs and Challenges. Michael Lesk. Bellcore. Abstract. We do not know today what Mozart sounded like on the... URL: www.lesk.com/mlesk/auspres/aus.html . Effects of Humidity on Life Expectancy of Media. Long-Term Preservation of Dig <http://www.safesupplies.com/article1.html> Long-Term Preservation of Digital Materials. Dr. John W.C. Van Bogart National Media Laboratory. Presented at the National Preservation Office (NPO)... URL: www.safesupplies.com/article1.html http://www.cclabs.missouri.edu/~ccgreg/tapes.html Magnetic Tape and Digital Media Life Expectancies Preservation of New Technology <http://palimpsest.stanford.edu/byauth/lesk/lesk2.html> ...as digital media, DAT cartridges, 9-track tape in... ...example, half-inch 9-track magnetic tape densities have... palimpsest.stanford.edu/byauth/lesk/lesk2.html - Cached </search?q=cache:palimpsest.stanford.edu/byauth/lesk/lesk2.html> - 58k - GoogleScout </search?num=10&q=related:palimpsest.stanford.edu/byauth/lesk/lesk2.html> I think that the September 1995 issue of Scientific American had an article about preserving digital data. Mike

26 years, 3 months

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Research Machines Link 480Z (380Z ^IEEE)

by PeksaDO＠Cardiff.ac.uk

>> The 3.5" square (exactly) daughter board plugs directly into and >> only into where the Z80 CPU normally resides. The board contains: >> Z80 CPU, AM25LS252IPC, 2 x SN74LS245N, SN74LS00N, 74F32PC chips >> with assorted resistors etc. There is a 26 way berg connector to >> take the cable to the IEEE-488 port. Also there is a 8-way link >> box with 5 unbroken links, 2 broken links and 1 remade link. > I don't like to say things like this, but I think I am justified... >'Impossible!' > You've got an address decoder (AM25LS2521 == 74LS688 IIRC), a > couple of bidirectional bus buffers ('245s), and a few gates ('00 > NANDs and '32 ORs). What you don't have is any form of latch, which > is what you'd need for an output port. Since the IEEE-488 bus can > run a lot more slowly than the Z80 bus, it's going to need such > latches, at least for output. There are several possibilites. > Either you've missed out some chips (like '374s, or even a true > IEEE-488 chip like the 9914 or 7210). Or this is _not_ the IEEE-488 > option. I suspect the latter, actually. I would be very suprised if > the RML IEE-488 option was a daughtercard that fitted under the > CPU. Everything I can find out about it suggests it's a normal Z50 > bus card. This sounds like some kind of bus buffering/extension > card, sort of like the IDE interface (although obviously > incompatable with the PC type of IDE). Are you sure this is not > some kind of strange winchester interface. It could well be the > host adapter for (say) a WD1001 card or something like that. Please feel free to say 'impossible' - my knowledge of electronics at this level is minimal. I will now write out 100 times 'Failure to pay due regard to warnings repeatedly given, brings in its train dire consequences which might easily been avoided by the use of a little self restraint' (school line). As you have pointed out whatever this is, the person who installed it just made use of the convenient sized hole marked IEEE port. Nothing which came with the equipment (originally from Oxford University, then from Biomechanical Engineering at UWCM (University of Wales, College of Medicine), used that port. Doug.

26 years, 3 months

2
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I need some PDP-11 RT11 archiving software

by CLASSICCMP＠trailing-edge.com

>I am spending all my time right now packing and rackmounting - I have no >time to write anything. I will have some people come over and feed in the >paper tape this weekend. While I won't be able to archive most of it, I do >hope to at least read in most of the source code on paper tape. (I have over >310 PDP-1 paper tapes alone). > >This program needs to be *very* easy to use and hopefully supports >X/Y-MODEM. I will set up a terminal program at this end that supports 32 >character file names (windows 98). This program would have to run under >RT11-V3B, or RT11V4 BL. Hopefully it would send the code down a serial line >separate serial port. Umm, what's wrong with Kermit? The latest Kermit for RT does just fine under RT-11 V4, and Kermit is available for just about every other piece of hardware ever created. See ftp://kermit.columbia.edu/ >It would be really nice if this software just asked the end user to load a >paper tape, then huit return, and it sends the data read out a separate >serial port, then prompts to load the next one. What sort of paper tape reader are you using? If it's a serial reader, you can hook it straight up to a PC-clone running MS-DOS and MS-Kermit (or Linux and C-Kermit) and archive the tapes that way. Both MS-Kermit and C-Kermit include powerful scripting languages. Remember, you *don't* have to start from scratch, others of us have been archiving this sort of stuff for many years. -- 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

26 years, 3 months

1
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iOpener

by ethan_dicks＠yahoo.com

--- "Zane H. Healy" <healyzh(a)aracnet.com> wrote: > Personally, when and if mine ever shows up at CC, then I'll be paying with > *cash*. Don't sweat it. NP has already said that only units ordered directly >from them are subject to automatic account activation on the credit card that ordered it. Fair or not; legal or not; that is their policy. Units ordered through CC are not activated until plugged into the phone system and turned on. After all, they ship those whenever and they sit around at CC until they are bought (if they weren't 1000's of units backlogged ;-) There's no way to regulate that. The bad news is that NP is explictly shipping to direct customers in preference to CC customers. Mine is still on backorder through CC and likely will be for weeks. I'm number 10 out of 100 at my store alone. There are six stores within driving distance. They have received two units in two weeks. :-( The only good news is that units with a 21-Mar-2000 manufacture date appear to be unmodified. Who knows what the future may bring. For the $106 mine will cost (with tax), I'll take the risk that I have to remove epoxy or solder in a header. -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com

26 years, 3 months

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Odd Magnetic Media question

by healyzh＠aracnet.com

OK, I've got a wierd question now. What is the lifespan of Magnetic Media? In this case, I'm concerned about 4mm DAT, but since I'm more familiar with 8mm it as an example. Let's say I've got a stack of 8mm tapes with data on them. They're supposed to be good for archival purposes, when stored in the proper conditions for 2 years. Now let's say I've got a brand new box of 8mm tapes that have been sitting around still sealed for 8 years. Again, they've been stored in the proper conditions more or less. So are they still good? Is the 2 year number for their ability to hold data, or the actual physical lifespan. Anyone have any ideas? The real reason for the question is finding some 4mm tapes that are still sealed, and I'd estimate about 8 years old. Zane | Zane H. Healy | UNIX Systems Adminstrator | | healyzh(a)aracnet.com (primary) | Linux Enthusiast | | healyzh(a)holonet.net (alternate) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

26 years, 3 months

5
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Odd Magnetic Media question

by pete＠dunnington.u-net.com

On Mar 30, 15:25, healyzh(a)aracnet.com wrote: > > I think the 2 year is for reasonable useage. > > Actually the 2 year number is from a government study that I don't believe > is still online :^( It was refering to writing the data to tape and then > sticking the tape in a vault. In other words an archive tape. They found > 8mm was good for 2 years, while DLT and 9-Track tapes were good for 10 > years. > > > New tapes should last for 30 to 40 years at least > > with good storage. Tapes with data may not fare as well. That seems logical to me. I wonder how much of the apparent data loss is due to print-through? I was told that tapes ought to be rewound every year or two to minimise the print-through effect. The idea is that by doing so, you change the overlap between layers on the spool, and the effects cancel out to some extent. Having said that, I've just been reading some old cassette tapes on my Exidy Sorcerer. I sold my original Sorcerer (and associated tapes) 20 years ago, but got a replacement (with no tapes at all) for my collection recently. Last weekend, a friend brought me some tapes he'd found from his, unused since 1980. I've managed to read every program I've tried so far -- about a dozen -- on the four tapes I've tried. In a couple of cases, I got errors on the first read, but no problem on the second. I think that's probably due to the tape being more evenly wound/tensioned after playing through and rewinding once, a common effect in compact cassettes as I recall. -- Pete Peter Turnbull Dept. of Computer Science University of York

26 years, 3 months

1
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"New" prompt on Sun box

by mcguire＠neurotica.com

On March 29, Technoid(a)cheta.net wrote: > I have tried the 'n' command and it says it is not a command. If I enter > "new" it responds "cpu cache enabled" which is not what I wanted at all. > Is it possible this Sparcstation 330 (sparc 4/300) does not have the 'new' > prompt at all? -- Nope...of all the models in the sun4/xxx family, only the 4/6xx has OpenFirmware. The 4/1xx, 4/2xx, 4/3xx, and 4/4xx have sun3-style "old mode" only. -Dave McGuire

26 years, 3 months

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Altos stuff, *FREE*, DC Area

by CLASSICCMP＠trailing-edge.com

Bill and I spent the morning sorting through the Altos stuff we had rescued, and this is what we think we have: Altos 5 Box, Z-80 CPU, bunch of serial ports, two 5.25" floppy drives. Also a binder full of Altos 5 documentation. Altos 8000 Boxes (2 of them), Z-80 CPU's, bunch of serial ports, 8" floppy drives, and a binder full of accompanying documentation. Altos 68000 Boxes (3 of them), 68000 CPU's, one of the boxes has an expansion board filled with RAM, two of the boxes have 8" hard drives, all of the boxes have an 8" floppy drive, one of the boxes is missing the panel on the back filled with serial ports. We also have lots of Altos 8" software distribution floppies. Condition is unknown. Some of the boxes have stickers from ten years ago indicating that they were (at least partly) functioning back then, but we haven't powered any of this stuff on. Anyone interested? We will consider shipping these to a good home, though we'd prefer to find local (Washington DC area) takers. You don't have to take them all, you can pick and choose if you wish. -- 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

26 years, 3 months

3
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Prime 2455

by peter.pachla＠wintermute.org.uk

Whilst digging out some 380Z manuals I found a "Prime 2455" I'd forgotten I had.... I'd like to have a bash at getting this going, but aside from needing OS tapes (anyone help PLEASE?) the tape drive and hard drive have been removed along with some sort of drive mounting tray. Can anyone tell me what types/capacities of hard drive I can fit to this machine, and what model of tape drive does it take (all I know is that the tape and hard drives are SCSI devices)? Also, I *NEED* the mounting tray/stage which fits inside the top of the machine to which the drives attach. Anyone in the UK in a position to help? TTFN - Pete. -- Hardware & Software Engineer. Sound Engineer. Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC) peter.pachla(a)wintermute.org.uk | www.wintermute.org.uk --

26 years, 3 months

4
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PDP11/23 More dumb questions

by pete＠dunnington.u-net.com

On Mar 30, 22:30, Olminkhof wrote: > I do this and get: > > 147470 > @ > > Further iterations all result in: > > 173000 > @ > > If I hit restart at any time after that there is a some disk activity and > eventually and "&" prompt appears. The first address is in RAM, which is interesting. It suggests the processor is executing some bootstrap that gets copied into memory. 173000 is the standard bootstrap address; every time you restart the CPU, it sets the program counter to that address. The "&" is not any normal PDP-11 prompt, so that must have come from the disk or custom boot roms. -- Pete Peter Turnbull Dept. of Computer Science University of York

26 years, 3 months

1
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Tephelones (fairly off topic)

by pete＠dunnington.u-net.com

On Mar 30, 19:25, Philip.Belben(a)powertech.co.uk wrote: > This is only on topic at all because I shall be using a classic computer for > it... > > I understand that some mobile telephones nowadays can download tunes to play > when they ring. Can anybody point me to (a) the download protocol(s) that the > phones use and (b) the file format(s) for these tunes? Yes, several Nokia, Ericsson, and Siemens models can download tunes, and a few can be programmed in other ways with a data cable. One place to start might be http://www.cellulartips.com/index.html but there are lots of other sites around. You'll find a lot of information by using AltaVista, or DejaNews to search the uk.telecom newgroups as well (look for "nokia" and "data"), eg http://www.gadgets.demon.co.uk/nokia61xx/ -- Pete Peter Turnbull Dept. of Computer Science University of York

26 years, 3 months

1
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Tephelones (fairly off topic)

by Philip.Belben＠powertech.co.uk

This is only on topic at all because I shall be using a classic computer for it... I understand that some mobile telephones nowadays can download tunes to play when they ring. Can anybody point me to (a) the download protocol(s) that the phones use and (b) the file format(s) for these tunes? Philip. ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept for the presence of computer viruses. Power Technology Centre, Ratcliffe-on-Soar, Nottingham, NG11 0EE, UK Tel: +44 (0)115 936 2000 http://www.powertech.co.uk **********************************************************************

26 years, 3 months

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Research Machines Link 480Z

by PeksaDO＠Cardiff.ac.uk

> realise there was an analogue I/O card for the 380Z. I've got no > info on the winchester and network cards, but I guessed they must > have existed. IIRC at least one of the RML winchester systems was a > box about the size of a 380Z with a PSU, ST506-interfaced drive and > a SASI-ST506 interface card. I assume the 380Z interface was a SASI > host adapter or something. The 3rd. party winchester disk unit measures 16" x 16" x 4.5" and the cover (top and sides) is a beige type plastic with rounded corners (radius about 1") on the top of the sides; sitting on a metal base/ font/back. It has the wiring for two 5.25" FH disk drives but contains only one Rodime RO 100 (4 platters/8 heads/192 cylinders). The interface card in the disk unit is a 'Konan David Jr. II'. As I mentioned this has never worked. The instructions for running up the hard disk (given verbally to me) was to insert the floppy containing the executable x and to type x - Found the floppy, typed the command - nothing, although the disk does whirr quite happily, it doesn't seek. > I'd always assumed that the IEEE-488 card was a card that connected > to the bus cable. Are you saying that it's a daughterboard that > fits under the Z80 or something? The 3.5" square (exactly) daughter board plugs directly into and only into where the Z80 CPU normally resides. The board contains: Z80 CPU, AM25LS252IPC, 2 x SN74LS245N, SN74LS00N, 74F32PC chips with assorted resistors etc. There is a 26 way berg connector to take the cable to the IEEE-488 port. Also there is a 8-way link box with 5 unbroken links, 2 broken links and 1 remade link. > Do you happen to have schematics other than the ones that appear in > the normal Information File. Sorry, no schematics Doug.

26 years, 3 months

2
1
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RP04 geometry?

by DSEAGRAV＠toad.xkl.com

Since alt.sys.pdp10 is in a big flamewar right now, I guess I'll ask here. Does anyone know the correct geomerty of an RP04 pack in 18-bit mode? I have it as 19 heads, 411 cylinders, and 20 sectors a track, with 260 word sectors. (18 bit words, 256 data words and 4 header words.) I think that's wrong though. -------

26 years, 3 months

3
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I need some PDP-11 RT11 archiving software

by dylanb＠sympatico.ca

My entire collection was purchased by a *very* large corporation. Details will probably be PR'd later this month. I have a lot of source code and PDP-1 software that does not exist anywhere. I would like to back up this material in case of damage in shipping, and it should be made available to all. I am spending all my time right now packing and rackmounting - I have no time to write anything. I will have some people come over and feed in the paper tape this weekend. While I won't be able to archive most of it, I do hope to at least read in most of the source code on paper tape. (I have over 310 PDP-1 paper tapes alone). This program needs to be *very* easy to use and hopefully supports X/Y-MODEM. I will set up a terminal program at this end that supports 32 character file names (windows 98). This program would have to run under RT11-V3B, or RT11V4 BL. Hopefully it would send the code down a serial line separate serial port. I will only have this software here until Wednesday April 5,2000 (5 days). It would be really nice if this software just asked the end user to load a paper tape, then huit return, and it sends the data read out a separate serial port, then prompts to load the next one. Please e-mail me at: dylanb(a)sympatico.ca . P.S. Most wishlist items were set aside before this offer to purchase so I will be able to ship them soon. P.P.S I bought a DSI to do this but it got seriously damaged in shipping - I have no time to fix it. john

26 years, 3 months

1
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PDP11/23 More dumb questions

by jolminkh＠nsw.bigpond.net.au

Thanks to all for the advice so far. I now have the terminal connection working again at least. > >Try connecting directly to the 10-pin connector on the left side of the >MXV11, start it up, and hit the HALT button. You should get an address and >an ODT prompt. You should get another prompt every time you press RUN, if >HALT is still pressed in. Assuming the panel is connected to the backplane >correctly. > I do this and get: 147470 @ Further iterations all result in: 173000 @ If I hit restart at any time after that there is a some disk activity and eventually and "&" prompt appears. The keyboard doesn't respond and nothing seems to happen in a reasonable time after that. I consulted the original owner who reports that it definitely went through a self test routine on the screen and did this before the linked PDP8 was started, so there's a hardware problem somewhere. Anyway I'm streets ahead with the info from Aaron Finneys scans which I will now study. I plan to reseat all the roms and cards and check all the jumper settings. Thanks all, Hans

26 years, 3 months

1
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Scanned Docs Update

by af-list＠wfi-inc.com

Hi, Just a quick note to let everyone know that I (somehow) managed to add a few more docs to my page at http://www.retrobytes.org. Since my last announcement, I've added an HP section (sparse yet), some more RT-11 docs, some MicroPDP docs, an SWP section, etc... Cheers, Aaron

26 years, 3 months

1
0
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SUNOS 5.4 Root Password

by pete＠dunnington.u-net.com

On Mar 28, 12:38, Dwight Elvey wrote: > It is OK to call the 'ok' the open-boot prompt. I knew it had a proper name, but I didn't remember until later. Some of us still regularly call it "the new prompt" :-) > Forth is the hardware > persons secret tool, don't tell software types, they won't understand. Oh, I don't know. I've got software written in Forth, such as my PAL assembler. Though come to think of it, that's not really a software type's thing, is it. -- Pete Peter Turnbull Dept. of Computer Science University of York

26 years, 3 months

4
3
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PDP11/23 More dumb questions

by jolminkh＠nsw.bigpond.net.au

Well . . . after another few more hours of exploration : The M8059 YA card wasn't that at all. It is actually an M8639 YA. I need glasses . . and stronger light. Anyway, Control C doesn't work and I can no longer repeat getting to an @ prompt, instead getting a lot of backward ? characters at times. I'm now using the console port but have lost confidence in the terminal and serial cable completely. I discovered the baud setting control for the ports after I blew the dust out of the little window. Set the port to 4800 baud, the default setting on the VT220. All for no consistent result. Tried 110 baud on both with no result I switched to a straight though 25 wire serial cable and got absolutely no communication, . . added a null modem and got a little garbage . . changed >from the default VT200 mode 7 bit controls to some of the others . . . all to no result. I think the PDP is booting OK judging by the sounds it makes but there is nothing on the terminal screen. The terminal seems to do everything OK when in local mode. I have another VT220 tucked away. Trying that is all I can think of at this point. I should see something on the screen even if the hard drive or OS have a problem shouldn't I? Is there a PDP11's for Dummies book? Hans -----Original Message----- From: Pete Turnbull <pete(a)dunnington.u-net.com> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Wednesday, 29 March 2000 17:45 Subject: Re: PDP11/23 More dumb questions >On Mar 28, 15:25, CLASSICCMP(a)trailing-edge.com wrote: >> >> >M7195 >> >> >> >> 128 kbyte RAM >> >> >It's actually a MXV11-B Multifunction card, with 128KB RAM, and ... >> >> >> It's also particularly confusing, because you evidently have no serial >> >> line cards nor disk controllers in the backplane. I have no idea >> >> how you even got the ODT prompt out of the machine. >> >> >... the MXV11-B has two SLUs, of the same type as a DLV11. >> >> Yeah, that makes more sense. I still don't know how his machine is >> supposed to boot from disk without a disk controller, though! > >Ah, that's the magic part :-) > >-- > >Pete Peter Turnbull > Dept. of Computer Science > University of York >

26 years, 3 months

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