test-drb March 2000

test-drb@ccmp.vtda.org

150 participants
515 discussions

by mbg＠world.std.com

>than the physical. RT-11 doesn't, it does swap jobs to a disk (or VM:). It only swaps to SY... if you're booted from the virtual disk (VM), then that is where it swaps... Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

26 years

PDP-11/23 deskside machine -DAMN

by hofmanwb＠worldonline.nl

The program was distributed by the author (Sytze Zijlstra) at the PDP11 Sig Decus Holland. It is very easy to use and works well. Wim Hofman ---------- > From: healyzh(a)aracnet.com > To: classiccmp(a)classiccmp.org > Subject: Re: PDP-11/23 deskside machine -DAMN > Date: Friday, March 24, 2000 8:27 AM > > > I boot a XXDP+ disk image from an emulated TU-58 on a PC running the > > emulator program from Sytze Zijlstra This emulator is also very useful to > > transport data between PC and PDP-11. > > > > Wim Hofman > > What emulator program? I don't believe I've heard of this one. > > Zane

26 years

Resetting C= machines with non-standard implements (was Re: Are you sure the 6550 is dead?)

by ethan_dicks＠yahoo.com

--- Philip.Belben(a)powertech.co.uk wrote: > > > > >> The old PETs don't AFAIK have the internal expansion connector - they have > >> an edge connector sticking out at one side. Very useful for toggling > >> RESET with a pair of tweezers! > > > > Don't miss! > > If I've got to the point where I need to hit RESET, it doesn't matter. It doesn't matter to the software, but there's the risk of shorting things together that don't want to be shorted. > Occasionally I corrupted I/O registers and disabled the interrupts that > serviced the keyboard. You'd better not miss when toggling IRQ with the > tweezers! I used to reset my development C-64 with a paperclip that I bent into a hair-pin shape with a .3" or .4" spacing to fit the proper pins on the expansion connector. I even melted a drinking straw and wrapped it around the top of the loop for a "handle". It was my programmer's reset for years. -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

looking for Hazeltine terminals

by mcguire＠neurotica.com

On March 24, allisonp(a)world.std.com wrote: > > I'm looking to acquire two models of terminals made by Hazeltine, > > the 1500 and the Esprit, in good operational and cosmetic condition. > > I used each of these for a long time many years ago and I'd like to > > keep one of each for sentimental reasons. Does anyone on the list > > Your missing the 1000 (early glass tty): > > Also 1400, 1420 1500, 1510, 1520, 1552(vt52 clone). Oh yes, I'm familiar with most of the line...I'm only really interested in keeping the two models that I worked on the most. I had a 1500 on an IMSAI-8080 (with a CCS Z80 CPU board) CP/M machine, and the Esprit was the console on my pdp11/34a running RSTS/E. If I hadn't paid more attention to those machines than my high school teachers, I'd surely have been flipping burgers with the rest of my high school friends. And now, 13 years after graduation, some of them are actually *managers* at McD's! WOW! ;) -Dave McGuire

26 years

11/34 programmers panel available

by wrking＠tsoft.com

A couple of months ago someone posted a message to this list saying that they were looking for an 11/34 programmers panel. I have one available, please contact me. Bill King

26 years

teletype wanted.....

by hofmanwb＠worldonline.nl

I tried to translate the dutch I wish you luck Wim Hofman ---------- > From: Cameron Kaiser <ckaiser(a)oa.ptloma.edu> > To: classiccmp(a)classiccmp.org > Subject: Re: teletype wanted..... > Date: Thursday, March 23, 2000 6:31 PM > > > No, it definitely doesn't hook up a TV. On the bottom is an acoustic coupler > that acts as both microphone and speaker. The keys say things like SEARCH, > INSERT, RCVE, LIST/PRINT, ON/STOP and LOAD/DUMP. There is a 1/8" stereo > jack on one side which the manual mentions might be connected to an RS232 > port (hope someone can translate this! -- it's Dutch and my schoolboy German > can't figure out enough words): > > ** import text ** To connect another printer than the PXP40 you can use the enclosed cable (see figure 4). The 3 pole round plug fits in the connection at the left hand side of the PX1000. The three loose wires at the other end of the cable should be connected to the printer according to the manual of it. The three wires have the following function: White (A) output to printer Red (B) input for PX1000 and power Screen (C) mass The buttons LIST/PRINT, ON/STOP and the linebutton have the same function as with the PXP40 when you use another printer. > 10.4 Andere printers > Voor het aansluiten van een andere printer dan de PXP 40 kunt u gebruik maken > van de meegeleverde kabel (zie afb. 4). De driepolige ronde steker past in de > aansluiting aan de linkerkant van de PX 1000. De drie losse draden aan de > andere kant van de kabel moeten worden verbonden met de printer, overeenkomstig > de handleiding daarvan. De drie draden hebben de volgende functie: > > wit (A) uitgang naar printer > rood (B) ingang voor PX 1000 en voeding > afscherming (C) massa > > De toesten LIST/PRINT, ON/STOP en de regeltoets hebben bij gebruik van een > andere printer dezelfde functies als bij de PXP 40. > Most printers with an RS232 or V24 are equipped with the here shown 25-pole connector. Not all pins are connected. Most printers will work when you connect them in the here shown manner. White (A) pin 3 Red (B) pin 20 Screen (C) pin 7 Connect pins 4,5,6 and 8 of the 25 pole connector with a wire. > De meeste printers met een RS232-ofwel V24-aansluiting zijn uitgerust met de > hier afgebeelde 25-polige connector, waarvan niet alle pennen zijn > aangesloten. De meeste printers zullen goed werken als u ze op de hiernaast > beschreven manier op de PX 1000 aansluit: > > [ figure, RS-232 ] > > [ figure, 1/8" three-connector jack ] > > wit (A) pen 3 > rood (B) pen 20 > afscherming (C) pen 7 > > Verbind de pennen 4, 5, 6 en 8 van de 25-polige connector met behulp van > een draad met elkaar door. > > ** end import ** >

26 years

PDP-11/23 deskside machine -DAMN

by hofmanwb＠worldonline.nl

I have formatted a number of MFM ST506 drives (e.g. ST-225) with an RQDX3 on my Qbus PDP-11's. Be careful to set the drives on address 3. I used the maintenance program ZRQCH0.BIC. This maintenace software is available on floppy disk. I boot a XXDP+ disk image from an emulated TU-58 on a PC running the emulator program from Sytze Zijlstra This emulator is also very useful to transport data between PC and PDP-11. Wim Hofman ---------- > From: Technoid(a)cheta.net > To: classiccmp(a)classiccmp.org > Subject: Re: PDP-11/23 deskside machine -DAMN > Date: Thursday, March 23, 2000 8:43 PM > ---------- > From: Technoid(a)cheta.net > To: classiccmp(a)classiccmp.org > Subject: Re: PDP-11/23 deskside machine -DAMN > Date: Thursday, March 23, 2000 8:43 PM > > After putting the skins back on the machine it is giving me a ERROR 13 - > DU0 not ready error. > > DAMN! > > I knew it wouldn't be that easy. I have a couple of spare ST506-type > drives to hang off it but don't know how picky the controller is or where > to find install media for an operating system. The drive sounds fine > (spins up and purges but no boot anymore) DAMN. > > What free operating systems are out there for this machine. I suppose I > will get another drive up and running and then get the data off of this > one if it is possible. DAMN. > > To be honest I think I didn't park the drive before powering off the last > time and suspect a head crash wiped the boot sector or something like > that. Now when I try to boot I hear the drive track but get this error. > DAMN. > > How can I get boots to restore a system? > > Yes, I suspect it ran up to six terminals as there are two controlled from > the cpu card and four controlled by a terminal controller card. > > > 512KB MEMORY KDF11B-BE ROM V0.9 CLOCK > ENABLED > > BOOT MENU > > Device Physical Valid Unit > Name Device Numbers > > DU DSA 0 1 2 3 4 5 6 7 > DL RL01/RL02 0 1 2 3 > DX RX01 0 1 > DY RX02 0 1 > DD TU58 0 1 > XH QNA 0 1 > MS TQK25/TS05 0 > > > TRYING UNIT DU0 > > ERROR UNIT DU0 > ERR 13 DRIVE NOT READY > WISH TO REBOOT [Y,(N)]? > > > -- > ----------------------------------------------------------- > Jeffrey S. Worley > Technical Services > Bits & Bytes Computer Services Inc. > 1979B Hendersonville Road > Asheville, NC 28803 > 828-684-8953 - voice 0900-1700 five days > 828-687-9284 - 24hr fax > Who is General Failure and why is he reading my hard disk? > Technoid(a)Cheta.net > ----------------------------------------------------------- >

26 years

PDP-11/23 deskside machine

by ethan_dicks＠yahoo.com

--- Megan <mbg(a)world.std.com> wrote: > > >I think he's talking about the opposite of what you mean. You mean using > >RAM as a disk, right? I believe he means using disk for RAM. Which is > >something I personally try to avoid like the plague! > > Actually, it gets more confusing with RT-11, since the term 'virtual > memory' refers to the address space a program can access... it has > nothing to do with disk space... I thought the physical/virtual memory distinction in this case was more of a PDP-11 processor concept than specifically RT-11. > The way to think of it is -- physical memory is the memory the machine > has while virtual memory is what a program can see at any one time. > And with 16 bits worth of address space, that maximum is 32kw (64kb) > at any one time... of course, you can remap portions of your address > space to elsewhere in physical memory, but you are always limited to > accessing 64kb at one time (128kb -- 64kb I-space and 64kb D-space if > you have a processor with separated I and D spaces) It used to bend my brain around backwards until I worked with RT-11 for a while. The problem is that the PDP-11 has mini-computer attributes, but is only 16-bit. Let's try a cross-platform comparison... Machine A: VAX running BSD. Machine B: PDP-11 running BSD. (Easy so far ;-) The PDP-11 has 2Mb of physical memory; the VAX has 2Mb of physical memory. Now comes the tricky part: the *virtual* address space for a program on the VAX is 4Gb, 32 bits. Since well-behaved PDP-11 programs don't twiddle memory management bits, the *virtual* address space for a program on the PDP-11 is 64K (or perhaps 128K if split I&D). Because of the physical nature of the beasts, the VAX has much more virtual address space than physical memory, but the PDP-11 is the other way around. It's just like Megan said, but I've added what might be a more familar model for comparison. It made me woozy at first, too. -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

Zork (was Re: WinCE (was teletype wanted.....))

by ethan_dicks＠yahoo.com

--- Cameron Kaiser <ckaiser(a)oa.ptloma.edu> wrote: > ::You're welcome. I know someone took the zdungeon image and split it > ::onto two C= floppies, grabbed a Z5 interpreter and played it on their > ::C-64. *That's* dedication. Me, I developed it on an old SPARCstation > ::that's probably classic by now. > > *You* developed it? :-P Yes. I developed zdungeon. It's a port to Inform directly from the MDL Zork sources. I did not say in the above paragraph that I wrote Zork. Perhaps that's the source of your ":-P"? > For the record, I run all my Infocom games on the 64. The black screen > interpreter is fast and can even preload the game into an REU, meaning it > will play entirely from memory. I never that that opportunity. When I was playing Infocom games on my C-64, all I had was a 1541. :-( -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

Zor (was Re: WinCE (was teletype wanted.....))

by ethan_dicks＠yahoo.com

--- Wouter de Waal <wrm(a)ccii.co.za> wrote: > WinCE boxen have one very neat use. Put Frotz on it and run old > Infocom games. I use my Palm for that. ;-) > Anyway, so I downloaded dungeon (what zork was called before it > was split in three to fit on a ~100K floppy) and I saw a familiar > name - Thanks Ethan! You're welcome. I know someone took the zdungeon image and split it onto two C= floppies, grabbed a Z5 interpreter and played it on their C-64. *That's* dedication. Me, I developed it on an old SPARCstation that's probably classic by now. http://penguincentral.com/retrocomputing/zdungeon/ (.z5 and .pdb format) -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

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test-drb March 2000