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101090 discussions

PDP11 - RQDX1 standalone format utility?

by Fred.van.Kempen＠microwalt.nl

Christos, > I would like to do a bad sector scan on a RD52 connected to a RQDX1 > controller (The machine is a pdp11/73 without OS) prior to installing > BSD2.11.Is there a standalone program like zrqch0(standalone > version of zrqc from the xxdp package - only for RQDX3) that can be > downloaded directly to the pdp via vtserver and recognizes the RQDX1, > i.e. a version of zrqb or something similar? In "XXDP V2.5 Notes" (http://www.chd.dyndns.org/pdp11/xxdp25.notes.txt) I read the following: ZRQA RQDX or RUX50 RD/RX EXERCISER ZRQB RD51/52 DISK FORMATTER RQDX1 DISK DRIVE SUBSYSTEM ZRQC Formattable Winchester (RDnn) or Floppy (RX33) Drives RQDX3 Disk Formatter Utility ZRQD RQDX or RUX50 RD/RX EXERCISER ZRQE RQDX3 EXERCISER ZRQF RQDX3 RX33 Format Utility ZRQG RQDXn RD/RX Disk Summary Diagnostic Now, although my knowledge of XXDP is minimal, the above would make me believe that ZQRB works with the RQDX1 (only), and that the ZQRC is the one that only works on the RQDX3. Anyone know more about this? --f

23 years, 2 months

Monitor Cable for TI-Explorer

by asholz＠topinform.com

Hello all, I'm looking for a monitor-cable (optical) and a mouse for the ti-explorer. Andreas

23 years, 2 months

recommendations on Sbus DAS FDDI?

by rschaefe＠gcfn.org

Any one to avoid? It'll end up in an Axil SS2 clone routing a broadband connection into the FDDI backbone, unless someone can convince me that it's a horrible idea. Thanks! Bob

23 years, 2 months

large disk platters?

by julesrichardsonuk＠yahoo.co.uk

>> To my knowledge the largest hard drive platter was 24". > > Platters of at least 36" diameter have been made; they were used > on ILLIAC IV. hmm, that's sounds about the right size. I remember the lecturer standing behind the platter and it came up to around waist height, which is where I got the 1m estimate from. thanks to all for the thoughts! Jules Everything you'll ever need on one web page >from News and Sport to Email and Music Charts http://uk.my.yahoo.com

23 years, 2 months

Need Help: NEC PowerMate Portable SX

by rigdonj＠cfl.rr.com

I picked up one of these today and it had multiple problems but I finally got it to boot but so far I can't get a display on the built in screen. I'm not sure but I'm wondering if the switch settings on it are correct. Does anyone have the switch settings for one of these? Joe

23 years, 2 months

HELP! MFD Checker II

by fmc＠reanimators.org

Joe <rigdonj(a)cfl.rr.com> wrote: > I just bought this > <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=25399&item=2507112537> > off of E-bay. Obviously it's some kind of disk drive tester. I > opened it up and the entire front panel is hand wired but I also > found a commercail circuit board in it. On the board it says "MFD > Checker II" "Sony" "Made in Japan". Does anyone know anything about > a MFD checker? Um, I'm thinking Sony diskette drive part numbers start(ed?) with MFD. Yep, it looks to me like you got yourself a drive tester. That wouldn't get me so excited as to forget to hit return once in a while, but I guess it means you have a new way to play with the stiffy drives in all that HP gear. Congratulations! -Frank McConnell

23 years, 2 months

DosPlus for the Model IV

by msspc＠rev.net

Hey guys! You may want to check out the Computer News 80 website at www.cnpublishing.com for information on software for the TRS80, as well as TRS80 Model 4s for sale etc. -- Frank On Feb 20, 10:45am, Al Hartman wrote: > Subject: Re: DosPlus for the Model IV > > Does anyone have a copy of DOS-Plus for the TRS > > model 4 that they can send me? I picked up a 4 last > > weekend with no SW or docs and I already have > > DOS-Plus SW and manuals for the model 1. > > > > Joe > > Joe, > > I don't have DosPlus for the Model IV that I know of > (I might, somewhere..). But, I can recommend highly > Multidos for the Model IV. > > I don't have the link handy, but if you search for it, > you can find it. > > It's still availble for purchase in the $30.00 range > last time I checked, and it is an Alternate OS for the > TRS-80 that incorporates a lot of the strong points of > DosPlus, including 80 Column support while in non CP/M > mode. > > It's a nice OS, and the DISK BASIC is faster and > smaller and more feature rich than most of the other > ones available for the TRS-80. > > I remember porting my Copy of Connection-80 over to it > (we renamed our custom version, Nybbles-80), and it > was MUCH faster under Multidos than under Newdos/80, > TRS-DOS or DosPlus, and I was able to take advantage > of several MultiBASIC features to make it nicer... > > Boy, those were the days. > > I'm on the lookout for an LNW-80 Computer that works > to set up a system again. I'm going to keep watch in > April at the Trenton Computer Festival for a Model IV > or Model III in the Flea Market. > > Regards, > Al > >-- End of excerpt from Al Hartman -- ==== M O N T V A L E S O F T W A R E S E R V I C E S P. C. ==== Clayton Frank Helvey President Montvale Software Services, P. C. P.O. Box 840 Blue Ridge, VA 24064-0840 United States of America Phone 540.947.5364 ===================================================================

23 years, 2 months

HELP! MFD Checker II

by Innfogra＠aol.com

In a message dated 2/20/03 8:35:48 PM Pacific Standard Time, rigdonj(a)cfl.rr.com writes: > > > Do you have a Sony checker? If so, what's this about *70* track drives? > I already have a nice Brikon 723 drive tester made by Brian. I'm not sure > if it handles the 600 RPM drives but it does handles 3", 3.5", 5 1/4" and > 8" drives! > You are very lucky to get a Sony tester. IIRC the early Sony drives were very nonstandard and there were several different kinds. I am sure the 70 track goes back to the very earliest Sony floppies there are others on the list that can address this better than I. I can't remember who made the Hard drive tester that I have. I got several >from Intel when they were getting rid of the 310 stuff. It covered most of the early MFM hard drives and was built in a small blue box about 12" square. A standalone process selected from a menu of drives, plug in the drive, after a while a report was printed out. The name started with an A and was three letters. IIRC. It is close to the surface in the storage locker so I will note when I get there. You got a nice find. Hang on to it. Paxton Astoria, OR

23 years, 2 months

Atari 400 Power Supply

by gehrich＠tampabay.rr.com

I need a power supply for an Atari 400 computer and have the following to choose from. Does anyone know which if any to use with the 400: Atari Power Supply Model CO 14319 IP 120vac 60hz 18.5w OP 9vac 15.3va Atari Power Supply Part Number C010472 IP 120v 60hz 9w OP 9v dc 500ma Atari Power Supply part number C016804 IP 120v 60hz OP 9vac 31VA Atari Power Supply part number C017945 IP 120v 60hz 50w OP 9vac 31VA Atari Power Supply part number CA14748 IP 120v 60hz 20w OP 15VA Atari Power Supply part number C016353 IP 120v 60hz 11w OP 9v DC 500ma for Atari 2600 Atari Plug In Power Supply - Part Number C061515 IP 120vac 60hz 7.5va OP 9vac 500ma Atari Power Supply part number C018187 IP 120vac 60hz 38va OP9.3vdc at 1.95A

23 years, 2 months

HELP! MFD Checker II

by Innfogra＠aol.com

Just the thing needed to check out those sony drives in the old HP equipment. Congratulations, Joe, you have a floppy drive tester for early Sony 3 1/2 inch floppys. I have a similar hard drive tester. Paxton Astoria, OR

23 years, 2 months

Pictures (DEC, calculators, etc) and Questions

by root＠parse.com

I've put together some pictures of parts of my collections of various things that I figured I'd brag about^H^H^H^H^H^H^H^H^H^H share with everyone on this list :-) There are pictures of various DEC PDP's, tons of pictures of boards, some antique test equipment, and some antique electronic calculators. My question is, does anyone have schematics for any of the non-DEC equipment? Specifically, GR1683, HP3440/3445, HP9100, and Tektronix 909? If so, please let me know! I'd be happy to host PDFs or GIFs or whatever form they might take... Here are the URLs: PDPs: http://www.parse.com/~pdp8/ Other: http://www.parse.com/~rk/collecting/ Enjoy! Cheers, -RK -- Looking for Digital Equipment Corp. PDP-1 through PDP-15 minicomputers! Robert Krten, PARSE Software Devices +1 613 599 8316. Realtime Systems Architecture, Consulting and Training at www.parse.com

23 years, 2 months

Let the witch trials begin! Re: OT: Re: Going OT Re: (no subject)

by cb＠mythtech.net

>I'm a U.S. citizen (well, I might not be after the SS, Shrubs Spooks, >reads this... they might revoke my citizenship, even though my >ancestors came over here several hundred years ago) You know, I was just thinking about that myself. What would they do with someone like me, who's ancestors predate the US being here?!? I can get that someone who is a naturalized citizen they can kick back to whatever country they came from... but what are they going to do to me? Kick me back to Virginia? (one of my older ancestors was the given the Virginia colony to run) >The U.S. military had no right to do that, whether >overseas or over here... anyone who lands on someone's _private >property_ and then has the audacity to order the owners to leave, as >well as ordering people living in neighboring properties to leave, I don't know about Australia, but I suspect if you dig thru the laws, there is some exclusion here in the US that does allow for this. I base that on the fact that in the fire service we DO have the right to evict people from an area in the name of safety. For instance, if we have a gas main break, we can go house to house and forcably remove people in the effected area if we feel that their life is in danger. They don't have to consent, and we don't need a court order (although I suspect if we did it without damn good reason, we could probably be sued later). We can also keep custody of the property until we are "finished" with the scene. Here in NJ that is defined as the reasonable amount of time to handle the event and any followup investigation OR until the last EMS person leaves the scene, whichever happens first. -chris <http://www.mythtech.net>

23 years, 2 months

TRS DOS-Plus?

by rigdonj＠cfl.rr.com

Does anyone have a copy of DOS-Plus for the TRS model 4 that they can send me? I picked up a 4 last weekend with no SW or docs and I already have DOS-Plus SW and manuals for the model 1. Joe

23 years, 2 months

Floppy drive for Zenith 100

by acme＠ao.net

> OR you can get a copy of MS-DOS 4.00 and patch it to run on the Z-100. Jeez, Joe, now I'm really gagging. MS-DOS on a Z-100? Yuck. Later -- Glen 0/0

23 years, 2 months

large disk platetrs?

by grg2＠attbi.com

The original IBM RAMAC disk platters were several feet across: "The 350 Disk File consisted of a stack of fifty 24" discs that can be seen to the left of the operator in the above picture. The capacity of the entire disk file was 5 million 7-bit characters, which works out to about 4.4 MB in modern parlance. This is about the same capacity as the first personal computer hard drives that appeared in the early 1980's, but was an enormous capacity for 1956. IBM leased the 350 Disk File for a $35,000 annual fee." The Control Data 808 disk drive also used platters that were at least thet large.

23 years, 2 months

Fwd: [zx81] ZX81 users meeting in four weeks

by acme＠ao.net

Anyone in Europe (or elsewhere) care to join us? Later -- Glen 0/0 From: Peter Liebert-Adelt <P.Liebert(a)t-online.de> To: Glen Goodwin <acme(a)ao.net> Subject: [zx81] ZX81 users meeting in four weeks Date: 02/20/2003 5:20 PM > Hi ZX81 users > > May be it's a litte bit far away from you, but you should know: > > 7th ZX-TEAM-meeting will take place from friday, 21st of march 2003 at 18.oo > pm) > local time, until sunday 23rd of march 12.00 (noon) in the heart of Germany > in a little village called Dietges, which is loacted near the town of Fulda. > For more informations please mail or vistit our homepage: http://www.zx81.de > > Good by(t)e, "sinclairly" yours > > Peter > > > ----------- ZX81 MAILSERVER INFO ------------------------------------ > To WRITE a new message, send your message to mailto:zx81@jarasoft.net > To UNSUBSCRIBE send a message to mailto:listserv@jarasoft.net > with "unsubscribe zx81" in the SUBJECT of your message. > To SUBSCRIBE send a message to mailto:listserv@jarasoft.net > with "subscribe zx81" in the SUBJECT of your message. > ---------------------------------------------------------------------

23 years, 2 months

TRS DOS-Plus?

by acme＠ao.net

Hey Joe (and listmembers) -- You and I discussed this on the phone today, but just for the general edification of the listmembers: If you need *any* kind of software for TRS-80s, check out www.trs-80.com. All of the major OSes are there, as well as manuals, emulators, etc. Later -- Glen 0/0 > Does anyone have a copy of DOS-Plus for the TRS model 4 that they can send > ? I picked up a 4 last weekend with no SW or docs and I already have DOS-Plus > and manuals for the model 1. > > Joe

23 years, 2 months

Victor Computer anyone?

by beegee＠eastlink.net

We had several Victor 9000's. They ran CP/M and a proprietary MS-DOS. They had built-in codec. They actually predated the IBM PC back in 1980. They were the best available computers at the time, when the TRS-80 was prevalent on the market. My dad still may have one on his closet shelf. I threw mine away when I bought my first PC clone, a 4mhz, 4 mb ram 386SX.

23 years, 2 months

large disk platters?

by julesrichardsonuk＠yahoo.co.uk

I just randomly remembered the other day that when I was at uni one of the computing lecturers one day rolled out an enormous disk platter to demonstrate how hard disk technology has changed over the years. The platter was pretty huge - around 1m in diameter. Any ideas as to what system it may have come from? Im just curious really - I've not seen much really old hardware up close, but the impression I got from the pictures I've seen is that drive technology didn't typically use platters *that* large. (and hell, this beats talking about the war :) cheers Jules Everything you'll ever need on one web page >from News and Sport to Email and Music Charts http://uk.my.yahoo.com

23 years, 2 months

DEC RC25 Drives

by Fred.van.Kempen＠microwalt.nl

Owen: the RC25 are DEC's attempt at creating funny things. They are MSCP disks (connect to UDA50 or KDA50) with an SDI bus. They are actually two drives in a single coffin- one winchester drive (13MByte) and a removable cartridge drive, also 13MB. So, one could back on the winchester to the removable, and so on. I have one here.. just no cartridge. --f > -----Original Message----- > From: Owen Robertson [mailto:univac2@earthlink.net] > Sent: Wednesday, February 19, 2003 6:26 PM > To: Classic Computer Mailing List > Subject: DEC RC25 Drives > > > A few weeks ago, I got a rather nice PDP-11/34 (34A, turnkey > front panel) > from a scrap yard. They had two identical systems being used > in some sort of > electronic testing devices. I only got one system because the > other one > looked like it had been hit by a forklift a couple times. It > wasn't in great > shape, so I salvaged some cards from it (CPU, memory, DELUA, drive > controller, UNIBUS utility stuff...). > > My system is in very nice shape though. And along with the > CPU, I also got > two RC25 drives, along with controllers and cables. I've > never seen these > before. Can anyone tell me anything about them? They look > like nice drives, > but I've never really heard much about them. > > Anyway, this will be my third 11/34. Of the other two, I > still have (and > very much like) one, and one has been passed on to another > list member. > Anyway, more questions on recent acquisitions to come > shortly, I'm sure. > > -- > Owen Robertson

23 years, 2 months

FYI: 25th Anniversary of Ward Christensen's BBS

by Robert_Feldman＠jdedwards.com

But note that the Climet claim is qualified by "a box in which a phone handset could be placed". How were the Bell modems interfaced? -----Original Message----- From: Eric Smith [mailto:eric@brouhaha.com] Sent: Thursday, February 20, 2003 2:16 PM To: cctalk(a)classiccmp.org Cc: allain(a)panix.com Subject: Re: FYI: 25th Anniversary of Ward Christensen's BBS I wrote about (binary) data transfer by modem: >> At least as early as 1965 IBM sold equipment that could do this, John Allain wrote: > Some more date/a: > ""the first model of the first commercial modem," a box in which a phone > handset could be placed, allowing a computer to say "beep beep" to > another over long distances. Lee was almost right. He actually had the > second model of the "magnetic/acoustic coupler," manufactured for > Tymshare, Inc. by Climet Instruments about 1966" > -- > http://membres.inforoots.org/dguardiola/Lee_Felsenstein/CMP-mails.htm The Bell 103A modem was introduced in 1962. I suspect that it was the first commercial modem. The date that's harder to place is when the 103A was first used for computer-to-computer data transfer, as opposed to teletype-to-teletype or teletype-to-computer communication.

23 years, 2 months

DosPlus for the Model IV

by alhartman＠yahoo.com

> Does anyone have a copy of DOS-Plus for the TRS > model 4 that they can send me? I picked up a 4 last > weekend with no SW or docs and I already have > DOS-Plus SW and manuals for the model 1. > > Joe Joe, I don't have DosPlus for the Model IV that I know of (I might, somewhere..). But, I can recommend highly Multidos for the Model IV. I don't have the link handy, but if you search for it, you can find it. It's still availble for purchase in the $30.00 range last time I checked, and it is an Alternate OS for the TRS-80 that incorporates a lot of the strong points of DosPlus, including 80 Column support while in non CP/M mode. It's a nice OS, and the DISK BASIC is faster and smaller and more feature rich than most of the other ones available for the TRS-80. I remember porting my Copy of Connection-80 over to it (we renamed our custom version, Nybbles-80), and it was MUCH faster under Multidos than under Newdos/80, TRS-DOS or DosPlus, and I was able to take advantage of several MultiBASIC features to make it nicer... Boy, those were the days. I'm on the lookout for an LNW-80 Computer that works to set up a system again. I'm going to keep watch in April at the Trenton Computer Festival for a Model IV or Model III in the Flea Market. Regards, Al

23 years, 2 months

HP 85 part needed

by rhahm＠nycap.rr.com

Hi, Does anyone have an extra clear plastic paper tearer they could part with? (Sits on top by the printer cover) Thanks, RH

23 years, 2 months

rqdx1 standalone format

by chpap＠ics.forth.gr

I would like to do a bad sector scan on a RD52 connected to a RQDX1 controller (The machine is a pdp11/73 without OS) prior to installing BSD2.11.Is there a standalone program like zrqch0(standalone version of zrqc from the xxdp package - only for RQDX3) that can be downloaded directly to the pdp via vtserver and recognizes the RQDX1 , i.e. a version of zrqb or something similar?

23 years, 2 months

Floppy drive for Zenith 100

by acme＠ao.net

Aw, come on, Joe! Enlighten the guy! (I know too) Glen 0/0 > At 09:57 AM 2/19/03 -0500, you wrote: > >Hello, > > > > Do you know if it is possible to install a 1.44MB floppy drive in a Zenith > >100? > > > > Thank you. > > > > Ken. > > > > Yes I know. > > Joe

23 years, 2 months

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