test-drb

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101090 discussions

by CLASSICCMP＠trailing-edge.com

>> I noticed that ( I looked a 3 Disk II's that my school had, and they all >> had the grooved disc). I don't have the drive anymore (never was able to >> get it to work), but All I really remember is the round cable, the red >> apple (it was unusual), and the Disk II-type black front. If I remember >> correctly, the case was black, too. I don't remember a data cable (at >AH HA! I was just going to suggest that perhaps you had a Bell & Howell >drive and perhaps the internal mechanism on that model was different. I >think Kai has some black Disk ]['s handy that he can perhaps check on for >us. The situation is complicated by the large number of "Disk ][ clones" that were produced in the early 80's. From personal experience and advertisements, I'd say there were at least 30 different clones at the time. Most of them used very different-looking, often half-height, 5.25" drives, but many used the same drive mechanics as a real Disk ][ and had case designs almost exactly like a real Disk ]['s. The only real way to tell in this case whether you're dealing with a clone or not is to look for an Apple sticker on the box and/or the Apple legend on the drive's PC board. (While some of the clone makers also stole Apple's PC board layout, I've never seen any that went so far as to steal Apple's copyright and part number!) Tim.

27 years, 11 months

RX50 / RX33 Questions related to PDP-11's

by CLASSICCMP＠trailing-edge.com

> At this point, if you don't have >a floppy in the RX50, the DEC BOOT ROMS will hard boot >an alternate CSR for UNIT 0, PARTITION 0. The situation depends greatly on *which* version of the DEC boot ROM's are in use. Some automatically search for an alternate CSR, some allow you to specify it explicitly. The situation is complicated by the fact that for most DEC OS's, the alternate DU CSR is 160334, while for RT-11, SYSGEN will certainly suggest something very different for the default: > 230. What is the CSR (register) address for the second port (172144)? While most DEC DU bootstraps "sniff" through 172144, not all do. Luckily, we don't have to argue about the situation, as Zane told us which bootstrap he is using: >When I tell the system to boot from >DUB0 or DUB1 which is the terminalogy that the WQESD controller expects So any discussion of DEC bootstrap revisions seems to be quite irrelevant :-) For many purposes, I much prefer the WQESD boot scheme. It avoids all the confusion caused by the many, many different DEC DU bootstraps! -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology Voice: 301-767-5917 7328 Bradley Blvd Fax: 301-767-5927 Bethesda, MD, USA 20817

27 years, 11 months

RX50 / RX33 Questions related to PDP-11's

by allisonp＠world.std.com

< admit) with a RX50 attached, it will access the floppy drives, this is b < evidenced by my using a cleaning floppy in the drive (made it easy to he < the drive being accessed). RX50s are rather loud. ;) < When I try using a pair of Teac floppies I've converted to RX33's using < information I found on Sunsite I'm not really sure it tries to access th < How do you cable RX33's? I set them to Drive 0 and 1, as the docs said < and then used a Y-splitter for the power with a standard PC floppy cabl < (do I need one without the twist?). Can you use RX50 floppies to boot < system with RX33 drives? Ok, TEAC FD55GFV (RX33) or TEAC FD55F (RX50). The cable must not have twist and drive select is 1 for the first, I only use one on the system as I have 3 RD52s. IF the drive speed select and density select jumpers are set right it (using RQDX3) will sense what the media is and operate correctly using the DU boot. None or all of this will be true for the WQESD controller, I don't know it. < Will RT-11 boot off of a floppy drive at CSR 17760334? I've tried with < both the Boot disk from my RX50 distribution set, and a RX50 boot disk t < I made using PUTR. I've a sinking feeling that having two disk controll < is confusing RT-11. 17772150 it the default first device and the default bootable. If there is two the second will be at 17760334. For RQDXs the LUN jumper must corospond to how many units. I believe PDP-11 ROM BOOT expects to boot from the default first (*2150) unless the DU.sys driver has been changed for the second address. RT-11 itself will boot/run on anything you have a driver for. Megan would know for sure. I've never found it necessary to have two MSCP disk controllers in a PDP-11 (I was using them in the vax instead!). < Is it possible to create a Bootable TK50 with RT-11 that can be used to < the install? That's oblique. It's possible to make a bootable RX50(or RX33) that is complete enough to be a system! To install from that is trivial as it's really INITing the target drive (assuming its LL formated) and copying everything to it then doing a copy/boot operation. Not much majik unless the version of RT has been really tweeked. Allison

27 years, 11 months

MMD-2

by ddameron＠earthlink.net

Hi Bill and all, At 11:18 PM 10/12/98 -0400, you wrote: > >Hey, I've got a couple of E&L MMD-2's here. These are neat little >8080 educational SBC's. Hex keypad, "function" keypad, 7-segment >LED's, and three sets of 8 LED's for I/O ports 0, 1, 2. Includes >a cassette interface, bus expansion connector, serial interface, >and even an EPROM programmer for 2708/2716's. Most impressive! > >But I didn't get any sort of manuals with them. I've figured >out most of the obvious stuff, but it would be nice to know the >format expected by the "load" function, the meaning of a few >unlabelled switches/jumpers, the meaning of "BRL HI" and "BRL LO", >and so on. > Do you know if it's described in any magazine article? There is a 3 part series about the first MMD in the May, June, July 1976 Radio Electronics. It is an 8080 based system with 24 output bits and LED's, keypad, a solderless breadboard, 256 bytes ram (2x 2111), and 256 bytes rom (1702A). The article has the schematic and "monitor" listing and sample programs. I almost bought one a few years ago, but the price was too much, USD $150. By the way, the kit price back in 1976 was $350, assembled $500. -Dave

27 years, 11 months

Commodore "PET 2001-8" Vintage Computer

by pete＠dunnington.u-net.com

On Oct 13, 17:26, Matt Pritchard wrote: > Subject: RE: Commodore "PET 2001-8" Vintage Computer > It doesn't appear to be in this version (Outlook 97). I'm sure there is an option for plain text, just not in quite the same place. > > -----Original Message----- > > From: Kai Kaltenbach [SMTP:kaikal@MICROSOFT.com] > > Sent: Tuesday, October 13, 1998 4:45 PM > > To: Discussion re-collecting of classic computers > > Subject: RE: Commodore "PET 2001-8" Vintage Computer > > > > If you're running Outlook, do Tools.Options/Mail Format, choose Rich Text > > from the drop-down list box instead of HTML. Plain text would be even better -- please don't post RTF, HTML, or encoded stuff to the list (or anywhere by mail, for that matter, unless you *know* the recipient wants it that way for some specific reason. Mail is an plain-text medium). -- Pete Peter Turnbull Dept. of Computer Science University of York

27 years, 11 months

Commodore "PET 2001-8" Vintage Computer

by pete＠dunnington.u-net.com

On Oct 13, 15:48, van lincoln wrote: > Subject: RE: Commodore "PET 2001-8" Vintage Computer > I can read it. I use eudora light. > At 02:41 PM 10/13/98 -0500, Matt Pritchard wrote: > >Am I the only person who can't read messages made up of tons of HTML junk? > >> To: Discussion re-collecting of classic computers > >> Subject: Commodore "PET 2001-8" Vintage Computer > >> > >> This message uses a character set that is not supported by the Internet > >> Service. To view the original message content, open the attached > >> message. If the text doesn't display correctly, save the attachment to > >> disk, and then open it using a viewer that can display the original > >> character set. << File: message.txt >> No, there are plenty of us here who either cannot, or do not wish to, read HTML in mail. Quite often we just silently ignore it. -- Pete Peter Turnbull Dept. of Computer Science University of York

27 years, 11 months

RARE!!! (ebay)

by sinasohn＠ricochet.net

At 12:33 PM 10/13/98 -0700, you wrote: >> Since I have never seen the 8800BT, I'm sure it is rare, at least he says a >> number of times that this stuff is RARE. Shipping and handling including >Well... I don't know if I would consider it THAT rare... (at least not Oh come on, doncha know that anything sold on ebay *must* be extremely rare? It's in the terms of service... But in all honesty, in areas other than old computers, one can find some great prices on ebay. (Do a search for auctions I've won recently and you'll see some amazing deals on donald duck stuff. 8^) --------------------------------------------------------------------- O- Uncle Roger "There is pleasure pure in being mad roger(a)sinasohn.com that none but madmen know." Roger Louis Sinasohn & Associates San Francisco, California http://www.sinasohn.com/

27 years, 11 months

Chat Thursday (fwd)

by yowza＠yowza.com

[This is from another list, but it might be interesting. -- Doug] ---------- Forwarded message ---------- Date: Tue, 13 Oct 1998 01:25:42 -0400 From: JAY RESPLER <JRespler(a)SURFNJ.NET> To: CALCLIST-L(a)techunix.technion.ac.il Subject: Chat Thursday Folks- Do you have an old Hermes in your basement? Do you collect ribbon tins or just like to talk about it? Have an old pinwheel calculator? When someone says they own a dusty old PET computer, do you find your interest perk up? This Thursday at 9 p.m.EDT (8 p.m. Central, 6 p.m. Pacific) we will be hosting a live chat with Jay Respler, an antique collector from Freehold, N.J. We hope that you will take this opportunity to visit with other people on the Internet about antique office equipment and even not-so-old office equipment now considered antique (the Commodor 64, for example). To enter, go to the main chat page: http://www.asaypub.com:8080/~chatrooms and click the mouse on the "Yesterday's Office Chat." You will be asked for some information, such as your e-mail address. Be there. You will likely enjoy it. Please feel free to contact me if there are any problems getting to the chat. You will need to have frames "on" in order for the chat to work properly. We also ask that people observe our chat policies of being courteous, waiting for an answer before responding, etc. Thanks. /Neal/ Neal McChristy, editor Repair, Service & Remarketing News P.O. Box 670 Joplin, Mo. 64802 mailto:nmcchristy@asaypub.com Ph. (800) 825-9633, ext. 238 FAX (417) 781-0427 -- Regards, Jay Respler -- JRespler(a)surfnj.net Sky Views: http://njsurf.com/skyviews/ Satellite Tracker * Early Typewriter Collector Freehold, New Jersey To unsubscribe send the command: unsubscribe CALCLIST-L to LISTSERV(a)techunix.technion.ac.il The email address of this list is : CALCLIST-L(a)techunix.technion.ac.il

27 years, 11 months

Off-Topic Wierdness

by roblwill＠usaor.net

Did anyone notice that that "welcome screen" from their GUI looked like something a kit would have drawn in MS Paint? -- -Jason (roblwill(a)usaor.net) ICQ#-1730318 ---------- > From: Uncle Roger <sinasohn(a)ricochet.net> > To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> > Subject: Re: Off-Topic Wierdness > Date: Tuesday, October 13, 1998 8:42 PM > > At 09:23 PM 10/12/98 -0400, you wrote: > >Would someone please check out accpc.com/home0.html#About, and enlighten > >some of us "historically challenged" individuals as to how much of their > >"history" is possibly truth vs. B.S.? > > They claim they had a windowing product in late '73/early '74 which is > supposedly long before the Alto -- But I thought the Alto was earlier than > that? > > I dunno for sure, but it sure sounds like a bunch of BS to me. > > > --------------------------------------------------------------------- O- > > Uncle Roger "There is pleasure pure in being mad > roger(a)sinasohn.com that none but madmen know." > Roger Louis Sinasohn & Associates > San Francisco, California http://www.sinasohn.com/ >

27 years, 11 months

Picture up (RE: Microsci HAVAC)

by roblwill＠usaor.net

I noticed that ( I looked a 3 Disk II's that my school had, and they all had the grooved disc). I don't have the drive anymore (never was able to get it to work), but All I really remember is the round cable, the red apple (it was unusual), and the Disk II-type black front. If I remember correctly, the case was black, too. I don't remember a data cable (at least built on to it, like the Disk II) though. I can't remember if the round cable was for power, and there was a plug for data, or if the round cable was for power/data. I do remember that the plug was cut off the round cable, though. It was about as round as a AAA battery. I think it had five conductors. -- -Jason (roblwill(a)usaor.net) ICQ#-1730318 ---------- > From: Sam Ismail <dastar(a)ncal.verio.com> > To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> > Subject: Re: Picture up (RE: Microsci HAVAC) > Date: Monday, October 12, 1998 11:00 PM > > A round cord? The Disk ]['s had a flat ribbon cable that connected to the > Disk ][ Controller. They got their power thru this cord. All the Disk > ]['s I have on hand (about 5) have the multi-colored Apple logo. Although > the solid red Apple sounds distinctly familiar on some piece of equipment. > > To be safe, I'll say as far as I know, and as far as the internals of > every Disk ][ I've seen go, they've all had the grooved disk for > positioning the head. >

27 years, 11 months

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