test-drb November 2005

test-drb@ccmp.vtda.org

255 participants
692 discussions

Pyramid - Re: Masscomp OS floppies / tape dump

by Mark.Brennan＠ie.fujitsu.com

Hi Ken/Andy/Bill, I have some old marketing Pyramid brochures as well as some videos now on DVD, If you want any copies drop me a line off topic. Regards markb. Mark Brennan System Engineer System Services FUJITSU Fujitsu House, South County Business Park, Leopardstown, Dublin 18, Ireland Tel: +353 (0) 1 2076900 Mobile: +353 (0) 87 2222326 Fax: +353 (0) 1 2161863 E-mail mark.brennan at ie.fujitsu.com Web: http://ie.fujitsu.com/ Fujitsu Services Limited, Registered in England no 96056, Registered Office 26, Finsbury Square, London, EC2A 1SL This e-mail is only for the use of its intended recipient. Its contents are subject to a duty of confidence and may be privileged. Fujitsu Services does not guarantee that this e-mail has not been intercepted and amended or that it is virus-free. -----Original Message----- From: Ken Seefried [mailto:ken at seefried.com] Sent: 24 November 2005 03:33 To: cctalk at classiccmp.org Subject: Pyramid - Re: Masscomp OS floppies / tape dump From: Bill Pechter <pechter at gmail.com> > I wish I had the sources for it and Pyramid's OS/x... We had a Pyramid 90x when I was at GaTech. Really nifty box, but exceptionally obscure now. Sorta like our Kendall Square Reasearch machine (KSR/1).

18 years, 5 months

More parts I need to replace on the VT100

by dwight.elvey＠amd.com

>From: "Julian Wolfe" <fireflyst at earthlink.net> > >The burned out resistors wouldn't have had anything to do with the blown >flyback or the shorted components I replaced on the video board? > Hi They could but you still need to look at the schematics to see how they may have done this. It is possible that the power supply failed in such a way that it blew up the parts on the video board. If so, simply replacing the resistors may make expensive smoke of your replacement flyback and other parts. It is always wise to evaluate the root cause of each known bad component. If the resistors are in series with the load, it is likely that the shorted parts on the video board may have caused the damage. If you see the resistors in other paths, look to see what in the supply might have also caused the failure. As an example, the series pass transistor in a regulator output stage could have gone short. This would cause the voltage to go way above what the flyback was designed for. It shorted some turns that cause the horizontal output transistor to go short from excessive power. Now a resistor that was used in series with the supply's output might smoke because there was nothing else limiting the current. This is only an example of thousands of possible problems. In other words, you need to look at the failures and justify the cause. Resistors burn up because they have excess power dissipated. This is caused by the voltage going up across them for some reason. Dwight

18 years, 5 months

"Market" for old macs?

by James＠jdfogg.com

> Now here's a tricky question: If the SE30 were the only mac > in my entire household, how would I procure an OS install on > diskette for it? The drive in that thing is the 800K > multi-speed beast, yes? Do you have a PC? Apple does (or did) offer the OS's on their website, and there were instructions about how to use various PC based programs to write them in a Mac 800K format from a PC drive. Somewhere I have the images and software because I've had to do this once.

18 years, 5 months

Cable and breakout panel kit for RQDX3

by dbetz＠xlisper.mv.com

Can anyone tell me the part numbers for the cable and breakout panel for the RQDX3 that allows it to be plugged into an RDxx MFM drive and an RX50 floppy drive? My understanding is that there is a ribbon cable that connects the RQDX3 module to some sort of panel that has places to plug in the cables that connect to the drives. I think the RDxx drive just uses standard PC type cables between the drive and this panel. Is that correct? Anyone know the part numbers for these parts? Thanks, David

18 years, 5 months

Cable and breakout panel kit for RQDX3

by ajp166＠bellatlantic.net

> >Subject: Cable and breakout panel kit for RQDX3 > From: David Betz <dbetz at xlisper.mv.com> > Date: Wed, 30 Nov 2005 16:21:39 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >Can anyone tell me the part numbers for the cable and breakout panel >for the RQDX3 that allows it to be plugged into an RDxx MFM drive and >an RX50 floppy drive? My understanding is that there is a ribbon >cable that connects the RQDX3 module to some sort of panel that has >places to plug in the cables that connect to the drives. I think the >RDxx drive just uses standard PC type cables between the drive and >this panel. Is that correct? Anyone know the part numbers for these >parts? I dont have the box with all the board and cables so it's all from memory. It carries a 50-class part number for BA23 boxes (mounted at the rear wall of the drive cavity) it's breaks the 50pin out to a floppy (rx50 or 33) and one drive (RDxx). Th board is only three or 4 connectors and nothing else so if you find the schematic you could make it easily. For the BA123 it an M9058 which looks like a Qbus board (it is) and it breaks the 50pin out to the mix of up to 4 drives(RDxx) and a floppy (RX50 or 33). The cables are 50pin IDC and the drive cables are 34 for floppy and hard disk and a narrow (22 or 26 pin) for the hard disk. The cables are nothing special (no PC half twists). The M9058 requires 5V power off the Qbus. Allison

18 years, 5 months

More parts I need to replace on the VT100

by Useddec＠aol.com

Sounds good to me. Any DEC stuff you don't need? Thanks, Paul

18 years, 5 months

More parts I need to replace on the VT100

by Useddec＠aol.com

I have the entire power supply for $75 Thanks, Paul

18 years, 5 months

IBM 1130 arrived from Austria

by bobalan＠sbcglobal.net

My IBM 1130 arrived today from Austria. It was packed very well, first wrapped in cardboard, then plastic wrap, then a sealed foil material, and finally a really strong crate. It spent a week in customs but they never even opened it up. The machine itself is quite dirty and will take some time to clean up, but looks complete and restorable. It came with a box of disk cartridges with unknown data or software. The main problem I have is that it's a 50 Hz machine. I assume the power supply could run on 60 Hz but the disk drive probably will not run correctly on 60 Hz. I believe the best thing is to start looking for a 60 Hz to 50 Hz power converter. Have a look at the unpacking at: http://www.dvq.com Bob

18 years, 5 months

cctech Digest, Vol 27, Issue 62

by charlesmorris＠direcway.com

>Dammit, I've got to get one of my PDPs going so I can play ADVENT again, >assuming my RL02s are still readable :) > >"a hollow voice says...." "FOOL" :) I have an RL02 image running on SIMH OS/8 and I have the ADVENT.SV and the other ADVENT.** files. But it still won't run. What pieces do I need to complete the ADVENT game? thanks Charles

18 years, 5 months

BASIC's question mark and PRINT

by terry＠terryking.us

Waaay...Back when I occasionally taught BASIC and APL, I always heard (Where?) that the "?" meant "What Is". Like: ?2+2 (What is 2 plus 2) ?2^16 and that this was intended to be used in "Immediate Mode". Some BASIC I used to use (Hmmm..??) would accept the "?" in program input lines, like: 100 ?"The Result is ";A but if you did LIST, it was shown as PRINT. That WAS a while ago... Regards, Terry King ...On The Mediterranean in Carthage, Tunisia terry at terryking.us

18 years, 5 months

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test-drb November 2005