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101090 discussions

Commodore 64, 128 and TI/99 still in original boxes

by sales＠elecplus.com

I have one of each in their original boxes, tested working, extra books/manuals, programs, etc. Also a number of C64 that have issues, and some untested TI99s. LOTS of AC adapters for Atari, Commodore machines. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-792-3400 phone 830-792-3404 fax sales at elecplus.com AOL IM elcpls

11 years, 12 months

CAPS-11 on a TU-60 tape found

by cube1＠charter.net

I might, but will be out of town until sept. I may even have that same tape - I have a drive and a number of tapes. "E. Groenenberg" <quapla at xs4all.nl> wrote: > >I found a TU-60 tape with what is apparently CAPS-11. > >The tape label has the following texts : >DEC-11-OTSYA-A-TC >CAPS-11 V01-02 >SYSTEM CASSETTE > >A loose label lists the (apparent) contents date 09-aug-73 : > >CTLOAD SYS 08-aug-73 >CAPS11 S8K 09-AUG-73 >PIP SRU 09-AUG-73 >EDIT SLG 09-AUG-73 >LINK SRU 09-AUG-73 >ODT SLG 09-AUG-73 >PAL SRU 09-AUG-73 >DEMO PAL 09-AUG-73 > >Is the anybody who is able to image this tape so the community >can us it? > >Ed > >-- >Dit is een HTML vrije email / This is an HTML free email. >Zeg NEE tegen de 'slimme' meter. >

11 years, 12 months

CRT Question - Old Calculator

by rickb＠bensene.com

Hello, all, I am in the midst of restoration of a very old (1964-ish) electronic calculator called the Wyle Laboratories Scientific Model WS-02. This is a transistorized electronic calculator that uses a magnetostrictive delay line for register storage, and a CRT display for showing the working registers and memory registers. The CRT is driven by sine/cosine signals to generate fully-formed stroke-style digits. I don't know if it's magnetically or electrostatically deflected...is there any easy way to tell? There are some coils around the neck of the CRT, but they are not as large as I'm used to seeing on CRT's of this size (8"). The question that I have is that I want to test out the power supply circuitry to make sure that all is healthy there. I have removed the logic module from the machine (the logic module contains all of the calculating and display generation logic, and comes out as a unit). I have also disconnected the video driver board. The connector at the back end of the CRT is unplugged. There are a couple of wires that go to the coils around the neck of the CRT, but they are connected to the video driver board, which is disconnected. The high voltage connector from the flyback is still connected to the CRT. At this point, I've traced out the main logic voltages (+12, -12) and a -30V supply that are used throughout the machine. I want to slowly bring up the power supply with a Variac and monitor the voltages and ripple to see if the power supply is still healthy. However, I'm concerned about having the high voltage supply connected to the CRT without any other connections on it? Could the high voltage supply be hurt because it may be missing signals it needs to oscillate properly? Could this hurt the CRT? I don't know enough about the way this kind of stuff works to know if I could cause any problems, either with the CRT, or the high voltage supply. I'd appreciate any guidance that may be given prior to trying to light this thing up. Thank you, Rick Bensene The Old Calculator Museum http://oldcalculatormuseum.com

11 years, 12 months

Tape Oven (was Re: An 8 Inch Disk Lathe)

by michael.99.thompson＠gmail.com

> > From: Al Kossow <aek at bitsavers.org> > Date: Sat, 16 Aug 2014 12:21:57 -0700 > Subject: Re: Tape Oven (was Re: An 8 Inch Disk Lathe) > On 8/15/14 11:02 AM, Al Kossow wrote: > > Well, there is a new winner in the "most evil tape category" that makes > MRX V look good in comparison. > > Wabash (who would have guessed..) > > The Wabash is BAD > I would think that 3M Blackwatch would be at the top of your list. -- Michael Thompson

11 years, 12 months

Late 09 iMac loaded- Forgive me its not vintage

by falco＠ihug.co.nz

It's obvious - two people used it at once for a couple of years. Presumably they had half the keyboard each, and fought over the mouse. On 18/08/2014 1:08 p.m., Chris Pye wrote: > On 18 Aug 2014, at 10:25 am, Steven Landon [1] wrote: > >> Replacing my iMac finally after 7 years of good use, Ive decided to upgrade > How do you get 7 years use out of a machine that's only 5 years old? Links: ------ [1] mailto:slandon110 at gmail.com

11 years, 12 months

CAPS-11 on a TU-60 tape found

by quapla＠xs4all.nl

I found a TU-60 tape with what is apparently CAPS-11. The tape label has the following texts : DEC-11-OTSYA-A-TC CAPS-11 V01-02 SYSTEM CASSETTE A loose label lists the (apparent) contents date 09-aug-73 : CTLOAD SYS 08-aug-73 CAPS11 S8K 09-AUG-73 PIP SRU 09-AUG-73 EDIT SLG 09-AUG-73 LINK SRU 09-AUG-73 ODT SLG 09-AUG-73 PAL SRU 09-AUG-73 DEMO PAL 09-AUG-73 Is the anybody who is able to image this tape so the community can us it? Ed -- Dit is een HTML vrije email / This is an HTML free email. Zeg NEE tegen de 'slimme' meter.

11 years, 12 months

Displaywriter 8" filesystem?

by david＠attglobal.net

I've imaged a little stack of Displaywriter 8" disks and am starting in on filesystem organization. With an EBCDIC filter I can see the data plain as day. I've also got experience stitching together the DisplayWriter files that come from the DOS-based system, so if I could get the file allocation scheme figured out and lift off whole files from these disk images, I bet the same conversion code would work on the resulting data. I've browsed the manuals on Bitsavers, but of course IBM never intended their users to actually look at the bytes on the disk. So none of the information was geared towards revealing the file allocation secrets. Is there any reference material out there to help me decode (or find) the file allocation structures? - David

11 years, 12 months

FS: Late 09 iMac loaded- Forgive me its not vintage

by slandon110＠gmail.com

Replacing my iMac finally after 7 years of good use, Ive decided to upgrade The specs are as follows Core 2 Duo 3.06ghz 14GB RAM 500GB Hard Drive Adobe Creative Suite 6 Final Cut Pro 7 Studio Final Cut Pro X Office 2011 Its a nice machine great for video editing and document processing and other tasks, Ive used it to work with my vintage machines. Asking $750 or best and can deliver to VCFMW/ECCC

11 years, 12 months

PDP-11/05 debugging tips?

by derschjo＠gmail.com

Hi all -- As I mentioned a few days back, I recently picked up an 11/05 that's in need of some troubleshooting. This weekend I've started getting more acquainted with the details of the CPU set (reading through the schematics and the various manuals (which are quite thorough, fortunately.)) Before I start getting too deep with this, I figured I'd see if maybe I'm overlooking something simple -- I'm relatively green with Unibus systems. So here's what I'm seeing: - At power-up, the system comes up in a halted state and I can load addresses from the front panel switches into the address register, and these are correctly loaded -- no stuck bits, etc. - Toggling "Start" causes the "Run" light to go on and the system seems to be doing... something (the address/data lamps flicker). Attempting to halt the machine at this point does not work, but if I have the "Enable/Halt" switch set to "Halt" and hit "Start" again the machine does stop and the "Run" light goes out. - Hitting "Exam" while halted has no effect (no data is loaded, addresses are not incremented), and seems to lock the machine up -- I can no longer load addresses via the front panel. Hitting "Start" still puts the machine in the "Run" state outlined above, and once halted again, "Load Addr" works again. - Hitting "Cont" while halted puts the machine back in the "Run" state regardless of the state of the "Enable/Halt" switch. So it definitely looks like the Run state control logic should be looked at... The machine's configuration is very basic: the CPU set (M7260/M7261), an 8KW core board set (G110, G231, H215), and an M903C Unibus terminator. I've verified that these are all in the correct slots. Bus grant cards are in the D slot of all four Unibus slots (and inserted in the correct orientation, I hate those things...) Thus far I've tested the power supply and voltages are spot on with acceptable ripple. AC LO L and DC LO L are correctly going high after power on, so that shouldn't be causing issues. I've gone through and cleaned everything including the edge connectors. (I left the core plane undisturbed, it's already been banged around enough...) I double-checked the backplane for bent pins that might be touching other pins. I've checked the processor clock, and it's running properly and at the correct rate (310ns). I've run the machine with just the processor set with the same behavior. Any other simple things I should check before I get seriously involved with this thing? Fortunately I have a set of KM-11 replicas I got from Guy Sotomayor a few years back so that will help immensely in debugging... Thanks as always, Josh

11 years, 12 months

Where to Get "Professional" Packing Done for Shipping a

by c＠meron.cc

On 08/15/2014 04:56 AM, jwsmobile wrote: > Any unit needs to be evaluated for internal components which may not handle > shipping stresses and disassembled if possible before crating. CRT's should > never be left with the factory mounts anymore for instance. On the back of that, are CRTs best shipped with the screen facing down, or forwards? Presumably it's also wise to unplug the neck board from the CRT and secure it. What do people do about the HV transformer? They're normally bulky/heavy and can lack support other than the solder connections on the PCB. I?ve shipped tons of stuff through The UPS Store. They always do a great job packing.? Cameron

11 years, 12 months

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