Re: Looking for PDP-8 G603 "Memory Selector Matrix" boards (or dec T-2052 transformers)

On 04/15/2017 08:15 PM, Charles Dickman via cctalk wrote: Do we know who made the transformers originally? I maintain some old industrial hardware designs that used pulse transformers from the mid-60's and I may still have catalogs and/or data sheets. Some of the big names are Pulse

Re: Silent 700 thermal paper

My experience with thermal fax paper is that printed copy is best preserved. I discovered a couple of years ago, that manufacturers' faxed copies of data from the early 1990s have faded almost to unreadability. Not black, but faded, as with disappearing ink Storage was in a file folder in a

Re: Silent 700 thermal paper

On April 15, 2017 8:23:18 PM CDT, Paul Berger via cctalk wrote: >It would not hurt it to try, at worst the printout would be faint, how >well the paper survives depends a lot on how it was stored. Direct >sunlight definitely will degrade the paper that is why it is

Re: Silent 700 thermal paper

On Sat, 15 Apr 2017, Paul Berger via cctalk wrote: It would not hurt it to try, at worst the printout would be faint, how well the paper survives depends a lot on how it was stored. Direct sunlight definitely will degrade the paper that is why it is often in black bags. If the paper is 8.5"

Re: Silent 700 thermal paper

It would not hurt it to try, at worst the printout would be faint, how well the paper survives depends a lot on how it was stored. Direct sunlight definitely will degrade the paper that is why it is often in black bags. If the paper is 8.5" wide you could use the roll paper for thermal fax

Re: Looking for PDP-8 G603 "Memory Selector Matrix" boards (or dec T-2052 transformers)

Do we know who made the transformers originally? I maintain some old industrial hardware designs that used pulse transformers from the mid-60's and I may still have catalogs and/or data sheets. -chuck On Thu, Apr 13, 2017 at 7:01 PM, Pete Lancashire via cctalk wrote: >

Silent 700 thermal paper

How long does it last? I have two Silent 700 terminals that have not been used since the mid-80's and a box of thermal paper. Is the thermal paper any good or should I get some more before I try to play with the terminals. Is paper that wide available new and not NOS? I bought some TTY paper and

C, STL, primitive languages that live on and on ... Re: Does anyone here know Siemens STL?

There are a lot of smart people here with wide ranging experiences, so I like to ask questions from time to time that get more to philosophy. So "If C is so evil why is it so successful" was one of those questions. The answer I see is that it is the path of least resistance to the most successful

Nat Semi 32016 Genix backup floppies available

As I may have mentioned a while back, I have dug out my backup floppy disks from my National Semiconductor Genix system. In 1984 or so, I built a clone of a Logical Microcomputer 32016 system and copied the OS. I used it for a while, but it was maddeningly slow. This system used a Multibus

Re: Harry Huskey, Bob Taylor -- sad news

some, but not enough Harry did an oral history at CHM when he became a fellow, as did Bob On 4/15/17 8:34 AM, Jon Elson via cctalk wrote: > Wow, that's amazing. I had no idea he was still around! I hope he wrote up > some memoirs or left stories. > > Jon

Re: Harry Huskey, Bob Taylor -- sad news

https://www.nytimes.com/2017/04/14/technology/robert-taylor-innovator-who-shaped-modern-computing-dies-at-85.html?_r=0 > On Apr 14, 2017, at 10:00 PM, Evan Koblentz via

Re: WTB: DEC Rainbow Expansion Memory

On Sat, Apr 15, 2017 at 9:56 AM, william degnan via cctalk wrote: >> >> >> Rainbow Memory Extension Option Installation Guide:EK-PCMKE-IN >> >> …Two versions of the memory extension option are available: a 64 K byte >> option (part number PC1XX-AA) and a 192K byte

Re: WTB: DEC Rainbow Expansion Memory

> > > Rainbow Memory Extension Option Installation Guide:EK-PCMKE-IN > > …Two versions of the memory extension option are available: a 64 K byte > option (part number PC1XX-AA) and a 192K byte option (part number > PC1XX-AB). The memory option is installed in the J6 connector … > … Both

Re: MISE and M3SE

> On Apr 15, 2017, at 11:05 AM, Bill Gunshannon via cctalk > wrote: > > > Well, now that I know there are TRS-80 afficianados here i wonder if there > are any MISE/M3SE experts? I have both running here now and really like > them. But, back in the "good ole days" I

Re: Harry Huskey, Bob Taylor -- sad news

On 04/15/2017 12:00 AM, Evan Koblentz via cctalk wrote: Two computer industry pioneers died in the past week. Harry Huskey worked on ENIAC, the Pilot ACE, SWAC, and the Bendix G-15. He was also known for helping overseas universities start their CS programs. Harry was 101. Wow, that's

MISE and M3SE

Well, now that I know there are TRS-80 afficianados here i wonder if there are any MISE/M3SE experts? I have both running here now and really like them. But, back in the "good ole days" I was priomarily a DOSPLUS user with a little NEWDOS80 once in a while. I was wondering if it is possible to

Re: WTB: DEC Rainbow Expansion Memory

On Apr 13, 2017, at 3:20 PM, Warner Losh via cctalk wrote: > On Thu, Apr 13, 2017 at 12:00 PM, shad via cctech > wrote: >> Hello, >> I'm in the pretty same condition, I have a Rainbow 100B without memory >> expansion. >> Not sure however, about