Re: eBay: PDP-11/70 backplane?

> On Mar 23, 2017, at 2:07 PM, Henk Gooijen via cctalk > wrote: > > AFAIK, the 11/70 backplane is about that size, but it consists of *two* > separate backplanes with lots of fragile wiring between the 2 halves. > Further, I am “missing” a few MOLEX connectors on the top side. > My guess, this

Re: PDP-11/20 in Iowa (x3)

Yes, the MEM11 is about 1/2 assembled at the moment (I just haven’t had the time to finish it…you know WORK gets in the way). TTFN - Guy > On Mar 27, 2017, at 3:46 PM, Ethan Dicks via cctalk > wrote: > > On Mon, Mar 27, 2017 at 6:35 PM, Steve Malikoff via cctalk > wrote: >> After seeing this

Re: RTX-2000 processor PC/AT add-in card (any takers?)

> On Apr 10, 2017, at 11:18 PM, Lars Brinkhoff via cctalk > wrote: > > Chuck Guzis wrote: >> That is a bit of a surprise--in my experience it takes very little >> code to support Forth on any processor--that someone would build a >> dedicated chip for it is unusual. > > There are actually quit

IBM 4331 Mainframe

Just to let folks know that I finally moved the IBM 4331 Mainframe this past weekend from where it was currently stored to my shop. Pictures are here: https://www.flickr.com/gp/150223282@N04/NrX91K As can be seen in the pictures, it filled a 26’

Re: IBM 4331 Mainframe

ent: Monday, May 1, 2017 9:48:52 AM > To: 'Guy Sotomayor Jr'; 'General Discussion: On-Topic and Off-Topic Posts' > Subject: RE: IBM 4331 Mainframe > >> -Original Message- >> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Guy >>

Re: IBM 4331 Mainframe

> On May 1, 2017, at 10:49 AM, Bill Gunshannon > wrote: > > > Just hope you don't have a head crash. Had one when I was at Ft. > Ben Harrison (a long time ago, when the 4341 was just going into > production. We had one of the first!) and it sounded like the building > was coming down. Hate t

Re: IBM 4331 Mainframe 3 phase converter

Does anyone know how to convert KVa to 208v 3-phase currents and/or HP? IBM’s docs all specify power in KVa and most of the 3 phase converters (other than what Bob posted) seem to specify HP. If I’m going to spend serious coin on a phase converter (I think I found it online for ~$3k…ouch!), I

Re: IBM 4331 Mainframe 3 phase converter

> On May 4, 2017, at 8:04 AM, jim stephens via cctalk > wrote: > > > > On 5/4/2017 7:36 AM, Guy Sotomayor Jr via cctalk wrote: >> Does anyone know how to convert KVa to 208v 3-phase currents and/or HP? >> IBM’s docs all specify power in KVa and most of the

Re: IBM 4331 Mainframe 3 phase converter

> On May 4, 2017, at 8:59 AM, Jon Elson wrote: > > On 05/04/2017 10:36 AM, Guy Sotomayor Jr via cctalk wrote: >>> >> OK, that’s not helping. Here’s what I have (from IBM site planning docs >> GC22-7064-10 and GC22-7069-2): >> 3340-A2 DASD: 2.2 kVA 3-ph

Re: FTGH Large amount of DEC/Misc Classic computer hardware

I stopped by and picked up some stuff from Peter today. There’s a lot of stuff but I was only prepared to take a few items (I ended up taking a couple of tek ‘scopes too). I didn’t have time to sort through everything that was available but there’s a lot! He did mention that he has to be out of

Re: FTGH Large amount of DEC/Misc Classic computer hardware

> On May 10, 2017, at 12:20 PM, Noel Chiappa via cctalk > wrote: > >> From: Guy Sotomayor Jr > We need to move our business and I have about a ton of classic cimputer junk in the SFBA that need to go or get scrapped: > Symbolics 3645? (from Guy Sotomayer a few years back)

Re: RL02 to image file

> On Jun 2, 2017, at 1:16 AM, Christian Corti via cctalk > wrote: > > On Thu, 1 Jun 2017, Jay Jaeger wrote: >> On 6/1/2017 12:12 PM, Ethan Dicks wrote: >>> On Thu, Jun 1, 2017 at 7:59 AM, Jay Jaeger via cctalk >>> wrote: I can. I use a DR11 parallel port on an 11/24 to transfer the files

Re: Anybody has Control Data (CDC) disk packs for 841 and 844 disk drives to spare with?

> On Jun 4, 2017, at 12:02 PM, Chuck Guzis via cctalk > wrote: > > On 06/04/2017 11:47 AM, Al Kossow via cctalk wrote: >> >> >> On 6/4/17 3:35 AM, ANDY HOLT via cctalk wrote: >> >>> I would think it "not too difficult" to build a modern controller >> >> The electronics isn't the problem. Ge

Re: Serial keyboards

> On Jun 6, 2017, at 2:46 PM, Anthony DeStefano via cctalk > wrote: > > > >> On Jun 6, 2017, at 4:40 PM, dwight via cctalk wrote: >> >> If you look on the ebay for a dolch ethernet sniffer, you'll see >> >> many with no keyboard. >> >> Why would someone separate the keyboard from a box wh

Re: Serial keyboards

> On Jun 6, 2017, at 11:51 PM, Eric Smith wrote: > > On Tue, Jun 6, 2017 at 3:48 PM, Guy Sotomayor Jr via cctalk > mailto:cctalk@classiccmp.org>> wrote: > Yes, I’ve been dealing with the morons who strip the keyboards off of (now > rare) IBM 327x terminals, > cut

Re: Model M case screws

> On Jul 1, 2017, at 11:12 PM, Tony Duell via cctalk > wrote: > > >> >> The quality of tools has declined. It used to be that Sears Roebuck >> "Craftsman" hand tools were among the best and were sold with an >> unconditional warranty. Not so any more. > > The best spanners I have come acro

Re: tape baking

> On Jul 6, 2017, at 3:39 PM, Mark J. Blair via cctalk > wrote: > > >> On Jul 6, 2017, at 3:34 PM, jim stephens via cctalk >> wrote: >> >> >> >> On 7/6/2017 10:59 AM, Chuck Guzis via cctalk wrote: >>> Go figure. Perhaps nobody owns a line printer that takes continuous >>> forms any more.

Re: RK05 head alignment -- how difficult?

> On Jul 23, 2017, at 10:12 PM, Fritz Mueller via cctalk > wrote: > > Hey folks: > > As some of you know, I've recently restored a PDP-11/45, RK11-C drive > controller, and an RK05 drive. I'm now at the point where I'm working to > recover and archive the contents of the dozen or so RK05 pa

Re: Whole IBM System/34 available in unknown condition

Usual question. Where is it? TTFN - Guy > On Jul 25, 2017, at 1:36 PM, Benjamin Huntsman via cctalk > wrote: > > Anyone on here want a whole System/34? > > > Not mine, but I have contact details. The scrapper wants $800 for it local > pick up. > > > Let me know today, please. > > > Th

Re: Sperry UTS 40 on Ebay - Statesboro, Georgia

> On Aug 1, 2017, at 11:04 AM, Al Kossow via cctalk > wrote: > > > > On 8/1/17 10:49 AM, Noel Chiappa via cctalk wrote: > >> Any guesses as to what's going on? > > sellers not getting the prices they wanted. Isn’t that the point of having a reserve or setting the initial bid to your minim

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 2, 2017, at 11:32 AM, Aaron Jackson via cctech > wrote: > > Hi all, > > I will soon be getting a PDP-11/73 with 1MB of RAM, an RLV12 and DEQNA > controllers. I already have two RL02 and packs (which need a clean), > with thanks to Dave Wade on this list. > > Ideally I would like to r

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 3, 2017, at 7:10 AM, Rick Bensene via cctalk > wrote: > > That said, my PDP 11 is Unibus, and Unibus SCSI controllers are darned > expen$ive. They’re desirable and not a lot around. So it’s not terribly surprising. Having several different Unibus board designs in various stages (no

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 3, 2017, at 9:28 AM, Noel Chiappa via cctalk > wrote: > >> From: Guy Sotomayor Jr > >> Having several different Unibus board designs in various stages .. I can >> tell you that producing a *reliable* Unibus board is *not* going to be >> cheap. > > Why not? Just the size, gold-plated

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 4, 2017, at 1:14 AM, Christian Corti via cctalk > wrote: > > On Thu, 3 Aug 2017, emanuel stiebler wrote: >> On 2017-08-03 11:12, Al Kossow via cctalk wrote: >>> It would be nice, though if someone just finished a MSCP controller with a >>> CF or SD on it. >> >> I don't think there is

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 4, 2017, at 1:20 PM, Paul Koning via cctalk > wrote: > > >> On Aug 4, 2017, at 3:46 PM, Noel Chiappa via cctalk >> wrote: >> >>> From: David Bridgham dab at froghouse.org >> >>> I'm going to have enough fun with trying to implement the USB stack in >>> the FPGA >> >> ISTR discus

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 4, 2017, at 1:27 PM, ben via cctalk wrote: > > On 8/4/2017 12:49 PM, Warner Losh via cctalk wrote: >> On Fri, Aug 4, 2017 at 12:36 PM, Al Kossow via cctalk >> wrote: >>> >>> >>> On 8/4/17 11:14 AM, Warner Losh via cctalk wrote: most SD cards can easily handle 100-200 writes >>>

Re: packing and moving ...

Here’s what I did (I was moving my stuff myself but it should work with professionals too). I usually packed “smaller” items (terminals count as “small”) in bubble wrap and/or foam and then put it in a box. I then stacked boxes onto a pallet and strapped and “shrink wrapped” the pallets. I ha

Re: Bridge Communication Unibus Ethernet board?

> On Aug 30, 2017, at 9:18 AM, Al Kossow via cctalk > wrote: > > Also, I'm interested in archiving any surviving documentation for the first > generation Ethernet > stuff that I don't have up on bitsavers like Bridge and Ungerman-Bass. I have > some Interlan and Excelan > manuals, but I've no

Re: Solaris on PPC?

> On Aug 30, 2017, at 7:14 PM, Zane Healy via cctalk > wrote: > > > > Steve Jobs would have been at NeXT at that time, he didn’t come back to Apple > until ’97. > > Nearly 25 years later, my memory is pretty vague, however, around ’93 at the > FOSE trade show in Washington DC, IBM had a sy

Re: Solaris on PPC?

> On Aug 30, 2017, at 7:59 PM, jim stephens via cctalk > wrote: > > > > On 8/30/2017 7:31 PM, Guy Sotomayor Jr via cctalk wrote: >>> On Aug 30, 2017, at 7:14 PM, Zane Healy via cctalk >>> wrote: >>> >>> >>> >>>

Re: RIP Jerry Pournelle, the first author to write a novel on a computer Earl...

> On Sep 10, 2017, at 3:53 PM, Fred Cisin via cctalk > wrote: > >>> What word-processor programs existed prior to micros? >> WPS-8, of course. Wang had word processors in that same era. Then there >> is the MT/ST which I think is older still. And if you define it as >> "computer based tex

Re: cctalk Digest, Vol 39, Issue 15

> On Sep 15, 2017, at 11:52 AM, Fred via cctalk wrote: > > On Fri, 15 Sep 2017, cctalk-requ...@classiccmp.org wrote: > > >> Date: Thu, 14 Sep 2017 18:40:10 -0700 >> From: Ian Finder >> Subject: WTB: IBM 7060 aka MP3000 >> >> I'm looking for a small s390 machine to do some learning with. >> I

Re: WTB 3270 terminal

You realize that a CUT terminal (327x, 317x, etc) all require an “establishment controller” in order to work? Something like a 3174-1, 3174-11 or 3174-6x. Also 327x terminals are *hard* to find. Partly because the keyboard collectors (may they be forever damned) take the keyboards and scrap th

Re: WTB 3270 terminal

Cool! Mine are all older (MP3000, R390, 4331). I have a 3174-61 (with ethernet). I haven’t quite brought myself to getting a 3174-1 (there are several on ebay for not unreasonable prices). There are some 3178’s and 3179’s on ebay (at least the last time I looked). You *may* have to find a P

Re: formatting MFM drives on a IBM PC

> On Sep 26, 2017, at 10:20 PM, Chuck Guzis via cctalk > wrote: > > On 09/26/2017 09:53 PM, Mike Stein via cctalk wrote: > >> Ah yes, the interesting 11MB IMI 7710. Cromemco also used them in their >> Z-2H; I still have one somewhere, not a bad drive when it worked ;-) > > The really crazy

Re: formatting MFM drives on a IBM PC

> On Sep 28, 2017, at 9:04 AM, Jon Elson via cctalk > wrote: > > On 09/28/2017 10:31 AM, Chuck Guzis via cctalk wrote: >> And even the sector size on recent drives is fictitious. Larger drives use >> 4K sectors but "translate" them to the 512 byte standard. > So, for every write, it needs to r

Re: formatting MFM drives on a IBM PC

> On Sep 29, 2017, at 10:35 AM, Jules Richardson via cctalk > wrote: > > On 09/29/2017 11:20 AM, Jon Elson via cctalk wrote: >> I can only imagine a real AT would be even less likely to handle a drive >> over about 40 MB. > > I think the limit was normally 512MB in the old c/h/s addressing day

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

> On Oct 4, 2017, at 3:42 PM, Chuck Guzis via cctalk > wrote: > > On 10/04/2017 03:10 PM, Fred Cisin via cctalk wrote: > > Why on earth would WD have anything to do with it? They supplied the > controller, but not the drives. I used to have an early Maxtor ~50MB > 3.5" drive with bugs in the

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

> On Oct 5, 2017, at 2:53 AM, Christian Corti via cctalk > wrote: > > On Wed, 4 Oct 2017, Guy Sotomayor Jr wrote: >> Also, the early desktop PS/2 (model 50 and such) had the controller >> integrated on the drive and those were Maxtor as I recall. The PS/2 shipped >> in 1987 and we had the dr

Re: The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

> On Oct 5, 2017, at 11:26 AM, Paul Berger via cctalk > wrote: > > > > On 2017-10-05 12:57 PM, Guy Sotomayor Jr via cctalk wrote: >>> On Oct 5, 2017, at 2:53 AM, Christian Corti via cctalk >>> wrote: >>> >>> On Wed, 4 Oct 2017, Guy

Re: IBM 3270 controller emulation

It might be worthwhile to look at the source for hercules (370, 390, z/series) emulator since that includes support for 3270 terminals through tn3270. It’s pretty good since I can use actual 327x CUT terminals connected to a 3174 controller which connects to hercules emulating the mainframe. T

Re: eBay: MEMOREX 3693-2 & 3690-2 Disc Drive Mainframe IBM 3370-2 VINTAGE

> On Dec 15, 2017, at 4:04 AM, P Gebhardt via cctalk > wrote: > > > > >> eBay: MEMOREX 3693-2 & 3690-2 Disc Drive Mainframe IBM 3370-2 VINTAGE >> >> No connection to the seller, but they mention it will be scrapped if no >> takers. $150 Buy it now. >> https://www.ebay.com.au/itm/MEMOREX-36

Re: eBay: MEMOREX 3693-2 & 3690-2 Disc Drive Mainframe IBM 3370-2 VINTAGE

To let folks now, I’ve acquired the drives and am currently making arrangement for one of the local collectors to pick them up if I’m unable to and store them until I’m able to get them to my place. So they’ve been saved and I’m looking forward to being able to attach them to my 4331. TTFN - G

Re: PDP-8/e

I just use ‘cat’. Seems to work fine. ;-) TTFN - Guy > On Dec 7, 2018, at 4:57 AM, Pete Turnbull via cctalk > wrote: > > On 07/12/2018 09:59, Rod G8DGR via cctalk wrote: > >> OK now I need a little help. >> Does anybody know of a terminal emulation program that will simulate the >> reader

Re: Interesting RK8E fault

> On Dec 8, 2018, at 8:50 PM, Josh Dersch via cctalk > wrote: > > On Sat, Dec 8, 2018 at 7:24 PM Paul Anderson via cctalk < > cctalk@classiccmp.org> wrote: > >> Are you using the same pack for the 8 and the 11 >> > > I connected the drive I normally use with my 11/40 to the 8/e for testing

Re: Interesting RK8E fault

> On Dec 8, 2018, at 10:36 PM, Josh Dersch wrote: > > On Sat, Dec 8, 2018 at 10:33 PM Guy Sotomayor Jr > wrote: > > > On Dec 8, 2018, at 8:50 PM, Josh Dersch via cctalk > > wrote: > > > > On Sat, Dec 8, 2018 at 7:24 PM Paul Anderson v

Re: Core memory emulator using non volatile ram.

FRAM or MRAM. I make extensive use of them in my projects. Everspin has a few (all SMT and 3.3v). As I recall they run ~$20/ea for 4Mb (512K x 8 or 256K x 16). TTFN - Guy > On Dec 15, 2018, at 1:22 AM, Rod G8DGR via cctalk > wrote: > > I have an idea to produce an MM-8 clone using RAM tha

Re: Core memory emulator using non volatile ram.

> On Dec 15, 2018, at 12:51 PM, Jon Elson via cctalk > wrote: > > On 12/15/2018 02:45 PM, Anders Nelson via cctalk wrote: >> Serial flash has an endurance between 10K-100K writes per cell so I think >> that would break down quickly. Wear-leveling on a serial device would be >> very slow... >>

Re: Core memory emulator using non volatile ram.

> On Dec 15, 2018, at 1:18 PM, Warner Losh via cctalk > wrote: > > On Sat, Dec 15, 2018, 1:51 PM Jon Elson via cctalk wrote: > >> On 12/15/2018 02:45 PM, Anders Nelson via cctalk wrote: >>> Serial flash has an endurance between 10K-100K writes per cell so I think >>> that would break down qu

Re: Core memory emulator using non volatile ram.

> On Dec 15, 2018, at 7:09 PM, allison via cctech wrote: > > On 12/15/2018 01:01 PM, Guy Sotomayor Jr via cctech wrote: >> FRAM or MRAM. I make extensive use of them in my projects. >> >> Everspin has a few (all SMT and 3.3v). As I recall they run ~$20/ea for 4Mb >> (512K x 8 or 256K x 16).

Re: Core memory emulator using non volatile ram.

> On Dec 16, 2018, at 8:21 PM, allison via cctech wrote: > > On 12/15/2018 03:51 PM, Jon Elson via cctech wrote: >> On 12/15/2018 02:45 PM, Anders Nelson via cctalk wrote: >>> Serial flash has an endurance between 10K-100K writes per cell so I >>> think >>> that would break down quickly. Wear-l

Re: Core memory emulator using non volatile ram.

> On Dec 16, 2018, at 10:40 PM, Chuck Guzis via cctalk > wrote: > > On 12/16/18 11:21 AM, Paul Koning wrote: > >> If you simply want non-volatile memory, the obvious answer is SRAM with >> battery backup and a small FPGA to do the interfacing. > > I proposed nvRAM - CMOS SRAM backed by cel

Re: Core memory emulator using non volatile ram.

> On Dec 17, 2018, at 10:52 AM, Noel Chiappa via cctalk > wrote: > >> From: Paul Koning > >> For that matter, core memory details such as destructive read weren't >> visible to the CPU > > Umm, not quite. If you'd said 'core memory details such as destructive read > weren't visible to the _

Re: More old stuff incoming

Having worked at IBM “in the day”, the “official” reason (near as I could tell) was that IBM didn’t want to anthropomorphise computers. So it was never “memory”, it was always “storage”. So we didn’t have RAM or ROM, we had storage or ROS. Disks were called DASD. Main boards were called “pla

Re: Motorola M88K books & user manuals (looking for)

> On Jan 1, 2019, at 2:00 PM, ben via cctalk wrote: > > On 1/1/2019 8:58 AM, Carlo Pisani via cctalk wrote: >> hi >> on DTB we are designing a RISC-ish CPU, code name "Arise-v2"(1). >> We are using the MIPS R2K and the RISC-V as the reference. >> In the end, it will be implemented in HDL -> FPG

Re: Motorola M88K books & user manuals (looking for)

> On Jan 1, 2019, at 2:35 PM, Carlo Pisani via cctalk > wrote: > >> I was never a fan of RISC architecture as does not fit the standard high >> level language model. Everybody wants a 1 pass compiler, thus the RISC >> model. If you are doing your own RISC model, you might consider a model >> t

Re: Microcode, which is a no-go for modern designs

> On Jan 2, 2019, at 10:22 AM, Chuck Guzis via cctalk > wrote: > > On 1/2/19 8:02 AM, Jon Elson via cctalk wrote: > >> Random logic instruction decode was a REAL issue in about 1960 - 1965, >> when computers were built with discrete transistors. The IBM 7092, for >> instance, had 55,000 tra

Re: off topic - capatob - saratov2 computer Russsian pdp8? HELP

I think it’s also telling that the IETF uses the term octet in all of the specifications to refer to 8-bit sized data. As “byte” (from older machines) could be anything and is thus somewhat ambiguous. It *may* have been the IBM 360 that started the trend of Byte == 8-bits as the 360’s memory (

Re: off topic - capatob - saratov2 computer Russsian pdp8

> On Jan 6, 2019, at 6:10 PM, Jon Elson via cctalk > wrote: > > On 01/06/2019 01:29 PM, Bob Smith via cctalk wrote: >> Sorry, thanks for playing but >> Actually half of a WORD is a BYTE, whatever the numerical length is. >> Ready for this,half of a BYTE is a NIBBLE. > Well, no. On 32-bit mach

Re: Bogus "account hacked" message

I’ve been getting those messages for a few months now and nothing bad has happened yet. ;-) TTFN - Guy > On Jan 8, 2019, at 12:03 PM, Peter Coghlan via cctalk > wrote: > > > About two hours ago, I received an email to the address I only use for > cctech/cctalk. > > It claimed my email acco

Re: OT? Upper limits of FSB

Some architectures (I’m thinking of the latest Intel CPUs) have a small loop cache whose aim is to keep a loop entirely within that cache. That cache operates at the full speed of the instruction fetch/execute (actually I think it keeps the decoded uOps) cycles (e.g. you can’t go faster). L1 c

Re: IBM in TX

> On Jan 11, 2019, at 9:58 AM, William Donzelli via cctalk > wrote: > >> Looks like the "Mainframe" is an IBM Series/1 which is not a Mainframe, and >> I would say has limited appeal to collectors as there are few resources out >> there as the software is all fully licenced so its had to make

Re: 11/70 - original or 570 model more desirable?

I have both (though the H960 variant needs restoration). I actually find that the corporate blue cabinets to be easier to deal with. One aspect is that it’s a “package” rather than multiple H960 racks. Why is that important? Because the corporate cabinets did nice things like provide cable runs

Re: BASIC for HP 1000, 21xx series

I’m glad I had kept it around. I purchased a copy of the listing directly from HP while I was in High School so that I could study how it worked and “hack” on it to make some changes. I had kept the listing in a special binder. After college I had misplaced the binder and thought it was lost.

Re: Another DEC UNIBUS signal adapter: UniProbe

Did you happen to take a look at my UA11? It’s different in that it goes into an SPC slot. TTFN - Guy > On Feb 26, 2019, at 11:07 PM, Jörg Hoppe via cctech > wrote: > > Hi, > > most people dealing seriously with older PDP-11s have found means to monitor > the UNIBUS traffic. > My latest ap

Re: Control Console, but not PDP-10

You should talk to Carl as he’s created (or far along in the process) of a DSKY to interface to an actual AGC that’s being restored (there are a number of videos on-line of the restoration effort…mostly done by converting a hotel room into a lab). TTFN - Guy > On Apr 11, 2019, at 10:59 PM, Etha

Re: DEC disc pack inspection unit on eBay

From looking at the accessories and the spindle, I believe that this is for examining multi-platter packs such has those for RP03/4 and RP06 and the like. It’s a useful find for folks who have those drives and packs and wish to actually use them. ;-) TTFN - Guy > On May 10, 2019, at 8:59 AM,

Re: Abandoned FACOM system in Italy?

> On May 29, 2019, at 8:00 AM, Al Kossow via cctalk > wrote: > > > > On 5/28/19 7:39 PM, Evan Linwood via cctalk wrote: > >> hopefully someone takes an interest! >> > > considering 3178 keyboards are over $1000 on eBay, I expect the keyboard > collectors to take every keyboard that > is

Re: Anyone have any info on the obscure MX11 PDP-11 option?

One place to look and see if there was anything, is to look for any hardware information about C.MMP at CMU. Since C. had a mix of modified 11/20s and 11/40s, there *may* be some information on what they did. Unfortunately I don’t think it would map directly because C. had (as I recall) 1.2MW

Re: CDC Cyber 180-960 available

Sorry, I passed this along with the information I was given. I just wanted to make sure that it was saved rather than scrapped if at all possible. TTFN - Guy > On Jun 28, 2019, at 3:31 PM, William Donzelli wrote: > > HOLD THE BOAT! > > It is still not clear if the 960 is to be kept at Vanden

Re: "half-dollar"/"50 cent piece" Was: Recovering the ROM of an IBM 5100 using OCR

> On Jul 1, 2019, at 2:10 PM, Fred Cisin via cctalk > wrote: > > > >>> A "Dime" is one tenth of a dollar. Or ten cents. Or $10 worth of drugs. >>> The coin is 17.91mm diameter, and the smallest coin in circulation. >>> A "Nickel" is five cents. or $5 worth of drugs. >>> The coin is 21.21

Re: IBM Series/1

I have what appears to be a nice one…I just haven’t had time to do anything with it yet. It does have 2 discs (I think one is 40MB and the other is 300MB). There is a big label on the system that says “DEV’T TOOLS” so I’m hopeful that there’s some interesting SW on it. TTFN - Guy > On Aug 2,

Re: Control Data 9766 drive on epay

Well, crap. I got rid of my 2 9766’s and all the packs that I had for them a couple of years ago for nothing what this guy is asking for his. ;-) I probably still have a pile of heads for them (but they’d probably go to the guy who purchased the drives/packs from me). What are folks using thes

Re: Identification of an HP minicomputer

It’s a 9-slot variant that says HP-1000 M-Series on the front panel. From what I can tell the front panel appears to be the same as any of the other HP-1000 series. What I’m trying to figure out is what the actual CPU configuration is without disassembly (which I still need to figure out) so t

Re: Identification of an HP minicomputer

labels), as well as the front > card cage. The front card cage is accessed by unlocking the panel and > removing the cover on the right side over the card cage. That's where the > memory boards live. > > On Mon, 12 Aug 2019, Guy Sotomayor Jr via cctalk wrote: > >>

Re: Identification of an HP minicomputer

Oldtech/HP/2108A/HP2108A-8L.jpg (my model 2108A) >>> >>> Early models had the power switch on the back panel, while later models >>> had it behind the front panel. >>> >>> It sounds like you might have a later model M. It would be helpful to see >

Re: Identification of an HP minicomputer

#x27;t say "M-Series" >>>>> on the front panel, and had a different lock than the later models: >>>>> >>>>> http://q7.neurotica.com/Oldtech/HP/2108A/HP2108A-8L.jpg (my model 2108A) >>>>> >>>>> Early models had the

Re: Identification of an HP minicomputer

Fun! I have 4 HP minis at the moment: 2116C that was running the last time I checked 2 2114B that are in various states of “not working”. Interestingly the most promising one (e.g. the one that hasn’t had various parts clipped or otherwise buggered) is where I can’t get it to power up at all (n

Re: Identification of an HP minicomputer

>>>>> TTFN - Guy >>>>>> >>>>>> >>>>>>> On Aug 12, 2019, at 3:29 PM, Mike Loewen via cctalk >>>>>>> wrote: >>>>>>> >>>>>>> >>>>>>> The origina

Re: Electr* Engineering

I can attest to that. ;-) Where I went (CMU) the CS department grew out of the Math department…while I was there the only degree that the CS department granted was PhD. So everyone else majored in something else (EE in my case…which had a bunch of digital stuff but still focused on a lot of t

Re: GW-DEC-1: A New DEC Prototyping Board

Speaking from experience from having done a few Unibus boards now (none of them available yet unfortunately) that providing a general Unibus interface on a quad board will consume a reasonable amount of the board space and limit flexibility on which driver/receiver/transceiver parts that can be

Re: Identification of an HP minicomputer

Thanks Marc. What I’ve done is about all I have time for at the moment. Between work and prep’ing for potential fire evacuations (they’re expecting ~300 wild fires in my area this fire season…we’ve only had about 6 so far…so I expect *a lot* more soon) all of my time is gone. :-( TTFN - Guy

Re: Identification of an HP minicomputer

> On Aug 15, 2019, at 6:57 PM, Mark Linimon wrote: > > On Thu, Aug 15, 2019 at 02:27:16PM -0700, Guy Sotomayor Jr via cctalk wrote: >> Between work and preparing for potential fire evacuations (they're >> expecting ~300 wild fires in my area this fire season: we'

Re: S/23 machine update card

The uCode in the S/23 is 8085 assembly code that is contained within the ROMs. The ROMs have the ability to be patched and the card you’re referencing is used to hold those updates. So without that card you’re not able to apply any ROM updates (which are loaded each boot). It’s been long enough

Re: S/23 machine update card

> On Aug 19, 2019, at 9:35 AM, Dennis Boone wrote: > >> The uCode in the S/23 is 8085 assembly code that is contained within >> the ROMs. The ROMs have the ability to be patched and the card >> you’re referencing is used to hold those updates. So without that >> card you’re not able to apply

Re: MIPS I-IV instruction set standards

Are you aware of “See MIPS Run” by Sweetman? That’s what I always used as a reference for the early MIPS stuff. TTFN - Guy > On Feb 28, 2017, at 3:16 AM, Eric Smith via cctalk > wrote: > > On Mon, Feb 27, 2017 at 11:59 PM, Angelo Papenhoff via cctalk < > cctalk@classiccmp.org> wrote: > >> I'

Re: Shipping from Europe to USA

> On Aug 25, 2019, at 2:05 AM, Noel Chiappa via cctalk > wrote: > >> From: Jon Elson > >> I have NEVER had even the SLIGHTEST damage with FedEx, even their >> ground service. This could just be statistical chance > > This. I once had FexEx Ground destroy the entire packaging of a shipment (o

Re: SMD disks

I’m actively working on SMD and ESDI emulators. However, given my work schedule this is a long term project. :-( TTFN - Guy > On Aug 30, 2019, at 10:56 AM, Jonathan Haddox via cctalk > wrote: > > With SMD disks even harder to come by than MFM disks, has there been any > plug-in replacement

cctalk@classiccmp.org

The only thing that I believe would have used these would have been C.MMP. It had 1.2MB of memory on it when I was there. TTFN - Guy > On Sep 16, 2019, at 10:45 AM, Al Kossow via cctalk > wrote: > > I would be interested in putting up the later docs > I wonder if Guy remembers what these wer

cctalk@classiccmp.org

“wall off” the failed component can cause diagnostics to be run to either isolate the problem further or determine that the failure is no longer present. TTFN - Guy > On Sep 16, 2019, at 10:59 AM, Paul Koning wrote: > > > >> On Sep 16, 2019, at 1:52 PM, Guy Sotomayor Jr via

cctalk@classiccmp.org

11/40’s were pretty ubiquitous at CMU when I was there and at least as far as I could tell, were all configured pretty much the same (in that they all had custom writable control store). I personally dealt with 3 different sets of 11/40s: A single 11/40 with WCS that I used for doing some image

cctalk@classiccmp.org

> On Sep 17, 2019, at 8:17 AM, Stefan Skoglund wrote: > > mån 2019-09-16 klockan 11:17 -0700 skrev Guy Sotomayor Jr via cctalk: >> >> And that’s just the HW. Hydra (the OS that ran on C.MMP) was a >> capability based system (so you needed the proper capability to

Re: [Simh] Fwd: VAX + Spectre

> On Sep 18, 2019, at 12:42 AM, Liam Proven via cctalk > wrote: > > On Wed, 18 Sep 2019 at 02:19, Paul Koning via cctalk > wrote: >>> ... >> Speaking of timing, that reminds me of two amazing security holes written up >> in the past few years. Nothing to do with the Spectre etc. issue. >>

Re: [Simh] Fwd: VAX + Spectre

> On Sep 18, 2019, at 9:59 AM, Chris Elmquist wrote: > > On Wednesday (09/18/2019 at 09:19AM -0700), Guy Sotomayor Jr via cctalk wrote: >> >> >>> On Sep 18, 2019, at 12:42 AM, Liam Proven via cctalk >>> wrote: >>> >>> On Wed

Re: Early Univac Commercial

Yea, I recall having to take that test. I almost didn’t because my degree is EE but then they realized I was applying for SW positions. Go figure! ;-) Worked there for 17+ years. TTFN - Guy > On Sep 20, 2019, at 8:52 AM, Chuck Guzis via cctalk > wrote: > > On 9/20/19 8:16 AM, William Sudb

Re: LISP implementations on small machines

> On Oct 3, 2019, at 10:26 AM, Paul Koning via cctalk > wrote: > > > >> On Oct 3, 2019, at 12:39 PM, Chuck Guzis via cctalk >> wrote: >> >> On 10/3/19 9:01 AM, Noel Chiappa via cctalk wrote: >> >>> The PDP-6 and KA10 (basically a re-implementation of the PDP-6 architecture) >>> both had

Re: 3270 controller simulation

Yes, I have my 3174 communicating with Hercules (as well as my MP3000). TTFN - Guy > On Nov 18, 2019, at 8:45 AM, Al Kossow via cctalk > wrote: > > > > On 11/18/19 8:22 AM, Grant Taylor via cctalk wrote: > >> I believe the *Remote* 3174 (et al.) is one of these devices from IBM. > > The bi

Re: FPGA based 3174 replacement

I have several Zynq boards that I’m using (or will be) for other projects but having a replacement for the 3174 would be nice. TTFN - Guy > On Nov 18, 2019, at 9:51 AM, Dave Wade via cctalk > wrote: > > Chris, > I have several Spartan boards, no Zync... > ... but would be interested to see ho

Re: Converting C for KCC on TOPS20

I think the challenge will be does binutils (where nm, objcopy and objdump live) support for the object file format used by TOPS20. I haven’t looked at the TOPS20 object file format but it seems like the best approach would be to have the C compiler generate symbols as it normally would and wri

Re: SMD disk specifications

Thanks Eric, I somehow missed that one. TTFN - Guy > On Dec 13, 2019, at 11:42 AM, Eric Smith wrote: > > On Fri, Dec 13, 2019 at 10:55 AM Guy Sotomayor via cctalk > mailto:cctalk@classiccmp.org>> wrote: > I’ve been trying to find *detailed* specifications (mainly detailed signal > timings) fo

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