Re: Programming language failings [was Re: strangest systems I've sent email from]

> On Apr 30, 2016, at 6:39 AM, Diane Bruce wrote: > > On Fri, Apr 29, 2016 at 03:55:35PM -0700, Chuck Guzis wrote: >> Those who claim that there's not much difference between C and assembly >> language have never run into a true CISC machine--or perhaps they rely >> only on libraries someone els

Re: MEM11A status update

I had planned on starting to assemble the first of the prototypes this weekend but alas it was not to be. My email server died (SW not HW) early last week and I took this opportunity to move my email over to a hosting provider. I spent most of Friday and most of Saturday and Sunday (today) m

Re: Bags for RK05 disk cartridges

I have a bunch of the originals (with packs in them) but they are showing their age (seams splitting). I’ll have to look at the U-Line bag to see how that works. TTFN - Guy > On May 11, 2016, at 3:10 PM, Jack Rubin wrote: > > Now that I've cleaned a stack of RK05 DECpacks, I want to keep them

Re: C standards and committees (was Re: strangest systems I've sent email from)

> On May 21, 2016, at 4:33 AM, Mouse wrote: > >>> Most executables are not performance-critical enough for >>> dynamic-linker overhead to matter. (For the few that are, or for >>> the few cases where lots are, yes, static linking can help.) >> I keep telling myself that whenever I launch Firefo

Re: strangest systems I've sent email from

> On May 21, 2016, at 7:34 PM, ben wrote: > > On 5/20/2016 2:58 > >> >> [4] Say, a C compiler an 8088. How big is a pointer? How big of an >> object can you point to? How much code is involved with "p++"? > > How come INTEL thought that 64 KB segments ample? I guess they only used >

Re: C standards and committees (was Re: strangest systems I've sent email from)

> On May 22, 2016, at 5:40 AM, Mouse wrote: > First off, the C standard mandates that the order of fields in a struct cannot be reordered, >>> Yes. (I think this is a Bad Thing, but I can see why they did it.) >> Given that C is a systems implementation language, how would you >> defi

Re: strangest systems I've sent email from

> On May 24, 2016, at 1:29 PM, Liam Proven wrote: > > On 22 May 2016 at 04:52, Guy Sotomayor Jr wrote: >> Because the 808x was a 16-bit processor with 1MB physical addressing. I >> would argue that for the time 808x was brilliant in that most other 16-bit >> m

Re: strangest systems I've sent email from

> On May 24, 2016, at 2:32 PM, Swift Griggs wrote: > > On Tue, 24 May 2016, Fred Cisin wrote: >> (OB_Picky: Due to the overlap of segment and offset, on machines that had 21 >> address bits, real mode actually had a maximum of 1114096 (10FFF0h) bytes, >> instead of 1048576 (10h). > > This

Re: strangest systems I've sent email from

> On May 24, 2016, at 3:10 PM, Swift Griggs wrote: > > On Tue, 24 May 2016, Guy Sotomayor Jr wrote: >> The initial implementation of the A20 gate was implemented by the >> keyboard controller(!) because it was discovered late in the PC AT >> development cycle and we

Re: Bringing a VAX 750 and Nova from Canada to US: What to expect?

My DS570 came from Canada. The biggest issue is to have a shipper that is well versed in dealing with international shipping and knows how to deal with customs. Be clear on the customs/shipping documents about the country of origin and the value. You will need a bill of lading. Be warned, decla

Re: Bringing a VAX 750 and Nova from Canada to US: What to expect?

n Thursday, May 26, 2016, Guy Sotomayor Jr wrote: > >> My DS570 came from Canada. The biggest issue is to have a shipper that is >> well versed in dealing with international shipping and knows how to deal >> with >> customs. Be clear on the customs/shipping documents ab

Re: vintage computers in active use

> On May 27, 2016, at 8:52 AM, Swift Griggs wrote: > > On Thu, 26 May 2016, Bryan C. Everly wrote: >> I did work in UNIX on a Series-1 in the telecom space. It probably >> still is in use. > > What kind of Unix did they run? There is almost no information on > Wikipedia or elsewhere. I'm ju

Re: vintage computers in active use

> On May 27, 2016, at 9:29 AM, Noel Chiappa wrote: > >> From: Guy Sotomayor Jr > >> There was a political fight within IBM and the Unix center of >> competency moved .. All of the Series/1 Unix materials were destroyed >> at that point > > I wonder i

Re: vintage computers in active use

> On May 27, 2016, at 9:46 AM, Swift Griggs wrote: > > On Fri, 27 May 2016, Guy Sotomayor Jr wrote: >> There was a political fight within IBM and the Unix center of competency >> moved from Boca Raton, FL to Austin, TX. All of the Series/1 Unix >> materials were

Re: vintage computers in active use

> On May 27, 2016, at 7:17 PM, Jon Elson wrote: > > > It hasn't > seen battle yet (and I hope it doesn't have to) but I'm a little worried > about the fact that it's beaten (badly) in simulations and exercises with > much older fighter aircraft with much more "primitive" tech, including

Re: IBM 3511

> On Jun 9, 2016, at 8:21 PM, Mark J. Blair wrote: > > >> On Jun 9, 2016, at 19:39, William Donzelli wrote: >> >> So today I picked up something I had never seen before - an IBM 3511. >> This is a large tower expansion chassis for the PS/2 line. It looks >> very straightforward - but can any

Re: How do they make Verilog code for unknown ICs?

What you can do (and I’ve seen it done) is define verilog modules that provide the functions of the IC and use that in their designs. I’ve seen at least two interesting classic computer recreations using this approach (re-implemenation of the CADR lisp machine in verilog and an IBM 360/30 in veril

Re: How do they make Verilog code for unknown ICs?

Most of the FPGA companies provide (free) tools that allow you to write in verilog/VHDL and then simulate and observe the outputs (you can even “drill down” and see internal signals as well. It’s fairly easy to write a little bit of code (there are lots of examples on the web) and try it out on t

Re: How do they make Verilog code for unknown ICs?

> On Jun 20, 2016, at 1:56 PM, Swift Griggs wrote: > > On Mon, 20 Jun 2016, Paul Koning wrote: >> used to how C or similar languages work. For example, in this C code: >> a = 1; >> b = a; >> a and b will both equal 1 at the end. But in the VHDL code: >> a <= 1; >> b <= a; >

Re: old friend is slimming down the warehouse

Is there any sort of list of what he has or are we just to send out our “wish list” and see if he has it? TTFN - Guy > On Jun 21, 2016, at 12:27 PM, Electronics Plus wrote: > > An old friend of mine in GA is slimming down his warehouse. I know a long > time ago people sent me some pics and lis

Re: old friend is slimming down the warehouse

send me description and pics so I can post here? > He does not have pricing in mind, so please be fair when you ask or offer. > > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Guy > Sotomayor Jr > Sent: Tuesday, June 21, 2016 2:35

Re: old friend is slimming down the warehouse

> On Jun 21, 2016, at 1:05 PM, William Donzelli wrote: > >> I have sent Todd his contact info. He is willing to let one person come in >> and take pics and post to the group. He does NOT want to move one or 2 items >> of the most value; he wants to move out pallets of stuff. He is not closing

Re: CDC 6600 emulation - was Re: How do they make Verilog code for unknown ICs?

> On Jun 21, 2016, at 11:07 PM, dwight wrote: > > Well Ben > > I'll tell you a secret. I work for one of those two companies. > > Processors are designed from such code, simulated and then > > synthesized to silicon gates. I don't think that is too much of a > > secret. > > How the architec

Re: Source for server lift/hoist?

I have a genie lift that I picked up used at a flea market. It’s been the best $350 I ever spent! ;-) Of course I picked mine up 10+ years ago so I expect that prices have gone up some. I personally think that your $200 price target is *way* too low. Mine is counter weighted so the unit itself

Re: "FIRST"??!? (Was: word processor history -- interesting article

In high school, I wrote a paper using punched cards and a simple Fortan program that I wrote on an IBM 1130 to format them and print it out on a 1403 printer (that was 1974). In college I used “Scribe” a markup language and formatter that ran on TOPS-10 that could send output to an XGP (Xerox Gra

Re: server maintenance

Thanks Jay. Hopefully this will avoid a long thread on why classiccmp is down and folks aren’t receiving messages. ;-) TTFN - Guy > On Jul 8, 2016, at 2:30 PM, Jay West wrote: > > The classiccmp VM will go down tonight around 10pm-ish CST. There is nothing > wrong with the VM, but the NAS it'

Re: IBM 360/30 in verilog

POP = Principles of Operations. It is the 360/370 *bible*. It describes (in detail) how the architecture works (including all instructions). It specifies what are “architectural” (ie can be counted on by all models) and what are “implementation” specific. Changes to the POP were *very* restri

Re: DOS code in CP/M? Revisited...

> On Jul 14, 2016, at 9:46 AM, Fred Cisin wrote: > > > When IBM decided to take over the personal computer market, they didn't do > their homework very well. > Intel convinced them to use the 8088, to have a gateway into 16 bit, instead > of building a true 8 bit machine. > One of the IBM peo

Re: DOS code in CP/M? Revisited...

> On Jul 15, 2016, at 10:39 AM, Swift Griggs wrote: > > On Fri, 15 Jul 2016, Liam Proven wrote: >> But in the now-gone PowerPC era, yes, Macs used a derivative of the IBM >> POWER RISC processor line. > > I always thought it was a shame that both IBM and Apple were so tight > around the puck

Re: DOS code in CP/M? Revisited...

> On Jul 15, 2016, at 11:30 AM, Chuck Guzis wrote: > > On 07/15/2016 11:10 AM, Liam Proven wrote: > >> We don't appreciate how much faster modern PCs are than the old >> ones, because modern PC OSes are so appallingly slow and bloated. > > Reminds me of a conversation that I had with Greg Mans

Re: Reproduction micros

> On Jul 21, 2016, at 6:53 PM, ben wrote: > > On 7/20/2016 10:42 AM, Pete Turnbull wrote: >> On 20/07/2016 16:44, Paul Koning wrote: >> >>> It is true that a few RISC architectures are not very scrutable. >>> Itanium is a notorious example, as are some VLIW machines. But many >>> RISC machines

Re: Reproduction micros

> On Jul 21, 2016, at 8:55 PM, ben wrote: > > On 7/21/2016 9:34 PM, Guy Sotomayor Jr wrote: >> >>> On Jul 21, 2016, at 6:53 PM, ben wrote: >>> >>> On 7/20/2016 10:42 AM, Pete Turnbull wrote: >>>> On 20/07/2016 16:44, Paul Koning wrote: &g

Re: Reproduction micros

> On Jul 25, 2016, at 1:34 PM, Sean Conner wrote: > > It was thus said that the Great Peter Corlett once stated: >> >> Unsurprisingly, the x86 ISA is brain-damaged here, in that some instructions >> (e.g. inc") only affect some bits in EFLAGS, which causes a partial register >> stall. The recom

Re: Are old SCSI tape drives not all created equal?

> On Aug 17, 2016, at 12:01 PM, Maciej W. Rozycki wrote: > > On Wed, 17 Aug 2016, Mouse wrote: > >> SCSI is more than just the physical interface. Traditional SCSI is a >> parallel interface, with a bunch of signals and grounds. But, layered >> atop the physical interface, there is also a com

Re: Are old SCSI tape drives not all created equal?

> On Aug 17, 2016, at 12:18 PM, Paul Koning wrote: > > >> On Aug 17, 2016, at 3:11 PM, Guy Sotomayor Jr wrote: >> >> ... >> If you *really* want to see how this was screwed up, take a look at >> Fibre Channel (which is basically SCSI over an optical Fi

Re: 50 yrs. of Star Trek!

> On Sep 9, 2016, at 1:23 PM, Doug Ingraham wrote: > > On Fri, Sep 9, 2016 at 12:39 PM, Peter Cetinski wrote: > >> >>> On Sep 9, 2016, at 10:55 AM, Doug Ingraham >> wrote: >>> >>> Transparent aluminum exists. It is called sapphire. Sapphire is the >>> crystalline form of aluminum oxide.

Re: 50 yrs. of Star Trek!

> On Sep 9, 2016, at 6:58 PM, Fred Cisin wrote: > > On Fri, 9 Sep 2016, Guy Sotomayor Jr wrote: >> Actually it actually *does* exist and is reasonable to manufacture. Here’s >> the >> article: >> http://www.nrl.navy.mil/media/news-releases/2015/transparent

Re: Meaning of "architecture width" - Re: 68K Macs with MacOS 7.5 still in production use...

> On Sep 16, 2016, at 4:41 PM, Chuck Guzis wrote: > > On 09/16/2016 03:20 PM, Jecel Assumpcao Jr. wrote: > >> Note that in the conclusion to this 1979 article, the Motorola >> engineers say "It is a 32-bit architecture that supports many data >> types and data addresses." > The important part

Re: Meaning of "architecture width" - Re: 68K Macs with MacOS 7.5 still in production use...

> On Sep 17, 2016, at 10:10 AM, Chuck Guzis wrote: > > On 09/17/2016 09:23 AM, Eric Smith wrote: > >> I don't know what the width of the TMS9900 ALU is, but I'm pretty >> sure it's not bit-serial, as an add instruction only takes 14 clock >> cycles, including four memory cycles. I'd be very sur

Re: Unibus controller for MFM disks

> On Oct 15, 2016, at 7:33 AM, Al Kossow wrote: > > > > I hope someone gets a Q/Unibus non-mscp small disk emulator PCB built > some day. I wonder if Guy has had any time to work on his. > No, I haven’t had any time to work on stuff. I still have the prototype MEM11A only half built. > >

Re: MFM floppy and HD emulator DREM

> On Oct 17, 2016, at 9:58 AM, j...@cimmeri.com wrote: > > > > On 10/17/2016 11:18 AM, Peter Cetinski wrote: >>> On Oct 17, 2016, at 11:58 AM, emanuel stiebler wrote: >>> >>> Hi all, >>> anybody has any experience with that: >>> >>> http://www.drem.info/ >>> >>> ? >> Yes, I'm currently in t

Re: MFM floppy and HD emulator DREM

> On Oct 17, 2016, at 10:23 AM, Josh Dersch wrote: > > On Mon, Oct 17, 2016 at 10:21 AM, Guy Sotomayor Jr > wrote: > >> >>> On Oct 17, 2016, at 9:58 AM, j...@cimmeri.com wrote: >>> >>> >>> >>> On 10/17/2016 11:18 AM,

Re: MFM floppy and HD emulator DREM

> On Oct 17, 2016, at 1:31 PM, Dave Wade wrote: > >>> >>> I’ll likely be getting at least 3 of them (1 for the IBM 3174 and 2 >>> for my Symbolics 3640 and possible another 2 for my other Symbolics 3640). >>> > > I gather that some one has the Dave Gershwin board working with a 3174. Was > t

Re: MFM floppy and HD emulator DREM

> On Oct 17, 2016, at 2:42 PM, Dave Wade wrote: > > > >> -Original Message- >> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Guy >> Sotomayor Jr >> Sent: 17 October 2016 21:38 >> To: General Discussion: On-Topic and Off-Topi

Re: IBM 4331 [Was: MFM floppy and HD emulator DREM]

> On Oct 17, 2016, at 3:08 PM, Jason Howe wrote: > > > > On Mon, 17 Oct 2016, Guy Sotomayor Jr wrote: >> >> Oh and did I mention that I?ve acquired (just need to move it) an IBM 4331 >> mainframe including *all* of the peripherals (3340 disk drives + lot

Re: MFM floppy and HD emulator DREM

> On Oct 18, 2016, at 5:27 PM, David Gesswein wrote: > > On Mon, Oct 17, 2016 at 01:38:19PM -0700, Guy Sotomayor Jr wrote: >> >> Yes, that?s me but I have had issues with the emulator starting up >> reliably so that the 3174 boots. >> > I haven't h

Re: Unibus disk controller with modern storage

> On Oct 21, 2016, at 11:41 AM, Paul Koning wrote: > > >> On Oct 20, 2016, at 6:05 PM, Noel Chiappa wrote: >> >>> From: David Bridgham >> >>> the right threshold voltage to meet the receiver spec >> >> The UNIBUS spec says the 4 crucial receiver parameters are input thresholds >> (high and

Re: DEC bus transceivers

> On Oct 24, 2016, at 1:30 PM, Paul Koning wrote: > > >> On Oct 24, 2016, at 3:55 PM, David Bridgham wrote: >> >> On 10/24/2016 12:01 PM, Paul Koning wrote: >> >>> I don't know about the receiver part, but I'd expect that the drivers could >>> very easily be done with a simple transistor ci

Re: DEC bus transceivers

> On Oct 24, 2016, at 1:41 PM, Paul Koning wrote: > > >> On Oct 24, 2016, at 4:35 PM, Guy Sotomayor Jr wrote: >>> ... >> >> OK, I guess my last email didn’t make it. It appears to me that the rise >> time is set at 25ns. >> >> Yo

Re: DEC bus transceivers

> On Oct 24, 2016, at 10:37 AM, allison wrote: > > On 10/23/16 2:59 PM, Al Kossow wrote: >> >> On 10/23/16 11:50 AM, shad wrote: >> >>> The problem is that there aren't open drain bus transceivers, but the >>> problem could be solved simply using input-only and output-only components, >>>

Re: DEC bus transceivers

> On Oct 24, 2016, at 11:35 PM, ben wrote: > > On 10/24/2016 2:18 PM, David Bridgham wrote: >> On 10/24/2016 01:37 PM, allison wrote: >> >>> The voltages are based on TTL levels. What are the unique voltages? >> >> The QBUS spec from the 1979 Bus Handbook (the Unibus levels are the same): >>

Re: DEC bus transceivers

> On Oct 25, 2016, at 8:38 AM, allison wrote: > > On 10/25/16 10:02 AM, Guy Sotomayor Jr wrote: >>> On Oct 24, 2016, at 11:35 PM, ben wrote: >>> >>> On 10/24/2016 2:18 PM, David Bridgham wrote: >>>> On 10/24/2016 01:37 PM, allison wrote: >>

Re: DEC bus transceivers

> On Oct 25, 2016, at 1:09 PM, Paul Koning wrote: > > >> On Oct 24, 2016, at 4:48 PM, Guy Sotomayor Jr wrote: >> >> >>> ... >>> Where do you see the 25 ns spec? I didn't see it (admittedly in a quick >>> scan). >> >>

Re: DEC bus transceivers

> On Oct 25, 2016, at 1:35 PM, ben wrote: > >> >> If you want to build boards that will work in a small subset of systems >> that’s >> find…but don’t advertise it as Unibus compatible. I test the boards I >> produce >> in all of my systems (11/20, 11/34, 11/40 and 11/70) and they all use DEC

Re: DEC bus transceivers

> On Oct 25, 2016, at 12:40 PM, allison wrote: >> >> Also, I think in a previous email you mentioned that the UNIBUS is 240ohm. >> It’s not. >> It’s 120ohm. > My book says no. Qbus is for sure 120. > Section 5.2.5 of the PDP-11 UNIBUS spec: A Unibus segment must always have a Unibus terminat

Re: DEC bus transceivers

> On Oct 25, 2016, at 12:40 PM, allison wrote: > >> >> Also, I think in a previous email you mentioned that the UNIBUS is 240ohm. >> It’s not. >> It’s 120ohm. > My book says no. Qbus is for sure 120. > OK, re-reading the first part of section 5.2.5, it’s pretty clear that the Unibus is 120-

Re: DEC bus transceivers

> On Oct 26, 2016, at 7:02 AM, Philipp Hachtmann wrote: > > Hi, > > On 10/25/2016 10:49 PM, Guy Sotomayor Jr wrote: >> Secondary chip marked (only reputable vendors). I currently have ~2500 8641 >> and several 100’s of the other variants. Assuming 100% good parts

Re: For sale 128K Core RAM Industrial PDP 11/40 Massbus System

> On Oct 30, 2016, at 3:09 PM, Mike Ross wrote: > > On Mon, Oct 31, 2016 at 10:09 AM, william degnan wrote: >> *For sale 128K Core RAM Industrial PDP 11/40 Massbus System* >> >> *Ebay:* 272432268291 >> >> http://www.ebay.com/itm/-/272432268291? >> >> $1. >> >> Bill > > Unix? Probably a com

Re: Supercomputers, fishing for information

> On Nov 8, 2016, at 8:47 AM, Jon Elson wrote: > > On 11/07/2016 10:31 PM, Jon Elson wrote: >> On 11/07/2016 07:59 PM, Mark Linimon wrote: >>> On Mon, Nov 07, 2016 at 11:23:58AM -0800, Chuck Guzis wrote: But if you're a suburban resident living on Mulberry Street, anything but single-p

Re: Supercomputers, fishing for information

> On Nov 8, 2016, at 9:22 AM, Paul Koning wrote: > > >> On Nov 8, 2016, at 12:08 PM, Guy Sotomayor Jr wrote: >> >> >>> On Nov 8, 2016, at 8:47 AM, Jon Elson wrote: >>> >>> On 11/07/2016 10:31 PM, Jon Elson wrote: >>>> On 1

Re: Supercomputers, fishing for information

c Posts >> >> Subject: Re: Supercomputers, fishing for information >> >> >>> On Nov 8, 2016, at 12:08 PM, Guy Sotomayor Jr >> wrote: >>> >>> >>>> On Nov 8, 2016, at 8:47 AM, Jon Elson wrote: >>>> >>>&g

Re: Free IBM system/1(?) in eastern US.

Yes, someone please rescue this. They’re nice minis. I would but I’m still in the process of getting a fully configured IBM 4331 (mainframe) moved here so I don’t have the time/space to deal with it at the moment. TTFN - Guy > On Nov 21, 2016, at 7:50 PM, Ian Finder wrote: > > Someone go res

Re: Free IBM system/1(?) in eastern US.

The IBM Series/1 was introduced in 1976 and withdrawn in 1988. There were originally 2 models and another 2 models were added later. I always knew them by their code names — different varieties of peaches…so named because they were developed by IBM’s GSD division which was headquartered in Atlant

Re: ISO: PDP-11/40 LTC and Stack Limit options

> On Nov 22, 2016, at 4:40 PM, Josh Dersch wrote: > > > So... maybe I just completely missed the memo on this, and maybe there's > still something wrong with my backplane... is it possible that slot 9 of the > 11/40's CPU backplane is wired *specifically* for an M7800? I guess I need > to s

Re: ISO: PDP-11/40 LTC and Stack Limit options

> On Nov 22, 2016, at 5:43 PM, william degnan wrote: > > On Tue, Nov 22, 2016 at 8:13 PM, Guy Sotomayor Jr wrote: > >> >>> On Nov 22, 2016, at 4:40 PM, Josh Dersch wrote: >>> >>> >>> So... maybe I just completely missed the memo on th

Re: ISO: PDP-11/40 LTC and Stack Limit options

> On Nov 23, 2016, at 7:11 AM, william degnan wrote: > > > 3) I would not mind getting something like Guy's UA11 to test with. Are > these available? > Yes, they are still available (along with KM11s) TTFN - Guy

Re: Found in data center

If no one else wants/claims this, I will as it looks like mainframe stuff. Will you box/ship? TTFN - Guy > On Dec 14, 2016, at 10:54 AM, Pete Lancashire wrote: > > An old cabinet that only IBM had the key, they came by took what they > wanted and left it full > > I only got a quick shot of wh

Re: Found in data center

nce I doubt anything is fragile. > > -pete > > On Thu, Dec 15, 2016 at 10:20 AM, Guy Sotomayor Jr > wrote: > >> If no one else wants/claims this, I will as it looks like mainframe stuff. >> >> Will you box/ship? >> >> TTFN - Guy >> >>>

Re: DEC banner panel

> On Dec 26, 2016, at 10:54 AM, Tony Duell wrote: > > I am starting to fill a spare H960 with my PDP8/e system. Starting as > in cleaning > up the rack, sorting out the power controller, etc > > This is a somewhat odd question for me as I don't normally care about > such things, > but I mig

Re: DEC banner panel

Yea, that is a weird set of colors. I’ll see if I can take a picture of mine today and figure out where to post it. TTFN - Guy > On Dec 26, 2016, at 12:34 PM, Al Kossow wrote: > > It exists > > http://www.computerhistory.org/collections/catalog/102666173 > > I don't know why that particular

Re: What's the rarest or most unusual computer-related item do you own?

Although not yet physically in my possession (I still have to “pick it up” for large values of “pick up”) my rarest/most unusual system is an IBM 4331 with all of it’s related peripherals. Specifically it includes: * IBM 4331 CPU with 1MB of RAM * 4 IBM 3340 drives (w 12 70MB winchester packs) *

Re: DEC LCG cable...BC10K?

> On Jan 12, 2017, at 12:13 AM, Pontus Pihlgren wrote: > > On Wed, Jan 11, 2017 at 09:35:46PM -0600, Paul Anderson wrote: >> I found what I remember to be a DEC10 memory cable . It looks like a BC10K >> in the 1980 cables handbook. It looks to be a 5 footer or so. >> >> Any interest? Please co

Re: ps2 memory - with weird square silver IBM Circuit packaged memory on the sti

At one time IBM was the largest manufacturer of memory and consumed *all* of it internally (e.g. for IBM products). At the time all of IBM’s ICs were in the “aluminum” cans unless they needed more exotic cooling. In the PS/2 days, we ended up using some IBM produced memory because we could get a

Re: RL02 version of UNIX6?

> On Feb 2, 2017, at 9:25 AM, Bill Gunshannon > wrote: > > From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Paul Koning > [paulkon...@comcast.net] > Sent: Thursday, February 2, 2017 9:34 AM > To: General Discussion: On-Topic and Off-Topic Posts > Cc: j...@mercury.lcs.mit.edu > Subject

Re: RL02 version of UNIX6?

> On Feb 2, 2017, at 11:38 AM, william degnan wrote: > >> >> >> On 2/2/17 11:32 AM, william degnan wrote: >>> All this talk about compatibility...was there ever UNIX made for the PDP >>> 11/40 and RL02, or was it only run on RK05? Wouldn't all of the C and >> wake >>> calls, etc issues have b

Re: PDP 11 Line Time Clock (LW11L) M787 and EIS board, (KE11E) M7238

If you have a M7856 which is a SLU and LTC on one board you don’t need an M787. I assume that they you have the EIS board installed, you have the 3 jumper cables between the EIS and the uCode board. KM11s will help in diagnosing these issues as it allows you to single step through the uCode. TTF

Re: New batch of pdp8 OMNIBUS to USB interface! Please Read and react!

> On Feb 17, 2017, at 9:16 AM, Holm Tiffe wrote: > > Philipp Hachtmann wrote: > > [..] >> >>> You might consider KiCAD as an alternative to Eagle. It works pretty >>> darned well. >> Why should I? If you look at the board's size you probably see that it >> cannot be made using the free versi

ISO IBM 3278 keyboards

Hi, I recently acquired a couple of IBM 3278 terminals (finally!). They are complete and working when shipped. I haven’t powered them up yet…I need to check them out but other than some slight screen burn they’re complete and very clean. However, they came with data entry keyboards. I’d re

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: > >>>

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

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