Re: Wang 2243 drive enclosure
On 2016-Nov-07, at 10:06 PM, Jason Howe wrote: > Are there any Wang people on this list? > > I came across a Wang 2243, which is an enclosure w/ 3 8-inch floppy drives in > it for $75 in the local surplus shop. > > Is there a demand for something like this whole or is the value in the drives? > > I've been wanting to mess around with some 8-inch drives, but it seems a > crime to break this unit apart. > > There's also a smaller Wang enclosure with dual 5-inch floppies in it, but I > wasn't able to get a model number off it. Also $75 > > There big to store, and cut into my retro computing budget a bit -- but I'm > tempted to grab them.. Is there any potential interest here in these units > before I go back for them? I'd be interested, if I had the Wang 2200 to go with it. A few years ago I figured a nice collection set / museum display would be an HP 9830, Wang 2200 and IBM 5100 - three 'personal computers' from the early/mid-70s that predate the 'personal computer era'. I have an HP 9830, but Wang 2200s seem to be rare and IBM 5100s are now in the multi-K$ range. Would be good if it found a home with someone who has a 2200.
Re: PDP 11/20 sold (ebay warning)
On 8 November 2016 at 01:42, Graham Toal wrote: > the old clothes makes it sound like a prop buyer for movies... on the other > hand they'd probably buy a dead one for less... > Maybe the buyer was taking this hobby to the next level: a vintage way of life?
Re: PDP 11/20 sold (ebay warning)
Depending on what the clothing was, maybe they just like the old stuff. I buy good condition vintage shirts because I don't like the quality or fit of the crap they make today. On 11/8/16 7:24 AM, Tom Moss wrote: > Maybe the buyer was taking this hobby to the next level: a vintage way of > life? >
Re: Altos system mislisted on Epay
On 10/17/2016 11:23 AM, Jay Jaeger wrote: > The back label says 8000-10A, which should indeed be a Z80 system with a > hard disk. I have an Altos 1004 disk for the thing (and experience with > its power supply ;) ), but when I bought mine, my seller (not the same > as this one) mis-listed the CPU unit as having the disk controller, > which was not actually present - he used a stock photo to sell multiple > units. (I did receive some compensation for that). The disk controller > on this unit looks to be correct. > > On 10/16/2016 5:16 PM, jim stephens wrote: >> >> 48 min to go at 315 PDT >> >> Bit thing not in listing is an SA-1004 disk. And I'm suspicious it is >> an 8086, but who knows. Certainly has many serials on the back. >> >> Moore-Business-Systems-Altos-ASC-8000-10A-Zilog-Z80-CP-M-Multi-user-Computer >> >> >> http://www.ebay.com/itm/311713600878 >> > As a follow up, I did end up purchasing the thing, in order to get the prerequisite Altos 8200 system board and hard disk controller to mate with my existing Altos disk. (My disk is the larger sized SA-4008, contrary to the 1004 I cited earlier). It is indeed a 8000-10 system, with a Z80 processor. It is an all-in one unit - the SA-1004 is on the right hand side of the case, under the system board, and the floppy on the left side. Thus quite heavy (shipping weight was apparently 72 lbs). I have not yet disassembled it to check to see if the scrape on the transformer requires further attention, to deal with the filter capacitors, remove the useless SA-1004, etc. So, if anyone needs SA-1004 electronics or other pieces/parts let me know. :) JRJ
Re: Supercomputers, fishing for information
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-phase is pretty much out of the question. Oh, you can get it -- but be prepared for a large hassle. A former neighbor had a 440V 3-phase Italian lathe in his backyard shop, among other toys. After he was laid off from his aerospace job doing machining it was how he made his living. He was a very handy person to know :-) mcl I have two 3-phase machines in my shop (Bridgeport mill and Sheldon lathe) and run them each off a properly-sized VFD. 2-phase in, 3-phase out, plus variable speed and dynamic braking. Jon And, of course, that is really SINGLE-PHASE power on 2 wires, just to save anybody the trouble of correcting my error. Jon
Re: Altos system mislisted on Epay
> > > > As a follow up, I did end up purchasing the thing, in order to get the > prerequisite Altos 8200 system board and hard disk controller to mate > with my existing Altos disk. (My disk is the larger sized SA-4008, > contrary to the 1004 I cited earlier). It is indeed a 8000-10 system, > with a Z80 processor. > > It is an all-in one unit - the SA-1004 is on the right hand side of the > case, under the system board, and the floppy on the left side. Thus > quite heavy (shipping weight was apparently 72 lbs). I have not yet > disassembled it to check to see if the scrape on the transformer > requires further attention, to deal with the filter capacitors, remove > the useless SA-1004, etc. > > So, if anyone needs SA-1004 electronics or other pieces/parts let me > know. :) > > JRJ > Did I send you this link? http://vintagecomputer.net/altos/8000/Altos-8000-pt2_8500_board.pdf I have the 8000 manual, someone had in the past ask me to scan this part of it. b
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-phase is pretty much out of the question. >>> Oh, you can get it -- but be prepared for a large hassle. >>> >>> A former neighbor had a 440V 3-phase Italian lathe in his backyard shop, >>> among other toys. After he was laid off from his aerospace job doing >>> machining it was how he made his living. He was a very handy person >>> to know :-) >>> >>> mcl >>> >> I have two 3-phase machines in my shop (Bridgeport mill and Sheldon lathe) >> and run them each off a properly-sized VFD. 2-phase in, 3-phase out, plus >> variable speed and dynamic braking. >> >> Jon >> > And, of course, that is really SINGLE-PHASE power on 2 wires, just to save > anybody the trouble of correcting my error. > I’m looking to have to do something to get 3-phase for the IBM 4331 gear. I haven’t quite added up the power requirements yet but I’m guessing its going to be in the 10-15kVA range. Since the power to all of the gear is really split between 3 loads (string of 4 3340 drives, 3803 control unit + 2 3420 tape drives and 2821 control uint + 1403 printer + 2540 card reader/punch) I need to figure out if it’s best to have one big converter or 3 smaller ones. It’s unlikely that I’d be running all of the peripherals at once. The 4331 itself runs off of single phase 220v. TTFN - Guy
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: >> >> 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-phase is pretty much out of the question. Oh, you can get it -- but be prepared for a large hassle. A former neighbor had a 440V 3-phase Italian lathe in his backyard shop, among other toys. After he was laid off from his aerospace job doing machining it was how he made his living. He was a very handy person to know :-) mcl >>> I have two 3-phase machines in my shop (Bridgeport mill and Sheldon lathe) >>> and run them each off a properly-sized VFD. 2-phase in, 3-phase out, plus >>> variable speed and dynamic braking. >>> >>> Jon >>> >> And, of course, that is really SINGLE-PHASE power on 2 wires, just to save >> anybody the trouble of correcting my error. >> > > I’m looking to have to do something to get 3-phase for the IBM 4331 gear. I > haven’t quite added up the power requirements yet but I’m guessing its going > to be in the 10-15kVA range. Since the power to all of the gear is really > split between 3 loads (string of 4 3340 drives, 3803 control unit + 2 3420 > tape drives and 2821 control uint + 1403 printer + 2540 card reader/punch) I > need to figure out if it’s best to have one big converter or 3 smaller ones. > It’s unlikely that I’d be running all of the peripherals at once. The 4331 > itself runs off of single phase 220v. A VFD is a good option and may be quite economical if you get one of the low cost simple ones. I have one (3 hp model for my lathe) that cost only a bit over $100, though the price has gone up since. (Westinghouse TECO brand.) VFDs specified for single phase input tend to stop around 3 hp, as far as I have seen. Rumor has it that higher power units will also work (possibly with some derating) even though they claim to be 3 phase input, when you feed them just one phase on 2 of the 3 wires. I haven't tried that (but it matches how my VFD is connected). The other option is a "rotary converter". Basically that's a 3 phase motor connected to one phase power (with a start and run capacitor); it generates the missing phase roughtly in dynamotor fashion. Those can be built (articles on the web) or bought from machinery supply companies such as Enco; they show models up to 20 hp, i.e., about 15 kW. When I was looking into converters, I found VFDs to be the less expensive option. The instant reverse and variable frequency features were also attractive for lathe use; for powering computers that would not apply. Well, not unless you need 400 Hz for your Cyber 6600 -- in which case you'd need to check the VFD will go that high, not all do. Given that you have a number of smaller devices and that not all might need to run, several smaller converters sounds like a good option, especially if that gets you into the "economy VFD" range. paul
Re: Wang 2243 drive enclosure
On Tue, 8 Nov 2016, Brent Hilpert wrote: On 2016-Nov-07, at 10:06 PM, Jason Howe wrote: Are there any Wang people on this list? I came across a Wang 2243, which is an enclosure w/ 3 8-inch floppy drives in it for $75 in the local surplus shop. Is there a demand for something like this whole or is the value in the drives? I've been wanting to mess around with some 8-inch drives, but it seems a crime to break this unit apart. There's also a smaller Wang enclosure with dual 5-inch floppies in it, but I wasn't able to get a model number off it. Also $75 There big to store, and cut into my retro computing budget a bit -- but I'm tempted to grab them.. Is there any potential interest here in these units before I go back for them? I'd be interested, if I had the Wang 2200 to go with it. Yeah that's kind of where I am -- there don't seem to be too many of them around. I'm trying to reach out to some Wang 2200 people I've found. A few years ago I figured a nice collection set / museum display would be an HP 9830, Wang 2200 and IBM 5100 - three 'personal computers' from the early/mid-70s that predate the 'personal computer era'. I have an HP 9830, but Wang 2200s seem to be rare and IBM 5100s are now in the multi-K$ range. Would be good if it found a home with someone who has a 2200. --Jason
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 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-phase is pretty much out of the question. > Oh, you can get it -- but be prepared for a large hassle. > > A former neighbor had a 440V 3-phase Italian lathe in his backyard shop, > among other toys. After he was laid off from his aerospace job doing > machining it was how he made his living. He was a very handy person > to know :-) > > mcl > I have two 3-phase machines in my shop (Bridgeport mill and Sheldon lathe) and run them each off a properly-sized VFD. 2-phase in, 3-phase out, plus variable speed and dynamic braking. Jon >>> And, of course, that is really SINGLE-PHASE power on 2 wires, just to save >>> anybody the trouble of correcting my error. >>> >> >> I’m looking to have to do something to get 3-phase for the IBM 4331 gear. I >> haven’t quite added up the power requirements yet but I’m guessing its going >> to be in the 10-15kVA range. Since the power to all of the gear is really >> split between 3 loads (string of 4 3340 drives, 3803 control unit + 2 3420 >> tape drives and 2821 control uint + 1403 printer + 2540 card reader/punch) I >> need to figure out if it’s best to have one big converter or 3 smaller ones. >> It’s unlikely that I’d be running all of the peripherals at once. The 4331 >> itself runs off of single phase 220v. > > A VFD is a good option and may be quite economical if you get one of the low > cost simple ones. I have one (3 hp model for my lathe) that cost only a bit > over $100, though the price has gone up since. (Westinghouse TECO brand.) > VFDs specified for single phase input tend to stop around 3 hp, as far as I > have seen. Rumor has it that higher power units will also work (possibly > with some derating) even though they claim to be 3 phase input, when you feed > them just one phase on 2 of the 3 wires. I haven't tried that (but it > matches how my VFD is connected). > > The other option is a "rotary converter". Basically that's a 3 phase motor > connected to one phase power (with a start and run capacitor); it generates > the missing phase roughtly in dynamotor fashion. Those can be built > (articles on the web) or bought from machinery supply companies such as Enco; > they show models up to 20 hp, i.e., about 15 kW. When I was looking into > converters, I found VFDs to be the less expensive option. The instant > reverse and variable frequency features were also attractive for lathe use; > for powering computers that would not apply. Well, not unless you need 400 > Hz for your Cyber 6600 -- in which case you'd need to check the VFD will go > that high, not all do. > > Given that you have a number of smaller devices and that not all might need > to run, several smaller converters sounds like a good option, especially if > that gets you into the "economy VFD" range. Yea, that’s what I’m struggling with. The issue is that the control units power the devices that are connected to them (from what I can tell), so I have to power the entire string as one unit. The same goes for the 3340’s - the entire string is powered as a unit. The string of 3340’s need ~5kVA (I don’t know how that translates to HP). I’m still trying to figure out the requirements for the other strings. TTFN - Guy
Re: Supercomputers, fishing for information
On Tue, 8 Nov 2016 09:33:37 -0800 Guy Sotomayor Jr wrote: > > 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 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-phase is pretty much out of the question. > > Oh, you can get it -- but be prepared for a large hassle. > > > > A former neighbor had a 440V 3-phase Italian lathe in his > > backyard shop, among other toys. After he was laid off from > > his aerospace job doing machining it was how he made his > > living. He was a very handy person to know :-) > > > > mcl > > > I have two 3-phase machines in my shop (Bridgeport mill and > Sheldon lathe) and run them each off a properly-sized VFD. > 2-phase in, 3-phase out, plus variable speed and dynamic braking. > > Jon > > >>> And, of course, that is really SINGLE-PHASE power on 2 wires, > >>> just to save anybody the trouble of correcting my error. > >> > >> I’m looking to have to do something to get 3-phase for the IBM > >> 4331 gear. I haven’t quite added up the power requirements yet > >> but I’m guessing its going to be in the 10-15kVA range. Since the > >> power to all of the gear is really split between 3 loads (string > >> of 4 3340 drives, 3803 control unit + 2 3420 tape drives and 2821 > >> control uint + 1403 printer + 2540 card reader/punch) I need to > >> figure out if it’s best to have one big converter or 3 smaller > >> ones. It’s unlikely that I’d be running all of the peripherals at > >> once. The 4331 itself runs off of single phase 220v. > > > > A VFD is a good option and may be quite economical if you get one > > of the low cost simple ones. I have one (3 hp model for my lathe) > > that cost only a bit over $100, though the price has gone up > > since. (Westinghouse TECO brand.) VFDs specified for single phase > > input tend to stop around 3 hp, as far as I have seen. Rumor has > > it that higher power units will also work (possibly with some > > derating) even though they claim to be 3 phase input, when you feed > > them just one phase on 2 of the 3 wires. I haven't tried that (but > > it matches how my VFD is connected). > > > > The other option is a "rotary converter". Basically that's a 3 > > phase motor connected to one phase power (with a start and run > > capacitor); it generates the missing phase roughtly in dynamotor > > fashion. Those can be built (articles on the web) or bought from > > machinery supply companies such as Enco; they show models up to 20 > > hp, i.e., about 15 kW. When I was looking into converters, I found > > VFDs to be the less expensive option. The instant reverse and > > variable frequency features were also attractive for lathe use; for > > powering computers that would not apply. Well, not unless you need > > 400 Hz for your Cyber 6600 -- in which case you'd need to check the > > VFD will go that high, not all do. > > > > Given that you have a number of smaller devices and that not all > > might need to run, several smaller converters sounds like a good > > option, especially if that gets you into the "economy VFD" range. > > Yea, that’s what I’m struggling with. The issue is that the control > units power the devices that are connected to them (from what I can > tell), so I have to power the entire string as one unit. The same > goes for the 3340’s - the entire string is powered as a unit. The > string of 3340’s need ~5kVA (I don’t know how that translates to > HP). I’m still trying to figure out the requirements for the other > strings. Here's a "conversion" website: http://ncalculators.com/electrical/kva-conversion.htm Cheers, Lyle -- 73 AF6WS Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"
RE: Wang 2243 drive enclosure
Jason Howe wrote: > Are there any Wang people on this list? >I came across a Wang 2243, which is an enclosure w/ 3 8-inch floppy drives in >it for $75 in the local surplus shop. Jim Battle might be interested: http://wang2200.org. He's got a keen interest in Wang Labs 2200 (among some other stuff from Wang Laboratories). Rick Bensene The Old Calculator Museum http://oldcalculatormuseum.com
Re: Supercomputers, fishing for information
> On Nov 8, 2016, at 12:33 PM, Guy Sotomayor Jr wrote: > > ... >> >> A VFD is a good option and may be quite economical if you get one of the low >> cost simple ones. I have one (3 hp model for my lathe) that cost only a bit >> over $100, though the price has gone up since. (Westinghouse TECO brand.) >> VFDs specified for single phase input tend to stop around 3 hp, as far as I >> have seen. Rumor has it that higher power units will also work (possibly >> with some derating) even though they claim to be 3 phase input, when you >> feed them just one phase on 2 of the 3 wires. I haven't tried that (but it >> matches how my VFD is connected). >> ... >> Given that you have a number of smaller devices and that not all might need >> to run, several smaller converters sounds like a good option, especially if >> that gets you into the "economy VFD" range. > > Yea, that’s what I’m struggling with. The issue is that the control units > power the devices that are connected to them (from what I can tell), so I > have to power the entire string as one unit. The same goes for the 3340’s - > the entire string is powered as a unit. The string of 3340’s need ~5kVA (I > don’t know how that translates to HP). I’m still trying to figure out the > requirements for the other strings. The classic formula is 1 hp = 750 W. But there's more to the picture. Motors draw a steady state current based on the power demanded from them, and the hp rating shows the max that they are designed for. But when starting they draw much more current. http://www.vfds.com/blog/vfd-buying-guide has a pile of good information, including more about the use of single phase input. It's clearly an accepted practice, and yes, there's derating involved. Given that your devices are partly motor loads, but certainly not entirely, the startup surge is likely to be modest by motor controller standards. So the key question would be the steady state current vs. what the controller is rated for. paul
ISO Telenex/Atlantic Research protocol analyzer tech manuals
another rathole :-( picked up some ST125 mfm drives and a multibus-ish floppy/mfm controller on ebay that came from a AR/Telenex 8600 Autoscope, which is a high-level protocol analyzer because it used an example of a hard disk controller chip I had never seen used before (Signetics 68454) http://www.ebay.com/itm/282236398895 found the manual for the 7000 series on line, and just bought a whole 8600 Turbo http://www.ebay.com/itm/331829268184 so now I'm looking for software and manuals for that. fortunately, it looks like the software is still on the hard disk in the one I bought.
RE: Wang 2243 drive enclosure
On Tue, 8 Nov 2016, Rick Bensene wrote: Jason Howe wrote: Are there any Wang people on this list? I came across a Wang 2243, which is an enclosure w/ 3 8-inch floppy drives in it for $75 in the local surplus shop. Jim Battle might be interested: http://wang2200.org. He's got a keen interest in Wang Labs 2200 (among some other stuff from Wang Laboratories). Rick Bensene The Old Calculator Museum http://oldcalculatormuseum.com I actually reached out to Jim this morning. Seems he's donated all his 2200 to a museum, but has put me in touch with someone else... We'll see. Kinda wish I had a snowballs chance in hell of finding a 2200 -- I'd just assume pick these up, but that's a lot of cubic footage for a someday project. --Jason
AS400 9406-170 available.
Weirdstuff Warehouse has recently acquired a clean AS400 9406-170. It was taken out of service where it was running. The lot includes manuals, terminals, printers, cables, etc. I took a bunch of pictures of the unit which are available via the link below: https://drive.google.com/drive/folders/0B7RetVDiFv-qS0FtVzdSNmZxV0k?usp=sharing If you are interested in acquiring the lot, contact "Jim" at Weirdstuff. DISCLAIMER: I am posting this as a client of Weirdstuff Warehouse and have no monetary interest in any transaction related to this unit. Cheers, Lyle -- 73 AF6WS Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"
Re: ISO Telenex/Atlantic Research protocol analyzer tech manuals
To hijack this thread... While sorting out some more stuff here I found an Atlantic Research protocol analyser. The front cover says it's a model 3600, but some of the PCBs say 4500 on them. Since from what little is on-line the 3600 could be upgraded to a 4500, I wonder if that is what happened to mine. Anyway, it needs a lot of work. It looks like it was dropped from a great height. The plastic case covers are cracked. The chassis is twisted. It will need a new CRT. The cartridge tape drive is in many pieces. But the PCBs all look intact and it seems like an interesting challenge to get t to run again. I don't suppose anyone has the manuals for it -tony
Re: ISO Telenex/Atlantic Research protocol analyzer tech manuals
On 11/8/16 11:21 AM, Tony Duell wrote: > I don't suppose anyone has the manuals for it > there are a couple of 4600 technical manuals listed on eBay they probably won't have schematics, though
Re: ISO Telenex/Atlantic Research protocol analyzer tech manuals
On Tue, Nov 8, 2016 at 7:31 PM, Al Kossow wrote: > > > On 11/8/16 11:21 AM, Tony Duell wrote: > >> I don't suppose anyone has the manuals for it >> > > there are a couple of 4600 technical manuals listed on eBay > they probably won't have schematics, though > > > I am pretty sure the 4600 is totally different (it's the 3600 and 4500 that I am looking for). It's probably going to be less hassle to trace the whole lot out. At least I recognise all the ICs apart from one (and that's on one of the boards labelled '4500' so I may not have to worry about it). A project for the distant future, I think... -tony
RE: Supercomputers, fishing for information
> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Paul > Koning > Sent: 08 November 2016 17:22 > To: General Discussion: On-Topic and Off-Topic 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: > >> > >> 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-phase is pretty much out of the question. > Oh, you can get it -- but be prepared for a large hassle. > > A former neighbor had a 440V 3-phase Italian lathe in his backyard > shop, among other toys. After he was laid off from his aerospace > job doing machining it was how he made his living. He was a very > handy person to know :-) > > mcl > > >>> I have two 3-phase machines in my shop (Bridgeport mill and Sheldon > lathe) and run them each off a properly-sized VFD. 2-phase in, 3-phase out, > plus variable speed and dynamic braking. > >>> > >>> Jon > >>> > >> And, of course, that is really SINGLE-PHASE power on 2 wires, just to save > anybody the trouble of correcting my error. > >> > > > > I’m looking to have to do something to get 3-phase for the IBM 4331 gear. I > haven’t quite added up the power requirements yet but I’m guessing its > going to be in the 10-15kVA range. Since the power to all of the gear is > really > split between 3 loads (string of 4 3340 drives, 3803 control unit + 2 3420 > tape > drives and 2821 control uint + 1403 printer + 2540 card reader/punch) I need > to figure out if it’s best to have one big converter or 3 smaller ones. It’s > unlikely that I’d be running all of the peripherals at once. The 4331 itself > runs > off of single phase 220v. > Not sure how familiar with the 4331 you are, but from what I remember, the microcode checks devices at poweron and may get itself in a tizz If peripherals are not powered on... Dave > A VFD is a good option and may be quite economical if you get one of the low > cost simple ones. I have one (3 hp model for my lathe) that cost only a bit > over $100, though the price has gone up since. (Westinghouse TECO brand.) > VFDs specified for single phase input tend to stop around 3 hp, as far as I > have seen. Rumor has it that higher power units will also work (possibly with > some derating) even though they claim to be 3 phase input, when you feed > them just one phase on 2 of the 3 wires. I haven't tried that (but it matches > how my VFD is connected). > > The other option is a "rotary converter". Basically that's a 3 phase motor > connected to one phase power (with a start and run capacitor); it generates > the missing phase roughtly in dynamotor fashion. Those can be built (articles > on the web) or bought from machinery supply companies such as Enco; they > show models up to 20 hp, i.e., about 15 kW. When I was looking into > converters, I found VFDs to be the less expensive option. The instant > reverse and variable frequency features were also attractive for lathe use; > for powering computers that would not apply. Well, not unless you need 400 > Hz for your Cyber 6600 -- in which case you'd need to check the VFD will go > that high, not all do. > > Given that you have a number of smaller devices and that not all might need > to run, several smaller converters sounds like a good option, especially if > that > gets you into the "economy VFD" range. > > paul >
Re: Supercomputers, fishing for information
> On Nov 8, 2016, at 11:51 AM, Dave Wade wrote: > > > >> -Original Message- >> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Paul >> Koning >> Sent: 08 November 2016 17:22 >> To: General Discussion: On-Topic and Off-Topic 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: 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-phase is pretty much out of the question. >> Oh, you can get it -- but be prepared for a large hassle. >> >> A former neighbor had a 440V 3-phase Italian lathe in his backyard >> shop, among other toys. After he was laid off from his aerospace >> job doing machining it was how he made his living. He was a very >> handy person to know :-) >> >> mcl >> > I have two 3-phase machines in my shop (Bridgeport mill and Sheldon >> lathe) and run them each off a properly-sized VFD. 2-phase in, 3-phase out, >> plus variable speed and dynamic braking. > > Jon > And, of course, that is really SINGLE-PHASE power on 2 wires, just to save >> anybody the trouble of correcting my error. >>> >>> I’m looking to have to do something to get 3-phase for the IBM 4331 gear. I >> haven’t quite added up the power requirements yet but I’m guessing its >> going to be in the 10-15kVA range. Since the power to all of the gear is >> really >> split between 3 loads (string of 4 3340 drives, 3803 control unit + 2 3420 >> tape >> drives and 2821 control uint + 1403 printer + 2540 card reader/punch) I need >> to figure out if it’s best to have one big converter or 3 smaller ones. It’s >> unlikely that I’d be running all of the peripherals at once. The 4331 >> itself runs >> off of single phase 220v. >> > > > Not sure how familiar with the 4331 you are, but from what I remember, the > microcode checks devices at poweron and may get itself in a tizz > If peripherals are not powered on… > I’ll cross that bridge when I get to it. ;-) With the exception of the 3340’s (which are directly attached to the 4331), I’m wondering how the microcode would know since the other peripherals are connected through control units which are on the bus-and-tag bus. I would expect that an OS that was gen’d for all of the peripherals might get weird (or not) if it didn’t find the peripherals but I’ll happily deal with that when I get that far. I still have to physically get the system here. I poked around it this past weekend (where is currently stored). I did get all of the docs, tapes, 3340 packs, etc and that filled up my (large) pickup truck…it was a lot of stuff. TTFN - Guy
General TC11 DECtape diagnostic/formatter questions
Hi all -- I'm working on getting a TC11 + TU56 running at the LCM+L. We plan to use it as a tool for various archival and restoration efforts. After restoring the power supplies, I have it lashed up to a PDP-11/44 -- I know this is anachronistic, but it's been a workhorse machine with ethernet and SCSI, which makes it very flexible. So far, so good. I have RT-11 running and it can read and write tapes, although the left TU56 transport seems to be a bit marginal. I am running into a couple of issues, and I'm curious if anyone else out there has experience here and might be able to shed some light before I spend a lot of time on it: 1) In bringing the TC11 up, I've been attempting to run the TC11 diagnostics, with mixed success. ZTCB runs, but reports an error with the ENDZ status bit not being set properly. So far as I can tell, ENDZ *is* being set on normal operations, but I haven't exhaustively debugged the controller yet. The other four diagnostics (ZTCA, ZTCC, ZTCD, and ZTCE) do nothing when run -- nothing is printed and there is no response. If I run them on SIMH configured as an 11/44, I see the same behavior. If I run them on SIMH configured as an 11/20, then I get the printout described in the documentation and listings. (See bitsavers -- http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp11/xxdp/diag_listings/TC11/). I haven't yet dug in to see what accounts for the difference -- any ideas? 2) I'm looking for means to format DECtapes on the TC11. I have a few marginal tapes and I'd like to see if reformatting them brings them back to life. The maintenance manual only indicates "a special program supplied with the TC11 system," and I haven't managed to find it. I *have* found this: http://mirrors.pdp-11.ru/inf.informatik.uni-stuttgart.de/pdp11/dtf.mac which I've assembled and run on RT-11 and it goes through the motions of writing out the timing and mark tracks, but when it goes through the second pass to write out the block numbers it fails immediately, with either status 001207 (indicating a "Data Missed" error) or 020033 (Mark Track Error). I haven't yet hooked up a scope to see if the T&M tracks are *actually* being written, but given my experience with the diagnostics in (1) above, I'm not averse to thinking there may be more than meets the eye with this issue. So in a nutshell: Anyone used a TC11 on a later PDP-11 (like the 11/44)? Anyone have any thoughts on the diagnostics and formatter issues? Thanks as always, Josh
Re: General TC11 DECtape diagnostic/formatter questions
On 11/8/16 12:37 PM, Josh Dersch wrote: > I've assembled and run on RT-11 and it goes through the motions of > writing out the timing and mark tracks, but when it goes through the second > pass to write out the block numbers it fails immediately Did you set the switch on the controller front panel to enable the clock track writing?
Re: Supercomputers, fishing for information
I’m looking to have to do something to get 3-phase for the IBM 4331 gear. I haven’t quite added up the power requirements yet but I’m guessing its going to be in the 10-15kVA range. Since the power to all of the gear is really split between 3 loads (string of 4 3340 drives, 3803 control unit + 2 3420 tape drives and 2821 control uint + 1403 printer + 2540 card reader/punch) I need to figure out if it’s best to have one big converter or 3 smaller ones. It’s unlikely that I’d be running all of the peripherals at once. The 4331 itself runs off of single phase 220v. I keep thinking about moving my J90 series box from Norfolk storage up to Northern Virginia -- I've been tempted to ping some of the lower tier data centers to see if they have space that can't be filled due to changes in technology. Maybe I could beg to get a low rent on some space to store the system and have the three 220v connections to fire it up once in a while and try to get the OS installed again. I have no idea if it could happen. The facility I work in probably wouldn't do it but it's a bit more modern. Some of the older ones can't use all of the space because the density of hardware climbed so much that there isn't enough power/cooling to match. -- Ethan O'Toole
RE: Supercomputers, fishing for information
> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Guy > Sotomayor Jr > Sent: 08 November 2016 20:10 > To: General Discussion: On-Topic and Off-Topic Posts > > Subject: Re: Supercomputers, fishing for information > > > > On Nov 8, 2016, at 11:51 AM, Dave Wade > wrote: > > > > > > > >> -Original Message- > >> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Paul > >> Koning > >> Sent: 08 November 2016 17:22 > >> To: General Discussion: On-Topic and Off-Topic 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: > > 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-phase is pretty much out of the question. > >> Oh, you can get it -- but be prepared for a large hassle. > >> > >> A former neighbor had a 440V 3-phase Italian lathe in his > >> backyard shop, among other toys. After he was laid off from his > >> aerospace job doing machining it was how he made his living. He > >> was a very handy person to know :-) > >> > >> mcl > >> > > I have two 3-phase machines in my shop (Bridgeport mill and > > Sheldon > >> lathe) and run them each off a properly-sized VFD. 2-phase in, > >> 3-phase out, plus variable speed and dynamic braking. > > > > Jon > > > And, of course, that is really SINGLE-PHASE power on 2 wires, just > to save > >> anybody the trouble of correcting my error. > > >>> > >>> I’m looking to have to do something to get 3-phase for the IBM 4331 > >>> gear. I > >> haven’t quite added up the power requirements yet but I’m guessing > >> its going to be in the 10-15kVA range. Since the power to all of the > >> gear is really split between 3 loads (string of 4 3340 drives, 3803 > >> control unit + 2 3420 tape drives and 2821 control uint + 1403 > >> printer + 2540 card reader/punch) I need to figure out if it’s best > >> to have one big converter or 3 smaller ones. It’s unlikely that I’d > >> be running all of the peripherals at once. The 4331 itself runs off of > >> single > phase 220v. > >> > > > > > > Not sure how familiar with the 4331 you are, but from what I remember, > > the microcode checks devices at poweron and may get itself in a tizz > > If peripherals are not powered on… > > > I’ll cross that bridge when I get to it. ;-) With the exception of the > 3340’s > (which are directly attached to the 4331), I’m wondering how the microcode > would know since the other peripherals are connected through control units > which are on the bus-and-tag bus. I would expect that an OS that was gen’d > for all of the peripherals might get weird (or not) if it didn’t find the > peripherals but I’ll happily deal with that when I get that far. Having checked out the operators guide here:- http://chiclassiccomp.org/docs/content/computing/IBM/Mainframe/Hardware/System/GA33-1525-1_4331ProcessorOperatingProceduresProblemDeterminationGuide.pdf it looks like the 4331 does not have a full IO config, but later models like the 4381 have a definition of all the attached devices in the microcode so they can check everything is working before you IPL the machine. The physical planning manual for 43xx machines is in the above folder so you can check the power needs of each device.. > > I still have to physically get the system here. I poked around it this past > weekend (where is currently stored). I did get all of the docs, tapes, 3340 > packs, etc and that filled up my (large) pickup truck…it was a lot of stuff. Take care with the Microcode disks. The CPU and many controllers > > TTFN - Guy
Re: General TC11 DECtape diagnostic/formatter questions
> On Nov 8, 2016, at 3:37 PM, Josh Dersch wrote: > > Hi all -- > > ... > 2) I'm looking for means to format DECtapes on the TC11. I have a few > marginal tapes and I'd like to see if reformatting them brings them back to > life. The maintenance manual only indicates "a special program supplied > with the TC11 system," and I haven't managed to find it. I *have* found > this: > http://mirrors.pdp-11.ru/inf.informatik.uni-stuttgart.de/pdp11/dtf.mac > which I've assembled and run on RT-11 and it goes through the motions of > writing out the timing and mark tracks, but when it goes through the second > pass to write out the block numbers it fails immediately, with either > status 001207 (indicating a "Data Missed" error) or 020033 (Mark Track > Error). I haven't yet hooked up a scope to see if the T&M tracks are > *actually* being written, but given my experience with the diagnostics in > (1) above, I'm not averse to thinking there may be more than meets the eye > with this issue. > > So in a nutshell: Anyone used a TC11 on a later PDP-11 (like the 11/44)? > Anyone have any thoughts on the diagnostics and formatter issues? In college I used them on 11/20 and 11/45 processors with no troubles. And I think at DEC we had them on an 11/70. In any case, there's no reason to expect trouble based on the CPU type. The standard DEC supplied formatting program was originally supplied as a paper tape diagnostic. Way back in 1974 I rewrote it slightly so it would do the whole job in one pass, without asking you to reset switches, and it would also write proper empty directories (DOS style). But the standard program should work fine, and the one you mentioned appears similar. It's sufficient to have both the WRTM and WALL enable switches set for the whole operation. The official approach is to set WRTM (only) during the first pass, WALL (only) during the second, and no switches after that. But having unnecessary switches set to enable is harmless. If you had a switch set wrong you'd get an invalid operation error. You're seeing some different code, which suggests either the mark or timing tracks weren't written properly, or that there's some issue with the read circuitry. Yes, I would say it's time to hook up the scope and start tracing some signals. If you have a tape believed to be good that you're willing to erase, you might try reformatting that one. That would help rule out issues caused by bad media. While it is very rare for DECtape media to fail to the point that formatting doesn't work, it *is* possible. paul
Re: General TC11 DECtape diagnostic/formatter questions
On Tue, Nov 8, 2016 at 12:54 PM, Paul Koning wrote: > > > On Nov 8, 2016, at 3:37 PM, Josh Dersch wrote: > > > > Hi all -- > > > > ... > > 2) I'm looking for means to format DECtapes on the TC11. I have a few > > marginal tapes and I'd like to see if reformatting them brings them back > to > > life. The maintenance manual only indicates "a special program supplied > > with the TC11 system," and I haven't managed to find it. I *have* found > > this: > > http://mirrors.pdp-11.ru/inf.informatik.uni-stuttgart.de/pdp11/dtf.mac > > which I've assembled and run on RT-11 and it goes through the motions of > > writing out the timing and mark tracks, but when it goes through the > second > > pass to write out the block numbers it fails immediately, with either > > status 001207 (indicating a "Data Missed" error) or 020033 (Mark Track > > Error). I haven't yet hooked up a scope to see if the T&M tracks are > > *actually* being written, but given my experience with the diagnostics in > > (1) above, I'm not averse to thinking there may be more than meets the > eye > > with this issue. > > > > So in a nutshell: Anyone used a TC11 on a later PDP-11 (like the 11/44)? > > Anyone have any thoughts on the diagnostics and formatter issues? > > In college I used them on 11/20 and 11/45 processors with no troubles. > And I think at DEC we had them on an 11/70. In any case, there's no reason > to expect trouble based on the CPU type. > Beyond the XXDP diags not running properly ;). Some further experimentation reveals that if I set the system memory to 64KW or less, the ZTCA, etc. diagnostics run as expected. Forcing the XXDP disk to boot the SM (vs. the XM) monitor makes things work even on a machine with > 64KW. So that looks to be solved, fingers crossed. > > The standard DEC supplied formatting program was originally supplied as a > paper tape diagnostic. Way back in 1974 I rewrote it slightly so it would > do the whole job in one pass, without asking you to reset switches, and it > would also write proper empty directories (DOS style). But the standard > program should work fine, and the one you mentioned appears similar. > > It's sufficient to have both the WRTM and WALL enable switches set for the > whole operation. The official approach is to set WRTM (only) during the > first pass, WALL (only) during the second, and no switches after that. But > having unnecessary switches set to enable is harmless. > Good to know, thanks! > > If you had a switch set wrong you'd get an invalid operation error. > You're seeing some different code, which suggests either the mark or timing > tracks weren't written properly, or that there's some issue with the read > circuitry. Yes, I would say it's time to hook up the scope and start > tracing some signals. > Yep. Hopefully with the newfound ability to run the real diagnostics, this will be a bit easier. I'm guessing the read circuits are OK (since I am able to use pre-formatted tapes without issue). > > If you have a tape believed to be good that you're willing to erase, you > might try reformatting that one. That would help rule out issues caused by > bad media. While it is very rare for DECtape media to fail to the point > that formatting doesn't work, it *is* possible. > The tape I'm trying to format had a handful of bad blocks, none near either end of the tape (where the error in formatting occurs). So I think the media can be eliminated from the set of possible problems here. Thanks again, Josh > > paul > > >
Re: General TC11 DECtape diagnostic/formatter questions
> From: Josh Dersch > If I run them on SIMH configured as an 11/44, I see the same behavior. > If I run them on SIMH configured as an 11/20, then I get the printout > described in the documentation and listings. ... I haven't yet dug in > to see what accounts for the difference -- any ideas? The fact that the simulator produces identical results to the real hardware would argue that it's not a bug in that particular hardware. So it must be some real difference between the two. There are subtle differences between the 11/20, and other 11's - e.g. on the /20 SWAB does't clear the V bit - maybe it's one of them? It might be worth trying setting the CPU type to other values, and see if it works on any other machine type. > 2) I'm looking for means to format DECtapes on the TC11. ... The > maintenance manual only indicates "a special program supplied with the > TC11 system," and I haven't managed to find it. The UNIX V6 distro includes a standalone program, tcf.s, to format DECtapes. I don't know if you have a running V6 system (real or emulated) to assemble it one; if you want me to assemble it and provide it as binary (in a variety of formats, e.g. .LDA format), let me know. Noel
Re: MACRO11
Toby Thain wrote: > On 2016-11-07 8:34 AM, Holm Tiffe wrote: > > Jörg Hoppe wrote: > > > >> Hi, > >> > >> my version of the MACRO11 cross-assembler for PDP-11 is now on > >> https://github.com/j-hoppe/MACRO11 . > >> > >> Among others it fixes the "JMP Rn is illegal" error on "jmp (rx)" opcode. > >> > >> Also I added the option "listhex" to produce a binary listing in hex > >> notation instead of octal. > >> I found this really necessary when analyzing test programs with a modern > >> logic analyzer. > >> > >> Joerg > > > > Thanks. > > > > Could you possible change all the occurences of stricmp() wich is a > > mikeysoft-only thing, to the more standard strcasecmp()? > > You could do a pull request on github, or if you don't have time, I could. > > --Toby > Yes, please do it. Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Straße 42, 09600 Oberschöna, USt-Id: DE253710583 i...@tsht.de Fax +49 3731 74200 Tel +49 3731 74222 Mobil: 0172 8790 741
Re: ISO Telenex/Atlantic Research protocol analyzer tech manuals
On 08/11/16 19:35, Tony Duell wrote: I am pretty sure the 4600 is totally different (it's the 3600 and 4500 that I am looking for). It's probably going to be less hassle to trace the whole lot out. At least I recognise all the ICs apart from one (and that's on one of the boards labelled '4500' so I may not have to worry about it). A project for the distant future, I think... I have manuals for the ARC Interview 7000 and the Interview 8000, but I suspect that they are sufficiently different as to be of no use to you. I do think they are scanned though, so if you think they might be useful, please shout. Antonio -- Antonio Carlini arcarl...@iee.org
Re: ISO Telenex/Atlantic Research protocol analyzer tech manuals
On 11/8/16 3:46 PM, Antonio Carlini wrote: > > I have manuals for the ARC Interview 7000 and the Interview 8000, but I > suspect that they are sufficiently different > as to be of no use to you. I do think they are scanned though, so if you > think they might be useful, please shout. > It would be nice to add them to the archive.
Re: Supercomputers, fishing for information
On 11/08/2016 11:08 AM, Guy Sotomayor Jr wrote: I’m looking to have to do something to get 3-phase for the IBM 4331 gear. I haven’t quite added up the power requirements yet but I’m guessing its going to be in the 10-15kVA range. Since the power to all of the gear is really split between 3 loads (string of 4 3340 drives, 3803 control unit + 2 3420 tape drives and 2821 control uint + 1403 printer + 2540 card reader/punch) I need to figure out if it’s best to have one big converter or 3 smaller ones. It’s unlikely that I’d be running all of the peripherals at once. The 4331 itself runs off of single phase 220v. TTFN - Guy This is tricky stuff. Motor VFDs produce 400 V square waves of varying duty cycle, so unless you built a very good filter, you couldn't feed that to a a lot of these devices. Possibly you could rewire all that stuff to run the electronics off single-phase power, and use VFDs for the 3-phase motors. I know the tape drive vacuum blowers and 1403 printer had 3-phase motors in them. Likely the 3340's do, too. I'm guessing some of those control units may have run off single-phase, with the supplies balanced across different phases. That was fairly common for stuff that didn't draw massive amounts of power. Sounds like QUITE a project! Jon
Re: Supercomputers, fishing for information
On 11/08/2016 11:33 AM, Guy Sotomayor Jr wrote: Yea, that’s what I’m struggling with. The issue is that the control units power the devices that are connected to them (from what I can tell), so I have to power the entire string as one unit. The same goes for the 3340’s - the entire string is powered as a unit. The string of 3340’s need ~5kVA (I don’t know how that translates to HP). I’m still trying to figure out the requirements for the other strings. TTFN - Guy Just a warning, you MUST NOT power electronics from a VFD! (In theory, you can do it with a VERY effective filter, but I've never heard of anybody having success with it.) They produce high frequency square waves at 400 V, and will do great damage to electronic loads. They work great for motors, although the HF square waves can cause noise issues in sensitive electronics like tape and disk drives. Jon
Re: Supercomputers, fishing for information
On 11/08/2016 11:55 AM, Paul Koning wrote: The classic formula is 1 hp = 750 W. But there's more to the picture. Motors draw a steady state current based on the power demanded from them, and the hp rating shows the max that they are designed for. But when starting they draw much more current. Well, actually, motors draw a fairly constant current, and the phase angle between current and the applied voltage changes with load. At idle, a motor draws almost pure lagging current (phase almost 90 degrees lagging the voltage) and at full load the current is nearly in phase with the voltage. So, the POWER draw changes with load, but the line current changes much less! Jon
A Multibus board just sold for over $2000
well, not just ANY Multibus board http://www.ebay.com/itm/262697366358
Re: Epson MX-80 Technical Manual?
Just wanted to say thanks for doing this scan (and of course all the other great work you do), Al, the quality was fantastic. For anyone else that didn't notice this (or forgot to check back), it's at: http://bitsavers.informatik.uni-stuttgart.de/pdf/epson/printer/P8001A_MX-80_Technical_Manual.pdf And it's much more readable (especially the diagrams). Scott. On 06/11/2016, at 1:59 AM, Al Kossow wrote: > A scan I did this morning will be up on bitsavers by 13:00 PDT > > On 11/5/16 9:36 AM, Dave Wade wrote: >> They said they were working on it.. >> >>> -Original Message- >>> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Keven >>> Miller >>> Sent: 05 November 2016 13:04 >>> To: General Discussion: On-Topic and Off-Topic Posts >>> >>> Subject: Re: Epson MX-80 Technical Manual? >>> >>> I tried this link this morning (from Utah US) and got the manual. >>> So the link must have gotten fixed. >>> >>> I've placed here just in case: >>> >>> http://www.3kranger.com/download/epson_-_mx- >>> 80_dot_matrix_printer_-_technical_manual.pdf >>> >>> Keven Miller >>> >>> >>> - Original Message - >>> From: "Scott Kevill" >>> To: "General Discussion: On-Topic and Off-Topic Posts" >>> >>> Sent: Sat 05 Nov 2016 01:24 AM >>> Subject: Re: Epson MX-80 Technical Manual? >>> >>> >>> >>> On 05/11/2016, at 4:29 AM, Eric Smith wrote: >>> Does anyone have a scan of the MX-80 Dot Matrix Printer Technical >>> Manual? It's apparently intended to be available here: http://www.computinghistory.org.uk/det/39747/Epson-MX-80-Dot- >>> Matrix-Printer-Technical-Manual/ but I was unable to actually download it.
Re: General TC11 DECtape diagnostic/formatter questions
On 11/8/16 1:43 PM, Noel Chiappa wrote: > From: Josh Dersch > If I run them on SIMH configured as an 11/44, I see the same behavior. > If I run them on SIMH configured as an 11/20, then I get the printout > described in the documentation and listings. ... I haven't yet dug in > to see what accounts for the difference -- any ideas? The fact that the simulator produces identical results to the real hardware would argue that it's not a bug in that particular hardware. So it must be some real difference between the two. There are subtle differences between the 11/20, and other 11's - e.g. on the /20 SWAB does't clear the V bit - maybe it's one of them? It might be worth trying setting the CPU type to other values, and see if it works on any other machine type. Turns out it's the XXDP XM monitor causing the issues (I would wager that it sets up the MMU in such a way that older diagnostics don't deal well). If I run it under the SM Monitor it works. Whew :). > 2) I'm looking for means to format DECtapes on the TC11. ... The > maintenance manual only indicates "a special program supplied with the > TC11 system," and I haven't managed to find it. The UNIX V6 distro includes a standalone program, tcf.s, to format DECtapes. I don't know if you have a running V6 system (real or emulated) to assemble it one; if you want me to assemble it and provide it as binary (in a variety of formats, e.g. .LDA format), let me know. I could probably get a V6 distribution running if I need to, but if you have the means to do so easily, that would be handy so I can at least have another tool to try out. Something that XXDP can load would be useful. Thanks, Josh Noel
Re: A Multibus board just sold for over $2000
For a 432 board, I'm not all that surprised. It only needs the 43203 board to be a system. Eric S. would have loved to get that board. I suspect 432 stuff is even rarer than Intel bouble memory. Dwight From: cctalk on behalf of Al Kossow Sent: Tuesday, November 8, 2016 6:44:18 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: A Multibus board just sold for over $2000 well, not just ANY Multibus board http://www.ebay.com/itm/262697366358
Re: A Multibus board just sold for over $2000
A processor that Intel would love to forget... On Tue, Nov 8, 2016 at 6:44 PM, Al Kossow wrote: > well, not just ANY Multibus board > > http://www.ebay.com/itm/262697366358 > >
