- test-drb@ccmp.vtda.org - classiccmp.org

by dkelvey＠hotmail.com

I've been making a debugging ROM board to test out the various parts of the KIM-1. It is based on taking over the KIM at reset and running test. So far I've got two test working. One is a basic, is it running test that just blinks a light on the debug board. The next is a test of the first 1K of RAM. A little tricky to do without RAM. I expect to write some more for the RRIOT ics. If anyone has interest, they can follow me on the Vintage Computer Forum or contact me here. The board has 3 ttl ICs, a 2764/27128 EPROM, a couple LEDs and a dip switch. Also a few pullup resistors and capacitors. Dwight

9 years, 7 months

7
13
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NCD19 / Xncd19

by seefriek＠gmail.com

From: Rico Pajarola <rp at servium.ch> > Does no one have NCDWare 3.2.1 or earlier? Nostalgia...I really liked the NCD 19 I used many moons ago. Reasonably snappy at the time, nice mono screen, quiet. Funny enough I recently resurrected an NCD Explora 701 (much later MIPS-based xterminal). It's wildly faster than the 19 (with 10/100 enet instead of just 10), but it's interesting to see how far modern X implementation has diverged from NCDs time: 8-bit pseudo-color is a showstopper for a lot of things, various desktops (Gnome, KDE, etc.) break in strange ways if they run at all, lot's of contemporary code has issues on 64-bit systems (like my old xview/olvwm code). TWM still works fine, as does the butt-ugly built in NCD Motif-ish window manager. Haven't had much time to work on it, but I'd like to get something like i3 running. I bet Mouse can add more color commentary. Reminds me...need to see if I can still get the Mouse terminal emulator to run. Probably also need to get an SCO ODT or SVR4 VM running for that old school feel. I know I've got at least one 3.x release, but not sure which one or what's in it. FWIW, I've also got some 4.x, a 5.0.x and 5.1.x; running 5.1.140 on the 700. I'm in Dublin until next week so won't be able to check until then. Ping me directly if you don't hear from me by, say, Thursday. P.S. - If anyone has an NCD 700-series or HMX (esp HMXpro24) they don't want, let me know. KJ

9 years, 7 months

4
4
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Perq 1 troubles

by tmfdmike＠gmail.com

Just on the off-chance... does anyone have schematics for the Perq 1 portrait monitor? Mine is sick... and there are none on bitsavers. On first power-up there was a faint raster pattern but that quickly vanished and now there's no sign of life from the tube heaters... Thanks Mike http://www.corestore.org 'No greater love hath a man than he lay down his life for his brother. Not for millions, not for glory, not for fame. For one person, in the dark, where no one will ever know or see.'

9 years, 7 months

2
4
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1993 Mt. Xinu calendar

by aperry＠snowmoose.com

In a box of my old stuff, I found a copy of the Mt. Xinu calendar for 1993, the last year that they did a calendar, and scanned it. Some of you may fondly remember the Mt. Xinu calendars so I am hosting what I scanned so folks can download it. It can be found at: http://wildwestrally.org/afp/IMG_20161110_0001.pdf. Enjoy, alan

9 years, 7 months

5
5
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NCD19 / Xncd19

by rp＠servium.ch

Hi all I'm trying to resurrect my NCD19 for vcfe.ch but I can't find the firmware for it (I have half a dozen different versions of NCDware, but most don't contain the boot images, and none have the binary for the ncd19, only ncd15b, ncd19r, ncd19c etc. which don't work). And all links I find on the internet are dead ;( I appreciate any help tracking that down. Rico

9 years, 7 months

7
8
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SPRAGUE capacitor for Tektronix 4051.

by mattislind＠gmail.com

One of the DC filter capacitors has gone open circuit in my Tektronix 4051. It is a SPRAGUE 9600 uF - 30VDC with a little bit unusual foot print. It might be common for other Tek equipment. Google turned up one Ebay-hit for a completed auction but that's it. Anyone has a reliable source for this type of capacitor: http://i.imgur.com/P0Nz5KW.jpg

9 years, 7 months

8
9
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Looking for terminals again

by fink＠stenoweb.net

The interest in video terminals has been awoken again, and I am again searching for one. I like the look/size of the VT220s, very nice and compact! Anybody have extra DEC or IBM terminals in Toronto (Canada) ? I?m probably somewhat interested! -brian

9 years, 7 months

3
4
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Fwd: TSC UniFLEX 68k

by aek＠bitsavers.org

seeing if 'x'x'x' is tripping the list profanity filter -------- Forwarded Message -------- Subject: TSC UniFLEX 68xxx Date: Sat, 12 Nov 2016 12:38:38 -0800 From: Al Kossow <aek at bitsavers.org> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> I wanted to see if anyone has any more information or software distribution disks than what I just put up on bitsavers under tsc and gimix. I have a hard disk image for the GMX Micro-20 that I just bought on eBay, but no distribution floppies. I didn't realize that the 68K version was so uncommon, since the 6809 version seems to be everywhere.

9 years, 7 months

2
2
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HP-150 tech manual up now on bitsavers

by aek＠bitsavers.org

The person working on Integral PC emulation in MAME asked for it, so it's up now under pdf/hp/hp150 Unfortunately, what he was looking for was info on the graphics ASIC, which isn't really talked about at all :-(

9 years, 7 months

1
0
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Wanted: RL02 terminator

by tomjmoss＠googlemail.com

Hi All, I've just picked up an 11/53 with an RL02, but there's no terminator. Does anyone have one for sale? (or trade perhaps?) Regards, -Tom

9 years, 7 months

1
0
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Old Epson printers

by ard.p850ug1＠gmail.com

Talk of the MX-80 has reminded me of a couple of more obscure models... The first is the TX80. This, I think is a little older. The mechanism is strange, it has one DC motor (and no steppers). The motor drives a dual-pitch scroll thing (sort of a coarse leadscrew) that as it turns in one direction moves the printhead left to right and then returns it more rapidly. On the return journey it (mechanically) causes a linefeed. I have never seen a complete TX80, but the mechanism turned up in an early Commodore printer (2023 or some such) and I think I have a logic board from the Epson one somewhere. The other is a bit later. The HI-80. This is a 4 (ballpoint) pen plotter. No, not the well-known Alps mechanism. This has the 4 pens on a sliding mechanism on the carriage. It is moved by running the carriage into the end stops (!). There are the obvious 2 stepper motors (one for carriage movement, one to move the paper) and a solenoid to lower the pen. The HI-80 certainly has the connector for optional interface boards. I think the TX80 does as well. Incidentally I am looking for any manuals for the HI-80. Documentation on the TX80 would be interesting too. -tony

9 years, 7 months

2
2
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more on lisp compilers

by rlloken＠telus.net

So last week there was some conversation about lisp compilers and an expressed interest in old VAX lisp comilers. Co-incidently, I was rooting through the morgue at work on semi legitimate business and found VAXlisp 2.2 copyright 1987. Sadly, it is on a TK50 and is the Ultrix version. Since it sparked my interest, I went through the rest of the pile but no VMS lisp compiler was unearthed. I found o-l-d VAX/VMS ADA, C, basic, pascal, fortran compilers but no lisp compilers and all on moldering TK50s lying in wait for any hapless tape drive that may accept them. Oh yes, this is all VMS 5.5-1 stuff, there seems to be an entire distro there plus a lot of layered products. These are reduntant, my employer's last VAX is now sleeping in my basement. -- Richard Loken VE6BSV, Systems Programmer - VMS : "...underneath those Athabasca University : tuques we wear, our Athabasca, Alberta Canada : heads are naked!" ** rlloken at telus.net ** : - Arthur Black

9 years, 7 months

5
4
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Epson MX-80 Technical Manual?

by spacewar＠gmail.com

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… but I was unable to actually download it.

9 years, 7 months

12
33
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What the heck is the deal with this eBay item

by AppleCorey＠optonline.net

https://www.ebay.com/itm/272433760795 This Helios II has been "sold" multiple times for varying amounts and then suddenly hours later appears for sale again. I'm done bidding on this each time it appears, because if I won, who knows what I'd receive or if the seller would cancel the auction. corey cohen u??o? ???o?

9 years, 7 months

10
15
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old DEC drives available

by sales＠elecplus.com

_____ WTS the following items: 3 Used DEC DSP3107L 1.07GB 3.5IN 3H SCSI 50PIN 4 Used DEC RH20E-DB 510 Meg SCSI Drive -DSP 3201L RH31K-AW _____ Jim Firlik Excess Enterprises (817) 267-9700 email: jim at 4excess.com _____ I have no idea what he wants for them. Not affiliated with the seller. I just know these are getting harder to find. Cindy Croxton Electronics Plus

9 years, 7 months

1
0
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General TC11 DECtape diagnostic/formatter questions

by jnc＠mercury.lcs.mit.edu

> From: Christian Corti > Seems the original must have been the XXDP TC11 DECtape formatter > program by Robert J. Collins. I have no clue where I found the RT11 > version of this So that made me wonder if the V6 Unix version of tcf.s really was related to DTF.MAC. I checked out the two of them, and it seems they are likely un-related; very different structure, etc. BTW, I noticed a couple of places in DTF.MAC where error checking code was commented out, e.g.: ;EHLT4: XX ;HALT WITH BLK#IN LIGHTS, CONTINUE ; MOV #257.,R0 ;TO FIND DATA WORD POSITION ; ADD TOG1,R0 ;DETERMINE WHICH WORD IS WRONG ;EHLT5: XX ;HALT WITH #OF WORD IN LIGHTS. 0=REV. CHKSUM ; MOV @TCDT,R0 ;CONTINUE TO FETCH BAD WORD ;EHLT6: XX ;HALT WITH BAD DATA IN LIGHTS. CONTINUE Maybe it would be useful to un-comment them? > On Nov 9, 2016, at 5:57 PM, Josh Dersch wrote: > I believe S/B is the expected data Yes, probably stands for 'should be'. Noel

9 years, 7 months

2
1
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General TC11 DECtape diagnostic/formatter questions

by jnc＠mercury.lcs.mit.edu

> From: Josh Dersch >> The UNIX V6 distro includes a standalone program, tcf.s, to format >> DECtapes. > 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. I had a look at tcf.s, and it depends on having been loaded by the V6 disk bootstrap - it uses the console driver in the bootstrap (the bootstrap leaves a pointer to it in R5). So it might be easier to use that DTF.MAC, which seems like it's mostly the same program, and which you apparently already have working? If you'd still like to use the V6 tcf, due to the teletype driver issue, probably the easist thing is that I could make up a miniature disk image (RK05, if you have that available), with both the V6 bootstap, and tcf on it. Otherwise, I might be able to cobble something together; a hacked version of tcf including the console driver, or something like that. > Something that XXDP can load would be useful. I know nothing of almost any DEC software, alas - I'm assuming it can handle .LDA files, but I don't know which format it prefers. > From: Christian Corti > I enhanced DTF with some useful messages and error/status output. IIRC > the "original" version produced no messages at all. Having just looked at the original :-), it did have two messages: "ready drive 0 and type y" and "tcf: error" (Shades of 'ed'.... :-) Noel

9 years, 7 months

2
1
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OT: Excessive bounce notices?

by vintagecomputer＠bettercomputing.net

I get hit by that every couple of weeks. ?I still have no idea what a 'bounce' is or what I'm doing or not doing to cause it to drop me. ?Kind of frustrating because it just drops me and then I miss chunks of conversations I'm watching. Sent from my Samsung device -------- Original message -------- From: Curious Marc <curiousmarc3 at gmail.com> Date: 2016-10-22 2:42 PM (GMT-08:00) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: OT: Excessive bounce notices? Got the excess bounce warning and membership disabled too. Just clicked the link on the message to re-enable myself. Hopefully it worked, since I'm still here... Marc > On Oct 22, 2016, at 9:22 AM, Liam Proven <lproven at gmail.com> wrote: > >> On 22 October 2016 at 17:27, Adrian Graham <witchy at binarydinosaurs.co.uk> wrote: >> Ditto, and ditto. I also thought it was due to the dyndns attack so just >> resubbed after emailing Jay, but if everyone did that who got an excessive >> bounce message the poor chap will have quite a full inbox. > > Yes, me too. > > -- > Liam Proven ? Profile: http://lproven.livejournal.com/profile > Email: lproven at cix.co.uk ? GMail/Twitter/Facebook/Flickr: lproven > Skype/MSN: lproven at hotmail.com ? LinkedIn/AIM/Yahoo: liamproven > Cell/Mobiles: +44 7939-087884 (UK) ? +420 702 829 053 (?R)

9 years, 7 months

3
2
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The original Sun-1 workstation one more time

by rlloken＠telus.net

I made some silly noise about a Sun-1 owner's manual recently (and I still haven't sent it out). Today, while browsing in the morgue I found an apparantly unused CDC Lark cartridge with a factory label declaring it to be Unix 1.1 boot media. Is there a functional CDC Lark surviving some place? Sure isn't one here. -- Richard Loken VE6BSV, Systems Programmer - VMS : "...underneath those Athabasca University : tuques we wear, our Athabasca, Alberta Canada : heads are naked!" ** rlloken at telus.net ** : - Arthur Black

9 years, 7 months

1
0
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RE: Various Software and Documentation for shipping + donations (round 2, much delayed)

by barythrin＠gmail.com

Cindy as in electronic plus? -------- Original message --------From: "Tapley, Mark" <mtapley at swri.edu> I'm trying to help Cindy find homes for some of what's left from her warehouse. I can hold them only temporarily ( :-) )

9 years, 7 months

1
0
0 0

MACRO11

by j_hoppe＠t-online.de

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

9 years, 7 months

4
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General TC11 DECtape diagnostic/formatter questions

by jnc＠mercury.lcs.mit.edu

> 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

9 years, 7 months

2
1
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ISO Telenex/Atlantic Research protocol analyzer tech manuals

by aek＠bitsavers.org

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.

9 years, 7 months

3
5
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AS400 9406-170 available.

by lbickley＠bickleywest.com

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=sha… 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"

9 years, 7 months

1
0
0 0

Wang 2243 drive enclosure

by jason＠smbfc.net

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? --Jason

9 years, 7 months

3
4
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HP 9826A on Epay

by hp-fix＠xs4all.nl

I was jusy crawling ePay and found this one. For who is interested, about one hour left, 1 bid $100,- at this moment. I'm not the seller or affiliated with him or her. http://www.ebay.com/itm/HP-9826-Hewlett-Packard-With-Catalog-parts-Or-Repair -Only-/172369586516 <http://www.ebay.com/itm/HP-9826-Hewlett-Packard-With-Catalog-parts-Or-Repai r-Only-/172369586516?hash=item2822072954:g:NPMAAOSwmLlX8XkP> -Rik

9 years, 7 months

7
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PDP 11/20 sold (ebay warning)

by jwsmail＠jwsss.com

Looks like someone put in a high enough bid to hold onto the 11/20 that went today. I guessed an amount around what it went for would be what I'd pay, so don't know if I'd have gotten it or not, but didn't try since that was around the 3500 dollar level. (it sold for $2961). The fun thing is the buyer is also buying vintage clothing and the like according to Epay's useless buyer history it gives out now. There were three other bidders that doubled the price in the last 8 seconds. It was a nice machine, though the seller said it had developed a problem in the memory. thanks jim http://www.ebay.com/itm/222300550527

9 years, 7 months

4
3
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PDP 11/20 sold (ebay warning)

by COURYHOUSE＠aol.com

now I know what ours is worth! $ed In a message dated 11/7/2016 5:55:19 P.M. US Mountain Standard Time, jwsmail at jwsss.com writes: Looks like someone put in a high enough bid to hold onto the 11/20 that went today. I guessed an amount around what it went for would be what I'd pay, so don't know if I'd have gotten it or not, but didn't try since that was around the 3500 dollar level. (it sold for $2961). The fun thing is the buyer is also buying vintage clothing and the like according to Epay's useless buyer history it gives out now. There were three other bidders that doubled the price in the last 8 seconds. It was a nice machine, though the seller said it had developed a problem in the memory. thanks jim http://www.ebay.com/itm/222300550527

9 years, 7 months

2
1
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PDP8a CPU fixed! (was Re: DEC DELQA - seems not to work. Anyone got a spare?)

by thebri＠gmail.com

On Mon, Nov 7, 2016 at 11:44 AM, Ian S. King <isking at uw.edu> wrote: > I love reading stories of component-level repair. > Assuming my notes and sketchy memory make any sense: One of my PDP 8a CPU boards (the M8315) passed all the self tests I could toggle in, EXCEPT, it would ignore HLT instructions. It'd just blow right through them. That'll get you questioning your sanity real quick. Several hours of squinting at schematics said I'm looking for the STOPL signal - I found three or four places, one of which involved a ROM (at least my notes say there is a ROM involved). Uh oh. Page 3-17 of the microprocessor user manual lists when STOPL is asserted. Basically, front panel or HLT. Page 4-39 has the logic for the front panel, and that was enough to narrow it down to one instance of STOPL in the schematics, in the middle of page H-9. E39 (an 8881 aka 7439) or E33 (a 7402). I swapped those two out, repaired the trace that I busted, and viola! HLT now works. I vaguely remember it was the 8881 at fault. BTW, I'm open to suggestions as to how to even begin debugging an HP 1000 E Series. There seems to be a case holding a power supply in the way of any access to the motherboard. The machine fails to exit the 'counting' self test right after power up. I plan on writing up a better description once it gets cold and snowy out, so don't feel bad if you don't see this plea for help. Cheers! b

9 years, 7 months

1
0
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It's BASIC Week again!

by fozztexx＠fozztexx.com

I do a regular contest on RetroBattlestations called BASIC Week which is a sort of tribute to the days when it was common for programs to be published in books and magazines and people would type them into their computers. One of the neat things about distributing software through type-in listings is that there?s no need for working disk drives or tape drives, or to do complicated things like get a serial connection working and find a way to transfer files. If a computer has built-in BASIC just turn it on and start typing! Past programs have displayed vector graphics, silly text screen animations, and a couple of games. This time around the program is called Winchester Drive and the concept is to explore a mansion to see what you can find. I decided this time around to try out true sprites and made a version for both the Apple II and Commodore 128. I wanted to do a Commodore 64 version but couldn't find any line drawing routines written in assembly anywhere! I thought for sure in the last 33 years some book or magazine somewhere would have written a couple of simple routines to clear the graphics screen and draw some lines that you could POKE in and then call with SYS. Oh well, I will leave the C64 version to someone else. :-) The challenge is more about honor and glory and getting an excuse to show off old computers and/or skills with porting, but I do give out vinyl decals & stickers for prizes (http://imgur.com/a/iAS5T). I know that the TI-99/4A, Atari 400/800, Coleco Adam, MSX, and maybe some others also had sprites. Sprites aren?t really needed for porting to other systems, they?re just an easy way to move the player around the screen. The program could definitely be ported to systems that use simple character graphics or even plain text screens. The complete source code has been posted to github, and you can see the full rules and check out other submissions here: https://redd.it/3ko0nd -- Follow me on twitter: @FozzTexx Check out my blog: http://insentricity.com

9 years, 7 months

9
15
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TEAC-55Fxxx

by emu＠e-bbes.com

Anybody has a spare to sell, give away, trade? Thanks

9 years, 7 months

3
2
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Sage II

by emu＠e-bbes.com

Hi all, finally found myself a SAGE II. (no software) Anybody could help me out with the floppies for it? Was there a kermit version for it? Cheers & thanks

9 years, 7 months

8
41
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Looking for terminals again - oops

by fink＠stenoweb.net

Whoops, looks like I sent this to the wrong cct*** email, apologies! My interest in video terminals has been awoken again, and I am again searching for one. I like the look/size of the VT220s, very nice and compact! Anybody have extra DEC or IBM terminals in Toronto (Canada) ? I?m probably somewhat interested! -brian

9 years, 7 months

1
0
0 0

Mac SE NVRAM battery removal

by jules.richardson99＠gmail.com

So I'm working my way (more slowly than I probably should be) through my systems, ditching ancient on-board batteries before they leak... In the case of the Mac SE's, are there any critical settings which I should make a note of before removing the on-board battery? Should I expect any issues trying to run the machines without? (I'm not inclined to replace batteries unless I have to, just so I don't have to worry about replacement again in x years time) cheers Jules

9 years, 7 months

4
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DEC DELQA - seems not to work. Anyone got a spare? [SOLVED]

by jzatar2＠illinois.edu

>On 2014-10-26 3:07 PM, Toby Thain wrote: >>* On 21/10/14 7:38 AM, Noel Chiappa wrote: *>>>* > From: Toby Thain *>>>>>>* > Looking to see what the internal self-test returns as an error *>>>* code *>>>* > (that can be done with console ODT, it doesn't need a program) is *>>>* > probably the first step in diagnosing. *>>>*... *>>* OK, after powerup, the bits of the VAR register (e/w/p 2000192c) are *>>* D800, i.e. the test result bits VAR12:10 are 1,1,0 - meaning RAM test *>>* failed. *> >Hi all, > >As an update to this project, I can report that the DELQA has been >repaired with four new static RAM chips, and now the MicroVAX II's >network is fully working (including netboot). > >Credit due to Joe Zatarski (joe_z) who did a beautiful job of >desoldering and putting sockets in for the four RAM chips. > >--Toby Glad to have helped :) Joe Zatarski >>>>* I must be doing something wrong running the test manually, though - *>>>>>>>* d/w/p 2000192c 2000 *>>>>* Just leaves 2000 in the VAR register, permanently. *>>>>* --Toby *>>>>>>>>>>* Noel *>>>>>>>

9 years, 7 months

2
1
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[ex-convex] Re: Fwd: Audio interview that mentions my Convex

by aswood＠t-online.de

A very interesting story. Now we do need detailed information, schematics, maintenance procedures and software for C1,C2,C38 as well for SPP systems. My SPP1600XA, which I used e.g. to heat my cellar stopped operation due to breaking the voltage limit using psu_util. @Camiel: would you like to swap one of your C1 for an X or S-Class? My S-Class is using 48 PA-Risc processors. Andreas > Am 07.11.2016 um 14:50 schrieb steve wallach <steve.wallach at gmail.com>: > > all correct > > actually the story goes as follows > > .he had his sabattical year coming. however, he would still go into his office to use the convex. > > .so i offered him a FREE return C1 (returned after an upgrade to a C2). he would have to pay for the maintenance and pay for the electrical system needed in his basement. > > .prof jameson is brilliant and people all over the world would come to visit him. during his sabattical they would come to his house and he delighted in showing them his OWN SUPERCOMPUTER in his basement. also after his sabbtaical finished. > > .we sold several systems based on his use of the convex. > > .when he presented papers, he always said, ?i ran these simulations on my own convex supercomputer in my basement?. we got an enormous amount of press and good will. > > > > --- > + Ex-Convex Mailing List, list at ex-convex.org, http://www.ex-convex.org/ > + To unsubscribe, send an email to leave-ex-convex at ex-convex.org > + To subscribe, send an email to join-ex-convex at ex-convex.org

9 years, 7 months

1
0
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Analogue monitor board repair

by witchy＠binarydinosaurs.co.uk

Folks, I think I know the answer to this before I even ask, and that answer will be 'got a schematic' to which the answer's 'no and I doubt one exists any more' but... My recent Executel addition has a 5" screen with associated analogue board that seems to be powered from a display chip I can't find any info on, and at least one of the adjustment potentiometers has suffered metal fatigue and broken: http://www.binarydinosaurs.co.uk/STCExecutelScreenPot.jpg http://www.binarydinosaurs.co.uk/STCExecutelAnalogueBoard.jpg http://www.binarydinosaurs.co.uk/STCExecutelDisplayChip.jpg I've replaced it with a seemingly common 10K modern part that I had in my spares box but it's unknown whether the display worked at all prior to it being put in very damp storage, also the rating of the failed pot isn't known but the capacitor next to it is 50V. I've also removed, checked and replaced out of spec capacitors, one of them was a 680nF 50V radial. I could only find a 63V PET version on cpc's website and did much reading on differing capacitor types, concluding that it SHOULD be OK. Power supply is known good because it's one of my working ones, the original is still dead. Hence the question - am I wasting my time without a schematic for this analogue board? Cheers! -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?

9 years, 7 months

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What hardware runs 2BSD (was Re: For sale 128K Core RAM Industrial PDP 11/40 Massbus System)

by ethan.dicks＠gmail.com

On Mon, Oct 31, 2016 at 11:11 AM, emanuel stiebler <emu at e-bbes.com> wrote: > On 2016-10-31 08:48, Ethan Dicks wrote: > >> One of the great recent updates was backporting the MSCP driver from >> 2.11 to 2.9. That opens up KDF11 MicroPDP-11s to running 2.9 with an >> RQDX3. Prior to that availability, one needed an RLV12 or other Qbus >> disk controller for that platform. > > I missed that :( About 15 years ago, Jonathan Engdahl backported the MSCP driver to 2.9BSD... > more details? First hit: http://home.windstream.net/engdahl/2_9bsd-mscp.htm -ethan

9 years, 7 months

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Altair, IMSAI, SWTPC, etc. for sale in Philly

by barythrin＠gmail.com

Out of curiosity and ignorance what's with the solder joints on the cards in the pictures? That orange color seems like it's everywhere around cold looking solder joints. ?Is that rust, some sort or protection, or acid corrosion? -------- Original message --------From: Mark G Thomas <Mark at Misty.com> Date: 10/31/16? I had the pleasure of visiting Rick yesterday. Please see below additional information about remaining items, with links to photos. Please contact Rick directly if interested. Original posting here: On Tue, Oct 18, 2016 at 08:44:39AM +0000, steven stengel wrote: > --------------------------------------------------------------- > *************? Contact Rick below if interested.? ************* > --------------------------------------------------------------- > Name: Rick Bunker > Contact: rick at bunker.us > Location: Jenkintown, PA??? 10/30/2016 Update:---------------------- > The Altair 8800, a very early one, 4-slot motherboard, 1K ram, ceramic CPU, > you will see: https://goo.gl/photos/3C1pzfwFoZ3koPgt9 >

9 years, 7 months

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DEC DELQA - seems not to work. Anyone got a spare? [SOLVED]

by toby＠telegraphics.com.au

On 2014-10-26 3:07 PM, Toby Thain wrote: > On 21/10/14 7:38 AM, Noel Chiappa wrote: >> > From: Toby Thain >> >> > Looking to see what the internal self-test returns as an error >> code >> > (that can be done with console ODT, it doesn't need a program) is >> > probably the first step in diagnosing. >>... > OK, after powerup, the bits of the VAR register (e/w/p 2000192c) are > D800, i.e. the test result bits VAR12:10 are 1,1,0 - meaning RAM test > failed. Hi all, As an update to this project, I can report that the DELQA has been repaired with four new static RAM chips, and now the MicroVAX II's network is fully working (including netboot). Credit due to Joe Zatarski (joe_z) who did a beautiful job of desoldering and putting sockets in for the four RAM chips. --Toby > > I must be doing something wrong running the test manually, though - > >>>> d/w/p 2000192c 2000 > > Just leaves 2000 in the VAR register, permanently. > > --Toby > > >> >> Noel >> > >

9 years, 7 months

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New email address

by ard.p850ug1＠gmail.com

My ISP (which I have used for 20-odd years) has decided to drop its e-mail service.... My new address (at least for the moment) is : ard.p850ug1 at gmail.com If any of you mail me privately, please use that from now on.... -tony

9 years, 7 months

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Tek 4051 with a 10 year old at the helm

by rdawson16＠hotmail.com

Here is my daughter Gina, I thought you guys would like, Tek is still exciting. Sure, we have lots of PC's around the house, but this is the first one that she is programming, and programming the 4051 creates a smile. Randy https://youtu.be/o0LiYkHG3iE

9 years, 7 months

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S/36 in Milwalkee

by seefriek＠gmail.com

Noticed this on Nekochan: http://forums.nekochan.net/viewtopic.php?f=4&t=16731198 No affiliation ----- Hi, I have an IBM 5360 with all of the manuals, cables, etc. The monitor is missing. There are boxes and boxes of manuals, modems, cables, etc. This is free for someone who wants to pickup in Milwaukee. This posting will be active for a week. If I do not have any takers, it is going to recycling. Thanks!

9 years, 7 months

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Epson MX-80 Technical Manual?

by COURYHOUSE＠aol.com

Kevin - - remember HP did this... using the MX-80 also... (data from hpmuseum.com) Name: 82905 Product Number: 82905 Introduced: 1981 Division: _Corvallis_ (http://hpmuseum.net/divisions.php?did=18) Ad: _Click to see with HP-87_ (http://hpmuseum.net/upload_htmlFile/PrintAds/Ad1982_May_HP-87_Spectrum-32.j…) Original Price: $945 Catalog Reference: 1982, page 655 Donated by: Russell Warmington, HP Australia. Description: The 82905A was a low-end, narrow-carriadge dot matrix printer made by Epson. HP obtained this printer primarily for use with the _80 Series_ (http://hpmuseum.net/exhibit.php?class=1&cat=9) computers. The 82905A had a print speed of 80 characters per second. The dot character cell was 9 x 9 and graphics printing resolution was possible up to 72 x 120 dots per inch. The 82905B, introduced in 1982 (at $795) offered an optional HP-IL interface. The 82905A was OEM'ed from Epson by the Corvallis Division. The product was transferred to the Vancouver Division in 1982. and then with the FX 80! Impact Selection: Name: 82906 Product Number: 82906 Introduced: 1983 Division: _Personal Computer Division_ (http://www.hpmuseum.net/divisions.php?did=18) Original Price: $995 Catalog Reference: 1984, page 594 Description: The 82906A, like the _82905A_ (http://hpmuseum.net/display_item.php?hw=321) was also OEM'd from Epson (model FX-80) by HP. It was faster (160 characters per second), with a higher resolution dot cell matrix (9 x 11). Maximum resolution in graphics printing was 72 dots per inch. In a message dated 11/5/2016 8:57:56 A.M. US Mountain Standard Time, kevenm at reeltapetransfer.com writes: 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_-_technica l_manual.pdf Keven Miller ----- Original Message ----- From: "Scott Kevill" <scott at kevill.com> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> 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 <spacewar at gmail.com> 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… > but I was unable to actually download it.

9 years, 7 months

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WTB several IMSAI-8080 ON-OFF-ON momentary switches

by Mark＠Misty.com

Hi, Does anyone have any available? I don't need the paddles, just the the ON-OFF-ON momentary switches. I got good ON-OFF address/data ones from Herb Johnson, but the momentary ON-OFF-ON ones I have are worn out and do not return to center properly. Mark -- Mark G. Thomas (Mark at Misty.com), KC3DRE

9 years, 7 months

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Tandem K2000 up for auction

by linimon＠lonesome.com

Just went through the proxibid site looking for more "treasures". Anyone in Miami FL need a new-in-crate Tandem K2000? Oh yeah you have to take all the junk next to it :-) https://www.proxibid.com/aspr/Tandem-Server-Speakers-Cash-Registers-and-Ton… mcl

9 years, 7 months

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S/36 in Milwalkee

by jnc＠mercury.lcs.mit.edu

> I don't usually post here so if I am somehow posting wrong please tell > me. Nope, you're good. Good luck with the machine! And thanks ever so much for posting all the info that goes with it. Noel

9 years, 7 months

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