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

by mloewen＠cpumagic.scol.pa.us

Does anyone here have a Sun keyboard interface converter they want to sell, such as a Sun X465A or Ultraspec 5167? Should convert PS/2 keyboard and mouse for use on an older Sun system. Mike Loewen mloewen at cpumagic.scol.pa.us Old Technology http://ripsaw.cac.psu.edu/~mloewen/Oldtech/

20 years, 9 months

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racking an 11/34a & 11/44 - help?

by brad＠heeltoe.com

[I feel like I should be holding a cup of coffee and saying, "Hello, My name is Brad and I have several unibus 11's..." :-)] I want to rack up my 11/34a and 11/44. Neither came with rack slides. The 11/34a has a long silver plate on the side with little "T handles" in the front (some sort of release). The 11/44 has some big oddly-round shapped thing on the sides, obvious to allow it to be rotated after being pulled out on it's slides. Both look like they want some sort of specialized slide. Can someone give me a list/idea/pointer to what hardware do I need? Is this stuff I can find or is it hard to find? (now that I think if it, I should probably go look at some of the pdfs to see if I can figure it out from that) thanks! -brad

20 years, 9 months

1
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Building M8027 hookup

by ajp166＠bellatlantic.net

> >Subject: RE: Building M8027 hookup > From: "a.carlini at ntlworld.com" <arcarlini at iee.org> > Date: Wed, 07 Dec 2005 08:39:45 +0000 > To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> > >Allison wrote: > >> I have most of the microprocessor handbooks, nterfacing handbooks and >> the DEC Field service guide, NADA! >> >> The LAV-11 is limited to LA180, the LPV-11 is configurable for LA180 >> I've used both for "other" though the LAV-11 needed a few red wires. > >I'm late to this discussion so I'm not sure exactly what >is needed. The LSI-11 Systems Service Manual has a page or >two on both the LAV11 and the LPV11 (and I promise to start >uploading it all to manx tonight ...). > >The LAV11 uses a BC11S cable for the LA180 and a 7009087 for >Centronics models (101, 101A, 101D, 102A and 303). > >In the case of the LA180/BC11S, the P2 end of the cable attaches >to the LA180. You also need to fiddle with the LA180 jumpers and >the LAV11 jumpers. The LPV11 is the replacement for the LAV11. > >If what is really needed is the pinout of the BC11S, then >none of this will help (unless knowing the cable type helps >- there seems to be one place on the net selling these). > >Antonio What is missed being late is the printer at the end is not a DEC LA series or DataProducts. He wishes to use a PC compatable (centronics) printer. Thats doable but the cable is not DEC stock though one could be modified to match the pinout. Allison

20 years, 9 months

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PDP-11/44 system reference card ?

by young＠ecn.purdue.edu

All this talk about the PDP-10 reference card reminds me that I have misplaced my copy of the PDP 11/44 system/console reference card. It was a white trifold arrangement, as I recall, printed on both sides. Anyone got one they'd be willing to scan in? Mike Young young at ecn.DIESPAMDIEpurdue.edu

20 years, 9 months

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IBM AS400?

by compoobah＠valleyimplants.com

Disclaimer: all of this is based on what I heard/found out while looking at getting one Not a bad machine, as long as you want to run OS/400 and (generally) program in RPG. IBM never released any information about programming the actual hardware, just the software middle-layer (can't remember what it's called just now). The new machines could possibly be inferred, as they use PowerPC/ RS64 chips, but that may or may not help you because the other logic is undocumented. CISC AS/400s are an interesting architecture, no hardware memory protection, it's all taken care of in software. BIG GOTCHA- you need to make sure your machine comes with not only the OS, but also the mashine-specific intermediate layer software. Unless you have a friend at IBM, they may be happy to give you a replacement in return for much cash, or they may do the snooty Maitre d' thing . . . and OS/400 is rumored to lock itself after a certain period of inactivity as well. In short, it sounded to me like a 50/50 chance of having something cool or a nightmare, so I let the opporitunity slide.

20 years, 9 months

6
5
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Building M8027 hookup

by ajp166＠bellatlantic.net

> >Subject: Re: Building M8027 hookup > From: Useddec at aol.com > Date: Tue, 06 Dec 2005 20:01:54 -0500 (EST) > To: cctalk at classiccmp.org > >Aren't the pinouts in the handbook? I think the LAV11 (M7949) was for the >LA180 only. > >Paul I have most of the microprocessor handbooks, nterfacing handbooks and the DEC Field service guide, NADA! The LAV-11 is limited to LA180, the LPV-11 is configurable for LA180 I've used both for "other" though the LAV-11 needed a few red wires. I've done it but the last time was back before the letters went to magenta. Allison

20 years, 9 months

3
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Cap reformation question

by pete＠dunnington.plus.com

On Dec 6 2005, 18:00, woodelf wrote: > margin. I also feel safe with new cap rather than a patched one. The "new" capacitor that's been sitting on the supplier's shelf for a year or two probably still needs reformed. Don't confuse heat damage, which makes capacitors dry out, with aging which causes breakdown of the oxide layer. Electrolytics only retain their proper characteristics when operated regularly. -- Pete Peter Turnbull Network Manager University of York

20 years, 9 months

1
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HP86B/HP85 PSU testing - where to start?

by vp＠cs.drexel.edu

listmailgoeshere at gmail.com wrote: > You may remember the big stack of HP85s/HP86Bs I pulled from a > dumpster a few months ago. > > Googling for the service manual hasn't been productive. something similar to an assembly-level repair for the HP-85 may be found at: http://www.series80.org/PDFs/HP85-RepairCourse.pdf This is guide designed to teach repair technicians how to service the HP-85A and HP-85B Personal Computers. For the HP-86 you can find the assembly-level repair manual at: http://www2.akso.de/files/series_80/Assembly_Level_Service_86B.pdf but I think the quality of the scan leaves much to be desired. Also you can find Tony's schematics for the 86B at: http://hpmuseum.net/document.php?hwfile=719 Best Regards **vp

20 years, 9 months

2
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Cap reformation question

by ajp166＠bellatlantic.net

> >Subject: RE: Cap reformation question > From: "Joe R." <rigdonj at cfl.rr.com> > Date: Tue, 06 Dec 2005 21:48:03 +0000 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >At 06:25 PM 12/6/05 -0600, you wrote: >>I take a bench power supply and a resistor and bring the caps up that way- >sometimes you have to disconnect a wire or two, but not always, and the >resistor gives you a degree of safety a straight variac wouldn't. >> >> > > That's what I was thinking of doing. I keep a bunch of HP adjustable >voltage/ adjustable current supplies around and they've come in handy for >LOTs of different things. (I used one tonight to recharge and test some >lead-acid batteries for my HP 5315 Freq meter then used to same supply to >manually drive the VCO LO in a spectrum analyzer that I'm working on.) > > Q: How high of a voltage do you use the reform the caps? I'm wondering >if it's necessary to apply full (or nearly full) rated voltage or if >they're fully reformed at say 5 VDC. Has anybody done any testing in this >area? > > Joe They need to be formed to at least the working voltage, it's better if you can go closer to the rated voltage. My trick has been a low current (120V pannel lamp) in series with whatever supply was needed/handy. The lamp (under 1W) will limit current flow and they are cheap. Switch mode supplies are very risky at below rated voltage as the operating currents in many (older ones) gies up with decreasing voltage. This are best carefully, removing the caps and forming them out of circuit may be advised. Allison

20 years, 9 months

2
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Cap reformation question

by compoobah＠valleyimplants.com

I take a bench power supply and a resistor and bring the caps up that way- sometimes you have to disconnect a wire or two, but not always, and the resistor gives you a degree of safety a straight variac wouldn't.

20 years, 9 months

3
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Building M8027 hookup

by Useddec＠aol.com

Aren't the pinouts in the handbook? I think the LAV11 (M7949) was for the LA180 only. Paul

20 years, 9 months

1
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Building M8027 hookup

by ajp166＠bellatlantic.net

> >Subject: Building M8027 hookup > From: "Wolfe, Julian " <ISC277 at CLCILLINOIS.EDU> > Date: Tue, 06 Dec 2005 18:06:31 -0600 > To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> > >OK, I'm trying to build myself a hookup for an M8027(LPV11) to run to my >distribution panel. > >I've done some reading, and it is clear that this is a Centronics compatible >card, so I have the right one. > >Does anyone know the pinout for this device? I'm confused. I know you can >use other printers with this card, and I'm just looking to do raw text to an >old Panasonic dot matrix printer - but I don't know what signal is what. > >As usual, any help is appreciated. > >TIA > >Julian Find thee the schematic for LPV11 as that is the only document I know of that says what pins on J1 are what. I did One years ago and that was what I had to do back then. Also there are jumpers that need to be correct as that board would drive LP2x, LP05, and LA180 and LN01 printers (data products parallel). Correctly wired any of the Centronics parallel printer equivilents used with the XT class stuff (even an HP4L) work well with it. It is otherwise trivial thing. If memory serves that LAV-11 had the same pinout of it's J1. Allison

20 years, 9 months

1
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Building M8027 hookup

by ISC277＠CLCILLINOIS.EDU

OK, I'm trying to build myself a hookup for an M8027(LPV11) to run to my distribution panel. I've done some reading, and it is clear that this is a Centronics compatible card, so I have the right one. Does anyone know the pinout for this device? I'm confused. I know you can use other printers with this card, and I'm just looking to do raw text to an old Panasonic dot matrix printer - but I don't know what signal is what. As usual, any help is appreciated. TIA Julian

20 years, 9 months

1
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Exatape 8MM 112m and 160MXL, ETC

by Useddec＠aol.com

Hi, I have about 50 112M and 175-200 160MXL , and several hundred other ones in my way. Accepting offers on pieces or the entire lot. Thanks, Paul

20 years, 9 months

1
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DEC firmware

by compoobah＠valleyimplants.com

At least some of the Alphas have a failsafe jumper & disk, too, that allows you to recover from failed flashes. Set the jumper, put the disk in, and you can try again.

20 years, 9 months

2
1
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Hrm... Weird Amiga Idea...

by zmerch＠30below.com

I've also got an Amiga 4000T, and I just had a *weird* thought (and coming >from someone who knows almost nothing about Amigas, that could be a *bad* thing...) It looks like there's 1 slot on the 4000T motherboard that might be an ISA slot - is it? If so, will a plain-jane NE2000 compatible network card work on the thing? (I would think there's drivers for something like that... but who knows at this point.) Here's the *even* weirder idea: I have access to an ISA-based PCMCIA kit, which gives you to front-accessible PCMCIA slots. Are there Amiga drivers for any PCMCIA ethernet kit? (I'm also thinking of using it to access Compact Flash drives... ;-) IIRC, I have AmigaOS 3.5 on the thing. I looked it up quite a while ago, but as the box has very little on it WRT software & whatnot, no way to back it up (beyond floppy, and I ain't doin' that), and no easy way (other than burning CDs) to get stuff on it, I've not really been "motivated" enough to diddle with it as of yet. Anyway, just an odd thought... Laterz, Roger "Merch" Merchberger -- Roger "Merch" Merchberger | "Profile, don't speculate." SysAdmin, Iceberg Computers | Daniel J. Bernstein zmerch at 30below.com |

20 years, 9 months

7
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HP Plotter

by leeedavison＠yahoo.co.uk

>> 1016 into 8388607 is 8256.50... 12 into 8256.5 is 688. >> 688 feet? I'm missing something here. It did say plotter-units, >> not user = units. > Yes, I get that too. Sounds far too large. Maybe that's the limits > of the internal control electronics (that is, the plotter will accept > vaules that large without giving an error), even though they are > phyiscially ridiculous. Don't forget continuous roll plotters can plot images that are only physically limited by the media length, (I can't remember if the one at Uni was HP or not but it was a huge A0 wide roll type) in that case an image of more than 100 feet long is not unreasonable (e.g. hot air balloon panel patterns) and 688 feet doesn't seem quite that big. Lee. .. ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com

20 years, 9 months

2
1
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HP86B/HP85 PSU testing - where to start?

by listmailgoeshere＠gmail.com

Hi list, You may remember the big stack of HP85s/HP86Bs I pulled from a dumpster a few months ago. They've been stored away safely since then, and now I'd like to get started testing them so that I can get them sold. Tony recommended running the power supplies on a dummy load to make sure that none of them are duds. I have a handy bag of Big Resistors that I can make dummy loads out of, however, (in an 86B at least, I've not been into the 85s yet) there's a 10-conductor cable coming out of the PSU and I've no idea what sort of load it might want to see and on which pins. Googling for the service manual hasn't been productive. Can anyone advise? I have the basic tools (multimeter etc., and some cantankerous old oscilloscopes) but don't have any experience doing this sort of thing. Thanks, Ed.

20 years, 9 months

3
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Cap reformation question

by dwight.elvey＠amd.com

Hi My experience with the variac is that it is too uncontrolled. The idea of using a light is good but what wattage should one use. Remember that the light has quite a bit of positive temperature coefficient. When cold the resistance is a lot less then when glowing. If it is a switcher, you shouldn't use a variac at all. You should disconnect one lead of the capacitor and put a series resistor to a power supply. I recommend using a voltage on the supply of at least 50% of the rated voltage and a resistor that if the cap is shorted will supply a maximum of 10 ma to a low voltage cap that is about 1.5 inch diameter and about 3 inches long. Smaller caps should have less current. Many computer capacitors may draw more that 10 ma as lower voltage, higher capacitance caps. If after 10 or so hours at 10 ma, you don't see any change, increase the current some. For high voltage capacitors, you should limit to about 1 or 2 ma. Even on a linear supply, I recommend disconnecting the capacitor and bringing it up with a resistor and supply. Switchers can blow up with too low a voltage. Most newer supplies will be OK but you won't get good forming of the output capacitors since the supply will remain off until the voltage is high enough to start the switcher. This usually means full voltage to the output capacitors. For this and other reasons, I still recommend isolating one of the leads of the cap and using the limited supply. >From: "Robert Armstrong" <bob at jfcl.com> > >JC, > > AFAIK the issue with reforming old electrolytics is that the caps will >have very high leakage currents until they reform. The goal is to limit the >power dissipation of the cap to something low enough that it won't vent (or >explode!) until it's recovered. > > Lots of people use Variacs for this purpose and they'll certainly do the >job, but they don't give you any way to measure the leakage current. I >prefer the simple technique of putting a light bulb in series with the AC >side of the supply - when it's bright, the current is high and as it >gradually dims and goes out, the current is low. > >> maybe leave a junk card in for load?) > > If it's a linear supply then it's probably happy without a load, and >there's no sense in wasting even a junk board. > > If it's a switching supply then it depends on the design, but most likely >it will require some kind of load on at least some of the outputs to >maintain regulation. > >Bob > >> -----Original Message----- >> From: cctalk-bounces at classiccmp.org >> [mailto:cctalk-bounces at classiccmp.org] On Behalf Of J.C. Wren >> Sent: Tuesday, December 06, 2005 7:13 AM >> To: cctalk at classiccmp.org >> Subject: Cap reformation question >> >> >> I've got a system with a couple large electrolytics that >> hasn't been >> powered up in a number of years. I have a 5A Variac. What's the >> typical procedure for the reformation process? Remove all cards (or >> maybe leave a junk card in for load?), start the Variac at >> 0V, increment >> by 10V every so often? How long per step, and/or is a different step >> suggested? >> >> I've seen lots of people say "you'll need to reform the caps, >> first", but never a prodecure for it. >> >> --jc >> >> > > >

20 years, 9 months

1
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CMD (Commodore) D9090 Hard Drive Issue

by billdeg＠degnanco.com

Hello. I have a Commodore "new" D9090. I am experiencing some symptoms that I hope someone can help me diagnose. I don't have the manual for the D9090. I have verified that everything is plugged in, but I have not done any electrical tests. The drive was working earlier this month and then was shipped to me. When I received the drive initially it did not work at all, but pressing lightly on some of the socketed chips to be sure they are making proper contact got me at least to the point I am now. It appears that the package was dropped or vibrated during shipping. I leave the unit powered up for a good ten minutes before turning on my known-to-work Commodore B128. The expected drive initialization lights flash and the system sits waiting for action while the top light shines green, the bottom light is off. Here are the things I have tried: ------------------------- ?ds$ - returns CBM DOS 3, etc. message ------------------------- open 15,8,15 print#15,"i0" [top and bottom lights shine green, drive sounds spinning, never completes.] close 15 NOTE: The first time I run these commands the READY prompt returns to the screen and I can continue working, even though the drive lights perpetually shine green and the drive spins. If I do repeat this set of commands however I will freeze up the computer and I am forced to hard boot the B128. ------------------------- header "degnan9090", d0, i01 The "are you sure?" message appears and I can initiate the drive format. Both lights shine green. The B128 freezes up. Because I have a Rev B ROM, I expect that it will take less than 3 hours to format the drive. In my testing I finally aborted after 10 hours. I know from experience that when a header command is issued, control returns to the B128 (or whatever computer) while the formatting is happening on the drive. ------------------------- dcleard0 - does not appear to move the drive heads. ------------------------- It seems like the heads are not moving and that's the problem. I do not hear "head moving noises" Any suggestions? Bill D Wilmington, DE here are some pics:

20 years, 9 months

1
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DECsystem-10 reference card scan

by alanp＠snowmoose.com

I have a scanned copy of the DECsystem-10 reference card on my web site. I put it up there for someone to grab and I don't have enough diskspace on my site to leave it up (and it is not in bitsavers.org's format, so they don't want it). I'll be deleting it from my website in about a week. If anyone wants it, grab it while you can. The URL is http://www.snowmoose.com/DEC-10-XSRCA-B-D.pdf. The file is about 1.5M. alan

20 years, 9 months

4
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For users of Telenex / AR Datascopes...

by kyrrin＠bluefeathertech.com

This is a note to owners of the Telenex / Atlantic Research 'Interview' 7000 and 8000 series datascopes (sometimes known as serial data analyzers), particularly the 7000, 8700 Turbo, and 8800 Turbo series. I've been fortunate(?) enough to acquire a large stash (over a dozen) of the 8700's and 8800's. I'm in the process of archiving their EPROM and disk images even as I type this. I'm also experimenting with interchanging parts, just to see what happens and to see if a lower-end unit can be upgraded by putting a different set of EPROMs or a backplane PAL in place. I've been reliably informed that one of the units was a sales demo model, and had every possible option enabled in the software. I'm pretty sure I already archived it. I've also archived, among other things, the updated EPROMs necessary for the disk controller board to handle large SCSI drives (850MB at least). If anyone has one of these grand old beasties, and wants to resuscitate it or maybe upgrade it a bit, drop me a note. I can't promise I'll be able to help, but I may just have an answer or component that you need. Keep the peace(es). -=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com kyrrin (at) bluefeathertech do/t c=o=m "If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"

20 years, 9 months

2
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Hrm... Weird Amiga Idea...

by leeedavison＠yahoo.co.uk

> In this case, Ethan Dicks might be the person you want to talk > to. I think he owns the rights to the main Bridgeboard (or was > it the only bridgeboard product). The GoldenGate II bridge card, I have one I got as 'scrap' but all the socketed (PAL) chips were pulled. Unfortunately the GoldenGate II lacks one signal needed to run some 16 bit cards in 16 bit mode so cards like 3Com 3C5x9xx won't work properly. Lee. .. ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com

20 years, 9 months

1
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Wanted: IBM PS/2 system 60 floppy drive.

by dm561＠torfree.net

I've got some PS/2 FDs & HDs somewhere; when (if) I find 'em, I'll let you know. mike (in Toronto) ---------Original Message--------------------------- Date: Mon, 5 Dec 2005 12:56:50 -0800 (PST) From: steven stengel <tosteve at yahoo.com> Subject: Wanted: IBM PS/2 system 60 floppy drive. <snip> If anyone has a working floppy drive they'd be willing to donate, I'd be a happy camper. Thanks! Steve

20 years, 9 months

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NEC 3FGx monitor schematic?

by charlesmorris＠direcway.com

I have an old NEC 3FGx monitor with very little use (belonged to my parents who were not "computer people") that had a beautiful clear picture until recently. There's probably a bad electrolytic cap somewhere, since it now has horizontal problems (small dim display, lack of horiz sync) until it is left on for 20-30 minutes. Can anyone point me to a schematic to make it easier to repair without "shotgunning" caps blindly? thanks Charles

20 years, 9 months

2
1
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Uses for AS400 9040?

by bill＠timeguy.com

I was just given an IBM AS400/9040 at the computer refurb/recycling shop I operate. Is there anything legitimate that it could be used for, or should I scrap it? I know nothing about it other than that it's big and heavy, and it seems to IPL according to the front-panel display. I'm going to try to hook a terminal to it, but I'm not sure how quite yet.

20 years, 9 months

4
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Looking for a Chassis...

by ploopster＠gmail.com

Hi. I'm looking for the chassis to a PS/2 Model 95A server. I don't need the motherboard, just the chassis and power supply, complete with the front panel display and drive bay covers. Anyone know where I might be able to get one for not too much money? Peace... Sridar

20 years, 9 months

2
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Dreamcast was Re: Market for old macs?

by chrism3667＠yahoo.com

I have some sort of web browsing software cd for the Dreamcast if anyone has a need for it. --- cctech-bounces at classiccmp.org <ploopster at gmail.com> wrote: > Zane H. Healy wrote: > > At 5:49 AM -0800 12/5/05, Cameron Kaiser wrote: > > > >> > TCP/IP would be easier if the broadband adapter didn't command > >> $150-$200 on > >> > >>> epay. > >> > >> > >> I got mine for $80 and considered that a bargain. It was, of course, > >> almost > >> as much as the stupid DC cost new. > >> > >> It's still probably tied for "favourite console" with my Intellivision. > > > > > > The Dreamcast *IS* my favorite console, what other console has had such > > a high percentage of good arcade ports? I really wish they'd kept it > > alive, instead of killing it off early in the game. > > I liked gaming on the Dreamcast, but I *really* like NetBSD + X11 on the > Dreamcast. > > Peace... Sridhar __________________________________________ Yahoo! DSL ? Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com

20 years, 9 months

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"Market" for old macs?

by compoobah＠valleyimplants.com

The 800k format is very proprietary, I'd be surprised if there was any way that stock IBM hardware could write it, no matter what the programming tricks were. More data was packed on the outer tracks than the inner tracks (done so that they didn't have to change the Lisa ROMs (expecting 400k single-sided) according to rumor). The 1.44s can be done on any machine that has DD or RAWRITE or anything similar, provided that it also has a 1.44 MB mechanism. All '030+ macs have SuperDrives, as do SE-FDHD, LC, and "upgraded" IIs with the IIx ROMs (fair number of upgrades were sold by Apple). For an OS, I'd use either 6.0.8 (very fast, can turn MultiFinder off, "classic" look but won't do Virtual Memory or 32-bit addressing (max memory=8MB, everything else is ignored)) or 7.1 PRO (fastish, and you can patch in much of the stuff that's nice in 7.5/7.6). If you're running 7, be sure to get Mode32, available free+legal. ROMs from the pre-IIci era aren't fully 32-bit, so they have problems if you turn on 32-bit addressing. A/UX also runs on the SE/30, it's the only compact Mac that can run it. For these old beasts, assuming that you aren't going to be a heavy Photoshop/PageMaker user, 16-20 MB of RAM works just fine with 7.1. System 6 won't see anything over 8. Remember to get your long-blade Torx-15 and case cracker, and to unplug SCSI, power, etc. before trying to slide out the logic board. Scott Quinn (SE(6.0.8), II (6.0.8), IIci (7.1), Quadra 950 (pegasys, A/UX 3.1), Quadra 700 (7.6)). P.S. The LC is weird because of several things: 020 but no PMMU option, 16-bit data bus, only will run up to 10MB RAM and 1/3 ht HDD, funky nonstandard video that doesn't run on all monitors. The only excuse I can think of for Apple was that they didn't want to eclipse the II in power. The 24-bit addressing bug in ROM I can find no excuse for- the 68000 was designed with a 32-bit outside address bus successor in mind (full internal 32-bit registers)- they must have just been lazy.

20 years, 9 months

20
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Wanted: IBM PS/2 system 60 floppy drive.

by tosteve＠yahoo.com

Hello, I've been given an IBM system 60 (model 8560) computer tower, but it won't boot from HD or FD. Actually, it has a "601" error when booting - bad floppy drive. Additionally, the floppy does not spin, although the light does come on. If I had a working floppy, I could boot the Set-up diskette and hopefully configure it to boot off the HD? The floppy drive and interface is non-standard, so I cannot just install a modern-day floppy drive. If anyone has a working floppy drive they'd be willing to donate, I'd be a happy camper. Thanks! Steve __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs

20 years, 9 months

3
3
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Square D Programmer

by bob099＠centurytel.net

Anyone know where I can find more information on this? More Info Suitcase size portable with dedicated firmware to program PLC's from Square D Green screen display, fair keyboard, 6809 CPU , tape drive(no tapes), motherboard with four cards, 86(?) contact double-sided bus.(EXORbus?), 16 6116 chips on a memory card also daughter card with some other chips unreadable, another memory card with 8 6116 chips and 4 eproms labeled crt u-2x(3-6), CPU card with HD6809P, two 6850PDS, one 6840PDS, four EPROMs labeled CRT IC-xx(28-31), video card with 6845, 6821, 4 eproms labeled crt u-xx(27-30), one eprom labeled 30606-205-50 and the system crystal 12.000 MHZ and many glue chips on every board.

20 years, 9 months

1
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HP Plotter

by brushman＠esper.com

Thanks Tony for the reply. I'm using a 350mhz PC, Win98, Corel Draw V8. I draw vector images, and always plot from print preview. I don't type any coordinates in, just send the image. I was doing more snooping around the HP manuals, and between them, found this: HP-GL/2 units of measure The plotter can use plotter units or user units "Under default conditions, the unit uses plotter-units" 1 plotter-unit=0.025mm(0.00098inch) 40 plotter-units=1mm 1016 plotter-units=1 inch 3.39 plotter-units=1 dot at 300 DPI Here is a chart that was with the PS info I posted before: parameter_______format______range________________________default length integer 0 to 8388607 plotter-units depends on media size width integer 0 to 8388607 plotter-units depends on media size. These manuals were scanned and saved in Acrobat reader. Print quality seems good but maybe there's a decimal I'm not seeing??? 1016 into 8388607 is 8256.50... 12 into 8256.5 is 688. 688 feet? I'm missing something here. It did say plotter-units, not user units. Oh well thanks again.

20 years, 9 months

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New Amiga toy

by witchy＠binarydinosaurs.co.uk

Over at BinaryDinosaurs Towers I was 'slightly' pleased to get sent an Amiga 4000/040 that's been tricked out with a CyberStorm 3 68060/FastSCSI II CPU card and CyberVision 64/3D graphics complete with CD and drives. It's yellowed a lot so I'll be digging through the recent archives on 'curing yellowed plastic' that I foolishly ignored but the main question is on disk cloning. It's boot drive is a 2.5gb Fuji that needs percussive maintenance to get it to run so I'm in a need of cloning it ASAP. I've got a known good 2.1gb Quantum Fireball that I want to transfer the boot disk contents to, so far my experiments with linux (aside from dd) haven't worked since the drives are different sizes. Any CBM experts got any pointers for me? The current boot drive has lots of things on I want to keep though upgrading the OS to 3.5 would be nice since it has more internet flavoured tools. This brings me to another question - where can I get an ethernet board for this beastie? TIA :) -- adrian/witchy Binary Dinosaurs creator/curator www.binarydinosaurs.co.uk - the UKs biggest home computer collection?

20 years, 9 months

7
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Old MS-DOS & WIN Software

by dwight.elvey＠amd.com

>From: "Chuck Guzis" <cclist at sydex.com> > >On 12/2/2005 at 2:42 PM woodelf wrote: > >>Well it is not standard with the windows I have. > >Was it ever standard with Windows or DOS? If memory serves, it was always >an add-on package. IIRC, MASM 1.0 was abouit $100, which didn't make it >much of a bargain. > >LIB and LINK were packaged with DOS, but not MASM. ASM was standard with >CP/M, but it was kind of brain-dead (no macro facility, linking or >relocation). Most folks who wanted to program assembler seriously on 8 bit >stuff picked up either M80/L80 or RMAC. > >Didn't the Polymorphic or Processor Tech systems box ship with a resident >editor (BASC-style with line numbers) and a simple assembler? I seem to >remember hacking the I/O in it to work with my MITS box. Even added a few >of my own commands. > >Cheers, >Chuck Hi Polymorphic had a combined editor/assembler with its cassette based assembler. The disk based assembler is more normal text based( as I recall ). Dwight

20 years, 9 months

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Mainframe Parts available: IBM EnterpriseSystem 9000 Model 9221 Mainframe

by ceby2＠csc.com

Sridhar - > You didn't mention where you are. Shipping some of this stuff > could get expensive. > > Peace... Sridhar Fair point. The 9221 and I are in Hampshire, England. For the US, that's still useful for individual cards, though admittedly not of course for anything bulky. I'm flying back to the States for the holidays, anyway. Posting domestically would be possible if there's an interest. Just don't ask me to put a rackmount DASD in my carryon. Thanks, Colin Eby -- ceby2 at csc.com ---------------------------------------------------------------------------------------- This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind CSC to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. ----------------------------------------------------------------------------------------

20 years, 9 months

1
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6502 OSes? (was OS/9 and software for the 6809)

by dwight.elvey＠amd.com

>From: "Hans Franke" <Hans.Franke at siemens.com> > >Am 4 Dec 2005 0:24 meinte Philip Pemberton: > >> In message <001801c5f835$21bac2d0$0401010a at jfcl.com> >> "Robert Armstrong" <bob at jfcl.com> wrote: >> > I know there was at one time an OS/9 for the 6809 - does anybody know the >> > status of that today? Is there other software for the 6809 floating around >> > these days? > >> What I would REALLY like is something similar to OS/9, but for the 6502. > >Maybe try that one: >http://www.6502.org/users/andre/osa/ Hi A fellow named Dallas has a reasonably good DOS that could be adapted to most any other disk configuration. When I get time to fiddle with things, I hope to get the original OS running that came with the FDC-1 used on the SYM-1. My FDC-1 was missing a number of parts. It was only recently that I've been able to collect what I needed. Now, all I need is a little time to bring it together. This DOS is a difficult one to use but the one that Dallas has is a more complete DOS. I beleive it was written by a fellow in Japan. Later Dwight

20 years, 9 months

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Mainframe Parts available: IBM EnterpriseSystem 9000 Model 9221 Mainframe

by ceby2＠csc.com

Folk, I did an eBay run this weekend to pick up my first actual mainframe -- a 1992 IBM Model 9221. There's more of it than I really need for my own fooling around and I wondered if anyone on the list was interested in bits. Basically I have three I/O card cages and only really need one. And of course a bunch of excess cards -- mostly feature 6310, 6031 and 6130. I would consider swaps or pretty short money as I'm more concerned about not buckling the ceiling of the flat down stairs than the money. Swap-wise I'd consider main memory, missing cabling, media and that sort of thing. There are also a number of manuals I can part with as well. I might also be willing to part with some of the DASD. I'm not finished inventorying, so if there's something you'd like me to check for, please let me know. Colin Eby ---------------------------------------------------------------------------------------- This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind CSC to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. ----------------------------------------------------------------------------------------

20 years, 9 months

2
1
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DEC 3000-300x firmware upgrade

by mokuba＠gmail.com

I have the DEC 3000 booting off the firmware upgrade bootp image, right? When I enter "update" in the utility, it goes UPD-> update Read IO ROM Device ID ?05 HLT INSTR PC= 00000000.00000044 PSL= 00000000.00001F00 >>> (dumps me back to SRM console) What gives? Are my jumpers in the wrong position for updating?

20 years, 9 months

3
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HP 150 Touchscreen

by mwelch＠redwoodalliance.org

Hello Friends: Just cleaning out storage and decided to sell my one-owner HP150B. But first I need to make it work. It was working when I put it back in its boxes 20 +/- years ago. But, I can't get past the pre-boot error message, "Power-on test failed 0004" or sometimes "0000c". Anybody know these error messages? Or better yet, where I can get a list of power-on error messages?

20 years, 9 months

3
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DEC M7506 switch settings

by pat＠computer-refuge.org

Does anyone happen to have a listing of what the switch/jumper settings for a DEC M7506-BC (aka MSV11-MB) are? I've got one that I'd like to check is set correctly before I try to use it... Thanks, Pat -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

20 years, 9 months

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HP Portable Vectra CS Model 20

by Jeff1989＠aol.com

Mr. Feldman, I realize that your email below was four years ago. However, it just appeared in a search for this computer model which I collect Thank you. Jeff Marshall (_jeff1989 at aol.com_ (mailto:jeff1989 at aol.com) ) ------------------------------------- HP Portable Vectra CS Model 20 Feldman, Robert _Robert_Feldman at jdedwards.com _ (mailto:cctalk at classiccmp.org?Subject=HP%20Portable%20Vectra%20CS%20Model%2020&In-Reply-To=) Fri Jun 29 08:56:52 CDT 2001 * Previous message: _data migration _ (http://www.classiccmp.org/pipermail/cctalk/2001-June/174604.html) * Next message: _Old stuff found + help identifying... _ (http://www.classiccmp.org/pipermail/cctalk/2001-June/174545.html) * Messages sorted by: _[ date ]_ (http://www.classiccmp.org/pipermail/cctalk/2001-June/date.html#174542) _[ thread ]_ (http://www.classiccmp.org/pipermail/cctalk/2001-June/thread.html#174542) _[ subject ]_ (http://www.classiccmp.org/pipermail/cctalk/2001-June/subject.html#174542) _[ author ]_ (http://www.classiccmp.org/pipermail/cctalk/2001-June/author.html#174542) ____________________________________ I recently found an HP Portable Vectra CS Model 20 on top of a garbage container in the alley. I'm offering it to anyone who will pay for shipping (weighs about 15-20 pounds) or who can pick it up in Chicago. It lacks the battery pack, which apparently is where the external power (also missing) plugs in, so I do not know if it works. Otherwise, it appears to be in good condition. It has one 3.5" floppy and a hard drive of unknown size. Reply to _Robert_Feldman at jdedwards.com._ (http://dewey.classiccmp.org/mailman/listinfo/cctalk) Bob Feldman

20 years, 9 months

1
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Original Dr. Dobbs Issues

by paulrsm＠buckeye-express.com

> Are there any online archive(s) of the > original Dr. Dobbs journals? The first twelve years of DDJ (1976-1987) were reprinted in bound volumes. From 1988 on, DDJ has published back issues on CD-ROM. Unless someone has scanned and maybe OCR'd some articles, as I have with some 6502 and Apple II items, then no. I do have a spare volume 1 if you need it. If I can get volumes 9-12 then I can get rid of the individual issues >from 1984-1987. My Simtel CD-ROM has DDJ source code >from 1986 through early 1994. -- Paul R. Santa-Maria Monroe, Michigan USA

20 years, 9 months

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Looking for an old PowerPC mac laptop?

by silvercreekvalley＠yahoo.com

Looking for an old PowerPC based Mac laptop, anything really with a colour screen - eg around the 100MHz mark. Wanted for a conversion project. Based in the Bay Area. Thanks Ian. __________________________________________ Yahoo! DSL ? Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com

20 years, 9 months

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HP Srm

by jimgeneva＠earthlink.net

Hello All: Can anyone off help on A HP 9000 50960A SRM System? Jim

20 years, 9 months

3
3
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HP plotter

by brushman＠esper.com

I have an old HP 7596A that I still use for my work. There are a few things that I'm curious as to whether they can be changed, but I'll ask one question at a time. The plot limit on this model (E size?) is 36 inches wide x 48 inches long. I'm interested in doing a longer plot, say 5 or 6 feet. I have some manuals I bought on a CD, I've been snooping around on them. The hard clip is the physical limits of the plotter, the soft clip is the software limits of the plot. In the pocket guide, there is a place where it says: PS, page size Use: Changes the size of the hard clip limits Syntax: PS length(,width); or PS; Could I hire a computer expert to change the length setting? Or even do it myself? Maybe a long shot, considering computers are not the subject I've spent much of the last 20 years studying. Any technical answers should be s-l-o-w-e-d down from your usual warp speed to biplane or maybe hang glider :) Thanks for any help.

20 years, 9 months

2
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PC floppy doing Mac 800K; Was: "Market" for old macs?

by trag＠io.com

>Date: Tue, 29 Nov 2005 22:15:25 -0800 (PST) >From: Fred Cisin <cisin at xenosoft.com> >Subject: RE: "Market" for old macs? >> >I'd LOVE to hear from anybody who is successfully formatting and writing >> >GCR with a PC (without adding in a "flux transition" based additional disk >> >controller (such as Catweasel or COPYII Option Board) >> >It is "impossible". (VERY difficult) > >On Tue, 29 Nov 2005, Chuck Guzis wrote: >> The bigger problem isn't that it's GCR, but rather that it's also variable >> rate GCR. I'd remove the quotes from "impossible" on this one, although, >> maybe with a razor blade and a magnet and a VERY steady hand... > >How fast can you turn the MOTOR ON line on and off? :-) The Outbound Laptop Model 125 (ca. 1989 Mac laptop clone) uses a Citizen brand PC type laptop floppy drive. It reads and writes 800K Mac floppies as well as 1.4 MB floppies on both platforms. However, it has a controller card on the end of the floppy drive. The main components of the floppy controller card are an 85C30, WD37C65, WD92C32 (confused as to why this is there, since the 37C65 has a data separater built in), an LS624 voltage controlled oscillator, a Xicor X9103 digital potentiometer, a 27C256, and a GAL16V8. There's a little bit of other standard 74 series logic on board as well. My main obstacles to cloning the thing is an affordable source of the WD92C32 and the time and method to extract the logic of the GAL. I find it interesting that back in 1989 someone had already found a way to make a PC floppy work as a Mac floppy, though with a double handful of chips. I'm not quite sure what kind of interface the Outbound uses to the floppy drive, though. Obviously, there's no SWIM chip in the Outbound. So did the original designer (Doug Swartz?) cobble up a SWIM from 74 series logic or does the controller on the floppy negate the need for the SWIM? The thing that particularly arouses my curiosity is that the Laptop 125 has no SCSI port, nor external floppy port. But it has a Hirose brand DX10-28 connector (looks a lot like a mini-centronics). That connector can interface to an external floppy or external SCSI controller. The interface point for the external floppy is the 85C30. The interface point for the SCSI controller is a 53C80. So I wonder what the Outbound is using for signals on that 28 pin connector that will work for both of those interfaces and make some kind of sense to the Mac guts at the other end. Jeff Walther

20 years, 9 months

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"Market" for old macs?

by James＠jdfogg.com

> James Fogg wrote: > > My interests stop at the "classic" Macs, of which the SE30 is the > > height of engineering achievement (in my opinion). > > Why? I know a bit of the classic Mac engineering history > thanks to Andy's retro website/book, but I know nothing of the SE30. OK, neither do I (it's too late to argue). It is the last of the classic Macs and has the greatest number of features and capabilities.

20 years, 9 months

10
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More parts I need to replace on the VT100

by fireflyst＠earthlink.net

Okay, I pulled the power supply on the VT100 after replacing the two video board components, only to find 3 resistors on the PSU burned out. I know I should probably get a book on how to read a schematic (I will soon) but in the meantime can someone tell me what these resistors are? http://home.earthlink.net/~fireflyst/images/burnedpsu.gif I copied a portion of the diagram image on page 23 of the VT100 found at: http://vt100.net/mirror/antonio/mp00633.pdf If someone could tell me what resistor is what, that would be awesome. Thanks again for everyone's help (and time) Julian

20 years, 9 months

7
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EPROM Substitution

by henk.gooijen＠oce.com

Ah yes, now I remember ... indeed it was even 3 power supply voltages, like the old 4116 DRAMs. Thanks Tony, a few failing memory bits are corrected :-) - Henk, PA8PDP. ________________________________ Van: cctalk-bounces at classiccmp.org namens Tony Duell Verzonden: za 03-12-2005 22:46 Aan: cctalk at classiccmp.org Onderwerp: Re: EPROM Substitution > > I vaguely remember that all 2532 and 2732 EPROMs were compatible *except* t= > he TI one. > (or was it an other manufacturer?) > >From that one manufacturer the 2532 used a *second* power supply ... was it= > -5V? You're thinking of the 2K byte (16K bit) EPROMs. Everybody but TI made a 2716 that was single-rail (+5V supply only). TI's 2716 was a 3-rail part (+5V, +12V, -5V), the TI 2516 was single-rail part and much the same as everyone else's 2716. -tony This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 9 months

1
0
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Mac Mini

by technobug＠comcast.net

On Sun, 4 Dec 2005 00:52:27 +0000, Dan Williams <williams.dan at gmail.com> wrote: > I have a mobile that has a USB charger, but it will not charge unless > the driver is installed. I don't know if the specs of USB mean it > doesn't put voltage on a line unless it's told to. A USB device is initially required to pull no more than one load (100 ma) from the power bus. On initialization, the USB host queries the device to obtain the number of loads it requires (up to 5 - 500 ma) and determines whether it can provide that amount of power to the device. For devices requiring more than one load, the device is not allowed to pull more than the initial load until configured by software. > I keep meaning to > try it on a powered hub. But I don't have one. From the spec: "Hubs that obtain operating power externally (from the USB) must supply five unit loads to each port. Battery powered hubs may supply either one or five unit loads per port." So this should work independent of host initialization (if the hub follows the rules). If the device is a standard device as defined by the specs, the host should initialize power independent of a driver. However, if you are on a M$ box, they don't always follow the rules even though they are a signatory on the spec... CRC

20 years, 9 months

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need drivers for old graphics card

by chrism3667＠yahoo.com

made by Vermont Microsystems. Takes up 2 card slots, like an IBM PGA card. Has on onboard 80188. Is VM still around? __________________________________ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com

20 years, 9 months

2
1
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Old MS-DOS & WIN Software

by micheladam＠theedge.ca

Hi. Would you happen to have Turbopower Software stuff? Like ObjectProfesionnal? Also, Microsoft TCP/IP SDK for DOS ? Borland ObjectVision 2.1 ? Faircom CTREE ? Thanks Michel Adam ----- Original Message ----- From: M H Stein <dm561 at torfree.net> Date: Friday, December 2, 2005 2:07 am Subject: Old MS-DOS & WIN Software > I'm getting rid of several large boxes of old MS-DOS & WIN > software, OSs, apps, languages, utilities, games, etc. > > Also boxes of hardware such as PC MoBos, cards, keyboards, > external print buffers, converters, <=9600bd modems etc. > > I realize without a detailed list this is rather vague, but I'd > like > to know if there's any interest in this sort of stuff to make it > worth while actually making that list. > > If not here, maybe someone knows of another list where someone > may be interested? > > TIA, > > mike > >

20 years, 9 months

4
4
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Old MS-DOS & WIN Software

by micheladam＠theedge.ca

Mike, further to this, my ISP is black listed on spamcop, so please respond to michel at ssimicro dot com Thanks Michel ----- Original Message ----- From: micheladam at theedge.ca Date: Saturday, December 3, 2005 7:44 pm Subject: Re: Old MS-DOS & WIN Software > Will go for the Objectvision. CC'd to the list as your email address > is/was unreacheable from my ISP's server. > > Thanks > > Please send me reply directly to micheladam at theedge dot ca > > ----- Original Message ----- > From: M H Stein <dm561 at torfree.net> > Date: Saturday, December 3, 2005 3:05 am > Subject: Old MS-DOS & WIN Software > > > I just happen to have a sealed NIB ObjectVision 2.1 on a shelf > > beside me, > > although it may be spoken for (and you might have trouble > getting > > the $10 > > rebate :); as to the rest, no idea at this time but not likely. > > > > It'll take me a while to dig through this stuff, so please send > me > > a note off- > > list and I'll let you know when I have a list of what there is, > > condition, and > > what it's worth, if anything. > > > > TIA, > > > > mike (in Toronto) > > > > ------------------Original Message-------------- > > > > Date: Fri, 02 Dec 2005 19:09:16 -0700 > > From: micheladam at theedge.ca > > Subject: Re: Old MS-DOS & WIN Software > > > > Hi. > > > > Would you happen to have Turbopower Software stuff? Like > > ObjectProfesionnal? > > Also, Microsoft TCP/IP SDK for DOS ? > > > > Borland ObjectVision 2.1 ? > > > > Faircom CTREE ? > > > > Thanks > > > > Michel Adam > > > > > > ----- Original Message ----- > > From: M H Stein <dm561 at torfree.net> > > Date: Friday, December 2, 2005 2:07 am > > Subject: Old MS-DOS & WIN Software > > > > > I'm getting rid of several large boxes of old MS-DOS & WIN > > > software, OSs, apps, languages, utilities, games, etc. > > > > > > Also boxes of hardware such as PC MoBos, cards, keyboards, > > > external print buffers, converters, <=9600bd modems etc. > > <snippage> > > > > > >

20 years, 9 months

1
0
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Old MS-DOS & WIN Software

by micheladam＠theedge.ca

Thirded! Michel ----- Original Message ----- From: Jim Leonard <trixter at oldskool.org> Date: Saturday, December 3, 2005 1:01 pm Subject: Re: Old MS-DOS & WIN Software > Gene Buckle wrote: > > > >> Seconded, I have been looking for Object Professional for a decade! > > > > Which version? > > Preferably the most recent one :-) but I'll take anything. I've > wanted to go > through Kim's code for a while to see how he solved certain > problems. Object > Professional is the only thing that is NOT available for download > on the > sourceforge site; no idea why... > -- > Jim Leonard (trixter at oldskool.org) > http://www.oldskool.org/Want to help an ambitious games project? > http://www.mobygames.com/ > Or check out some trippy MindCandy at > http://www.mindcandydvd.com/

20 years, 9 months

1
0
0 0

Old MS-DOS & WIN Software

by micheladam＠theedge.ca

Will go for the Objectvision. CC'd to the list as your email address is/was unreacheable from my ISP's server. Thanks Please send me reply directly to micheladam at theedge dot ca ----- Original Message ----- From: M H Stein <dm561 at torfree.net> Date: Saturday, December 3, 2005 3:05 am Subject: Old MS-DOS & WIN Software > I just happen to have a sealed NIB ObjectVision 2.1 on a shelf > beside me, > although it may be spoken for (and you might have trouble getting > the $10 > rebate :); as to the rest, no idea at this time but not likely. > > It'll take me a while to dig through this stuff, so please send me > a note off- > list and I'll let you know when I have a list of what there is, > condition, and > what it's worth, if anything. > > TIA, > > mike (in Toronto) > > ------------------Original Message-------------- > > Date: Fri, 02 Dec 2005 19:09:16 -0700 > From: micheladam at theedge.ca > Subject: Re: Old MS-DOS & WIN Software > > Hi. > > Would you happen to have Turbopower Software stuff? Like > ObjectProfesionnal? > Also, Microsoft TCP/IP SDK for DOS ? > > Borland ObjectVision 2.1 ? > > Faircom CTREE ? > > Thanks > > Michel Adam > > > ----- Original Message ----- > From: M H Stein <dm561 at torfree.net> > Date: Friday, December 2, 2005 2:07 am > Subject: Old MS-DOS & WIN Software > > > I'm getting rid of several large boxes of old MS-DOS & WIN > > software, OSs, apps, languages, utilities, games, etc. > > > > Also boxes of hardware such as PC MoBos, cards, keyboards, > > external print buffers, converters, <=9600bd modems etc. > <snippage> > >

20 years, 9 months

1
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OS/9 and software for the 6809 (was RE: trying to design

by compoobah＠valleyimplants.com

>Does that mean we're likely to see a cool 6809 board from Spare Time >Gizmos sometime soon? Put me on the list for one! > > Maybe, but it sounds like Scott is going to do one too. I don't want to >steal his idea. If you want to, go ahead- mine's going to be something of a junkbox special (if it ever actually materializes in working condition- I've had exactly 1 ElecEng. course.) The Spare Time stuff, on the otherhand, is more than a bit nicer . . .

20 years, 9 months

1
0
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Mac Mini

by compoobah＠valleyimplants.com

For a SE to run SuperDrives, you need the FDHD ROM upgrade (similarly, for a II you need the Mac II SuperDrive upgrade, which is a set of IIx ROMs). SEs make a nice bridge system, though, set them up with an 800k drive, network, and a version of System 6 and they are good for writing out 400k floppies. System 7 had issues with MFS (400k floppy filesystem).

20 years, 9 months

1
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CUBIX 6809 software - was: first system/6809/OS9

by dave04a＠dunfield.com

I know Allison has mentioned this, but I'd like to provide a bit more detail: In the mid 80's I designed a little 6809 based computer system, including the hardware and all software. The operating system is called CUBIX, and may be of interest to anyone who wants to build up small homebrew computer. Here is some information to consider: - The system is designed to give high functionality with minimal hardware - you can build a completely operational CUBIX system with a fairly small handful of parts. (I have built working CUBIX systems in a single afternoon). - CUBIX is designed to be very portable - it can handle pretty much any I/O devices and disk geometry, and you can even change to new devices or redefine the disk geometry "on the fly". The system is so portable, that many system ports can be done from nothing more than the ROM image (I provide a detailed porting document). - CUBIX itself occupies the better part of an 8K ROM, and provides a nice file system, a command line "shell" (including a good selection of build in commands and "script/batch" files), and over 100 system calls/services. - There are a couple dozen applications and utilities, which include - All the standard file and system maintenance utilities - Several editors, including a fairly decent one which operates line- by line or full-screen visual. (The system includes a TTY specification subsystem which allows you to taylor the screen oriented programs to pretty much any terminal.) - HELP : A vax/vms like help command, which provides interactive documentation to all commands, applications and utlities. - ASM : 6809 assembler, and RAID : a fairly powerful 6809 debugger. - BASIC - FORTH : A very fast FORTH which compiles to directly executable 6809 machine code instead of threaded lists. - MAPL : A little APL system. - SIM80 : An 8080 simulator - allowed me to run most of the code I had written for my Altair on CUBIX (I included on the disk as examples, an 8080 BASIC interpreter, and an 8080 CHESS program) - Lots more... - The system is quite mature/stable - I used it as my main computer for several years, and there has been a small base of other users. (At one time I sold the software as a commercial product). - The system is very well documented. The main documents are: - CUBIX system users guide - CUBIX system programming manual - CUBIX porting guide - Separate documents for all of the major applications. - The distribution "documents" diskette, as a 360k 5.25" disk which contains nothing but documentation, and it is completely full - not a single free sector. - All source code, documentation and bnaries are now freely available. - I have provided schematics for a simple CUBIX system using a serial console, and matching sample drivers. - I have done a PC based simulator for my original D6809 portable computer, which allows you to try the system out by running it (full functionality) on your PC. I also have a command to import/export individual files to/from the simuilator disk images, and you can use my ImageDisk program to transfer disk images back and forth between the simulator image files and physical CUBIX compatible diskettes. - Since I've recently gotten "going" on this system again, I am thinking about writing a CUBIX compatible library for my 6809 C compiler and port it over to CUBIX so that the system will have a resident 'C' development system. If there is interest, I would definately do this. Although it would be considered a "toy system" by modern 32/64 bit standards, a CUBIX system gives you a pretty powerful computer with minimal hardware, and can be a very rewarding small project (as a number of people have told me over the years). It also gives you a very unique system that you won't experience anywhere else. One thing that I have put together for Allison who is building up one of these systems is my "Ultimate 6809 ROM" - I would be happy to make the content available to anyone else who wants to build a system. This is a 27C256 (32K) rom which maps into the 8K CUBIX system address space using two switches to set the 8K bank which will "come up" when the system is reset: Bank 0 contains the CUBIX OS - this would be selected for the normal operatinal mode of the system. Bank 1 contains HDM09 - my Hardware Debug Monitor - this is a very simple monitor which does not require ANY RAM to operate - You can use it to "poke around" the system if only the ROM and console UART are operating (and you can use it's polling accesses to debug the console, so all you really need is the ROM). Since there is lots of extra space in this bank, I have also provided stand-alone/ROM versions of BASIC and FORTH which can be launched from the monitor - these are very handy if you need to write a little program to test your hardware (But they DO require operational RAM :-) Bank 2 contains MON09 - this is my full-featured 6809 debugger, which has full dump/edit memory/registers, disassembly, breakpoints, single-step, NMI "break" of executing programs, and lots of other goodies. It can also download Intel or Motorola format download files so that you can load executable images into the system from a serial device and run them. For the "Ultimate ROM", I have expanded MON09 to include the engine from my SIM80 8080 simulator - this version of the monitor has additional commands to dump/edit the 8080 registers, and to execute/step 8080 code (all the other commands are common) - For those of you who are more familier with 8080/Z80, this lets you test out the system using 8080 binaries - even though it's a 6809 processor! Bank 3 contains a stand-alone/ROM version of the Micro-APL system (I had to put SOMETHING in the last bank!) - Thsi can be handy if you want to write fairly complex test prgorams. I invite/encourage anyone who wants to experiencing building a small/useful computer "from the ground up" to check out the CUBIX system - Most of the material mentioned above can be found on my web site (See URL in sig) - go the the "Dunfield 6809" computer under "Homebuilts". Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

20 years, 9 months

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FW: OS/9 and software for the 6809 (was RE: trying to design myfirst micro- looking for "prior art")

by lbickley＠bickleywest.com

On Saturday 03 December 2005 13:06, Robert Armstrong wrote: > Thanks, Lyle. Just for my own personal interest I'd love to know. > > But if it's going to become a larger project, then a lot will depend on > the current copyright status of OS/9. Do you know anything about the > current owners? IIRC, OS-9 was developed by Microware and Microware is now owned by RadiSys: http://www.radisys.com/oem_products/microware_OS-9.cfm I'm not sure how they would "view" their old versions for the 680x chips - which appear to be no longer supported... BTW: Note that it's "OS-9" and NOT "OS/9" - I had forgotton that little tidbit. Cheers, Lyle > > -----Original Message----- > From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] > On Behalf Of Lyle Bickley > Sent: Saturday, December 03, 2005 12:34 PM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: OS/9 and software for the 6809 (was RE: trying to design > myfirst micro- looking for "prior art") > > > Bob, > > On Saturday 03 December 2005 10:12, Robert Armstrong wrote: > --snip-- > > > I know there was at one time an OS/9 for the 6809 - does anybody > > know the status of that today? Is there other software for the 6809 > > floating around these days? > > Some years ago, I gave a buddy of mine in the east coast two 6809 systems > running OS/9. I gave him complete sets of the OS/9 operating system, > associated software, manuals, spare parts, etc. > > I've sent him an email - and will let you know if he still has it and if I > can > get copies of the software/manuals made. > > Cheers, > Lyle -- Lyle Bickley Bickley Consulting West Inc. Mountain View, CA http://bickleywest.com "Black holes are where God is dividing by zero"

20 years, 9 months

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trying to design my first micro- looking for "prior art" (6100 and6809)

by bobwyates＠earthlink.net

Might be some ideals here. Excuse me if this has already been mentioned, not following the list too closely. http://homepage.mac.com/dgcx/pdp8x/

20 years, 9 months

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OS/9 and software for the 6809 (was RE: trying to designmyfirstmicro- looking for "prior art")

by ajp166＠bellatlantic.net

> >Subject: RE: OS/9 and software for the 6809 (was RE: trying to designmyfirstmicro- looking for "prior art") > From: "Robert Armstrong" <bob at jfcl.com> > Date: Sat, 03 Dec 2005 13:05:42 -0800 > To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> > > > Actually, I'd rather do a Z80-CP/M machine, but the same problem applies >(need a software person to port CP/M). > >Bob That I can do in my sleep. The only caveat would be if it had a device not laying around as yet.. Always an excuse to play with new devices. I've done it enough times and re did some ports as well. The real question I would ask is CP/M2 or one of the later ones off the P2DOS tree (z80 compatable cp/m clones) that offer larger disks (greater than 8mb logical drives)? It's a BIOS, system specific docs and setting up a standard package task. Allison

20 years, 9 months

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EPROM Substitution

by henk.gooijen＠oce.com

I vaguely remember that all 2532 and 2732 EPROMs were compatible *except* the TI one. (or was it an other manufacturer?) >From that one manufacturer the 2532 used a *second* power supply ... was it -5V? Memory is dropping bits :-( Check the board before you install a 2732 ! It's of course OK to put in an other TI 2532 (same as the original one). - Henk, PA8PDP. ________________________________ Van: cctalk-bounces at classiccmp.org namens Bruce Lane Verzonden: za 03-12-2005 06:17 Aan: cctech at classiccmp.org Onderwerp: EPROM Substitution Fellow techies, I've got a nice item of Z80-based, 1986-vintage, telephone test gear that I'm trying to restore to working condition. The CPU board, as it currently stands, uses a pair of TI 2532 EPROM chips for program memory. I suspect both chips have become borderline in terms of their timing tolerances, so I need to replace these with the more readily available 2732, of which I have plenty. The pinout between the two chips is slightly different, thanks to the fact that the 2532 has only one enable line and the 2732 has two. I've come up with an idea for conversion, but I'd really like to get a sanity check on it, preferably from someone with an original TI data book that covers the 2532. Here's what I've got so far, based on comparing the pinouts of the two devices. (1) Move the trace originally connected to pin 18 (A11) on the 2532 up to pin 21, which appears to be A11 on the 2732. (2) Tie pin 18 to pin 20 so that, on the replacement 2732, both /CE and /OE are asserted simultaneously. Did I miss anything? Thanks much. -=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com kyrrin (at) bluefeathertech do/t c=o=m "If Salvador Dali had owned a computer, would it have been equipped with surreal ports?" This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 9 months

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More parts I need to replace on the VT100

by dwight.elvey＠amd.com

>From: ard at p850ug1.demon.co.uk ---snip--- > >However, they seem to be a lot less use when it's a one-off unit which >you need to repair no matter what (like a classic computer). You're going >to have to do real fault diagnosis sometimes anyway, it doesn't make it >much more difficult to do it properly every time. > Hi Once many years ago while working for Intel, I was called in to help fix a number of what we used to call yellow dot boards ( failed but not repaired after third rework and had a yellow dot placed on them ). The yellow dot inventory had a sudden jump so someone needed some additional help. The boards had a lot of analog circuits on them because they had a discrete component PLL used for the disk controller. I had the fellow from system test with me to take notes on how to diagnose complicated failures on these boards. As it turned out, about 90% were caused by a mix up in the parts loaded on the boards. A low voltage zener was placed in a number of locations that expected signal diodes. This especially effected the balanced mixer used in the phase detector. After some time of carefully showing the system test fellow a number of scope signals and carefully explaining the reasons I was looking at particular locations, I happened to glance at his notes. It went something like this: D3, D5, D8, D20, D21 There were no symptoms and nothing of what I showed him about scope information. I soon realized that he was just interested in a list of parts that I indicated as causing problems and wasn't even paying attention to anything else I was doing. The worst part was that since this was a one time parts mix up, it probably would never happen again so that his list was virtually worthless. I told him this but that didn't seem to ring a bell with him. Dwight

20 years, 9 months

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EPROM Substitution

by kyrrin＠bluefeathertech.com

Fellow techies, I've got a nice item of Z80-based, 1986-vintage, telephone test gear that I'm trying to restore to working condition. The CPU board, as it currently stands, uses a pair of TI 2532 EPROM chips for program memory. I suspect both chips have become borderline in terms of their timing tolerances, so I need to replace these with the more readily available 2732, of which I have plenty. The pinout between the two chips is slightly different, thanks to the fact that the 2532 has only one enable line and the 2732 has two. I've come up with an idea for conversion, but I'd really like to get a sanity check on it, preferably from someone with an original TI data book that covers the 2532. Here's what I've got so far, based on comparing the pinouts of the two devices. (1) Move the trace originally connected to pin 18 (A11) on the 2532 up to pin 21, which appears to be A11 on the 2732. (2) Tie pin 18 to pin 20 so that, on the replacement 2732, both /CE and /OE are asserted simultaneously. Did I miss anything? Thanks much. -=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com kyrrin (at) bluefeathertech do/t c=o=m "If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"

20 years, 9 months

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OS/9 and software for the 6809 (was RE: trying to design my firstmicro- looking for "prior art")

by ajp166＠bellatlantic.net

> >Subject: OS/9 and software for the 6809 (was RE: trying to design my firstmicro- looking for "prior art") > From: "Robert Armstrong" <bob at jfcl.com> > Date: Sat, 03 Dec 2005 10:12:31 -0800 > To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> > >>compoobah at valleyimplants.com wrote: > >> Sounds like I'm back with 6809 as being easier to work with. >> I'll sit down with what I've got here and see what I can come >> up with (I'm more interested in designing than just having a >> "soldering skills test"). > > I love fooling around with old microprocessors too, but one of my issues >is that I hate writing software for them. After I get all the hardware >built, I'm kind of stuck with the question "Now what???" Toggling in little >LED blinking programs and things like that gets old pretty fast. That's one >reason I picked the 6120 - OS/8 and related stuff is readily available on >the Internet - and the Elf - there's lots of original Elf software around, >plus Mike Riley did a great job writing a real disk OS for it. > > I know there was at one time an OS/9 for the 6809 - does anybody know the >status of that today? Is there other software for the 6809 floating around >these days? > > Of course, you may not share my hangups about writing software ... > >Bob look at http://www.parse.com/~ddunfield/museum/index.html Scan down to homebrew and 6809. Dave did both a simple 6809 and a full up OS and supporting tools including a simulator so you can drive it now. the think I liked most is the kernel is 8k and the sources are there as well as decent docs. OS9 seems to be tied to existing hardware like coco and I'm not sure sources are out there as free. Allison

20 years, 9 months

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Mac Mini

by zmerch＠30below.com

Rumor has it that Ethan Dicks may have mentioned these words: >On 12/3/05, Tony Duell <ard at p850ug1.demon.co.uk> wrote: > > [1] Does a USB-GPIB interface exist? I assume it must do, but I've not > > seen one (I've not seriously looked either, my GPIB stuff is generally > > controller by HP hosts [2]) > >I think I've seen one - not cheap, but neither are PCI GPIB cards - if >you need one, you *need* one and will pay. I've seen one in captivity! Saw one at a car dealership - they deal with both GM & Chrysler products, I *think* it was used on the Chrysler end o'things... Since then I found a website that had 'em for sale... I think around $220 to $250 USD each, but they had 'em. Google is your friend here... ;-) Laterz, Roger "Merch" Merchberger -- Roger "Merch" Merchberger -- SysAdmin, Iceberg Computers _??_ zmerch at 30below.com (?||?) If at first you don't succeed, nuclear warhead _)(_ disarmament should *not* be your first career choice.

20 years, 9 months

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SCSI Controller, 1530 Datassette, Ebay seller, etc

by mokuba＠gmail.com

Ebay user ID nnn0iab has interesting stuff going up - HVD scsi controller, and such, I just noticed him while browsing commodore stuff on ebay, figure if he's got this sort of thing going up there might be more. Do any of you people watch specific sellers like this just to see if something interesting comes up? OH! And he's the seller of a 'christmas card holder' you might be interested in... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5642635569 - I wonder if that christmas card holder will sell for anythign higher then a few dollars... <Watches everyone put a pentium 2 on ebay as a card holder and the value of pentium 2s plumet even more> Are there any other interesting sellers you could point out to me?

20 years, 9 months

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Old MS-DOS & WIN Software

by dm561＠torfree.net

I just happen to have a sealed NIB ObjectVision 2.1 on a shelf beside me, although it may be spoken for (and you might have trouble getting the $10 rebate :); as to the rest, no idea at this time but not likely. It'll take me a while to dig through this stuff, so please send me a note off- list and I'll let you know when I have a list of what there is, condition, and what it's worth, if anything. TIA, mike (in Toronto) ------------------Original Message-------------- Date: Fri, 02 Dec 2005 19:09:16 -0700 From: micheladam at theedge.ca Subject: Re: Old MS-DOS & WIN Software Hi. Would you happen to have Turbopower Software stuff? Like ObjectProfesionnal? Also, Microsoft TCP/IP SDK for DOS ? Borland ObjectVision 2.1 ? Faircom CTREE ? Thanks Michel Adam ----- Original Message ----- From: M H Stein <dm561 at torfree.net> Date: Friday, December 2, 2005 2:07 am Subject: Old MS-DOS & WIN Software > I'm getting rid of several large boxes of old MS-DOS & WIN > software, OSs, apps, languages, utilities, games, etc. > > Also boxes of hardware such as PC MoBos, cards, keyboards, > external print buffers, converters, <=9600bd modems etc. <snippage>

20 years, 9 months

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6502 nixie project

by ryan＠hack.net

This has been occupying my time lately: http://www.hack.net/nixie It's my homebrew 6502-powered Nixie clock. Designed it from scratch; thought the other "classic computer" people here might enjoy the write up. -Ryan Brooks ryan at hack.net

20 years, 9 months

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trying to design my first micro- looking for "prior art" (6100and6809)

by ajp166＠bellatlantic.net

> >Subject: RE: trying to design my first micro- looking for "prior art" (6100and6809) > From: "Robert Armstrong" <bob at jfcl.com> > Date: Fri, 02 Dec 2005 21:21:43 -0800 > To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> > > > And sadly, any practical 6100 design will never run OS/8 without a lot of >extra hardware to implement the EMA. > >Bob EMA (without some of the timeshare wizzies) is not bad really in TTL. You need two three bit and one 6 bit register and the mux logic. Around that goes the IOT decode. And you can cheat and only implement an 8I and trim the IF and DF register to one bit for only 8kw ram. Which really reduces the hardware. It's also possible to extend it as there was a 8A version that could address 64kW (4 bit IF and DF). A few gals would make short work of it all. Like I'd said about the Intersil Sampler board, 4kW is not enough sometimes. so I did do the 8I minimal EMA (8k). The IF and DF regiser is a single 74ls74 and the SF register is also a 74ls74 the rest is interrupt logic (1ff) and addressing mux the IOTs are per DEC save for the active bits. By reducing the number of bits the logic needed (raw chip count) goes way down. However the 6120 really does make it a lot easier and it's faster too. Allison

20 years, 9 months

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trying to design my first micro- looking for "prior art" (6100and6809)

by ajp166＠bellatlantic.net

> >Subject: Re: trying to design my first micro- looking for "prior art" (6100and6809) > From: woodelf <bfranchuk at jetnet.ab.ca> > Date: Fri, 02 Dec 2005 22:11:11 -0700 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >Allison wrote: > >>There are other CPUs like 8085, Z80 and relatives with sims around for them. >>Never minding 6800 and 6502s. So its a matter of taste. >> >> >> >The 6100 makes a nice basic PDP-8 but remember the 8 requires paper tape >for the basic system. And thats a problem because??? If your using a TTY then tape is already there. Building a reader is trivial, I've done it. If you arr the kind that cant well you still want the interface to match up as you use a PC as PT:. Most will opt for the latter as there are a lot of "tapes" on line. The biggest limitation with the 6100 is 4k of memory. I have an Intersil Sampler and it's fun to use but 4KW is a big problem. Then it's build an EMA (in ttl it's not bad) or find a 6101 MEDIC which has the EMA in it. >>In all cases having a sim for the target machine will make design work and >>software more real and less dreaming. >> >I find it the other way around, sims seem less real than hardware >sitting on board even the design >is never finished. A magnetic tape drive and old I/O does seem to feel >like a massive computer >even if todays equivelant fits on a stick of chewing gum. Yes, but if your developing software a sim allows you to do that while waiting for a part or whatever. I have the same general complaint as it's not real hardware and I cant test my construction. Often I can test the logic or develop test or driver programs. Allison

20 years, 9 months

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trying to design my first micro- looking for "prior art" (6100 and 6809)

by compoobah＠valleyimplants.com

I'm slowly starting to figure out what I want to do- the suggestions from the group seem to point towards 6809 or IMS6100 for the processor, so now I'm looking at representative designs to springboard from (first project). Found several online 6809 designs, but only one 6100 (at www.sparetimegizmos.com) Are there any good print resources on these? (other than the bitsavers/manx resources on PDP-8 and DECmates)? (I have datasheets)

20 years, 9 months

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trying to design my first micro- looking for "prior art" (6100 and6809)

by ajp166＠bellatlantic.net

> >Subject: trying to design my first micro- looking for "prior art" (6100 and6809) > From: compoobah at valleyimplants.com > Date: Fri, 02 Dec 2005 19:41:17 -0600 > To: <cctalk at classiccmp.org> > >I'm slowly starting to figure out what I want to do- the suggestions from the group seem to point towards 6809 or IMS6100 for the processor, so now I'm looking at representative designs to springboard from (first project). Found several online 6809 designs, but only one 6100 (at www.sparetimegizmos.com) Are there any good print resources on these? (other than the bitsavers/manx resources on PDP-8 and DECmates)? (I have datasheets)=0D=0A=0D=0A When you say print resources be more specific about what you looking for. I'm sure the info is available. Check out Dave Dunfields 6809 portable page at: www.parse.com/~ddunfield/museum A very buildable and straightforward design. With a simulator as well and software that is interesting. I'm doing a varient on this one as the CUBIX OS is refreshing and fairly well documented. The sim allowed me to play with 6809 and the OS on the PC. Now if you've been to Bob's page www.sparetimegizmos.com then also check out a PDP-8 sim (win-8). The STG design is a really nice one as it really does the console as DEC PDP-8 complient rather than decmateII/III flavor. Makes a difference when your running paper tape software. [yes i know you can patch it but.. why if you dont have to.] There is a third choice the 1802 aka COSMAC or more common as the ELF. There are sims for that too. There are other CPUs like 8085, Z80 and relatives with sims around for them. Never minding 6800 and 6502s. So its a matter of taste. In all cases having a sim for the target machine will make design work and software more real and less dreaming. Allison

20 years, 9 months

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Old MS-DOS & WIN Software

by chrism3667＠yahoo.com

where you at? --- cctech-bounces at classiccmp.org <bfranchuk at jetnet.ab.ca> wrote: > M H Stein wrote: > > >I'm getting rid of several large boxes of old MS-DOS & WIN > >software, OSs, apps, languages, utilities, games, etc. > > > >Also boxes of hardware such as PC MoBos, cards, keyboards, > >external print buffers, converters, <=9600bd modems etc. > > > >I realize without a detailed list this is rather vague, but I'd like > >to know if there's any interest in this sort of stuff to make it > >worth while actually making that list. > > > > > > > Do you have any PCB layout and schematic capture programs? > > >If not here, maybe someone knows of another list where someone > >may be interested? > > > >TIA, > > > >mike > > > > > > __________________________________________ Yahoo! DSL ? Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com

20 years, 9 months

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More parts I need to replace on the VT100

by dwight.elvey＠amd.com

Hi I would suggest that you get your self up on reading schematics. Resistors rarely just burn up without there being some other cause. Just replacing the resistors will most likely result in more burnt resistors if it is powered up without locating the reason for the resistors to burn in the first place. Many IC's and transistors show little to no visual indications that they are shorted inside. I don't know how one can find these without understanding where the resistors are in the schematic and how the resistors are being used. Dwight >From: "Julian Wolfe" <fireflyst at earthlink.net> > >Okay, I pulled the power supply on the VT100 after replacing the two video >board components, only to find 3 resistors on the PSU burned out. I know I >should probably get a book on how to read a schematic (I will soon) but in >the meantime can someone tell me what these resistors are? > > > >http://home.earthlink.net/~fireflyst/images/burnedpsu.gif > > > > > >I copied a portion of the diagram image on page 23 of the VT100 found at: > > > > http://vt100.net/mirror/antonio/mp00633.pdf > > > >If someone could tell me what resistor is what, that would be awesome. > > > >Thanks again for everyone's help (and time) > > > >Julian >

20 years, 9 months

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New Toy- 8088 SBC

by chenmel＠earthlink.net

I competed in the horserace called eBay last week and acquired what to me is a wonderful piece of hardware- A commercially produced 8088 single board computer that uses ALL TTL logic except for the 8088 processor itself. It has a compliment of 8 bit input and output ports made with 20-pin TTL chips, and the docs include full schematics. I can now adapt the design to other 8088 SBC computer ideas I have. It has a BASIC interpreter in ROM and the console is over a serial port. It apparently can burn EPROMs on-board and has about five open sockets for adding code. It's all on about a 5"x7" card and hails from the year 1992. It has, uh, all the power of a current-generation PIC from Microchip, but in a much neater package. It's a Vesta Technology, Inc. SBC88A.

20 years, 9 months

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More parts I need to replace on the VT100

by ajp166＠bellatlantic.net

> >Subject: Re: More parts I need to replace on the VT100 > From: Scott Stevens <chenmel at earthlink.net> > Date: Thu, 01 Dec 2005 21:41:54 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On Thu, 1 Dec 2005 22:53:21 +0000 (GMT) >ard at p850ug1.demon.co.uk (Tony Duell) wrote: > >> > >> > Thanks for all the advice, and no, I didn't find any offense whatsoever in >> > your post. I think you for the advice and I checked that book out from the >> >> You;'d be suprised. Some people take offence at being told what they >> consider to be obvious. >> >> > library here at work (I work at a community college) >> >> It''s not a cheap book, but I'd strongly advise buying your own copy. It >> is not a book you are going to grow out of quickly (if at all, I consider >> that I have a reasonable understnading of electronics, but I still often >> lookt in TAoE). It's one of those books that I think every hacker should >> own (along with the 'Minix book' we discussed last week, K&R, etc). >> > >I have the first edition (black slipcover) and bought it back when I was making a mere $4 an hour in the early 80's. And I have never regretted that purchase. It is the 'modern' edition of 'The Radiotron Designer's Handbook' which is a similar book from the vacuum tube era. Lots of substancial content. The Art of Electronics can be your ONLY electronics book and stand well in that role. > >It was written, incidentally, to BE the only needed electronics book, for technically minded people, scientists, etc. For the kind of scientist who rolls up his/her sleeves and builds his/her own test equipment for the lab. When It comes to books it's about thin only thing I spend too much on. My library includes books like the Radio Amatuers Handbook(arrl press) from for about every five years or when they made format changes about 1955 to current, OSDI Minix second edition hard cover, K&R the little white book and a Bell Tel "A" size copy from their think tank with margin notes, Of course the Grey, orange and Blue walls and a couple of feet of the DEC handbooks. Then I get into things like parts databooks going back to when dirt was being spec'd. Information and the books that contain them are the single most precious part of what I have because it spans all aspects of electronics. Now the 'The Radiotron Designer's Handbook' fits in that pile as just one more opinion along with my old college texts. Allison

20 years, 9 months

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1
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Old MS-DOS & WIN Software

by ajp166＠bellatlantic.net

> >Subject: Re: Old MS-DOS & WIN Software > From: "Chuck Guzis" <cclist at sydex.com> > Date: Fri, 02 Dec 2005 14:08:32 -0800 > To: cctalk at classiccmp.org > >On 12/2/2005 at 2:42 PM woodelf wrote: > >>Well it is not standard with the windows I have. > >Was it ever standard with Windows or DOS? If memory serves, it was always >an add-on package. IIRC, MASM 1.0 was abouit $100, which didn't make it >much of a bargain. > >LIB and LINK were packaged with DOS, but not MASM. ASM was standard with >CP/M, but it was kind of brain-dead (no macro facility, linking or >relocation). Most folks who wanted to program assembler seriously on 8 bit >stuff picked up either M80/L80 or RMAC. > >Didn't the Polymorphic or Processor Tech systems box ship with a resident >editor (BASC-style with line numbers) and a simple assembler? I seem to >remember hacking the I/O in it to work with my MITS box. Even added a few >of my own commands. > >Cheers, >Chuck > PTC did ALS-8 and you remember it. They werent the only one but it was notable. Allison

20 years, 9 months

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More parts I need to replace on the VT100

by dwight.elvey＠amd.com

>From: ard at p850ug1.demon.co.uk > >> >> Hi >> I looked at the schematic and the parts you'd indicated. >> It looks like one of them was one off and was R55 and not >> D11. From the looks, it might be that you have other failures >> in the supply. You've indicated R11, R21 and R55. These >> are all part of the circuit that drives the primary switcher >> transistor through T3. > >Having looked at the printset, the first thing that struck me is that >these are all high power resistors (2 or 3 watt rating). They would >naturally run hot, therefore, and may look discoloured without there >being anything wrong with them. > >Before we dive into this PSU, I would be interested to know if the thing >produces any output voltage, and if those 3 resistors test bad on an >ohmmeter. > >-tony Hi I agree. But as noted, this should be done without connecting the rest of the terminal. My only question is what toasted R21. From the schematic, it should on be supplying current to only R55. If we assume that R55 is running at 100%, ( which it shouldn't ) R55 will have 43 ma flowing in it. This current is only a wattage of 150 milliwatts in R21. This is well below it's rated value of 3.75 watts. I find it unlikely that anything less than a short connecting the mains to the winding of T3 pins 6 & 5 could bring R21 to a current level that would burn it as well as R55. The Diode D11 being short might only wipe out R55. C6 shorted might take both out and increase the power on R11 enough to do in R11 as well. He might check to make sure that C6 isn't shorted. What do you think? How else can I get R21 hot enough? Dwight

20 years, 9 months

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Old MS-DOS & WIN Software

by dm561＠torfree.net

Toronto, ON in chilly Canada. m ----------------Original Message--------------------- From: "Gil Carrick" <gilcarrick at comcast.net> Subject: RE: Old MS-DOS & WIN Software Where are you located? Gil > -----Original Message----- > From: cctalk-bounces at classiccmp.org > [mailto:cctalk-bounces at classiccmp.org] On Behalf Of M H Stein > Sent: Friday, December 02, 2005 3:08 AM > To: 'cctalk at classiccmp.org' > Subject: Old MS-DOS & WIN Software > > I'm getting rid of several large boxes of old MS-DOS & WIN > software, OSs, apps, languages, utilities, games, etc. <.... blah, blah...> > TIA, > > mike >

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Kennedy 9600 9-track w/DQ132 on mVAX-II??

by henk.gooijen＠oce.com

replied off-list. The documentation will appear before the end of this month ... - Henk, PA8PDP. > -----Original Message----- > From: cctalk-bounces at classiccmp.org > [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Bert Thomas > Sent: vrijdag 2 december 2005 13:11 > To: On-Topic and Off-Topic Posts > Subject: Re: Kennedy 9600 9-track w/DQ132 on mVAX-II?? > > Gooijen, Henk wrote: > > Bert, > > I live in The Netherlands, and I can scan and upload to bitsavers. > > I am willing to put my time into scanning (at 600 dpi, > PDF), but I am > > not willing to put money into it (for example for shipping ...) > > > > No problem Henk, give me your address and I'll send it to you. > If you need to, you may take it apart. I won't mind. > > Regards, > bert This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 9 months

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Kennedy 9600 9-track w/DQ132 on mVAX-II??

by henk.gooijen＠oce.com

Bert, I live in The Netherlands, and I can scan and upload to bitsavers. I am willing to put my time into scanning (at 600 dpi, PDF), but I am not willing to put money into it (for example for shipping ...) - Henk, PA8PDP. > -----Original Message----- > From: cctalk-bounces at classiccmp.org > [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Bert Thomas > Sent: vrijdag 2 december 2005 11:38 > To: On-Topic and Off-Topic Posts > Subject: Re: Kennedy 9600 9-track w/DQ132 on mVAX-II?? > > Robert Armstrong wrote: > Anybody got a manual for the 9600? Bitsavers has the > manual for the 9610, but it appears that the 9600 is > substantially different. > > I have the manual and a complete drive for parts. Bad news is > that I live in the Netherlands and have no decent way to scan > the manual. You can have what you want for the price of shipping. > > Bert This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 9 months

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Old MS-DOS & WIN Software

by ajp166＠bellatlantic.net

> >Subject: Old MS-DOS & WIN Software > From: M H Stein <dm561 at torfree.net> > Date: Fri, 02 Dec 2005 04:07:53 -0500 > To: "'cctalk at classiccmp.org'" <cctalk at classiccmp.org> > >I'm getting rid of several large boxes of old MS-DOS & WIN >software, OSs, apps, languages, utilities, games, etc. > >Also boxes of hardware such as PC MoBos, cards, keyboards, >external print buffers, converters, <=9600bd modems etc. > >I realize without a detailed list this is rather vague, but I'd like >to know if there's any interest in this sort of stuff to make it >worth while actually making that list. > >If not here, maybe someone knows of another list where someone >may be interested? > >TIA, > >mike

20 years, 9 months

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How to load ADVENT on PDP-8?

by rick＠rickmurphy.net

At 02:36 AM 12/2/2005, Gooijen, Henk wrote: >I tried to run ADVENT on my 6809-based PDP8/e simulation, but >it did not work. I asked Dough and he told me that ADVENT >stores its files using the *physical address* on the disk. >So, if you copy the files and they end up on a different >location on your target disk, ADVENT is not able to read them. > >This is from memory, and I could be wrong ... Nope, you're right. Basically, it's a FORTRAN program that has some files open then suspends itself. You save the suspended program then resume it; since it doesn't close and reopen the files, it reads from where it thinks the file is located. However, what happens in that case is that the program displays garbage rather than the expected text - that shouldn't crash the emulator. -Rick

20 years, 9 months

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Kennedy 9600 9-track w/DQ132 on mVAX-II??

by bob＠jfcl.com

I have a MicroVAX-II and I want to add a Kennedy 9600 9 track drive. AFAIK, this drive has a standard Pertec interface and I was planning to use it with a Dilog DQ132 controller. The drive is capable of both 800 and 1600bpi, and I need to be able to use it at both densities. I installed it and cabled it all up - VMS (v4.5 in this case) sees the DQ132 and autoconfigures it as MSA0 (a good sign!), and the drive seems happy and loads a tape. VMS reports that MSA0 is a TSV05 (which is what I'd expect) and doesn't log any errors. But, whenever I try to access the drive, VMS says that it's offline and I can't get it to actually do anything. Yes, the Kennedy is actually online (the online LED is lit) and the "select" LED on the drive flickers for an instant when VMS tries to access the drive. The drive is set as unit 0, and it was working the last time it was used (with an Emulex controller in that instance). Just for fun, I tried the Kennedy drive with a real TSV05 (M7196) controller that's known to work with a real TSV05 drive - same results. Is there any obvious reason why this wouldn't work? The 9600 is Pertec, right? If you Google for this drive you'll find a couple of places that say it's SCSI, but that seems wrong. Anybody got a manual for the 9600? Bitsavers has the manual for the 9610, but it appears that the 9600 is substantially different. Thanks, Bob Armstrong

20 years, 9 months

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Simple 8-bit D-A / load meter?

by ethan.dicks＠gmail.com

I've dug around a bunch, even here http://www.ibiblio.org/pub/Linux/system/status/!INDEX.short.html ... where I thought things were, but I appear to have lost an old file that described how to make a simple D-A that one could hang off of an 8-bit I/O port to generate a voltage from approx 0 VDC to +5VDC. Does anyone remember an ancient file describing how to build such a device? ISTR it resembles a Disney Sound Source, a klunky dongle that was supported by such games as "Return to Zork" if you didn't have a sound card in your machine... more or less a resistor ladder that allows you to eject waveforms that sound more or less like something you'd expect to hear coming out of a cheap PC sound card. Yes, I could design this from scratch... but since I built one a few years ago from a file I found while grubbing around for external load meter hardware, I'd rather just use something like that as a starting point than take the time to reinvent the wheel. Thanks for any and all pointers to this tidbit of knowledge. -ethan

20 years, 9 months

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Simple 8-bit D-A / load meter?

by dm561＠torfree.net

If you don't need high accuracy and/or have a good selection of resistors you can do it with one resistor per bit, each one twice the value of the next; that was the "standard" user port interface for generating sound and music on a PET, BTW. mike ---------------------------Original Message ------------ Date: Thu, 1 Dec 2005 19:23:14 +0000 From: Ethan Dicks <ethan.dicks at gmail.com> On 12/1/05, Gordon JC Pearce <gordonjcp at gjcp.net> wrote: > Ethan Dicks wrote: > > ... where I thought things were, but I appear to have lost an old file > > that described how to make a simple D-A that one could hang off of an > > 8-bit I/O port to generate a voltage from approx 0 VDC to +5VDC. Does > > Off the top of my head, look in the top left bit of a TB303 circuit > diagram where the 7-bit converter to generate the VCO control voltage > is. Googling for "tb303.gif" should bring it up. I did eventually find that at http://www.hylander.us/images/schematics/roland/tb303.gif Thanks for the hint. -ethan

20 years, 9 months

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How to load ADVENT on PDP-8?

by henk.gooijen＠oce.com

I tried to run ADVENT on my 6809-based PDP8/e simulation, but it did not work. I asked Dough and he told me that ADVENT stores its files using the *physical address* on the disk. So, if you copy the files and they end up on a different location on your target disk, ADVENT is not able to read them. This is from memory, and I could be wrong ... - Henk, PA8PDP. > -----Original Message----- > From: cctalk-bounces at classiccmp.org > [mailto:cctalk-bounces at classiccmp.org] On Behalf Of > charlesmorris at direcway.com > Sent: donderdag 1 december 2005 22:11 > To: cctalk at classiccmp.org > Subject: How to load ADVENT on PDP-8? > > I have the ADVENT files for PDP-8 (from the diagpack2.RK05 > image) but it won't run under SIMH (simulator halts on error). > Does anyone have the load/run instructions? > thanks > Charles This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.

20 years, 9 months

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Do old FPGA's decay?

by cclist＠sydex.com

I found why my PCTD 3 tape controller was defying my attempts to probe it--the XC2064-50 FPGA seems to be dead as a doornail. Regardless of signal inputs, it remains stubbornly inactive--i.e., my logic analyzer says that none of the identifiable outputs changes state. Since DMA and interrupt logic (as well as configuration) is contained in the FPGA, attempting to read from any I/O port returned FF. A jumper bypassing the FPGA for IO read, shows that the drive status lines are indeed present and readable. Similarly, writing to the appropriate I/O address causes the expected drive line to wiggle. Since I don't need soft configurability (only for IRQ and DMA; the I/O address is set via DIP switch), I may remove the FPGA and substitute some TTL. I haven't decided yet. But do old FPGA's just quietly go belly-up? Or is there something about the XC2064-50 that I'm in the dark about? Are there any easy tests that I can apply to confirm my suspicions? Cheers, Chuck

20 years, 9 months

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How to load ADVENT on PDP-8?

by charlesmorris＠direcway.com

I have the ADVENT files for PDP-8 (from the diagpack2.RK05 image) but it won't run under SIMH (simulator halts on error). Does anyone have the load/run instructions? thanks Charles

20 years, 9 months

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OT: "Best" Linux Distro?

by ajp166＠bellatlantic.net

> >Subject: Re: OT: "Best" Linux Distro? > From: "Chuck Guzis" <cclist at sydex.com> > Date: Thu, 01 Dec 2005 11:21:38 -0800 > To: cctalk at classiccmp.org > >On 12/1/2005 at 1:01 PM Allison wrote: > >>Same here. There are a few that barely run on anything less than p-III >>class hardware. >> >>Since I have an abundance of older 486class stuff I use Freebsd 2.2.6 >>and a 7 year old copy of Slackware or Caldera OpenlinuxV2.3 when I >>want a linux box. > >For the "look what we can do with a single floppy boot" category, it's >pretty hard to beat the old QNX demos: > >http://toastytech.com/guis/qnxdemo.html > >Cheers, >Chuck Then there was NewDeal Office. All you needed was dos3 or higher. The version 3 demo I have ran ok on 40mb or less of disk. Allison

20 years, 9 months

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Part question...6845 CRTC

by ajp166＠bellatlantic.net

> >Subject: Re: Part question...6845 CRTC > From: Scott LaBombard <labomb_s at yahoo.com> > Date: Thu, 01 Dec 2005 16:26:00 -0800 (PST) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >Hi Allison, > >> I've never used the 6845 CRTC but over the years >> I've heard the Hitachi >> part is a better version than the older Motorola >> one. Lacking a datasheet >> for Hitachi what is the differnce? > >Take a look at: > >http://andercheran.aiind.upv.es/~amstrad/docs/crtcnew.html > >It appears that the Moto part it a 'Type 2' and the >Hitachi part is a 'Type 0'. The differences between >each type (as well as others) appear to be detailed in >the 'CRTC Differences' section of this web site. That helps, Thanks now I can go to the moto data and feel comfortable. Allison

20 years, 9 months

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Part question...6845 CRTC

by ajp166＠bellatlantic.net

I've never used the 6845 CRTC but over the years I've heard the Hitachi part is a better version than the older Motorola one. Lacking a datasheet for Hitachi what is the differnce? I do have the moto part data sheet. Allison

20 years, 9 months

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More parts I need to replace on the VT100

by dwight.elvey＠amd.com

Hi I looked at the schematic and the parts you'd indicated. It looks like one of them was one off and was R55 and not D11. From the looks, it might be that you have other failures in the supply. You've indicated R11, R21 and R55. These are all part of the circuit that drives the primary switcher transistor through T3. You might check D11 to make sure it isn't shorted. You might want to run the supply separately to check outputs. A short in T3 to the mains would also cause a lot of troubles and burn these resistors( taking may other part with it ). Other parts to look at would be: Q2, Q3, Q4, E5 and D4 These are parts that could also be involved. It does look like there is something other than the resistors blown in the supply. Dwight

20 years, 9 months

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Berg connector repair

by dbetz＠xlisper.mv.com

I have a wire that is broken on the Berg connector that plugs into my DLV12 controller for my RL01 drive. How do I remove one of the pins >from the Berg connector so that I can reattach the broken wire? Is it possible to repair these connectors or do I have to replace it?

20 years, 9 months

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Kennedy 9600 9-track w/DQ132 on mVAX-II??

by ajp166＠bellatlantic.net

> >Subject: Kennedy 9600 9-track w/DQ132 on mVAX-II?? > From: "Robert Armstrong" <bob at jfcl.com> > Date: Thu, 01 Dec 2005 09:40:13 -0800 > To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> > > I have a MicroVAX-II and I want to add a Kennedy 9600 9 track drive. >AFAIK, this drive has a standard Pertec interface and I was planning to use >it with a Dilog DQ132 controller. The drive is capable of both 800 and >1600bpi, and I need to be able to use it at both densities. > > I installed it and cabled it all up - VMS (v4.5 in this case) sees the >DQ132 and autoconfigures it as MSA0 (a good sign!), and the drive seems >happy and loads a tape. VMS reports that MSA0 is a TSV05 (which is what I'd >expect) and doesn't log any errors. But, whenever I try to access the >drive, VMS says that it's offline and I can't get it to actually do >anything. > > Yes, the Kennedy is actually online (the online LED is lit) and the >"select" LED on the drive flickers for an instant when VMS tries to access >the drive. The drive is set as unit 0, and it was working the last time it >was used (with an Emulex controller in that instance). > > Just for fun, I tried the Kennedy drive with a real TSV05 (M7196) >controller that's known to work with a real TSV05 drive - same results. > > Is there any obvious reason why this wouldn't work? > > The 9600 is Pertec, right? If you Google for this drive you'll find a >couple of places that say it's SCSI, but that seems wrong. > > Anybody got a manual for the 9600? Bitsavers has the manual for the 9610, >but it appears that the 9600 is substantially different. No manual but do check the interrupt grant chain. I've been dinged a few times because I had a gap in the chain and VMS sorta finds the device but cant really work it. Allison

20 years, 9 months

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Do old FPGA's decay?

by ajp166＠bellatlantic.net

> >Subject: Re: Do old FPGA's decay? > From: Brad Parker <brad at heeltoe.com> > Date: Thu, 01 Dec 2005 07:28:29 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > > >"Chuck Guzis" wrote: >> >>But do old FPGA's just quietly go belly-up? Or is there something about >>the XC2064-50 that I'm in the dark about? Are there any easy tests that I >>can apply to confirm my suspicions? > >Doesn't it need to be 'loaded', either via a eeprom or the pcu? > >Most older fpga's (I thought) had to be programmed at startup via some >form of bit-serial line. This is often something like an i2c eeprom >directly attached to the chip. > >I have not looked that XC2 datasheet, however. (actually, I'm having trouble >finding one...) > >-brad I looked up the ISP2064 (lattice) and that is the case. Also if the mode pins are set a differnt way it can parallel load from a common ee/e/rom or microprocessor. Allison

20 years, 9 months

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Uses for AS400 9040?

by Arno_1983＠gmx.de

Bill Richman <bill at timeguy.com> wrote: > I was just given an IBM AS400/9040 at the computer refurb/recycling shop > I operate. Is there anything legitimate that it could be used for, I should think there's no law prohibiting its use as a space heater?! In fact there shouldn't be many illegitimate activities involving the _hardware_, unless one tips it over onto people, uses it to crushes foreign property or pollutes the environment with it ;-). Kidding aside...as just recently explained, the problem is the OS for it. Before I go repeating stuff that I only picked up here on the list, I suggest looking for the knowledge which has already been exchanged here; two starting points out of a lot more: http://www.classiccmp.org/pipermail/cctech/2003-December/022896.html http://www.classiccmp.org/pipermail/cctalk/2003-January/013268.html As an aside, "9040" isn't an AS/400 designation I could easily find...any chance you mixed up the symbols, "9404" looks a lot more like it? > or should I scrap it? I know nothing about it other than that it's big > and heavy, and it seems to IPL according to the front-panel display. That last sentence essentially _is_ three arguments not to scrap it, at least to me... I've never touched an AS/400 before, but should like to. > I'm going to try to hook a terminal to it, but I'm not sure how quite yet. http://www.classiccmp.org/pipermail/cctech/2002-December/006151.html is yet another thread worth having a look. However it only deals with twinax terminals; I've never heard of somebody accessing one via serial console. So long, yours sincerely -- Arno Kletzander Stud. Hilfskraft Informatik Sammlung Erlangen www.iser.uni-erlangen.de Highspeed-Freiheit. Bei GMX superg?nstig, z.B. GMX DSL_Cityflat, DSL-Flatrate f?r nur 4,99 Euro/Monat* http://www.gmx.net/de/go/dsl

20 years, 9 months

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A heads-up: updated holiday vintage computer buyers guide

by news＠computercollector.com

Just an FYI, today I updated the buyers guide. (Is it missing anything?) http://www.snarc.net/c-holidays.php ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Computer Collector Newsletter: >> http://news.computercollector.com Mid-Atlantic Retro Computing Hobbyists & Museum: >> http://www.marchclub.org >> http://groups.yahoo.com/group/midatlanticretro/

20 years, 9 months

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Do old FPGA's decay?

by ajp166＠bellatlantic.net

> >Subject: Do old FPGA's decay? > From: "Chuck Guzis" <cclist at sydex.com> > Date: Thu, 01 Dec 2005 02:07:31 -0800 > To: cctalk at classiccmp.org > >But do old FPGA's just quietly go belly-up? Or is there something about >the XC2064-50 that I'm in the dark about? Are there any easy tests that I >can apply to confirm my suspicions? > Not that I know of and I use them. Years ago Tim gave me a bunch of 2064s and 3030s to learn FPGAs and I've used a bunch of them. All of mine load >from an eprom and I've had the eeprom that loads it fail. Like any device it can fail though. At power up it should have activity on the programming IO. Allison

20 years, 9 months

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