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

by kyrrin＠bluefeathertech.com

Hi, gang, Cleaning up today, thanks to lousy weather, and I've come across a couple of items I don't need. First is a DEC VT220 Programmer Pocket Guide. This one'll be a freebie to whoever wants it IF you're in the United States (I can send it for less than a dollar via postal). If you're outside the US, I'd ask for the cost of postage to be covered. Next up is a terminal emulation package made by Microplot. More specifically, it's called PC-PLOT-IV PLUS, and it is designed to, on a DOS PC, emulate the Tektronix 4010, 4014, and 4105 graphics terminals. It will also emulate a VT100. The 5.25" floppy disk says it's version 4.20J. For that one, I'll let you tell me what it's worth by E-mailing an offer if you're interested. Thanks much, there may be more to come as I uncover other hidey-holes. -=-=-=-=-=-=-=-=-=-=-=- 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?"

21 years, 7 months

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More DEC VT520 terminals available on the VCM

by vcf＠siconic.com

I just put three more DEC VT520 terminals up for sale at $25 each on the Vintage Computer Marketplace: http://marketplace.vintage.org/view.cfm?ad=1133 That's a multiple quantity listing. These are great all-around terminals: very versatile! See listing for more info. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 7 months

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Museum of Computing Launch Party

by swebb＠cix.co.uk

The Museum of Computing is holding a launch party for its latest exhibition, 'Computers on the Move' the history of mobile computing. If anybody would like to join us you would be very welcome. Monday 13th September, 18:00-20:30 The Museum of Computing The University of Bath in Swindon Oakfield Campus Marlowe Ave Swindon SN3 3JR Simon Webb Curator, Museum of Computing www.museum-of-computing.org.uk Tel: 07939 582544

21 years, 7 months

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Near-classic: Win95 beta CDs

by rcini＠optonline.net

Hi: I'm trying to track down a particular program from the Windows 95 beta program. I must have purged a bunch a while back by mistake. Here's what I'm looking for...I can't remember if it's on the Win95 or DirectX beta disks, but it's some sort of space station demo that enables you to access the various demo programs on the disk. Specifically, I'm looking for the WAV and/or MIDI files from it. If any remembers this and can put their hands on it, please let me know off-list. Thanks. Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

21 years, 7 months

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Polymorhic 8810

by dwight.elvey＠amd.com

>From: cswiger <cswiger(a)widomaker.com> > >On Mon, 30 Aug 2004, Ed Chapel wrote: >> Currently on eBay is an auction for a Poly 8810. >> The seller shows pictures of the screen with random text garbage. >> Anyone know if this is normal for these systems, if perhaps a boot disk is >> >Let me amend the last response - I'm ONLY speaking about the video >card, I know nothing about the Poly systems, if a ROM is supposed to >clear the display memory before hitting the disk or what ;) But >what is shown is good power, video memory and signal. > >--Chuck > > Hi It is possible that someone has grabbed a video card out of a Poly88 and stuck it in the Poly8810. This would require changing the address select from D000H to 1800H of the video. I believe ( as I reacll ) that the video is cleared right at the first before the disk seek happens. Dwight

21 years, 7 months

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Software

by Pres＠macro-inc.com

Got an email offlist from a person in .de wanting a copy of Emulex tape/disk/comm product diagnostics and formatters. My replies keep bouncing, so go ahead and contact me again please. I have 2 teledisk images and txt file zipped up. Is there a place that archives this and would want a copy? Ed The EMULEX RX50 diagnostic kit consists of two RX50 diskettes. Diskette 1 contains all the disk and tape diagnostic required to allow you to format, install, and troubleshoot the following EMULEX disk and tape products. CONTROLLER PROGRAM NAME FUNCTION SC03/BX SXBX0B FORMAT AND VERIFY S1B19X RM DISK EXERCISER S1B29A RP06 DISK EXERCISER SC03/MS SXMX8B FORMAT,VERIFY,NOVRAM QD01 LOADER QD32 SC02/C SXCX0D FORMAT,VERIFY, DISK EXERCISER UC03 U1MX8E FORMAT AND VERIFY UC01 U1LX0D FORMAT AND VERIFY S1LX8A BAD SECTOR UTILITY S1LX9A DISK EXERCISER SC02/L S1LX8A BAD SECTOR UTILITY S1LX9A DISK EXERCISER TC02 T1SX2A DATA RELIABILITY TC03 TC05 TC03 T1SX3A DATA RELIABILITY FOR TAPE DRIVES WITH NO READ REVERSE CAPABILITY IN GCR QT12 T1QX3A DATA RELIABILITY Diskette 2 contains all the diagnostics necessary to install and test the following EMULEX communications products. CS01/H2 C1H21A COMPREHENSIVE TEST C1H22A DATA RELIABILITY CS01/H2/128 WD SILO OPT C1H21B COMPREHENSIVE TEST C1H22A DATA RELIABILITY CS01/H2/256 WD SILO OPT C1H21C COMPREHENSIVE TEST C1H22A DATA RELIABILITY CS02/H2- DH C1HX1A COMPREHENSIVE TEST C1HX2A DATA RELIABILITY - DHV C1HV1A FUNCTION TEST 1 C1HV2A FUNCTION TEST 2 C1HV3A FUNCTION TEST 3

21 years, 7 months

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Software

by pete＠dunnington.u-net.com

On Aug 31 2004, 14:23, Ed Kelleher wrote: > Got an email offlist from a person in .de wanting a copy of Emulex > tape/disk/comm product diagnostics and formatters. > > My replies keep bouncing, so go ahead and contact me again please. > > I have 2 teledisk images and txt file zipped up. > Is there a place that archives this and would want a copy? I can't really put them online, but I'd like a copy if possible, becasue I have an SC03/BX, an SC03/MS, a QD32, a TC02, and a CS02, but only some of the software. -- Pete Peter Turnbull Network Manager University of York

21 years, 7 months

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Building 6502 machine was Re: eBay madness

by dwight.elvey＠amd.com

>From: "Philip Pemberton" <philpem(a)dsl.pipex.com> ---snip--- >What I would like to do is build a replica of the MOS KIM-1 (or Synertek >SYM-1, more likely the latter). I've got a CPU chip, but I'd need to source >some 6530 (or 6532? can't remember the part number perfectly) RIOT chips or >emulate them with an FPGA. As for the keyboard, well, there's always >keyswitches and PCB blanks :) >In case you haven't guessed, I like the 6502 - never really managed to get to >grips with Z80 assembler, but 6502 ASM was easy (no worse than learning PIC16 >assembler). > >Later. >-- >Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB, Hi Phil You could use a 6532 in place of the KIM's 6530. It would require some external decoder logic to get the ROM data to an external ROM. Also, the internal selects my be masked different than the permanent selects of the 6532. This would also require a little translation. There are no original 6530's with the KIM mask available unless one trashes a KIM to get it ( don't even think of doing that ). The SYM-1's don't use a 6530 so that is not an issue for them :) Dwight

21 years, 7 months

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Polymorhic 8810

by ejchapel＠comcast.net

Currently on eBay is an auction for a Poly 8810. The seller shows pictures of the screen with random text garbage. Anyone know if this is normal for these systems, if perhaps a boot disk is not readable? Or is this a hardware problem? The eBay item number is 5119743938

21 years, 7 months

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Polymorhic 8810

by dwight.elvey＠amd.com

>From: "Barry Watzman" <Watzman(a)neo.rr.com> > >I'd say that it's not working. The random display does suggest that a lot >of the video card is functional. However, it also suggests that the ROM >monitor on the CPU card isn't being run, which would clear the screen. This >could suggest bad memory or CPU or both, but in any case I'd say that, >contrary to what the seller says, the system is not functioning properly. > > > > Hi I'd tend to agree with Barry. I have 2 Poly88's and one 8813. This is an indication that the system is not running. The video memory quite commonly has failures but this usually shows up as a chunk of the video not responding correctly. The video uses 2111 chips ( often 9111 populated ). I am seeing some quadrant like behavior so it might just be a lot of bad video RAM. If anyone gets this that is on the list, I can help them bring it back to life. Finding some of the RAM chips that work may be an issue. I went through a pile of these that Achor Electronics had and found only one in three that was any good. The fact that the disk seeks is a good indication though. If it is in fact doing this, the ROM's must be doing something. Dwight

21 years, 7 months

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Best keyboards you've used ever!

by dwight.elvey＠amd.com

>From: ard(a)p850ug1.demon.co.uk > >> > Brent> Speaking of various keyboards: some time ago I received a bare >> > Brent> (no machine, no case, no ID) keyboard utilising >> > Brent> magnetically-activated reed relays for the key contacts. Reed >> > Brent> relays were commonly used for calculator keyboards in the >> > Brent> late-60s/early 70s and it probably dates from this era, but >> > Brent> this is the only occasion I have seen reed relays used in an >> > Brent> alphabetic keyboard. >> > >> >> Tektronix also used this. The Tek 4014 has such a keyboard. > >Maybe we should make a list of the various keyboard technologies : > >Mecahnical switches > Metal contacts pressed together by key > 'Snap action' domes or strips (e.g. HP35) > Membranes pressed together when key is pressed > Metal contacts held apart and allowed to touch when key is pressed > (e.g. VT100) > Microswitches > Reed switches > >Hall Effect sensors > >Capacitance change devices > Plastic flap over PCB (e.g. IBM PC) > 'Keytronics' type > >Transformer coupling between PCB tracks -- moving core on the key >(e.g. ICL Termiprinter) > >Pair of balanced transformers, one of which is damped by the key (e.g HP9810) > >Mecahnical encoding, parallel output mechanical contacts (e.g. ASR33) > >Mechanical encoding, serial output mechanical contact (e.g. Creed 7E) > >What have I missed (I think I have examples of all of those in use here!) > >-tony > Hi You missed acoustic delay line. Dwight

21 years, 7 months

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Billings Computer Corp.

by rich_bramante＠yahoo.com

I caught a glimpse of one of these today in major disrepair while picking up something else. Unibody, dual 5.25" floppies. Billings Computer Corp. Anybody else have any more info on these? _______________________________ Do you Yahoo!? Win 1 of 4,000 free domain names from Yahoo! Enter now. http://promotions.yahoo.com/goldrush

21 years, 7 months

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archiving Heath H8/H89 hard-sectored disks

by ddl-cctech＠danlan.com

"Jay West" <jwest(a)classiccmp.org> wrote: |It was written... |> I've come up with a way to read Heath hard-sectored disks with a |1797-style |> controller (with some modifications). I've now archived all of my old |disks |> with only one unrecoverable error in an unused sector (not bad for media |that |> is approaching 30 years in age). I do seem to have run through *drives* |at |> an alarming rate, though I hope that the cleaning disks I have on order |will |> restore some of them. Is anyone interested in: | |I have a huge cache of H8/H89/Z100 software, half a room full at the least |(the other half of the room being documentation for same). Where are you |located? Gloucester, MA |I'd rather not ship it all, but would welcome someone to come over |and archive the bits. I'd rather not move my computer, though. It's already reaching that sensitive-to-shock stage, especially the Ethernet card. (Yes, my H100 has Ethernet, which is very convenient for the archiving process.) |I would bet I have more than a few spare hard sector drives as well, many |new in the box. That might be good, since my cleaning kits arrived and they do not appear to restore the drives in question. :( Of course, they just use isopropyl alcohol which was never as good as the (now evil) chlorinated hydrocarbon solvents. I wonder if there is something stronger I can use? Dan Lanciani ddl(a)danlan.*com

21 years, 7 months

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Phone Talk / Apple Talk

by pete＠dunnington.u-net.com

On Aug 31 2004, 0:44, Ron Hudson wrote: > I am currently using an Imagewriter printer cable to hook up one > device, and that > seems to work ok, and there is no electronics there.. Perhaps the > transformers are > for some safety - decoupling purpose? You have the equivalent of a point-to-point link, with Tx on one device connected to Rx on the other. When you have things set up as a network, all the Txs go onto a bus that connects all the Rxs. The transformers allow the signals to combine, and separate them for each station. But I'd expect you could just find some proper boxes easily and cheaply enough; they're not rare, even here in the UK. -- Pete Peter Turnbull Network Manager University of York

21 years, 7 months

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CBTREE source code needed

by gtoal＠gtoal.com

> This was a B+ tree package produced by Peacock Systems > (Walter Peacock) for MS-DOS (and written in C) in the late 80s > Some applications I wrote 15 years ago have > come back to haunt me and I no longer have the library source. > Any help out there? This rung a vague bell for me so I searched my entire disk and found this: pizzabox:/home/gtoal # find / -name '*[Cc][Bb][Tt][Rr][Ee][Ee]*' -print /backup/acorn-www/NFS/A440/Informat/cbtree,ddc /backup/acorn-www/NFS/A440/Informat/cbtree,ddc-spark.txt I used a package of this name back in the 80's and by sheer chance I happened to have a copy of it on a bunch of old Acorn Archimedes floppies which I read back in a year or two ago. I've unpacked the contents of the "Spark" format archive using nspark - so, come and get it :-) (the C files will be in the cbtree/C subdirectory) http://www.gtoal.com/acme/ Graham

21 years, 7 months

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Phone Talk / Apple Talk

by technobug＠comcast.net

On Mon, 30 Aug 2004 17:53:08 -0700 Ron Hudson <ron.hudson(a)sbcglobal.net> asked: > > Anyone know how these are wired inside? could I make a dedicated 3 node > "wire" out of just > wire and connectors? perhaps an odd resistor or two? First some definitions: Appletalk is the protocol that Apple used for connecting to printers and other computers. Localtalk is the hardware specification. Looking around for the latter will give you a lot more information. The problem Apple (and others) solved is how to connect multiple RS232 (RS422) devices together without blowing everything to bits. Their solution was to use a transformer with two independent windings on the primary and one on the secondary (along with a few resistors). The secondary windings are paralleled among the various devices. The primaries are connected to the Tx and Rx of the RS232. This makes for a simple two-wire network. Normally, the ends of the secondary bus are terminated in 110 Ohm resistors. Apple's implementation used proprietary cables. Third party boxes (Farallon, etc.) used RS11 phone cables. I've seen these boxes at various charity outlets in the recent past going for next to nothing. If you have an old phone modem laying around (parts - not collectable...) you can use the output coupling transformer to make an adaptor. They generally have the two-primary/one-secondary format and have the correct ratio. The receiver side of the primary should be terminated with a couple hundred Ohm resistor. As a side note, there are a lot of Localtalk printers and the like showing up for cheap. Connection to Windoze and Linux boxes are generally a problem. There are cards that talk Appletalk, but they are fairly scarce. However, there are a number of bridges coming available that connect ethernet to Localtalk and the Appletalk drivers are available for both OSs. CRC

21 years, 7 months

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Polymorhic 8810

by Watzman＠neo.rr.com

I'd say that it's not working. The random display does suggest that a lot of the video card is functional. However, it also suggests that the ROM monitor on the CPU card isn't being run, which would clear the screen. This could suggest bad memory or CPU or both, but in any case I'd say that, contrary to what the seller says, the system is not functioning properly.

21 years, 7 months

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Bruker Aspect 3000 computer and drives available

by BLANE＠agr.gov.sk.ca

I have a working bruker aspect 3000 and the disc drive, is there any buyers you might know of for these items? Barry Lane - Audio Visual Services Saskatchewan Agriculture, Food and Rural Revitalization Room B5, 3085 Albert St. Regina, Saskatchewan, CANADA S4S 0B1 (306) 787-5158 FAX 787-0216<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> <http://www.wideopenfuture.ca/>

21 years, 7 months

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$2 sale - concluded

by aw288＠osfn.org

Thanks to all that responded. I couldn't cover everyone, so if I missed you, or you were beaten to the punch, sorry. The winners have been notified. Guys, remember if you Paypal, do not use this osfn email address for my account, but the bestweb one. Thanks all! William Donzelli aw288(a)osfn.org

21 years, 7 months

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Phone Talk / Apple Talk

by cb＠mythtech.net

>One of my customers has a box full of those lil thingers... small >(matchbox-like) boxes, right? If anyone wants em, that could >probably be arranged :) Yup, they are about the size of a fat matchbox, with a tail on one end and two RJ-12's on the other. The LocalTalk version is a little thinner, and has two mini-din 3 jacks instead of RJ-12 jacks. I see them all the time on the LEM Swap list for darn near free. -chris <http://www.mythtech.net>

21 years, 7 months

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Looking for a DOS command-line e-mail client

by pete＠dunnington.u-net.com

On Aug 30 2004, 18:33, Vintage Computer Festival wrote: > On Mon, 30 Aug 2004, Peter C. Wallace wrote: > > > PC pine works fine, > > No it doesn't: > > Command Line Arguments > > Pine > > ... > > < file > Pine will startup in the composer with file read into the body of the > message. Once the message is sent, the Pine session closes. > I don't want to go into the composer. I want it to just send the damn > message I specify to the address I tell it to! Can't you just wrap the invocation of pine and the key sequence to send the message in a 2- or 3-line DOS batch file? -- Pete Peter Turnbull Network Manager University of York

21 years, 7 months

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Phone Talk / Apple Talk

by cb＠mythtech.net

>Anyone know how these are wired inside? could I make a dedicated 3 node >"wire" out of just >wire and connectors? perhaps an odd resistor or two? There is some small degree of electronics. I know there are plans online for building one from scratch, but you can probably find some phonenet connectors for dirt cheap (or even free... I had a case load and would have happily given you some, but I gave the entire case to Tom Owad on this list last year... you can ask him if there are some left he isn't using). -chris <http://www.mythtech.net>

21 years, 7 months

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Classic computer job/work offer (UK)

by jwest＠imail.kwcorp.com

I was contacted by a gentleman in the UK who has two PDP-11/53 systems that control a "printing press management information system". They are currently not working. He is looking for someone to repair, and possibly support them for a couple of years. If anyone is interested, contact me off-list. Regards, Jay West --- [This E-mail scanned for viruses by Declude Virus]

21 years, 7 months

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Phone Talk / Apple Talk

by pete＠dunnington.u-net.com

On Aug 30 2004, 17:53, Ron Hudson wrote: > > Anyone know how these are wired inside? could I make a dedicated 3 node > "wire" out of just > wire and connectors? perhaps an odd resistor or two? I've never had a real Farallon PhoneTalk unit so I don't know, but I suspect it has some real electronics inside, or a hybrid transformer like LocalTalk boxes. However, if you're starting from scratch, you might look at the CapNet subsitute. The first link Google finds for "capnet localtalk" will find a copy of the document I originally saw several years ago, at http://www.jagshouse.com/localtalk.html -- Pete Peter Turnbull Network Manager University of York

21 years, 7 months

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FA: (ebay) DEC Rainbow 100, docs/sw, LA50, LA75

by rich_bramante＠yahoo.com

http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=dcymbal _______________________________ Do you Yahoo!? Win 1 of 4,000 free domain names from Yahoo! Enter now. http://promotions.yahoo.com/goldrush

21 years, 7 months

1
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WORST keyboards ever

by pete＠dunnington.u-net.com

On Aug 30 2004, 23:15, Tony Duell wrote: > > But something was nagging at me and I went and looked at the prints. > > > > The DEC DLV11-J, a 4 port unbuffered SLU had a clock I/O pin on it's Berg > > connector. > > It could output the 16x internal baud clock on that pin to drive a terminal, > > or accept a 16x external clock from a terminal, for each UART. > > That pin was commonly used with a DEC current loop converter module, the > number of which I forget (DLV11-K ???). That box plugged into the DLV11-J > at one side and had an 8 pin Mate-n-lock on the other to connect to a > standard DEC current loop cable. It also included a 110 baud (1760Hz) > generator, since the DLV11 couldn't do 110 baud as standard and the most > common reason for wanting a current loop interface was to connect to an > ASR33. Yes, it's a DLV11-K, and is also why the DLV11-J has 12V supplied on one of the connector pins. I've got one here. -- Pete Peter Turnbull Network Manager University of York

21 years, 7 months

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Imagen print controller

by ddl-cctech＠danlan.com

Anybody want an Imagen IP/II print controller (less power supply)? These are the multibus systems with a floppy that drove 300 dpi Cannon engines. Dan Lanciani ddl(a)danlan.*com

21 years, 7 months

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VAX 4000-300 - Null Modem Cable

by phirkel＠sympatico.ca

Howdy! I recently acquired a DEC MicroVAX 4000-300 and I want to connect it up to an old PC that I can use as a dumb terminal. Unfortunately, I lack a proper null modem cable, but I have a nice length of phone cable (it's the same connector pretty much, if you sand down the clip, right?) and a nice length of serial cable with connectors on each end. My question is, is it possible to jury rig these two pieces of cable, so that I can have my VAX up and running for at least a single user (Ethernet will come later! ;) ). If so, what lines should I cross (pin numbers would be nice :). Thanks. Phil.

21 years, 7 months

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archiving Heath H8/H89 hard-sectored disks

by ddl-cctech＠danlan.com

Lyle Bickley <lbickley(a)bickleywest.com> wrote: |I'll second that. | |Lyle | |On Monday 30 August 2004 12:49, Vintage Computer Festival wrote: |> On Sun, 29 Aug 2004, Dan Lanciani wrote: |> > I've come up with a way to read Heath hard-sectored disks with a |> > 1797-style controller (with some modifications). I've now archived all |> > of my old disks with only one unrecoverable error in an unused sector |> > (not bad for media that is approaching 30 years in age). I do seem to |> > have run through *drives* at an alarming rate, though I hope that the |> > cleaning disks I have on order will restore some of them. Is anyone |> > interested in: |> > |> > -Technical details (the method should work for many non-standard FM |> > formats)? |> |> Hi Dan. |> |> By all means, please post some technical details. My plan was to read a track at a time in MFM mode to get both the clock and data bits which I could decode in software. The first problem was the index holes. I disconnected the index signal from the drive and routed the 1797's index input to a bit on an i/o port. (I was doing this on an H100 so I used the manual precomp line.) With index under software control I could create a fake hole, read as many bytes of data as I wanted, and the create another fake hole to terminate the command. The next problem was clock/data synchronization. Even in MFM mode the 1797 exposes only 8 bits (that is, every other bit) of its 16-bit data shift register to the cpu. Normally a special pattern with missing clock pulses synchronizes the register to the bit stream, but of course there is no such special pattern when reading FM data as MFM. I had initially hoped that there would be enough random variation such that a few attempts at reading any given track would result in at least one instance where the data was in the desired position. Unfortunately, the reading process turned out to be pretty much deterministic and if a particular run of bits was out of phase once it was likely to remain so. To solve the bit synchronization problem I intercepted the raw data input to the 1797 and delayed each pulse by 2 microseconds with half of a 74123, using the other half to produce a pulse of similar length to the original (not that the latter is critical). I then diode-or'ed the delayed bit stream with the original and fed the result to the 1797's raw data input. This guarantees that regardless of the clock/data bit phase relationship to the data shift register, all the bits are available to the CPU. Because the 1797 uses an external clock recovery circuit the timing of my delayed pulses does not interfere with accurate clock tracking. With the raw bits in memory I apply a simple algorithm to separate clock and data. I examine a bit. If it is a 0 it must be data and I shift it to the output buffer. If it is 1 I drop it and shift the next bit to the output buffer whether it is a 0 or a 1. With the data bits in memory I simply mimic the H17's normal operation by searching from sync bytes and accumulating bytes thereafter. Note that the bits in a byte for the H17 are reversed from most other disk formats. Dan Lanciani ddl(a)danlan.*com

21 years, 7 months

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Phone Talk / Apple Talk

by ron.hudson＠sbcglobal.net

Anyone know how these are wired inside? could I make a dedicated 3 node "wire" out of just wire and connectors? perhaps an odd resistor or two?

21 years, 7 months

1
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Identify an SMD component

by chd_1＠nktelco.net

I have two identical 72pin memory SIMMS out of an HP workstation. One is damaged by having a single 3pin SMD component physically destroyed, with only the leads remaining. The second is complete and functional. The damaged component's reference designation is CR5, so I am thinking it is a rectifier and not a transistor. The black plastic SOT-23 package is marked with 5A followed by a K rotated 90deg counter-clockwise. Any suggestions on how to identify the part? Is there a pointer somewhere to how SMD components are marked? -chuck

21 years, 7 months

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IBM 5120/5120

by dwight.elvey＠amd.com

Hi Sellam Of course, I'd love to have the 5110 but I have no idea how much to offer for such a machine. Dwight >From: "Vintage Computer Festival" <vcf(a)siconic.com> > > >Let the frenzy commence! > >On Sat, 28 Aug 2004, Sharon Hamrick wrote: > >> Hello, >> >> Found your site searching on Yahoo for IBM 5110 or 5120. >> >> We have some equipment for sale maybe you might be interested in: >> >> 1 5120, IBM model 5110/3, 8" floppy drive, BASIC >> >> 1 5120 IBM model 5110/?, 8" floppy, BASIC/APL >> >> 1 5110 IBM model 5110A, internal tape drive, BASIC/APL >> >> 1 5114 IBM disk drive, 2 8" floppy drives >> >> 2 5103 printers >> >> We are an accounting firm who used these computers a very long time ago. We are moving this month, these have been in our office in storage and I would like to sell these if possible. >> >> If you are interested and would like any more detail, please contact us and I will try to provide any information needed. Some of this equipment worked when we quit using this but I do not know the condition since it has not been in use in many years. >> >> Thank you, >> Sharon Hamrick >> > >-- > >Sellam Ismail Vintage Computer Festival >------------------------------------------------------------------------------ >International Man of Intrigue and Danger http://www.vintage.org > >[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] >[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ] > >

21 years, 7 months

2
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MicroVAX3100 boot disk limited to 1GB - which ones?

by trash3＠splab.cas.neu.edu

I have a 3100-40 which has a 4Gb drive as a boot drive. The model 40 is SUPPOSED to be the same as the 30, but different case, expansion, etc. The model 30 memory certainly works in the 40. I seem to recall it is more an issue of age of firmware. I just asked a computer parts place I do business with about my model 30 and they said a 4Gb drive is the biggest that will work in it. Didn't try it though, just went to the model 40 (needed the space for more drives). Joe Heck

21 years, 7 months

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NH/VT area goodies...

by jwest＠classiccmp.org

I'm posting on behalf of Marion.... > -------------------------------------------- > > CALLING NH/VT COLLECTORS: > > There's a nonprofit organization called WinCycle in Windsor, Vermont > that receives all of a local university's unwanted computer equipment, > which they then fix up and sell or donate to people and schools who > can't afford new machines. I've been volunteering there weekly for a > few months and it's really quite an operation. > > This has been a rough year -- burglaries, management upheavals, rising > costs -- and to top it off, they just found out that they have to > vacate their corner of the warehouse by the end of September, because > the warehouse owner found a tenant who wants the entire building, and > the rental agreement is only month-to-month. We've got to start moving > stuff out of there and into another building just down the street, > pronto, and the new building is less than half the space we have now. > > To get an idea of what we're dealing with, take a look at this: > http://www.wincycle.org/images/wc-panorama.jpg > > Anything that isn't considered saleable (i.e., new enough to surf the > web and run MS Office) will be scrapped if someone doesn't take it at > scrap cost (25 cents a pound?) and some will simply be given away with > the request that you make a donation of whatever you can. There are > tons and TONS of perfectly-intact but old machines that need a home! > I've taken home nearly fifty old Macs but I can't store any more. > There's PC hardware too, and printers, monitors, keyboards, mice, hard > drives, networking gear, software, manuals, peripherals, other internal > and external parts, enough SCSI cables to circle the Earth, etc. > > Please forward this to anyone within driving distance that you can > think might be interested. Parents, please ask your schools if they > need bulk quantities of stuff; we can most likely deliver locally, if > needed. Any other institutions or organizations (churches, charities, > etc.) you can think of that might be interested in loading up in bulk, > please tell them to contact us -- they can email Tim Cary > <caryconsulting(a)direcway.com> or me. > > More general info about WinCycle here: http://www.wincycle.org but the > price list is basically null and void at this point because of our > desperate situation. If you need further info than what's on the > website, please email mbates(a)whoopis.com -- do NOT reply to the list, I > won't get your message. > > Thanks! > > -- MB --- [This E-mail scanned for viruses by Declude Virus]

21 years, 7 months

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Rescue DEC gear?

by lbickley＠bickleywest.com

A San Francisco Bay Area scrapper has the following DEC gear about to be scrapped. I've looked at it - and most of it is very clean. I'll reply with his name and email address if you let me know you are interested. I have no business interest in this transaction. Dec 5500 system --------------------- Ra90 drive missing H7142 power supply TK70 drive H7868-A REV E03 POWER SUPPLY M9404-PA KDA 50/M7165-00 KDA 50/M7164-00 TQK70/M7559-00 CXY08-M/M3119-YA DELQA-SA/M7516-PA KS220-AA/M7639-AP M7639-AF M7637 KN220/M7638 H7868-A DO1 DEC 9644 ------------- Ra90 drive missing H7142 POWER SUPPLY H7868-A M9060-YA KDA 50/M7165-00 KDA 50/M7164-00 CXY08-M/M3119-YA M9405-PA H7868-A Vax 3600 -------------- RA82 H7660C TK70 H7868-A Rev c KDA50/M7164-00 KDA50/M7165-00 EMULEX UC08 ASSY NO. UC0810201-04 REVR CXY08-M/M3119-YA REV D03 TQK70/M77559-00 DELQA-SA/M7516-PA MS650-AA/M7621-A MS650-AA/M7621-A MS650-AA/M7621-A MS650-AA/M7620-AA H7868-A REV C 4-RA92 2-RA90 DEC 5500 220-QH-D9 BA400, KN220 ------------------------------------------------- NO DRIVES KDA50/M7165-00 KDA50/M7164-00 MS220-BA/M7639 REV A2 KN220/M7637 F4 KN220/M7638 F4 H7874-00 VAX 4000/500 ------------------ KA670-AA REV C3 MS670 REV A ACTUAL BOARDS UNDER ABOVE MARKED PANELS: L4002 BA L4004 CT L4004 CP H7874-00 B03 Dec Storage Exp. Model SZ12 A-LA , BA42A, RZ55/RX23 Dec Storage Exp. Model SZ12N-B-XA, BA42A, RZ56 Dec Storage Exp. Model SZ12 C-CA, BA42A, RZ57/RZ57 Dec Storage Exp. Model SZ12 C-CA, BA42A, RZ57/RZ57 Dec Storage Exp. Model RZ5X-MT, BA42A, NO DRIVES Dec Storage Exp. Model SZ12 B-HA, RZ56/TZ30 Dec Storage Exp. Model SZ12 C-CA, BA42A, RZ57/RZ57 Dec Storage Exp. Model SZ12N-XA,BA42A, ? Dec Storage Exp. Model SZ12C-CA, BA42A, RZ57/RZ57 TK50Z-GA RZ55-FA VAXSTATION 3100 M76 MODEL VS43A-BD VAXSTATION 3100 M76 MODEL VS43A-CZ VAXSTATION 3100 M76 MODELVS43A-BD VAXSTATION 3100 M38 MODEL WS42A-DA VAXSTATION 3100 M38 MODEL WS42A-DA VAXSTATION 4000 60 MODEL VS46K-AB CPU KA46,ZZF HF00005B VAXSTATION 4000 60 MODEL VS46K-AD CPU KA46, ZZF 00005B, CD-ROM INSTALLED VAX 4000-200 RACKMOUNT 660QK-A9, BA400 CPU MOD KA660 ------------------------------------------------------------------------------- DRV1W-SA/M7651-PA KWV11-SA/M4002-PA P/N 30-18690-01(ML01338 BARCODE) KW11-SA/M4002-PA B1 WITH COAX CONNECTOR CXY08-M/M3119-YA REV D09 DELQA-SA/M7516-PA C03 (NO FUSE INTALLED MISSING FUSE CAP) CLEARPOINT CPCB-0053 REV D DCME-M30 CLEARPOINT CPCB-0053 REV D DCME-M30 PANEL SAYS MS650-BA/M7622-A A01 PANEL SAYS KA650/M7626-AA C03 UNDERNEATH ABOVE PANELS: M7626-AA C05 715AA H7874-00 B03 POWER SUPPLY TK70 RF22 70-25972-01 A01 RF73-EA A01, 70-28814-01 B03,(54-19119-01 A09) OTHER ITEMS RRD40 EXTERNAL CDROM MODEL SC008-AB A 70-18771 REV A MODEL SC008-AB B VSXXX AB DIGIPAD WITH PUCK DEC 3000 -500HY7883-YA REV C06 NO DRIVES MODEL PE50A-A9 CPU KN15 DRIVE R226E DEC 3000 -? NO LABLE LOOKS NJUST LIKE OTHER DEC 3000 1-DAT DRIVE CD-ROM RZ26-E TWO OTHER UNKNOWN 3 ? ? DRIVES Lyle -- Lyle Bickley Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

21 years, 7 months

3
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Rust on tape heads

by dwight.elvey＠amd.com

Hi If the heads themselves have some rust, you need to polish the heads a little before dragging tapes across it. The rust pits will have sharp edges on them that will damage the tapes. You should use a fine polishing compound, like jewelers rouge or cerium oxide to burnish the edges so they don't do more damage. Dwight >From: "Gooijen H" <GOOI(a)oce.nl> > >I would first check if the rust is actually from the metal of the >head or just "rust" that has come off from an old tape ... that >can probably be removed with a soft cloth. >I am not so sure about using *any* fluid on the head! >I do not have experience in this field, but don't those heads have >a small slit / gap? (like all other magnetic heads) >What will the fluid do when it get in that gap ...? > >- Henk. > > >> -----Original Message----- >> From: cctalk-bounces(a)classiccmp.org >> [mailto:cctalk-bounces@classiccmp.org]On Behalf Of Robert Krten >> Sent: zaterdag 28 augustus 2004 12:40 >> To: cctech(a)classiccmp.org >> Subject: Rust on tape heads >> >> I've noticed a few spots of rust on some TU55 tape heads that >> I have. I'm wondering what I should do about it in the short >> term -- I've had an idea of putting something on the heads >> and then cleaning it off later, like oil or vaseline or... ? >> >> Any suggestions? >> >> Is there anything I can do with the heads later to clean the >> rust off? Are they totally hosed, or will they still work? >> This is on my "todo list" as far as restoration goes, just >> haven't gotten to it yet, but wanted to prevent any further >> damage if possible... >> >> Thanks in advance, >> -RK >> >> [If replying to me personally by email, you'll need to click on >> the URL that's mailed back to you to whitelist yourself.] >> -- >> Robert Krten, PARSE Software Devices +1 613 599 8316. >> Realtime Systems Architecture, Consulting, Books and Training >> at www.parse.com >> Looking for Digital Equipment Corp. PDP-1 through PDP-15 >> minicomputers! >> >

21 years, 7 months

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archiving Heath H8/H89 hard-sectored disks

by dwight.elvey＠amd.com

Hi Dan We have a separate mail group specifically for H8/H89 and also a program archive. We are interested in disk images as well. I have written a bootstrap method of bringing a H8/H89 machine up from scratch with a serial cable and some blank disk. This can also be used as a general disk image transfer program. We would like to get any information on your methods into the archive and also images you may have. Send a message to <majordomo(a)staunch89er.com> with body: subscribe sebhc To get to the mail group. It is a quite group right now but the archives have a lot of good stuff. Dwight >From: "Dan Lanciani" <ddl-cctech(a)danlan.com> > >I've come up with a way to read Heath hard-sectored disks with a 1797-style >controller (with some modifications). I've now archived all of my old disks >with only one unrecoverable error in an unused sector (not bad for media that >is approaching 30 years in age). I do seem to have run through *drives* at >an alarming rate, though I hope that the cleaning disks I have on order will >restore some of them. Is anyone interested in: > >-Technical details (the method should work for many non-standard FM formats)? > >-Having me read any H8 disks? > >-Any distribution images that I might have? > > Dan Lanciani > ddl(a)danlan.*com >

21 years, 7 months

1
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Poly 8813

by dwight.elvey＠amd.com

>From: "Jerry Schneider" <jerry.schneider(a)verizon.net> > >I found an email from you on the net regarding the Polymorphic 8813. > >Do you have any docs for this system? If so, would it be possible to >purchase copies? Or, dupe originals if available? > >Thank you. I look forward to hearing from you soon. > > - jerry Hi Jerry I have a User's Guide and a copy of the Systems Programmers Guide. I have some software as well. I've written a program that handshakes with the Poly 8813's ftp program ( not to be confused with todays ftp ). It can be used to transfer programs/files to and from the Poly 8813. I don't currently have a way to copy entire disk images but if you have a bootable disk with the ftp, you can transfer files ( using my program that requires a PC with DOS ). I have schematics for the CPU and video boards but nothing for the RAM or disk controller cards. Do you have an 5-1/4 drive machine or do you have 8 inch drives? Email me directly and we can talk more. Dwight

21 years, 7 months

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Realistic MPA 35A

by BerndtKrummrich＠t-online.de

Hello, My english is not so good. I hope, you can help me. I have from Ebay in Germany a Realistic MPA 35A. I think he is good for Microphone and for Music. I find of the Backside two Contact for Aux and for Phone Two Input for Microphone. This Realistic is for 1 Speaker, its Mono. Where is a contact for the Speaker? I find many Contacts on the Backside. I have two Speakers 120 Watts 8 Ohm >From the Speaker I have a red line and a black line. Where is the Contact for the Speaker. Thank you, for your Time Berndt

21 years, 7 months

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Interesting Mil/DOS computer site

by jpl15＠panix.com

Found this whilst ruffling about: http://itweb.salisbury.edu/~rafantini/military.htm Interesting to see a car tire parked on top of a laptop.... and the Grids in Olive Drab. Cheers John

21 years, 7 months

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Anyone heard from Joe Rigdon?

by vcf＠siconic.com

Say, I don't believe we've heard from Joe since the hurricane in Florida. I hope he's OK. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

21 years, 7 months

5
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Rust on tape heads

by GOOI＠oce.nl

I would first check if the rust is actually from the metal of the head or just "rust" that has come off from an old tape ... that can probably be removed with a soft cloth. I am not so sure about using *any* fluid on the head! I do not have experience in this field, but don't those heads have a small slit / gap? (like all other magnetic heads) What will the fluid do when it get in that gap ...? - Henk. > -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org]On Behalf Of Robert Krten > Sent: zaterdag 28 augustus 2004 12:40 > To: cctech(a)classiccmp.org > Subject: Rust on tape heads > > I've noticed a few spots of rust on some TU55 tape heads that > I have. I'm wondering what I should do about it in the short > term -- I've had an idea of putting something on the heads > and then cleaning it off later, like oil or vaseline or... ? > > Any suggestions? > > Is there anything I can do with the heads later to clean the > rust off? Are they totally hosed, or will they still work? > This is on my "todo list" as far as restoration goes, just > haven't gotten to it yet, but wanted to prevent any further > damage if possible... > > Thanks in advance, > -RK > > [If replying to me personally by email, you'll need to click on > the URL that's mailed back to you to whitelist yourself.] > -- > Robert Krten, PARSE Software Devices +1 613 599 8316. > Realtime Systems Architecture, Consulting, Books and Training > at www.parse.com > Looking for Digital Equipment Corp. PDP-1 through PDP-15 > minicomputers! >

21 years, 7 months

2
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OT: Submissions for an IT careers book?

by evan947＠yahoo.com

Hi all... I'm putting together a guidebook about IT careers for Vault.com (a jobs and careers site here in New York). I'm writing the majority of the book >from personal experience, but my editors asked me to solicit a few "day in the life" sidebars from people in the field. The idea is that someone such as a student can read the sidebars to get an idea of what you actually DO all day in the role of (fill in your title). I could use some submissions for jobs such as network engineers, SAN/backup administrator, QA engineer, tech writer, product manager, etc. (already have one from the programmer specialty). Basically you'd just write a fictional but realistic hour-by-hour scenario of what your typical day is like. It's up to you whether your name/company name are included. Of course, the benefit to having your name/company name included is the free press and the glory of pointing out your name in print, the next time you're in Barnes & Noble with friends. :) The catch? I need some of these sidebars as soon as humanly possible, in the next couple of days. Thanks in advance to anyone who can help! - Evan (PS -- please reply directly to me, let's NOT make this a discussion thread.)

21 years, 7 months

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DEC VT stuff & HP stuff

by jwest＠classiccmp.org

The VT100 power supply has been spoken for (as have the keyboards). The LA120 has tentatively been spoken for. The next round of offerings will probably be a rather large amount of HP 21XX interface cards. They will be posted here soon as I go through and run diags on each one (so they will all be known good boards). This will take some time as there's about 150 boards I have to go through :\ I'm looking for 12880 cards, 12920/21 mux sets, FAB boards, FEM boards, and 12531 HS terminal cards. Also DG eclipse cards. Still looking for a DG 6031 floppy drive, and HP 264X terminals. Regards, Jay West --- [This E-mail scanned for viruses by Declude Virus]

21 years, 7 months

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Newbridge VIVID ATM Network Kit Available

by kevan＠heydon.org

I have some ATM kit that needs to find a new home. It ideally needs to be picked up from Cambridge UK but I can be flexible. Not sure if this kit has reached the ten year limit yet, but the fact that it's ATM fibre and is full of blinking lights surely makes it interesting to this audience. A couple of quick pictures first: http://www.heydon.org/kevan/pictures/newbridge-small.jpg Same but bigger: http://www.heydon.org/kevan/pictures/newbridge.jpg What you are getting is a complete setup consisting of the central Route Server (really a Sun SS20), a 12 port ATM Workgroup Switch and two 12 port 10/100Mbit ethernet Orange Ridges. All these are connected together with fibre. I have the rack mounting brackets too. It's all working fine and sat purring away, next to me at the moment. Building work starts at home in a few weeks time and it has to be gone by then. -- Kevan

21 years, 7 months

2
1
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Poly 8813

by jerry.schneider＠verizon.net

I found an email from you on the net regarding the Polymorphic 8813. Do you have any docs for this system? If so, would it be possible to purchase copies? Or, dupe originals if available? Thank you. I look forward to hearing from you soon. - jerry

21 years, 7 months

2
1
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Very sweet Altair 8800b setup on Ebay

by wmaddox＠pacbell.net

Except for the screen rot on the terminal... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=4193&item=5119822174… --Bill

21 years, 7 months

1
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TV Show Alert for Aug 30th, 2004 in US

by gmanuel＠gmconsulting.net

Today at 11:00am Eastern on the Discovery Science Channel (just Science Channel now) is a show called BrainChild (listed in my cable listing as Computer Revolution). It is a 2003 documentary about the invention of the computer and covers the evolution to the integrated circuit. It also covers some info about fiber optic cable creation. It was also on at 3:00am today. Kinda neat seeing the Eniac and hearing the programmers and designers talking about it. Sorry about the short response time but I found it channel surfing. Greg Manuel >>> FREE spam killer: http://eliminatespam.com * FREE PopUp Buster+: http://popupbuster.net

21 years, 7 months

1
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ibm xt memory

by rorypoole_1999＠yahoo.com

Do you still have the (1/2 a check box full of XT type memory) and the (IBM XT motherboard, supposed to be last bios revison, and was purchased by me as such. $10) _______________________________ Do you Yahoo!? Win 1 of 4,000 free domain names from Yahoo! Enter now. http://promotions.yahoo.com/goldrush

21 years, 7 months

1
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National Multiplex data cassette tape drive

by wmaddox＠pacbell.net

Years ago, I owned a data cassette drive made by a company called National Multiplex, presumably long defunct. It was obviously a modified audio cassette recorder, but in which the internal electronics had been completely replaced. Unlike the prevailing standard for cassette-based data storage on micros in that day, this drive used saturation recording (NRZI, I believe) instead of a modulated audio carrier. It was a very functional replacement for a paper tape reader/punch, and ran up to 9600 bps using hi-fi grade audio tapes. I would be interested in locating one of these beasts to replicate the setup I had on my IMSAI before I sold the drive years ago. The drive came with schematics, and as far as I remember, the circuitry was rather simple -- a couple of op amps and a few gates. Alternately, if I can locate a copy of the drawings, I may attempt to reproduce the design using a contemporary audio cassette mechanism. Has anyone ever seen one of these? --Bill

21 years, 7 months

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