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

by toresbe＠ifi.uio.no

Yup, I've got one right in front of me. (well, actually slightly to the left, because my keyboard is right in front of me, and between the monitor and the keyboard I have a bunch of harddrives and a Mach 64 display card taken from an OEM Compaq) If you want it I'll be happy to give it up. The IIci chassis now rests in pieces, and the mainboard is wall decoration. (I have a mosaic of broken or useless mobos up over the wall at my summerhouse) Drop me a line if another one says bye-bye. Peace, -Tore

22 years, 10 months

2
1
0 0

Heathkit ET-3400 Manul

by dittman＠dittman.net

I have an ET-3400A and would like to find a manual, preferably and electronic copy that I could ftp or have mailed to me. Does anyone have an electronic copy? If not, does anyone have a paper copy? -- Eric Dittman dittman(a)dittman.net

22 years, 10 months

1
0
0 0

386 Mother Board

by rcabunac＠wi.rr.com

Chris, Do you still have this motherboard? AMD 386 SX-40, AMI Bios, "Cyclone" chipset?, 6- 16 bit ISA slots, 4- 30 pin SIMM slots. This board is smaller than normal boards. It measures 8.5 x 6.75 inches. Let me know. Also check the side of of of the ISA slots to see if it has a sticker with this number. PTA-3B067196 Thanks, Randy

22 years, 10 months

1
0
0 0

DEC Pro 380 Info Request

by chd_1＠nktelco.net

I now have a DEC Professional 380 that was originally a VAX Console. Inspecting it, I find a floppy interface, a Winchester interface, and an RTI interface (used for the VAX I think). The disk is an RD52 with a big piece of red tape that says TOP SECRET. I have lots of questions.... After looking for pinouts, I have attached a NEC Multisync 3D monitor and an LK201 keyboard to the VIDEO 1 port. During the self test I get an error saying a key is stuck on the keyboard. This may indeed be true, I have not tested the keyboard before. It also says hit <RESUME> to continue. The keyboard has no <RESUME> key. I suspect there were various markings for the keycaps. Any suggestion on which key might be <RESUME>? What are the monochrome monitor specifications (horizontal frequency, vertical frequency, etc)? It looks like the NEC 3D can barely get the correct sync. This monitor is a bit old and when it warms up it loses sync. Not sure if this is a problem with the monitor, or I am just stretching its specs too much. A NEC XV17 I tried would not even begin to sync. I read that the printer port is also a console for the Pro. After finding the pinouts, I connected a terminal to the port and a break dropped me into ODT. Is there microPDP-11/83 style firmware in there somewhere that I can use on the PR 1 port or do I have to use the keyboard and video? Using ODT, I can see that there are 512kB of memory. The RTI seems interesting, but I have not seen any pinouts for the 62 pin connector. From what I can find there are two serial ports, a 24 line bi-directional I/O port and an IEEE-488 port. Pretty cool, but useless without a pinout... -chuck

22 years, 10 months

7
8
0 0

PDT-11/150

by classiccmp＠crash.com

Bill Machacek wrote: . > I just rescued a Digital PDT 11/150 ... what have I got? A nice little RT-11 system. It may seem heavy, but the alternative is usually in a BA23 deskside/rack box, and that's heavier. It is almost completely non-expandable as Tony pointed out; it was theoretically available with only a single RX01 floppy drive, and three serial ports, but all the units I've seen (mine or pictures on the 'Net) have both drives and six ports. There's probably *something* other than RT-11 that'll run on it, but I haven't gotten around to finding it yet. There probably isn't enough room on an RX01 for anything like Xinu or a Unix v6 mini-root, let alone enough hardware, but things that could be run on a pdp-11/03 stand a chance. Should be some fun things in the DECUS library. --S.

22 years, 10 months

1
0
0 0

anyone notice this gorgeous piece?

by classiccmp＠crash.com

Jay West wrote: . > That was a nice one and I hope to get one someday. Sorry, meant to post a "seen this" note, but life got in the way. That was a relisted at least once, I saw it the other week and it ended with no bids. What I need is something like the Google search API but for eBay, so I can wrote a nice little 'bot that will keep an eye out for things... --S.

22 years, 10 months

1
0
0 0

Looking for Overland OD3201 Tape unit

by ken＠fraserhouse.com

Trying to find an Overland Data, Inc. OD3201 (or similar) 9-track reel-to-reel unit. It is a reasonably thin, grey unit that stands vertically and has a plexiglas window built in the door. Please reply directly to ken(a)fraserhouse.com including condition and price. Thanks, Ken Campbell

22 years, 10 months

1
0
0 0

Looking for Overland OD3201 Tape unit

by ken＠fraserhouse.com

Trying to find an Overland Data, Inc. OD3201 (or similar model) 9-track reel-to-reel unit. It is a reasonably thin, grey unit that stands vertically and has a plexiglas window built in the door. Please reply directly to ken(a)fraserhouse.com including condition and price. Thanks, Ken Campbell

22 years, 10 months

1
0
0 0

Fw: thought you might want to respond

by geoff＠pkworks.com

Oh yes, the RetroComputing Society of Rhode Island is still very much in business (www.osfn.org/rcs). {As is the Rhode Island Computer Museum (www.osfn.org/ricm).} I don't know why you couldn't get through by e-mail, other than the fact that "Shrimp", the RCS/RI's faithful Sun server, has its good days and its bad days, and it's anyone's bet what today is. And I don't know whether the phone is still there or not, but unless it's a monthly Open House it's a crap shoot as to whether anyone's on-premises to pick it up. I for one don't subscribe to Classic Comp, so this was kindly forwarded to me by Marc Bileau, who is very active in the RCS/RI's activities. He tells me that even non-subscribers can send to cctalk, so here I am. Please respond to me directly, not to the mailing list. So, just what is this item up for auction? I doubt we're bidding on it in any case, as money is a bit tight all around right now. But if it's good we'd be delighted to receive a donation. > > > ----- Original Message ----- > From: <mwb(a)ovay.com> > To: <geoff(a)pkworks.com> > Sent: Tuesday, October 07, 2003 9:52 PM > Subject: thought you might want to respond > > > > I don't know if you read the classic comp mailing list, so I'm sending > this > > anyway. I know Mike doesn't always answer emails in real time :-} > > > > Marc > > > > > > > > > > > > ------------------------------ > > > > Message: 21 > > Date: Mon, 6 Oct 2003 12:47:07 -0700 (PDT) > > From: "O. Sharp" <ohh(a)drizzle.com> > > Subject: RCS/RI Still In Existence? > > To: cctalk(a)classiccmp.org > > Message-ID: <Pine.LNX.4.44.0310061240280.19026-100000(a)drizzle.com> > > Content-Type: TEXT/PLAIN; charset=US-ASCII > > > > > > Does anybody know if the Retrocomputing Society of Rhode Island > > (http://osfn.org/rcs/) is still around? I've sent a couple of e-mails > > their way, and tried their phone number, but not with any luck. > > > > I saw one of the things on their online "wish-list" up for auction on > > eBay, and thought about having a go at getting it for them, but it'd be > > nice to know if they still needed it first. (Not to mention making sure I > > wasn't bidding _against_ them. <g>) > > > > -O.- > > > > > > ------------------------------ > > > > > > > > > > > > Send cctalk mailing list submissions to > > cctalk(a)classiccmp.org > > > > To subscribe or unsubscribe via the World Wide Web, visit > > http://www.classiccmp.org/mailman/listinfo/cctalk > > or, via email, send a message with subject or body 'help' to > > cctalk-request(a)classiccmp.org > > > > You can reach the person managing the list at > > cctalk-owner(a)classiccmp.org > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of cctalk digest..." > > > > > > > > >

22 years, 10 months

1
0
0 0

PDP 11/73 SLU

by pete＠dunnington.u-net.com

On Oct 1, 11:43, Brian Hechinger wrote: > On Wed, Oct 01, 2003 at 10:16:13AM -0600, Kevin Handy wrote: > > > > The CPU card should be almost identical to an 11/83 system. > > Main difference is the speed of the clock, iirc. > > uhm, i thought a /73 was a dual width card and didn't have any serial or > anything on it. am i confused? Yes and no. There is a dual-height version of the 11/73 (KDJ11-A) which carries the processor, MMU, FPA, cache control, etc, but no bootstrap, SLUs, or line-tme clock. It was commonly sold as an OEM product or as an upgrade to 11/23 systems. There is also quad-height version (KDJ11-B), the same board as as the 11/83, but (if sold as an 11/73) it has a 15MHz crystal instead of 18MHz, and would originally have had different bootstrap ROMs. -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

4
5
0 0

AlphaServer 4000/4100

by vance＠neurotica.com

I was perusing some old DEC brochures, and I read that the AlphaServer 4000 can be field upgraded to an AlphaServer 4100. How does one go about doing that? Peace... Sridhar

22 years, 10 months

2
1
0 0

EISA config for Everex STEP DP

by svs＠ropnet.ru

G'day, You posted a request for !EVX0101.CFG on classiccmp. Unfortunately, I don't have one; I'm looking for !EVX0002.CFG myself. So far I haven't found any mirrors of everex.com or an archive of CFG files, but here's a clue: http://groups.google.com/groups?selm=UTC200211161343.gAGDhQI15309.aeb%40smt… I'll be contacting Andries.Brouwer(a)cwi.nl, perhaps he will make his archive available. -- Sergey Svishchev

22 years, 10 months

2
1
0 0

Betr.: Acorn Econet

by e.huininga＠sozawe.groningen.nl

Econet fileservers were called 'Filestores' which came in different 'levels', which is somewhat like a version number. Check http://www.heyrick.co.uk/econet/ for more information. There was an Econet interface card available for PC's, called 'Ecolink'. With this card I believe it was possible to hook an Econet to an Ethernet, and/or to set up a PC as a fileserver. I think it would be easier to set up an A310, A3000 or A3010 as a fileserver though. Another option which I've been working on is adding an Ethernet interface to an BBC, and writing a simple TCP/IP stack so that this BBC can act as an Econet-Ethernet bridge, but this project is still in the design stage :-) Some econet documents can be found here: http://www.retrocomputing-world.com/biblio/computer/acorn/docs.shtml Cheers, Eelco >>> Tony Duell <ard(a)p850ug1.demon.co.uk> 10/05 7:20 >>> Does anyone have any experience with Acorn Econet (Acorn's low-cost, fairly low-speed network)? My newly-acquired Acorn Cambridge Workstation (ACW) has an Econet interface (I am told it's standard on these machines), and I'd like to hook it up to something. Digging in my junk box (well, more like junk room :-)), I've found a couple of Econet clock boxes (one Acorn, one SJ, these supply the data clock for the network), a terminator, various connector boxes, etc. Cabling shouldn't be a real problem either, I assume the right cable is 2 twisted pairs with an overall screen. I believe I need a fileserver (== a machine set up as such). Assume I have Beebs (with Econet interfaces), 6502 and Z80 second processors, A310 (but no backplane, therefore no expansion), A3000 (no expansion either), A3010 (in bits, but probably repairable), a couple of Systems (one with an Exonet interface), and not a lot else. I think I could find the Acorn SASI/SCSI host interface for the Beeb if pushed, and I have a Beeb with the Torch SCSI card and SCSIFS. Oh, and an Acorn Econet bridge, but that's fairly useless at the moment... Any ideas as to what I should use, and where to get the necessary software. Has anyone ever hacked a PC to work as an Econet fileserver? The hardware wouldn't be too bad, I think. Anything else I should be aware of? -tony

22 years, 10 months

3
5
0 0

Morely Electronics Teletext Adapter.

by pete＠dunnington.u-net.com

On Oct 7, 19:12, Tony Duell wrote: > What does the extension ROM add? Apart from auto tuning? I'm not sure. The manual for the extension is on the net at The BBC Lives! but it's a pretty big PDF file :-( -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

1
0
0 0

Morely Electronics Teletext Adapter.

by pete＠dunnington.u-net.com

On Oct 5, 18:24, Tony Duell wrote: > While looking for Econet bits, I found the above-mentioned unit (Morely > Electronics Teletext Adapter). Morley, not Morely :-) > It's clearly a BBC periperal. On the back is Belling-Lee coaxial socket > (standard TV aerial connector), and a piece of 6 way ribbon cable. This > splits, 4 wires go to a 20 pin 2-row IDC header socket (presumably BBC > User Port, the connections would then be +5V, Ground, and 2 lines for I2C > SCL and SDA). The other 2 wires go to a plug to fit the BBC's power > outlet socket, to get 12V. > Does anyone know anything about this unit, and more importantly, anyone > know where I can get the software to use it (it's certainly not > compatable with the Acorn Teletext unit). You need the Advanced Teletext Software ROM, which I've got in my archive. There's also an additional extension ROM. It does neat things like autotuning, and is reputedly rather superior to the Acorn Teletext Adaptor, though not having ever owned a Morley one, I wouldn't really know. Ther'es also some inofrmation on it on The BBC Lives! website. -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

3
3
0 0

Acorn Econet

by pete＠dunnington.u-net.com

On Oct 5, 18:20, Tony Duell wrote: > Does anyone have any experience with Acorn Econet (Acorn's low-cost, > fairly low-speed network)? I used to install Econet systems, and upgrade and repair Beebs with Econet. I must have installed or re-installed a few hundred Econet interfaces. A certain large dealer once tried to save money by farming out BBC Model Bs for Econet upgrade jobs to his local ITeC (a sort of training centre of out-of-work youngsters). An upgrade includes lots of 10K, 100K, and 1M resistors, a handful of capacitors, and a bunch of ICs, and on early BBCs most of the passive components get fitted vertically in very tight spaces; not surprisingly, the majority of those upgrades didn't work. I got to be very good at faultfinding on those things before the dealer finally conceded that it would be considerably cheaper to just get me to fit the upgrades in the first place :-) > Digging in my junk box (well, more like junk room :-)), I've found a > couple of Econet clock boxes (one Acorn, one SJ, these supply the data > clock for the network), a terminator, various connector boxes, etc. > Cabling shouldn't be a real problem either, I assume the right cable is 2 > twisted pairs with an overall screen. Ideally, twisted quad stranded with an overall screen and stranded drain wire, but Cat 3 or better is fine so long as you have the fifth (ground) wire and a half-decent screen. The original Econet in Acorn's Market Hill office in Cambridge ran on telephone cable. You do need the ground connection, though -- two pairs isn't enough on their own. > I believe I need a fileserver (== a machine set up as such). Assume I > have Beebs (with Econet interfaces), 6502 and Z80 second processors, A310 > (but no backplane, therefore no expansion), A3000 (no expansion either), > A3010 (in bits, but probably repairable), a couple of Systems (one with > an Exonet interface), and not a lot else. I think I could find the Acorn > SASI/SCSI host interface for the Beeb if pushed, and I have a Beeb with > the Torch SCSI card and SCSIFS. Oh, and an Acorn Econet bridge, but > that's fairly useless at the moment... There are six Acorn file servers, and some from SJ Research. I don't know much about the SJ ones (except that early ones had some compatibility problems) but the Acorn ones (in date order) are: The original Econet Fileserver -- runs on a System 5, uses 2 x 80-track DS SD floppies, formatted in a unique way. I've not got the software for that, and I've never used it. Level 1 Fileserver -- provides LOAD, SAVE, etc for files, and some utilities such as sending messages, viewing screens, etc, but not much more in the way of file services. Runs on an ordinary Model B with disk^Wdisc interface and normally uses two double-sided 80-track drives (but will work with any drive that supports DFS). Limited to whatever the standard DFS floppies hold (ie subject to the normal DFS file limits). Level 2 Filserver -- runs on a Beeb with a 6502 Second Processor, uses one or two DSSD 80-track drives, same disc format as the System 5 server. Not subject to the DFS number-of-files limits, supports random-access files, etc. Level 3 Fileserver -- runs on a Beeb with Beeb with a 6502 Second Processor, ADFS, and a 10MB or 30MB winchester. The winchester is partitioned, and the Econet Fileserver partitiion has a unique filestructure. Needs a dongle, which is also a TOD clock. Most dongles are now dead (and weren't Y2K compliant) but there's a patch to bypas that. It also came with a modified version of CommunITeL viewdata bulleting board software. Stacking Filestore -- a box that looks like the disc unit from a Master Compact (or a Communicator), with a brown smoked Perspex front flap covering twin 3.5" floppies, basically a revamped Level 3 but able to use floppies or a winchester. The flap is also a control switch; open it to shut down the server, close it to restart. It also includes printer server software. The matching winchester is just a small SCSI drive (yes, real SCSI, not SASI) in a matching box, normally a 3.5" 20MB Rodime drive; you can have up to six IIRC. Level 4 Fileserver -- software application that runs on an Archimedes under RISC OS 2 or later. It really wants an A440 or better, but should just about run on an A310. Uses whatever filing systems/media are available to RISC OS, and can act as an Econet/Ethernet bridge. > Any ideas as to what I should use, and where to get the necessary > software. Has anyone ever hacked a PC to work as an Econet fileserver? > The hardware wouldn't be too bad, I think. Level 1, 2 and 3 fileserver software isn't hard to come by if you know someone who has it (hint: you do :-)) The discs are copyable. Level 3 is only useful if you have a suitable winchester amd copro on a Beeb, and you'll need the installer discs (I forget whether it's one or two) *and* the anti-dongle patch (unless you want to reverse engineer one of my resin-encapsulated dongles -- but be warned, I've been told by Those Who Know Such Things that the necessary chips haven't been available for many years). You might be able to download Level 4 from the net somewhere. I think I have a copy -- but not a very good one. It went through a few iterations! > Has anyone ever hacked a PC to work as an Econet fileserver? > The hardware wouldn't be too bad, I think. Nope. The Ecolink ISA card only works under MS-DOS 3.21 (or some similar version) and an 8086 machine hasn't the oomph to make much of an Econet system. It even needs a (6502 -- what else?) processor on the Ecolink card to handle basic network operations. Ecolink cards are genuinely rare -- I have one, Jules R has one, and I know of only a couple of others. > Anything else I should be aware of? By convention, an Econet address is two octets, the upper octet is network number ("0" means "the local net"), the lower is the station number. On Beebs, Atoms, Systems, you set the station number with molex links; on later machines you set it in the CMOS. On Master Series machines, you need a special utility because it's in a protected memory area. Address 255 is the broadcast address; 0 is invalid (sound familiar?). By convention, the fileserver is station 254, and the printer server is 235. In some versions of the NFS or ANFS software, stations above 128 (? memory check) are privileged and can force certain operations on unpriv'd stations. Normal stations can *PROTECT themselves from various ops except from priv'd stations (operations include read/write memory blocks, jump to an execution address, force a file load/save etc -- remember this was designed for classroom use). There are Econet interfaces for Systems, Atoms, Beebs (A, B, B+), Master Series (including Compact), ABCs/Scientifics (built in as you've discovered), Electrons (from HCCS, not Acorn, though), and all of the Archimedes/RISC PC range. The A/B/B+ interfaces are a bag of components. The System one is a Eurocard, the Atom one is a plug-on module (as is the Electron one). The later Master Series and RISC machines ones are a small module. There are two versions of the module: originally Acorn designed it with full collision-detect circuitry, then someone decided it would work fine without, at least on an Arc where the faster processor could do some extra work. Sadly, that wasn't borne out in real life, so after a while they reverted to the original design with CD. Issue 2 and 3 Beebs have a lot of the components mounted vertically to save space; they also have provision for clock and/or terminators on the BBC board. This is not a good idea; the original terminator design was an active device, and doesn't work if there's no power (and neither does the clock, obviously!). Issue 2/3 also need a few track cut/rewires. Issue 4/7 have the components laid out horizontally (more sensible) and no provision for clock or terminator on board. The speed of the net depends on the length, the longer the slower. Max speed is obtained with a short network and an asymmetric mark-space ratio on the clock. Early Acorn clock boxes use a square wave; later ones, and SJ ones, have variable mark/space. Early terminator boxes (small light+dark grey Veroboxes) match the clock boxes and provide active termination. Later terminators, and SJ terminators, are passive: DIN plugs with a few resistors, and inferior. Arcs and later RISC-based machines can, not surprisingly, handle faster networks (up to about 500kHz clock) than Atoms/Systems/Beebs (250kHz clock). Torchnet runs on the same hardware as Econet, but uses its own nearly-compatible protocols. The Acorn Printer Server is a 2732 sideways ROM; it doesn't do queueing or anything fancy (ie it can only handle one job at a time) but works with most printers, from dot-matrix to laserjet. The XOB advanced version handles queueing, as does a later one from Acorn for RISC OS. If the server isn't too busy, FS and PS can be on the same machine. -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

2
1
0 0

Looking for Overland OD3201 Tape unit

by ken＠fraserhouse.com

Trying to find an Overland Data, Inc. OD3201 (or similar) 9-track reel-to-reel unit. It is a reasonably thin, grey unit that stands vertically and has a plexiglas window built in the door. Please reply directly to ken(a)fraserhouse.com including condition and price. Thanks, Ken Campbell

22 years, 10 months

1
0
0 0

VCF Want: Pertec formatters for Kennedy 9100

by aek＠spies.com

I have used the wrong terminology, forgive me List! I meant the card that goes in a Kennedy drive that attaches to the drive electronics and has headers for the cables that go *to* the formatter card -- What you are looking for is the "Multiple Transport Adapter, Type 4147" which converts the dual 22 pin connectors to the read/write/control connector configuration.

22 years, 10 months

1
0
0 0

DEC Pro 380 Info Request

by peter.mccollum＠hp.com

On an LK201 keyboard, "Resume" is in the top row (like an "F" key on a PC kybd), 7th from the left. Pete -----Original Message----- From: Charles H. Dickman [mailto:chd_1@nktelco.net] Sent: Tuesday, October 07, 2003 10:43 AM To: info-pdp11; cctech(a)classiccmp.org Subject: DEC Pro 380 Info Request I now have a DEC Professional 380 that was originally a VAX Console. Inspecting it, I find a floppy interface, a Winchester interface, and an RTI interface (used for the VAX I think). The disk is an RD52 with a big piece of red tape that says TOP SECRET. I have lots of questions.... After looking for pinouts, I have attached a NEC Multisync 3D monitor and an LK201 keyboard to the VIDEO 1 port. During the self test I get an error saying a key is stuck on the keyboard. This may indeed be true, I have not tested the keyboard before. It also says hit <RESUME> to continue. The keyboard has no <RESUME> key. I suspect there were various markings for the keycaps. Any suggestion on which key might be <RESUME>? What are the monochrome monitor specifications (horizontal frequency, vertical frequency, etc)? It looks like the NEC 3D can barely get the correct sync. This monitor is a bit old and when it warms up it loses sync. Not sure if this is a problem with the monitor, or I am just stretching its specs too much. A NEC XV17 I tried would not even begin to sync. I read that the printer port is also a console for the Pro. After finding the pinouts, I connected a terminal to the port and a break dropped me into ODT. Is there microPDP-11/83 style firmware in there somewhere that I can use on the PR 1 port or do I have to use the keyboard and video? Using ODT, I can see that there are 512kB of memory. The RTI seems interesting, but I have not seen any pinouts for the 62 pin connector. From what I can find there are two serial ports, a 24 line bi-directional I/O port and an IEEE-488 port. Pretty cool, but useless without a pinout... -chuck ---------- To unsubscribe (or subscribe) from (to) this list, send a message to info-pdp11-request(a)village.org, with the first line of the message body being "unsubscribe" or "subscribe", respectively (without the quotes).

22 years, 10 months

1
0
0 0

WHO? (was: RE: Help! need 400k/800k Mac os 6 or 7 diskettes!)

by cb＠mythtech.net

>I'll grab all that stuff tonight, and go through it in the morning >to see what all is there.. probably all their software since, oh, >1992 or so, when they started with Mac's. It will probably all be on 1.4 disks and of no use to Ron. At least not until he gets a Mac with a SuperDrive that can read the larger disks. -chris <http://www.mythtech.net>

22 years, 10 months

1
0
0 0

FA: Hyperion compuer, SUN cards, DEC cards

by rigdonj＠cfl.rr.com

Just finished listing a Hyperion computer and some SUN interface cards (and a Judson magneto!) on E-bay. I will be adding a LOT of DEC cards soon. <http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=rigdonj> Joe

22 years, 10 months

1
0
0 0

Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>The software support went away, but also they stopped making drives >(and controller chips) that can handle the 400K and 800K formats. >Since they used variable motor speed on the 400K, 800K, and Superdrive >(FDHD), they could keep a roughly constant flux density on the track. >But when you try to read or write that on a fixed-speed drive, such >as a 1440K drive in a PC, or any recent Mac floppy drive, the frequency >required to match the flux density of 400K/800K disk format is outside >the range that the drive electronics can reliably handle. Reading can >sometimes be done, but writing is very problematic. That probably explains why my 6500 and 9600 have problems with 800K disks. -chris <http://www.mythtech.net>

22 years, 10 months

1
0
0 0

Looking for Overland OD3201 Tape unit

by ken＠fraserhouse.com

Trying to find an Overland Data, Inc. OD3201 9-track reel-to-reel unit. It is a reasonably thin, grey unit that stands vertically and has a plexiglas window built in the door. Please reply directly to ken(a)fraserhouse.com including condition and price. Thanks, Ken Campbell

22 years, 10 months

1
0
0 0

black paper tape = mylar?

by pete＠dunnington.u-net.com

On Oct 6, 21:12, Ian Primus wrote: > On Monday, October 6, 2003, at 03:28 PM, Pete Turnbull wrote: > > On Oct 6, 8:12, Lyle Bickley wrote: > >> I'd contact the seller and ask them if the tapes are oiled (you can > > smell the > >> oil) - if so, they are not mylar. > > You can often *feel* the oil. By a curious coincidence, I was talking > > to a guy, this morning, who still sells paper tape and used to be > > involved in its manufacture. He told me how it was oiled in bulk, and > > how they used to do it in small batches for special jobs. > That sounds interesting, how is it oiled? I had thought about that > before, and I couldn't imagine just dunking a roll of paper in oil, or > spraying it with oil or something. How oily is paper tape anyway? Commercially, the oil is sort of printed onto the paper. The paper is passed over an oily roller before being wound onto the final reel. The film of oil on the roller is quite thin, and the quantity is controlled by a system of additional rollers between an oil reservoir and the applicator roller; just like the system used for ink on an offset litho machine. That's what I was thinking about replicating, to oil my own tape, because it's much easier to get unoiled tape here. For very small batches, I was told that they sometimes just dunked the 1" wide reels of tape in an oil bath. If it's wound properly (it should be moderately tight, not slack) the reel will soak up oil over a period of a few days, without excess oil remaining between the layers. The trick, I was told, is to know how long to leave it so that the oil penetrates from the edges of the strip right to the centre. I said you can often feel the oil -- I didn't mean there's a film left on the surface. It typically has a slight sheen, and appears slightly translucent. If you slide a strip of oiled tape through your fingers it should feel smooth, but not leave you with oil on your fingers. Think about the amount of oil you'd want to lubricate the mechanism to punch a few yards of tape: not much. To answer Joe's question, the oil is a light machine oil. I'd guess it's about ISO 30, which is about SAE 5, or less. > I don't have any oiled tape, although I need to get some for my ASR33. I > have been using strips of computer paper to test, but I am worried that > the unoiled paper might wear down the punch. I thought about having a > stack of junk fanfold greenbar cut into 1" strips on the big machine in > at work, but since it wouldn't be oiled, I don't know if it would > damage anything. Do you really _need_ oiled tape, or can you get by > without it? It'll work, as you've obviously discovered, but from all acounts will make the punches wear faster. Greenbar is also much thinner than proper tape. Interestingly, I was told (this guy used to work in a place where 20+ people produced tape, full-time) that most European equipment specified unoiled tape, and generally only American-made equipment needed oiled tape. I'm not sure if that's because American equipment needed the extra lubrication, or if it's something to do with dust, maybe oily dust is considered too abrasive to be allowed to work its way into small mechanisms, or maybe Europeans just designed better lubrication systems ;-) Talking of dust (well, nearly), has anyone (preferably in the UK) got a spare chad box for an ASR33? -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

1
0
0 0

Fat (512K) Mac Revival?

by cb＠mythtech.net

>There doesn't seem to be any battery in the back at all. Where do I go >about getting one of those? I haven't cracked the unit open yet but I will >and check the power supply. Right above the power switch on the back, there should be a removable panel. Its about 2 inches tall and about 1/2 inch wide. I thought there was a little picture of a battery on the panel, but since I don't have a 512 I can't verify if there is indeed one on that model. Pop the panel off and have a look underneath. If there is a battery, see if it is any good -chris <http://www.mythtech.net>

22 years, 10 months

2
1
0 0

VCF Want: Pertec formatters for Kennedy 9100

by jpl15＠panix.com

As message header states: I'm looking for one or two Pertec formatter cards for Kennedy 91xx series tape drives - with cables, if possible. Have $$$ for same - will be at VCF looking to trade $ for Stuff. Also, I'm looking for 2 or 3 DEC RL02 drives, one at least in good working shape - with an interconnect cable and terminator. Can pick up in Bay Area.... Cheerz John

22 years, 10 months

2
2
0 0

black paper tape = mylar?

by pete＠dunnington.u-net.com

On Oct 6, 8:12, Lyle Bickley wrote: > I'd contact the seller and ask them if the tapes are oiled (you can smell the > oil) - if so, they are not mylar. (I've used a lot of that black/oiled tape > - btw, mylar tape is typically not black, IMHO and experience) You can often *feel* the oil. By a curious coincidence, I was talking to a guy, this morning, who still sells paper tape and used to be involved in its manufacture. He told me how it was oiled in bulk, and how they used to do it in small batches for special jobs. I now know how to oil my own :-) -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

3
2
0 0

Looking for Overland OD3201 Tape unit

by ken＠fraserhouse.com

Trying to find an Overland Data, Inc. OD3201 9-track reel-to-reel unit. It is a reasonably thin, grey unit that stands vertically and has a plexiglas window built in the door. Please reply directly to ken(a)fraserhouse.com including condition and price. Thanks, Ken Campbell

22 years, 10 months

1
0
0 0

Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>Good point, but the biggest problem with the original iMac was that >there was no way to get your work off the computer if you didn't have >an internet connection or any extra hardware, since they only had CD >readers, not burners. I have never owned an iMac, but I have friends >who have them, and they all waited until the iMac had a CD burner... I didn't say Apple's cost cutting idea was well thought out... just that they did it for cost cutting reasons. :-) -chris <http://www.mythtech.net>

22 years, 10 months

2
1
0 0

memory refresher on PUTR

by jwest＠classiccmp.org

I used to know this, but have forgotten, and now I'm getting ready to dig the software back out... I believe it was a program called PUTR that I used on a PC to read/write 5.25 floppy disks to exchange data with my PDP-11/23 that had an RX50 drive in it. Should the PC drive be a 360k floppy or a 1.2m floppy? Wonder if there is some story as to the history of "disc" vs. "disk" :) HP always used "disc". Jay West --- [This E-mail scanned for viruses by Declude Virus]

22 years, 10 months

5
6
0 0

Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>IIRC, you could no longer use 400k disks as of System 7.6, but you can >still use 800k disks up through System 9, provided of course that you >have a Mac with an internal floppy drive. I can't reliably read or write 800K disks in my PM 6500 with OS 9.0.4. Haven't been able to for a few OS versions. Also can't in my PM 9600. It attempts it, and is sometimes works for reading an 800K disk. It can also on occasion write to 800K disks, but it can never format them. It will attempt a format, it will even complete it without complaint... but the disk will be undreadable in machines running older OS versions. If I format in an older machine, I can then get a few writes to the disk before the data is unreadable in an older machine (and if the disk is freshly formatted, then I can usually get one or two reads as well). So based on personal experience, I just chalk it up that Apple stopped letting you do both 400 and 800 (with 400 being right out) >Why Apple stopped >offering floppy drives, I don't know. Cost cutting. They were trying to get the iMac down to as cheap a build as possible, and they knew that most consumers would have little need for a floppy drive in the long run. So it was a place to shave a few bucks off the manufacturing costs. Alas when they choose to do it, it was still a tad premature, as yes, in the LONG run, most consumers wouldn't need a floppy drive... but until they migrated their entire collection of old disks to something else, then they still needed it (but its a typical catch-22... if Apple left the drive in, no consumer would migrate their stuff in anticipation for the removal of the drive, so the consumer wasn't going to stop needing the drive, until right after the drive was no longer there) -chris <http://www.mythtech.net>

22 years, 10 months

2
1
0 0

Fat (512K) Mac Revival?

by alhartman＠yahoo.com

Are you saying that the battery housing is there, and it's empty? If so... No need to crack the case to check the power supply. The lack of a battery is why your system isn't booting... Here's a webpage about the various batteries... http://www.sover.net/~jams/Classic_Mac_Workshop/battery.html Regards, Al > From: "Andrew Strouse" <kittstr(a)access-4-free.com> > > There doesn't seem to be any battery in the back at > all. Where do I go about getting one of those? I > haven't cracked the unit open yet but I will and > check the power supply. > > Andrew Strouse > ( kittstr(a)access-4-free.com ) __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com

22 years, 10 months

1
0
0 0

27SF512-70

by rigdonj＠cfl.rr.com

Somebody needs to tell this clown that this isn't his private procurement list! Joe At 05:09 PM 10/3/03 -0500, you wrote: >I would like to know if you have any of these chips available. They are >the direct flash replacement for the 27C512 that I'm looking for. > >Thanks >Mehdi Mir >

22 years, 10 months

2
2
0 0

black paper tape = mylar?

by jwest＠classiccmp.org

I was wanting to get some mylar paper tape. There is an auction on Ebay for 6 rolls of "black paper tape"... can one generally assume that black paper tape is mylar and not just paper? The URL is http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2562042672 Can anyone advise if this is likely to be mylar or not? Regards, Jay West --- [This E-mail scanned for viruses by Declude Virus]

22 years, 10 months

9
8
0 0

Posting times

by aek＠spies.com

Anyone else seeing extended times (< 15 minutes or so) before their posts get to the list? -- I'm more concerned that the archive sort by date isn't corrected for local time zone. Since the sort by thread doesn't always work right, I just watch the list from the archive, but now the replies can show up in the list before the original question, depending on when the original message was posted.

22 years, 10 months

1
0
0 0

cctalk Digest, Vol 2, Issue 9

by keith＠saracom.com

Jay, You want a machine with a 1.2 meg floppy diskette drive. You also do not want to use the 1.2 meg floppy diskettes. Instead use the 360K or even better quad density. Putr is by John Wilson. His website is: www.dbit.com FTP isL ftp.dbit.com Max At 12:00 PM 10/6/2003 -0500, you wrote: >Message: 16 >Date: Mon, 6 Oct 2003 09:21:04 -0500 >From: "Jay West" <jwest(a)classiccmp.org> >Subject: memory refresher on PUTR >To: <cctalk(a)classiccmp.org> >Message-ID: <017401c38c15$13c53900$033310ac(a)kwcorp.com> >Content-Type: text/plain; charset="iso-8859-1" > >I used to know this, but have forgotten, and now I'm getting ready to dig >the software back out... > >I believe it was a program called PUTR that I used on a PC to read/write >5.25 floppy disks to exchange data with my PDP-11/23 that had an RX50 drive >in it. Should the PC drive be a 360k floppy or a 1.2m floppy? > >Wonder if there is some story as to the history of "disc" vs. "disk" :) HP >always used "disc". > >Jay West > >---

22 years, 10 months

1
0
0 0

Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>>Apple stopped having the drives read and write 400 and 800 k disks a >>while ago. > >Actually the System does that... I don't remember when though. Well, yes, I didn't mean to imply that it was a drive limit. Just that Apple stopped letting a user read and write 400 and 800 K disks a while ago (I believe you are right and it was OS 8, but I'm not postive). -chris <http://www.mythtech.net>

22 years, 10 months

2
1
0 0

SemiDisk Solid State Disk Emulator

by patrick＠evocative.com

Does anyone have a PDF scan of the manual for a SemiDisk solid-state disk emulator? Please contact me if you do... --Patrick

22 years, 10 months

1
0
0 0

VCF Want: Pertec formatters for Kennedy 9100

by aek＠spies.com

> I'm looking for one or two Pertec formatter > cards for Kennedy 91xx series tape drives - with cables, if possible. 91xx formatters are separate rack mounted boxes (9219) www.spies.com/aek/pdf/kennedy/006-0002-01_9219_formatter.pdf is the manual for the 9219 If you are using these on DEC systems, you may have better luck finding embedded Unibus or Qbus formatters made by Emulex, Plessey, Dilog, etc.

22 years, 10 months

1
0
0 0

Need IIci cache cards

by spectre＠floodgap.com

My indefatigable Macintosh IIci NetBSD server got defatigable and its cache card blew (diagnosis made by the fact that when the cache card was pulled, it suddenly could boot again). Fortunately, I had *one* *more* *card* in stock, but between the several IIcis I have running, I'm now totally out in case this happens again. Anyone going to VCF6 that has a few they could be talked/dealed into parting with? Thanks! -- ---------------------------------- personal: http://www.armory.com/~spectre/ -- Cameron Kaiser, Floodgap Systems Ltd * So. Calif., USA * ckaiser(a)floodgap.com -- "Eight tries. The number is ... seven." ------------------------------------

22 years, 10 months

5
5
0 0

Am I seeing things?

by cb＠mythtech.net

>I filter a lot of these so they never hit the list. But often I let them >through because I feel that is what we are here for.. to be a resource. >Maybe I'm being too lenient? I'm wondering if you can somehow mark the message as one that came from someone off list. I bring this up, because I've been confused by some and wondering if responses should go onlist or off list. If the poster is off list, then responses should go directly to them, or they won't get their response for a few months until the archives have circulated thru google and the likes. just my thoughts, I'm not trying to imply it needs to be followed. Nor trying to start a discussion on the topic. -chris <http://www.mythtech.net>

22 years, 10 months

1
0
0 0

DEC cards available Update

by kd7bcy＠teleport.com

Started to go fast! These are still available: National Semiconductor NS638 - memory card with a 50-pin connector on the front Sigma Information Systems DZV11 clone unknown Emulex - marked TU0210401 M7164 KDA50-Q Q-bus SDI adapter 1 of 2 M7606-AF MicroVAX II CPU M7608-BC not in guide? MicroVAX II RAM M7608-BF I have three of these: M3104 DHV11-A Q 8-line Asynchronous Multiplexor, with DMA These have been spoken for: M7551-CA MSV11-QC Q 4-Mbyte 22-bit parity/CSR MOS RAM M7516-YM DELQA-M Q Qbus to Ethernet Turbo Module, Q22 M8053-MA DMV11 Microprogrammed controller (needs one of M5930-M5931) with DDCMP control ROM (point-to-point or multidrop) Thanks! -JR

22 years, 10 months

1
0
0 0

Intel Programmer IPPS format

by RMaxwell＠atlantissi.com

Dave, your hazy memory is great. You just filled in a critical blank that has made a world of difference. Searching the planet for references to "IPPS" turned up nothing, but "OMF" is still quite nicely documented on the Web. My favorite file-format reference, www.wotsit.org, has a document for OMF, as do some other sites. Armed with this knowledge, I can now look at modifying an old Motorola S-record to Intel Hex converter with a new front end to suck up the OMF records and spit them out in Hex. All the best, Bob Maxwell rmaxwell(a)atlantissi.com Dave Mabry wrote: > Now, as is normal for me, this is hazy, but I think I > remember what you > are talking about. > > Intel used a format they called "object module format" that > had header > information on each block, and several possible blocks. As I recall, > the MCS48 family, due to its limited memory addressibility, used the > same OMF (object module format) as the 8080. > > Naturally, since Intel defined it, all their tools could read > and write > it. IPPS was the name of the software used to read and write EPROMS, > etc, using Intel's iUP-201 programmer. > > All that being said, I think I can help you. If you don't > have anything > that can read and understand Intel's OMF, I do. I have a > working system > that can execute IPPS. There are other utilities in the > Intel operating > system, ISIS-II, that can also do this. I should be able to convert > your OMF file to an Intel HEX format file. Intel HEX is very > common and > most programmers can understand it. It is also block oriented, but > ascii characters rather than pure binary. > > Sorry to be so wordy, but bottom line is this. (into > Technicolor dream > mode) If you send me your OMF file I can convert it to HEX > and send it > back to you. Hope that will help. > > Dave > > Robert Maxwell wrote: > > This will meet the on-topic age requirement, at least... > > > > For programming devices like processors and EPROMS with > an Intel Universal > > Programmer, > > a file format was used, called "IPPS." I need to program > 8749 processors > > from files > > in IPPS format, and have no working Universal Programmer. > > > > The format appears to be a block-oriented binary, with a > file header > > identifying the > > target device, and headers of indeterminate size preceding > sections of > > binary code. > > Nobody I spoke to at Intel recognizes it. > > > > Does anybody remember, or have access to, > documentation/data or (dreaming > > in Technicolor(R)) > > a utility to convert IPPS files into a less-unique format, > say binary or > > Intel Hex? This > > would save me from having to type in hex values from an old > listing to > > regenerate the code.

22 years, 10 months

1
0
0 0

RCS/RI Still In Existence?

by ohh＠drizzle.com

Does anybody know if the Retrocomputing Society of Rhode Island (http://osfn.org/rcs/) is still around? I've sent a couple of e-mails their way, and tried their phone number, but not with any luck. I saw one of the things on their online "wish-list" up for auction on eBay, and thought about having a go at getting it for them, but it'd be nice to know if they still needed it first. (Not to mention making sure I wasn't bidding _against_ them. <g>) -O.-

22 years, 10 months

1
0
0 0

FA: HP 3000 cards and Omnibook Docking Station

by rigdonj＠cfl.rr.com

<http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=rigdonj> Joe

22 years, 10 months

1
0
0 0

memory refresher on PUTR

by pete＠dunnington.u-net.com

On Oct 6, 9:21, Jay West wrote: > I believe it was a program called PUTR that I used on a PC to read/write > 5.25 floppy disks to exchange data with my PDP-11/23 that had an RX50 drive > in it. Should the PC drive be a 360k floppy or a 1.2m floppy? Ideally, neither: 80-track double density. An RX50 is only single-sided (80 tracks, 10 sectors of 512 bytes per track), but obviously a double-sided drive will do, and that includes a "1.2M" drive if it's capable of doing DD as well as HD. > Wonder if there is some story as to the history of "disc" vs. "disk" :) HP > always used "disc". "disc" is from the Greek "discus", and is (or was, until recently) the more commonly accepted English spelling; "disk" is an Americanism which has spread to the UK. Acorn always used "disc" as well. -- Pete Peter Turnbull Network Manager University of York

22 years, 10 months

1
0
0 0

DEC cards available

by kd7bcy＠teleport.com

I got these cards a while back(I think I asked what they were here on the list back in 2001), mostly MicroVAX II cards I think, all Q-bus. I'm mostly interested in getting these out of the way... I have no plans for building or keeping spares for a MicroVAX or anything beside my 11/84. Not sure what they're worth, and keep in mind they are untested. Make an offer plus actual shipping - I'll also consider trades for Unibus cards for my 11/84. Whatever the list doesn't want I'll probably put on eBay(I'll give you guys a week or two for those that don't keep up with their email very well). National Semiconductor NS638 - memory card with a 50-pin connector on the front Sigma Information Systems DZV11 clone unknown Emulex - marked TU0210401 M7551-CA MSV11-QC Q 4-Mbyte 22-bit parity/CSR MOS RAM M7164 KDA50-Q Q-bus SDI adapter 1 of 2 M7606-AF MicroVAX II CPU M7608-BC not in guide? MicroVAX II RAM M7608-BF M7516-YM DELQA-M Q Qbus to Ethernet Turbo Module, Q22 M8053-MA DMV11 Microprogrammed controller (needs one of M5930-M5931) with DDCMP control ROM (point-to-point or multidrop) I have three of these: M3104 DHV11-A Q 8-line Asynchronous Multiplexor, with DMA -- /------------------------------------\ | http://jrollins.tripod.com/ | | KD7BCY kd7bcy(a)teleport.com | \------------------------------------/

22 years, 10 months

1
0
0 0

Mac SE/30 revived! woot!

by cb＠mythtech.net

>Now I go hunt for an SE PDS ethernet card. (Anyone have a spare?) I believe the SE and the SE/30 use a different PDS slot ethernet card. The SE/30 card is compatible with the IIsi, but I do not think it is compatible with the SE. However, that doesn't mean you can just buy an ethernet card for the IIsi and use it in the SE/30. The IIsi also supports NuBus ethernet cards via a PDS to NuBus adaptor card. That style can't be used in the SE/30. So double the cards before you buy yourself the wrong card. (and BTW: I've seen the SE/30 cards on ebay for around $10.00) -chris <http://www.mythtech.net>

22 years, 10 months

3
2
0 0

Used Atari 2600 Game Cartridge goes for over $70

by jrkeys＠concentric.net

Gamer collectors seem to over spend TOO! http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3049474935

22 years, 10 months

6
13
0 0

Garage sale, DEC 3000/500 $50, HSZ40 $25, ...

by gschadow＠regenstrief.org

Am I crazy to sell a DEC 3000/500 server (desk side) for $50? I believe it's got all the RAM it can fit and disk in and lots SCSI plugs out. My HSZ40s go for $25 a piece. My HP9000K400 with 2xDDS2 drives and 30 GB (?) RAID array and HP Terminal all in one rack go for $100. Am I crazy or just fed up about stuff taking space in my garage? If you are in the Indianapolis area and want to get some stuff, go for it as long as supplies last. -Gunther

22 years, 10 months

3
2
0 0

VAXen available.

by cmcmanis＠mcmanis.com

A number of VAXen are available this week from www.auctionbdi.com. I gave them all of my "spares machines" which I cannot store and no one in the Bay Area wanted. The good news is that BDI will ship them to you pretty much anywhere in the country and the minimum bid is $25. The lot to look for has 3 MV3400's (in BA213 cases), one VAX 4000/300 (in a BA440 case) and one MicroVAX II in a pedastal BA23 case. I don't recall how complete they are, I do thing the 4000/300 is complete except for some DSSI plugs which I needed to bring my 3800 on line. Two of the 3400's have the front "door" (one says MicroVAX 3400, one says VAXServer 3400). If you've got a 3400 or 4000/300 there are plenty of parts to "enhance" your system. I believe the 4000/300 has 192MB of memory but can't swear to it) There is also a MicroVAX 3600 in a H9644 rack. This one I've never looked at in depth other than to note that it has a 4 SCSI drives and a tape but a gap where the SCSI controller had been. Given that it couldn't talk to the disks I pretty much ignored it. Finally there are some PC parts with a nice 17" NEC 5fg monitor (including the special NEC VGA cable). The monitor is nice but not an "Energy Saver" (it stays on as long as power is applied, no standby mode) Probably not of interest to this crowd but I thought I would mention it. --Chuck

22 years, 10 months

2
1
0 0

Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>btw I can't seem to get www.mythtech.net... is it up? >it could just be the Nameserver I am stuck with. Its up now, it was up when I tried it. So maybe it was down and fixed itself, or maybe there was a failure elsewhere. Feel free to try again. -chris <http://www.mythtech.net>

22 years, 10 months

1
0
0 0

Mercury delay line memory, revisited

by jfoust＠threedee.com

How to turn the Internet into volatile storage: http://isec.pl/papers/juggling_with_packets.txt - John

22 years, 10 months

1
0
0 0

Betr.: Morely Electronics Teletext Adapter.

by e.huininga＠sozawe.groningen.nl

The users guide can be downloaded here: http://www.retrocomputing-world.com/biblio/computer/acorn/doc/MorleyTeletex… Furthermore you could check http://www.8bs.com/ and The BBC lives (http://www.bbc.nvg.org/ ). The latter should have an archive of ROMs, which almost certainly should have the ROM for your adapter. Cheers, Eelco >>> Tony Duell <ard(a)p850ug1.demon.co.uk> 10/05 7:24 >>> While looking for Econet bits, I found the above-mentioned unit (Morely Electronics Teletext Adapter). It's clearly a BBC periperal. On the back is Belling-Lee coaxial socket (standard TV aerial connector), and a piece of 6 way ribbon cable. This splits, 4 wires go to a 20 pin 2-row IDC header socket (presumably BBC User Port, the connections would then be +5V, Ground, and 2 lines for I2C SCL and SDA). The other 2 wires go to a plug to fit the BBC's power outlet socket, to get 12V. Inside there's a single PCB with a TV tuner module mounted off one edge. The PCB contains a TV IF strip, CITAC (Computer Interface for Tuning And Control) chip (to select the TV channel under computer control), and a standard Teletext chipset (SAA5240 based IIRC). Does anyone know anything about this unit, and more importantly, anyone know where I can get the software to use it (it's certainly not compatable with the Acorn Teletext unit). -tony

22 years, 10 months

1
0
0 0

Want RL02s at VCF

by jpl15＠panix.com

I will be seeking two, maybe three DEC RL02 drives - at least one in good working order - whilst at VCF. [also one interconnect cable and spare terminator]. I have cash to pay for same (if at all 'reasonable'). I will have a 3/4 ton 4X4 full-size pickup truck, so travelling to your Secret Mountain Hide-out to get them will not pose a problem. Will be happy to go anywhere in the Bay Area over next weekend, or to modify my trek home, if it's roughly in the same direction (to Carson City, Nevada). Lemme know. And yes, I posted this on the VCF Bulletin Board, but forgot my damn password, and lost the message trying to find the Magic Formulae. So there. Cheers John

22 years, 10 months

1
0
0 0

HP-85 consumables, part 2.

by netsurfer_x1＠fastmailbox.net

Anyone know how wide the thermal paper is for the HP-85's printer? Is it 3 & 1/8", or is it wider? -- David Vohs netsurfer_x1(a)fastmailbox.net -- http://www.fastmail.fm - A fast, anti-spam email service.

22 years, 10 months

3
2
0 0

Fat (512K) Mac Revival?

by alhartman＠yahoo.com

It could be something as simple as a bad PRAM battery. There's a little door in the upper back, that has a battery in it. Open it and see if there's a battery in there. If it hasn't exploded... You probably can try replacing that as a start. Next would be the Power Supply/Analog board. But, yes... You should be able to buy a replacement cheaper than fixing that unit. Though, you might find buyers for the parts to help fund that. Regards, Al Hartman > From: "Andrew Strouse" <kittstr(a)access-4-free.com> > > The recent discussion about reviving a Mac SE/30 > reminded me that I have a "fat mac" in my closet > collecting dust. I found it after a yard sale a > few years ago. ( I like to go late and see what > finds I can get for nothing because the people just > want the stuff out of their house.) I remember > when I plugged it in, nothing happened. No sounds, > lights, bars, patterns, sad/happy macs, etc. Does > anyone have any suggestions of what to do to > attempt to get it running. Is it worth it? (I'd > like to play with it but could I find another one > that works for less than it will take to fix?) > It came with a large box of disks, and external > drive, mouse and keyboard, so it seemed like a > complete system, except that it doesn't work. > > Thanks in advance. > > Andrew Strouse >( kittstr(a)access-4-free.com ) __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com

22 years, 10 months

2
1
0 0

Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>OOps I already sent it onlist... :^) Yeah, I realized that after I hit send on the message asking for it off list. Oh well, at least I have it. I'll get a set of disks out to you tomorrow (Monday). -chris <http://www.mythtech.net>

22 years, 10 months

2
1
0 0

Help! need 400k/800k Mac os 6 or 7 diskettes!

by cb＠mythtech.net

>I don't have any machine that can write these. > >If anyone can send me just an 800K floppy with the Mac OS6 or OS7 >cd rom drive that'l work too. I have a CD with OS7 (probably) on it. > >I want to get a MAC SE working again. I have scsi CDrom drive and >apples software cdrom. If the SE has 4 MB of ram, you can connect an your SCSI CD ROM drive to the SCSI port on the back, and boot from your OS 7 CD (assuming it is an Apple OS 7 installer and thus a bootable CD). To do so put the CD in the drive, then turn on the Mac and hold the Command-Option-Shift-Delete to force the SE to boot from the external drive. If you can't get that working, let me know, I'll send you a system 6 install set on 800K disks. System 7 doesn't fit on 800K disks so that's right out. Unless you double check that you need 800K disks. Later Mac SE models had 1.4 drives in them (if the Mac is labeled as Mac SE SuperDrive or Mac SE FDHD then it can use 1.4 disks) -chris <http://www.mythtech.net>

22 years, 10 months

3
3
0 0

HP-85 consumerables

by john_a_s2003＠hotmail.com

Hi, I read the earlier messages about DC100A v DC1000 tapes. I was given a DC1000 tape to try and sadly it didn't work in my HP-85. I found the following page which implies the DC1000 requires a stronger magnetic field than DC100A. So it's a bit like typing to use HD floppies in a DD drive. http://www.cybergenetic.ca/ebook/wrh13.htm (BTW these tapes are 0.15" not one eight of an inch). The following firm advertise DC100A, but I haven't bought any from them so don't know if they have any stock: http://www.athana.com/html/minicart.html HTH, John

22 years, 10 months

1
0
0 0

Help! need 400k/800k Mac os 6 or 7 diskettes!

by rhudson＠cnonline.net

Hey anyone? I don't have any machine that can write these. If anyone can send me just an 800K floppy with the Mac OS6 or OS7 cd rom drive that'l work too. I have a CD with OS7 (probably) on it. I want to get a MAC SE working again. I have scsi CDrom drive and apples software cdrom. Thanks! ron.

22 years, 10 months

1
0
0 0

Free TRS-80 Model III

by CCTalk＠catcorner.org

Free TRS-80 Model III. All you have to do is come to Northwest New Jersey to pick it up. It has two disk drives. No sftware. I don't know if it works, but at this price you can't beat it. No trades needed, no cash, just some time. Kelly

22 years, 10 months

1
0
0 0

64 PIN PLCC Socket

by that1address＠hotmail.com

Joe, I saw your posting on classiccmp.org for the 64 pin PLCC socket. We're doing a project involving a PHILLIPS SAA7111A video decoder chip which is 14x14mm size and has 64 pins but have had a difficult time finding a ZIF socket that's compatible with the chip for PCB implementation. I was wondering if you still have the Textool 64 pin PLCC ZIF socket and how much you'd be willing to sell it for or if you don't have it any longer, where could I find a zif socket for the chip we're using. Thanks... Greg Posting: http://www.classiccmp.org/pipermail/cctech/2003-May/014414.html _________________________________________________________________ High-speed Internet access as low as $29.95/month (depending on the local service providers in your area). Click here. https://broadband.msn.com

22 years, 10 months

1
0
0 0

Morely Electronics Teletext Adapter.

by ard＠p850ug1.demon.co.uk

A non-text attachment was scrubbed... Name: not available Type: text Size: 953 bytes Desc: not available Url : http://www.classiccmp.org/pipermail/cctalk/attachments/20031005/940a9403/at…

22 years, 10 months

1
0
0 0

Acorn Econet

by ard＠p850ug1.demon.co.uk

A non-text attachment was scrubbed... Name: not available Type: text Size: 1365 bytes Desc: not available Url : http://www.classiccmp.org/pipermail/cctalk/attachments/20031005/d594f119/at…

22 years, 10 months

1
0
0 0

Available (NL) : Apple Mac shtuff

by waltje＠pdp11.nl

Hiyas, One of my customers finally saw The Light, and will now allow me to free up some of the storage space we have there. Aside from me being quite busy chucking stuff out into the dumpster, there's also a bunch of Apple thingies from their DTP department that can now be dumped. Obviously, I will not get caught playing with fruity "computers" during *my* lifetime, soo.. available are: - Mac II SE - Mac IIcx - Mac something (couldnt read; too dark there) I also know there are several Powermac (what? can we eat that?) boxes up that shelf, just couldnt be bothered climbing up there in the dark, any more details will have to wait till later, when I first grab a lite 'fore going up there. Since shipping fruit internationally can be quite expensive (gotta keep it cool 'n stuff) we'd prefer to have it picked up by local people (meaning, Dutchies) or people silly enough to drive a LONG time for a bag of this fruit.. Cheers, Fred -- Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist Visit the VAXlab Project at http://www.pdp11.nl/VAXlab/ Visit the Archives at http://www.pdp11.nl/ Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Sunnyvale, CA, USA

22 years, 10 months

1
0
0 0

HP-85 consumables.

by netsurfer_x1＠fastmailbox.net

Hi all! I'll be getting an HP-85 before the month is out & I was wondering where I could find a source for consumables (tape cartridges & thermal paper specifically) for this machine. Any info would be more than helpful. -- David Vohs netsurfer_x1(a)fastmailbox.net -- http://www.fastmail.fm - Choose from over 50 domains or use your own

22 years, 10 months

10
15
0 0

Tic Tac Toe Game on Minivac 601

by RKessell＠aol.com

Tony.... This must be your lucky day. I saw your message on the internet. The tic tac toe game is in my Minivac 601 Manual. If you e-mail me your fax number I will send it to you. The copyright on the Manual is 1961 by Scientific Development Corporation, Watertown Mass. Hope this is what you are looking for. Regards, Richard

22 years, 10 months

1
0
0 0

9 track magnetic tape

by bfranchuk＠jetnet.ab.ca

Found while surfing, 9 track tape for sale. http://www.tinaja.com/bargains/sbmisc.asp

22 years, 10 months

3
2
0 0

HP 7906 drive lives again & stuff

by jwest＠classiccmp.org

After suffering a head crash on my "new" 7906, I decided I REALLY should have taken the time to clean the filter and the blower squirrel cage and air ducts better before using it. That was done, then the drive wouldn't seek past load point. So I swapped all the cards in the drive card cage with a "spares set" and now the drive is working wonderfully again, passing all diags. It is SO nice to not rely on a single 7900 drive anymore! Word to the wise - lesson learned - never skimp on dissassembly/cleanup of an old style 14" drive. Take the time to get every last piece of dust & debris out! Over the next few weeks I will be cleaning, refurbing, and testing all the other 7906 drives I have. Once I get all working that can be made to work... I will have some known working 7906 drives available for trade, as well as some 13037 controller boxes. Might not have spares of the 13037 pca that goes in the host though. If anyone is interested, let me know. Keep in mind these drives are somewhere in the neighborhood of 200 pounds each. I may get my 7905's working too but not sure I want to give those up just yet. Also - the only way I found to clean the squirrel cage blower was to take it out and clean each fan blade by hand and with a toothbrush. The very fine dust that makes it past the secondary filter cakes on these blades and is very hard to scrub off - it's like concrete. Does anyone have any ideas here? I was thinking of soaking the blower in something to loosen the dirt, but it's unfinished metal and might rust. Any thoughts? Regards, Jay West --- [This E-mail scanned for viruses by Declude Virus]

22 years, 10 months

5
4
0 0

Strange Qbus cards: Data Systems Design and Marconi

by TRASH3＠splab.cas.neu.edu

The DSD 880 Qbus subsystem used two different cards, the 8832 and the 8836. The connector near the handle is 26 pins. For the 8836, the 16Mhz crystal is in location G9, with the model number of the board on the edge above that, for instance 808836-05 rev K. There are socketed 24 pin dips in row e, and headers for programming in D4 and F5. There isn't really any special software for basic use, but if you want the double sided use of the floppies, then you have to either use their drivers, or patch your own. The same goes for utilizing more than the 2-RL02 emulation feature, you have to patch for more logical units. The board has a bootstrap for either the floppy or the hard drive. I could look up what is in the 8832, but it is probably pretty close. Also, the dual height board for the floppy-only DSD440 subsystem is similar, but I have the board for that at work. I still use a couple of the DSD880s. The system came with a diagnostic floppy which complemented the front panel, but I haven't used it for a long time. We used to use the DSD880 along with a VT103 and 11/23 in test equipment that a company I previously worked for sold. Hope that helps, let me know if you (or somebody else) needs/wants more info on the 880 series. Joe Heck, K1LBG

22 years, 10 months

2
1
0 0

9 track magnetic tape

by cb＠mythtech.net

> Don should stick to writing 'Cookbooks' etc... $7 for a 7" reel??? I >don't think so... O, I see: $50 for ten - plus shipping from Arizona. And to think, I'm asking $10 OBO for 24 of them ($18.00 counting shipping) -chris <http://www.mythtech.net>

22 years, 10 months

1
0
0 0

HP 7906 drive lives again & stuff

by freddyboomboom＠comcast.net

Sorry I don't have any clue to help you on the squirrel cage. But the one thing I wanted to mention to you was to disconnect the solenoid that controls the heads moving out when testing the disk packs. We had a case where a bunch of disk packs were stored in a hot muggy environment for about 9 months or so, and warped on us. When spun up, the disk will make quite the shrill noise indicating it's warped, and if you don't disconnect the solenoid, the drive will crash all over again. I haven't worked on one of those drives in about 10 years... TTFN Andrew

22 years, 10 months

1
0
0 0

Ref needed for PCjr ROM cartridge Kit

by nampcjr＠yahoo.com

I obtained a nice supply of PCjr ROM cartridge Kits from Integrity Software. The carts were in a box in the corner of their warehouse, and was all they had left of their past enterprise with them. I looked in a Nov 1988 issue of the Eugene PCjr Club Newsletter and there is mention of the cartridge being used for backup. One thing missing from my shipment, though, were the docs needed for the soldering to change the settings on the physical PCB after putting on an EPROM. The title of the doc was "PCjr ROM Cartridge Kit Technical Reference Manual" and had a file name of RC-TECH.REF . If anyone happens to have this, write reply so I can get these puppies working!! Much appreciation! Brian --------------------------------- Do you Yahoo!? The New Yahoo! Shopping - with improved product search

22 years, 10 months

1
0
0 0

Need 307.2 kHz crystals

by swtpc6800＠comcast.net

I am looking for a supply of 307.2 kHz crystals to restore some TV Typewriters. I need 2 crystals and someone else needs one or two. I have not been able to locate any. I can get them made at International Crystal Manufacturing (ICM) for about $55 each with a 6 week lead time. http://www.icmfg.com/crystal_hc51u.html I would like to find some at a better price. I can make a small PCB with a 1.8432 MHz oscillator and a divide by 6 IC. This would cost about $75 total for 6 items, but I would like to find a crystal. I am adding the baud rate option to the CT-S serial interface, the default was a fixed 110 baud. http://www.swtpc.com/mholley/CT_1024/CT1024_Index.htm Michael Holley www.swtpc.com/mholley

22 years, 10 months

3
2
0 0

sanyo lat-200a.

by trash_tmp＠poczta.onet.pl

not sure if it's on-topic here, but anyway... i have an ISA board marked 'Sanyo LAT-200A'. it contains amd286 cpu, couple of headland chips, four SIMM sockets, and two (even/odd) empty bios sockets. does anybody know what it is, where to find bios images and how to use it?

22 years, 10 months

5
9
0 0

Sv: ASR33 Teletype interfacing

by nico＠farumdata.dk

>I have been attempting to get my ASR33 teletype connected to something >and communicating, but so far I have not been successful. I have built >the interface here : You'd probably better off in a ham related group. For them, it is a very easy thing Nico (OZ1BMC)

22 years, 10 months

3
3
0 0

Original IBM PC, Apple Macintosh cube, interest?

by gunther＠aurora.regenstrief.org

Well, I had at least 4 people asking me individually what the Max cubes go for these days. And I do not know the answer. I could dig them out somewhere (that is, last week I could, now it may be too late ... but I might find one again.) Interesting, noone wanted the original IBM PC, even though it probably has a "Color Graphics Adapter" (woa! with 40 characters per line!) and the Mac was just B/W right? So, what would people pay for a Mac or an original PC? -Gunther

22 years, 10 months

3
2
0 0

HP-85 Tape source

by rhahm＠nycap.rr.com

Here is a source for new tapes. They cost about $20 each. If anyone has a better source let me know. http://www.athana.com/html/minicart.html

22 years, 10 months

2
1
0 0

hp terminal pictures?

by jwest＠classiccmp.org

I'm looking for a particular HP terminal. Don't know the model, but I know what it looks like. I know it is a 2600 series terminal, something like a 2621, 2622, 2623, 2624, 2627, 2640, 2644, 2645... but not sure which one. I'm not having any luck googling for pictures of HP terminals so I can find the one I'm looking for. Anyone know where there's pics? Jay West

22 years, 10 months

5
4
0 0

PDT 11/150

by bmachacek＠pcisys.net

Hi All: I just rescued a Digital PDT 11/150 from going to the scarp yard. Now that I have it, what have I got? I also got a number of 8" disks and a VT100. Both units are very heavy units. I am not a DEC person, but I figured these were pretty old units and I just couldn't stand the thought of them going to the trash heap. Thanks Bill Machacek

22 years, 10 months

6
6
0 0

Found the HP 41CV

by jrkeys＠concentric.net

Yesterday I went back to the thrift were I got the manuals for a hp 41CV and under the front counter there was the 41CV in it's carrying case. It was missing the battery so I got it for $2.99.

22 years, 10 months

2
1
0 0

Looking for DEC DLV11J cab kits

by waltje＠pdp11.nl

Hiyas, Looking for the cab kits for the DLV11J (4-port serial) cards, so I can set up a small LSI-11 based system. I already have a small Q/Q backplane (thx, Luc !) and will hook up a nice, small switching PSU to it... together with a cabkit and general CPU cabkit panel, this will make a nice "this is a small PDP-11 system" demo. (especially if I can find the guy who did the Qbus IDE disk driver card, as I have plenty 2G 2.5" IDE notebook disks to glue to such cards :) Cheers, Fred -- Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist Visit the VAXlab Project at http://www.pdp11.nl/VAXlab/ Visit the Archives at http://www.pdp11.nl/ Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Sunnyvale, CA, USA

22 years, 10 months

3
2
0 0

Configuring a CMD CQD-220/TM

by pat＠purdueriots.com

I've got a CMD CQD-220/TM that I'm trying to get set up. I've placed it into a VAXstation 3200, and it shows up when I do a 'show qbus' and 'show dev' at the SRM prompt. At some point I was able to find a list of jumper settings on the board, and instructions to access the config menus on the board via the SRM console, but alas, no more. Does anyone have configuration info for this board? -- Purdue University ITAP/RCS Information Technology at Purdue Research Computing and Storage http://www.itap.purdue.edu/rcs/

22 years, 10 months

1
0
0 0

eagle computer ?

by JWDWRD＠aol.com

If you have any questions about the true story- I would be more than happy to help- after all- he was my father-and yes, I can prove it if necessary as so many people love to doubt that! Jennifer Barnhart-Woodward (for the record, he died June 8th 1983)

22 years, 10 months

1
0
0 0

Original IBM PC, Apple Macintosh cube, interest?

by cb＠mythtech.net

>Well, I had at least 4 people asking me individually what the Max >cubes go for these days. And I do not know the answer. If you are talking about the original Mac (the 128k Mac), then I believe they are pushing the $100 mark if they are complete with keyboard and mouse. Software, manuals, and guided tour audio tapes will push the price higher. I'm not a pricing expert, that just seems to be what I've seen them hover around on ebay and other trading lists. Of course, sometimes they go much lower... I picked on up not long ago for $25 shipped to me. I only bought it because it was offered on a list for a few months and no one wanted to buy it at all, and the owner was threatening to throw it out. -chris <http://www.mythtech.net>

22 years, 10 months

1
0
0 0

Original IBM PC, Apple Macintosh cube, interest?

by cb＠mythtech.net

>Hi, I keep seeing original IBM PCs and Apple Macintosh cubes and >although it's tempting to snatch one for myself this small stuff >isn't really my collector's specialty and I have not enogh room >anyway. But thought that may be some people here think it's >interesting enough to be saved. Since this stuff is shippable >and if there is real big interest I might go through the hassle >and pick such things up ship them. If you are talking about the G4 Cube, then I would want one if the price is right. Are you talking about those, or are you refering to the old classic Macs that have the built in 9 inch black and white screen? (the old Macs would be more the era of the IBM PC) -chris <http://www.mythtech.net>

22 years, 10 months

1
0
0 0

Original IBM PC, Apple Macintosh cube, interest?

by gunther＠aurora.regenstrief.org

Hi, I keep seeing original IBM PCs and Apple Macintosh cubes and although it's tempting to snatch one for myself this small stuff isn't really my collector's specialty and I have not enogh room anyway. But thought that may be some people here think it's interesting enough to be saved. Since this stuff is shippable and if there is real big interest I might go through the hassle and pick such things up ship them. regards, -Gunther

22 years, 10 months

2
1
0 0

ASR33 Teletype interfacing

by ian_primus＠yahoo.com

I have been attempting to get my ASR33 teletype connected to something and communicating, but so far I have not been successful. I have built the interface here : http://www.daedalus.co.nz/~don/computing/20mahack.html , but it didn't seem to work at all. I connected the teletype to a PC clone running Linux. I set the baud rate to 110 and tested it with a DEC VT100 set to 110 first, to make sure that the PC was communicating over the serial port properly. Then, I plugged in the teletype in place of the terminal with the little kludged adapter, crossed my fingers and turned to knob to the left. The teletype just rattled, not printing anything, and nothing from the keyboard printed either. Then, I turned the knob to the right. The teletype works fine, just as it had before. I can type on the paper, punch tape, etc. Before, when I was just testing the teletype without connecting it to anything, I got the exact same results - with the knob to the left, it just rattles, almost like "Break" is held down. When the knob is turned to the right, it works like a very heavy, loud, electric typewriter, and I can punch tape. On my teletype, the knob isn't labeled, but I am assuming that the knob must be Line/Off/Local. Does anyone have any ideas on how I can get this to talk to something? I don't know a lot about teletypes, but I downloaded the wiring diagrams from pdp8.net, and have been trying to figure it out. I think I am connecting it to the correct terminals on the barrier strip, based on what the wiring diagrams say, but then again, I might have something wrong. One problem is that I don't know what the Teletype is _supposed_ to do. I have never seen one operational, so I don't know if the constant rattleing if not connected is normal or not. There might be something wrong with it that I don't know, but chances are, it's just something I am doing wrong. I got suggestions to try using an old Apple Serial card, or an original IBM XT card to connect the teletype to, but I have neither. I have several Super Serial Card II's, as well as several early clone XT serial cards, but I don't think that they will work. At this point, I don't really care what I connect the teletype to, I would just like to get it to do something, and verify that it works. Eventually, I would like to build an RS232 adapter that would allow me to use the teletype on PC clone hardware, Pr1me hardware, whatever. I understand that the teletype uses a 20mA current loop, but I'm afraid that I don't really know anything about current loop technology. Anyone have some schematics for a true 20mA to RS232 adapter? Something tells me that this little kludge I found on the 'net probably isn't the best or most reliable way to do this. Any help would be greatly appreciated. Thanks! Ian Primus ian_primus(a)yahoo.com

22 years, 10 months

3
2
0 0

DEC DE450-CA Network cards

by r_a_feldman＠hotmail.com

I came across three DEC Etherworks Turbo PCI 10 Combo cards (DE450-CA) (vintage 1995, so not quite OT) with manuals and software. Free for postage (one or all) from Chicago. Reply to r_a_feldman(a)hotmail.com. _________________________________________________________________ Share your photos without swamping your Inbox. Get Hotmail Extra Storage today! http://join.msn.com/?PAGE=features/es

22 years, 10 months

1
0
0 0

Strange Qbus cards: Data Systems Design and Marconi

by waltje＠pdp11.nl

Hiyas, One of the results of today's 400mi drive is a box of Qbus cards that once were in custom PDP-11 based systems in use at various locations at Marconi. Most are the usual suspects found in such systems, but there's also a bunch of weird ones: - two Data Systems Design cards.. half-height, some RAM, some PROMs and a fair bit of logic. One 16Mhz xtal. One connector (28 pins or so) - a bunch of what look to be custom-made boards, with the Marconi label and typing. M-12 and such. Does anyone know more about these? Cheers, Fred -- Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist Visit the VAXlab Project at http://www.pdp11.nl/VAXlab/ Visit the Archives at http://www.pdp11.nl/ Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Sunnyvale, CA, USA

22 years, 10 months

4
4
0 0

Help? AMI S6800 computer/Flex

by rigdonj＠cfl.rr.com

Several weeks ago I picked up an early 6800 based computer that came from an original member of the Home Brew Computer Club. The computer is based on S6800 prototyping boards that were purchased as part of a group purchase through the HBCC. I just finished posting a webpage about the computer and what little I know about it along with pictures of chassis and all the cards. Please take a look and let me know if you can shed any light on the computer or it's history or the group purchase. BTW this computer ran Flex and I did get one disk with it containing Flex. <http://www.classiccmp.org/hp/ami/ami.htm> Joe

22 years, 10 months

1
0
0 0

27SF512-70

by Mehdi.Mir＠bakerhughes.com

I would like to know if you have any of these chips available. They are the direct flash replacement for the 27C512 that I'm looking for. Thanks Mehdi Mir

22 years, 10 months

1
0
0 0

29F512 flash memory

by Mehdi.Mir＠bakerhughes.com

I came across your website and read that you have 29F512 chips. Are these 28 pin DIP and will they replace the 27C512 eprom? Also if they are compatible are you able to sell me a few pieces. Thanks Mehdi Mir

22 years, 10 months

1
0
0 0

Key needed for Altair 8800b

by jrkeys＠concentric.net

Does anyone have an extra key or know a source for the front panel for the Altair Turnkey computer? Thanks in advance

22 years, 10 months

4
4
0 0

PDP 11/83 Clock Error

by cmcnabb＠4mcnabb.net

Well, I seem to have gotten my power supply straightened out. It wasn't the switch after all, but the power supply itself. A different problem has now manifested itself. On power on I am getting this on the console: Error 61 M8190 Clock Error It then spits out the contents of various registers and asks if I want to run the test again. I couldn't find this particular error via the normal search engines. Does any have any ideas as to what the problem may be and how to correct it? -- Christopher McNabb <cmcnabb(a)4mcnabb.net> The McNabb Family

22 years, 10 months

8
11
0 0

What terminal to use on Altair 8800b

by jrkeys＠concentric.net

Anyone a good suggestion on a terminal that I can hook up to the Altair Turnkey 8800b? Thanks in advance

22 years, 10 months

2
1
0 0

Visual Commuter LCD

by paulha＠sonic.net

Martin, I have a working old Commuter as well, with the LCD screen. Well, at least it worked the last time I checked, some years back. I can check again and if so, I'd be happy to sell you the whole thing if you wish, for some small price. Shipping will probably be the bigger cost. Assuming you haven't already found an LCD screen or moved on to another project. Let me know, Paul Haase San Rafael, CA I have a Visual Commuter laptop which I purchased new and still works. It's stored securely in a closet. Unfortunately, I didn't purchased a LCD display for it. Would you by chance know where I may purchased an LCD?

22 years, 10 months

1
0
0 0

Intel Programmer IPPS format

by RMaxwell＠atlantissi.com

This will meet the on-topic age requirement, at least... For programming devices like processors and EPROMS with an Intel Universal Programmer, a file format was used, called "IPPS." I need to program 8749 processors >from files in IPPS format, and have no working Universal Programmer. The format appears to be a block-oriented binary, with a file header identifying the target device, and headers of indeterminate size preceding sections of binary code. Nobody I spoke to at Intel recognizes it. Does anybody remember, or have access to, documentation/data or (dreaming in Technicolor(R)) a utility to convert IPPS files into a less-unique format, say binary or Intel Hex? This would save me from having to type in hex values from an old listing to regenerate the code. Help! Bob Maxwell Tel: (905) 792-1981 x313 rmaxwell(a)atlantissi.com

22 years, 10 months

2
1
0 0

m4 data tape drive board sought?

by jwest＠classiccmp.org

heheheheeee I just have to ask, but I bet it's not around.... Anyone have the 800bpi NRZI option board for an M4 data tape drive? Jay West --- [This E-mail scanned for viruses by Declude Virus]

22 years, 10 months

2
1
0 0

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb