test-drb

test-drb@ccmp.vtda.org

101090 discussions

by brianlanning＠gmail.com

I picked up one of these cases not too long ago: http://cgi.ebay.com/Vintage-Magna-External-Drive-Case-and-Power-Supply-/150… Could someone give me the scoop on the ports on the back? One looks like a typical db-25 scsi. What's the other one, the one with three rows of pins? Is this another type of scsi port? brian

15 years, 5 months

ANN: DiscFerret: Final pricelist, orders OPEN!

by classiccmp＠philpem.me.uk

Hi guys, (If you previously emailed me about the DiscFerret, you'll already have received a copy of this message... in which case, apologies for the duplication...) I now have a final price list for the DiscFerret, after having spent the week arguing with suppliers over leadtimes, MOQs and prices. I've given up on this process, and have instead adopted the highly scientific method of "order the blasted things from DigiKey." This leaves me with the following price list: Bare board: ?22.50 With TPS75003 mounted: ?27.50 PCB + tested PSU + PIC soldered/programmed: ?49 Fully assembled and tested PCB: ?129 Power supply (*) ?27.50 Postage to the USA for a single unit will be ?7.50 for normal airmail, or ?12.50 for an insured and tracked service. (*) The power supply is a PowerPax 12V 3.8A "soap on a rope" type switch-mode PSU. It can power the DiscFerret, and a disc drive with a power requirement of 5V 1.5A and 12V 1.5A. The fairly high price is due to its weight: a 36W PSU is not a light beast, even in switch-mode form! You will need to supply a suitable mains input lead (figure-eight tape-player power lead; available from most electrical retailers). Cables ====== By default, the DiscFerret includes a 40-to-34-pin IDC cable for a 3.5in disc drive, and a power cable terminated in a Berg connector (the type used for 3.5in disc drives). If you need a different cable (e.g. for a 5.25in drive or both 3.5 and 5.25), ask me for a quote. I'm quite happy about getting the price down to ?129. It's taken days of futzing through the Farnell catalogue to find suitable parts at decent price points (curiously some of the name-brand parts are cheaper than Farnell's Multicomp own-brand parts), but I finally got there in the end. So what now? ============ Well, you guys let me know what your final orders are. I have four Revision 0I06 (September 2010) boards and the six 0J28 (October 2010) boards from Gold Phoenix. There are a few rules as to allocation: - If you're ordering a bare board or a board with some (but not all) parts pre-mounted, you'll get a Rev 0J28 because these are easier to solder (immersion silver plated finish). - If you order a ready-built unit, you'll get a random choice between 0I06 and 0J28. There is no software-detectable difference between 0I06 and 0J28. The main difference is that 0J28 adds pads for a USB current limiting resistor, which is added via an ECO modification ("greenwire fix") on 0I06. 0J28 needs a greenwire due to a mistake in power routing, but does not require any track cuts (unlike 0I06). If you order a built-and-tested unit, rest assured that you will receive a board which has been updated to the latest ECO level at the time of manufacture. How to order ============ 1) Send me an email with a list of what you want to order, including quantities. 2) I'll send you a PayPal invoice for the total. If you're in the UK or Europe and would prefer to pay by BACS or SWIFT transfer, please let me know and I'll send you the relevant details. The payment must be in British Pounds Sterling, *NOT* Euros (my bank doesn't allow incoming transfers in anything other than GBP). Other payment methods may be a possibility -- ask me, I don't bite :) 3) When you pay the invoice, select "Include shipping address", and enter your desired address. This will need to be a Confirmed address. If you're paying by BACS or SWIFT, email me your name and address. I'm going to be assembling a couple of boards tomorrow as a time-trial. Assuming all goes to plan, the first units should be shipping towards the end of next week. I'd like to thank everyone on Classiccmp, VCForums, and so on for their assistance, comments, criticisms, sharing of expertise, support and so on. Seriously, you guys rock. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 5 months

Punched cards - which paper/cardboard?

by hachti＠hachti.de

Hi everyone, I'm thinking about making punched cards. I could need some information about the material used for them. Precise information about tolerances, specifications, references to more information, and so on would be quite helpful. Best wishes, Philipp -- http://www.hachti.de

15 years, 5 months

Tangential to Topic: Old Chip Programmers Work w/ || Port in Docking Station?

by trag＠io.com

I have a Needham EMP-30 chip programmer. I've been keeping an old Pentium (mumble) computer around to drive it (vaguely on-topic since it's definitely more than 10 years old). It has a parallel port interface. I would like to replace the ancient behemoth computer with a notebook to save space. I would also like to buy a modernish laptop to run things like FPGA and Microcontroller development/interface systems. I'd like them to be the same laptop, so right there I'm looking at USB and parallel port on the same notebook. Looking around, that does not appear to be available in new products. Ordinarily, I don't shy away from used equipment (who does, on this list?), but for notebooks, with their breakage issues and such, I would prefer to buy new. Further shopping revealed that Dell sells a Legacy Port Expander which works with some of their current notebooks and provides serial and parallel ports. And I think I've read somewhere while searching that the Needham software will work with Windows XP (could be mistaken, need to search again). Do any of you know if chip programmers (the EMP-30 specifically) work okay with the parallel ports in port expanders? How about the Cardbus (or whatever is replacing it) parallel port cards? Alternatively, anyone go through this exercise already and pick out what seemed like the ideal notebook model with USB and parallel ports. I might consider a used model if someone has a strong recommendation. Thank you for any discussion, Jeff Walther

15 years, 5 months

DiscFerret PCBs for sale

by classiccmp＠philpem.me.uk

Hi guys, I've got a batch of DiscFerret PCBs for sale. These are the first-cut boards, and work fine but for one requirement: you need to cut a track and install a 160k to 220k resistor over the break. C6 is missing the "+" polarity marker, though this is on the printed component layout (somehow it got missed off the silkscreen print). I'm happy that the design works, and any parts you need should be available from Farnell or DigiKey (or Mouser, but you'll need to get the FPGA from DigiKey). Soldering can be done with nothing more complex than a decent soldering iron, solder, desolder wick and a good magnifier. A PCB holder or Panavise and some paste flux would be very useful, but not essential. These boards are RoHS-compliant, two copper layers on a 1.6mm FR4 substrate. All vias and holes are fully plated-through, with a green solder mask and a white component layout print on the top side. They were manufactured by EuroCircuits BVBA (www.eurocircuits.com), and have been checked visually for damage or manufacturing issues. Cost is ?45 per board, plus shipping (which is likely to be very little). This does not include any parts, just the bare board, a printed component layout, a copy of the Bill of Materials and a copy of the Service Note which covers the track cut and . There are some extra options available: - TPS75003 chip pre-mounted. Add ?5 to the total. This includes a full electrical test (shorts and opens). - PIC microcontroller soldered down and pre-programmed. Add ?5. This includes programming the bootloader into the PIC, and means you won't need a PIC programmer to bootstrap the DiscFerret. - Both of the above -- add ?9. - Fully assembled and tested power supply section -- add ?25 - Fully assembled and tested PSU, with PIC pre-soldered and programmed: add ?29. Any parts I install will be soldered down with Multicore RP15 solder paste. This is a 96SC-alloy (95.5% tin, 3.8% silver, 0.7% copper) RoHS-compliant lead-free solder paste with a No-Clean flux. If you decide to remove a component and replace it with 60:40 SnPb solder, then desolder the existing part, remove all solder with desolder wick (Chemtronics Soder-Wick works nicely for this), then re-tin the pads with 60:40 solder, remove that solder, then install the part. If you'd like any other components supplying or pre-mounting, please email and ask for a quote. I'm not going to start doing fully-assembled boards until I get the next batch of boards in stock (hopefully this Friday). Basically, the production boards will be from the "0J28" batch, which has a number of part placement differences. These differences render the solder paste stencil for the 0J28 useless for the 0I06... No paste mask, no mass production. Making a DiscFerret using hand soldering techniques takes nearly a day -- with solder paste and a reflow oven, a couple of hours at most. There is no firmware difference between 0I06 and 0J28 boards: you can use the same FPGA microcode and PIC firmware; the only differences are in component placement (0J28 was redesigned to meet the Gold Phoenix 7mil design rules) and that 0J28 includes pads for the 160k resistor. To order, send me an email (this address is fine, or change the user-part from 'classiccmp' to 'philpem' to get my main mailbox) with: - Your name and address (I'll assume the From and Reply-To are set correctly in your mail client!) - What exactly you want to order I'll send a PayPal invoice for the total amount, and will send the boards out when the invoice has been paid. I usually assemble boards during the week, and post them out on Saturdays. For UK customers I'd advise going with Special Delivery due to the cost, and "Airsure" for international orders. If, however, you'd prefer I send them First Class or Airmail, I'll do that as long as you agree not to come after me for a refund if they get lost in the post...! (First Class and Airmail are uninsured) Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 5 months

Ugh, I think I am going to be sick...

by lynchaj＠yahoo.com

Check out ebay auction 190467284114 and you can clearly see there are DIP64 MC68000 CPUs going to the scrapper bin. This is painful to see especially knowing the S-100 68K CPU board is entering build and test. I know builders will be looking for these parts soon. The DIP64 68000 CPUs are still available though this seems like such a waste to scrap classic ICs. I think it is tragic. Andrew Lynch

15 years, 5 months

Christies of london to auction apple 1 for £150 ,000

by jfoust＠threedee.com

At 04:54 PM 11/12/2010, William Donzelli wrote: >You have no clue about the people you are dealing with. I'm sure they're regular folks who have their pants put on two legs at a time, just like the rest of us. - John

15 years, 5 months

Offering Digital paper tape punch and reader - PC04

by hachti＠hachti.de

Hi, see the following pictures: http://picasaweb.google.com/iraeus/DECPC04 There you see a modestly rare and completely working DEC PC04 paper tape reader and punch. The unit is complete with cables. Needs 110V power supply. The frame that goes into the rack *might* be there ass well. I checked and used the machine for a while. Did not find any problems. Could be cleaner - that job is left for the next owner. It's not my unit. But I can let it go for reasonable money. Shipping anywhere. If you're interested, email me your offer. If I don't get reasonable offers the machine will end up on eBay. Kind regards, Philipp -- http://www.hachti.de

15 years, 5 months

Computer Machinery Corporation?

by jm191270＠yahoo.fr

What would you like to know ? JaM jm191270 at yahoo.fr

15 years, 5 months

Reaching Sharon on OSI system...

by bdamer＠digitalspace.com

Oh and to reach Sharon her email address is: SharonMaul at aol.com bruce

15 years, 5 months

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