test-drb September 2002

test-drb@ccmp.vtda.org

217 participants
408 discussions

6845 CRTC, Microvitec VDU/BBC Micro sync waveforms (was Re: CoCo's *are* real...)

by philpem＠dsl.pipex.com

Sorry about the last message (the one that contained HTML). I've just reinstalled Win98 and Outlook and forgot that OE5.5 defaulted to HTML format for mail. Tony Duell wrote: > But what chipset does this decoder use? Some of them do contain sync > generators, as they can be used as general-purpose display devices > too. The SAA524x series can, for example. The board is from a Ferguson T14T (Thomson TX91 chassis?) and has two ICs onboard - a Texas Instruments IC labelled: EUROTEXT TELETEXT DECODER CF70204NW 59A5V3W The other one is also TI, labelled: 58D71DT CF72306 DATA SLICER Anyone got a Ferguson T14T or Thomson TX91 service manual? I need the part number of the TTX decoder mentioned in the schematic. I think it originally used a Philips SAA52xx IC, not sure though. Thanks. -- Phil. philpem(a)dsl.pipex.com http://www.philpem.dsl.pipex.com/

22 years, 3 months

Anyone in the Raleigh NC area?

by mythtech＠mac.com

This is on eBay right now, anyone in the Raleigh North Carolina area that wants these things? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2051689106 I would love a 512k or two and the SE 30, and would be willing to go in for some (or all if it goes low) of the bid if someone wants to pick these things up. It looks like they can probably be had for about $30 (opening bid of $25 with zero current bids, closes in about 12 hours) -chris <http://www.mythtech.net>

22 years, 3 months

More Free Stuff Near Philly

by wonko＠4amlunch.net

ok, added to the list are two Dataproducts dot-matrix printers, model M200. one in beige skins and one in black skins. also available is a spares kit that has at least one of every piece in the printers. -brian -- "You're the only stranger i know, and you're as strange as they come laddie."

22 years, 3 months

Data General stuff, Nova 2/10 on ebay

by Innfogra＠aol.com

A friend asked me to post this listing of a DG2/10. I told him he is asking 5 times what it is worth but he has delusions of value. If anyone is interested they should would make him an offer after the auction closes. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2052986986&rd=1 I told him the price he is asking is for a fully function and running DG not an incomplete and untested system. I think he realizes it wont sell. I mention him in particular because he is sitting on one of the biggest stashes of Data General in the Northwest. He is an old mainframe person turned into a scrapper who like to accumulate. Findlay used to provide data processing services and still has a running IBM 4381 in a real computer room. However I don't think he does much data processing business anymore and makes his living off of scrapping. He turned out to be the DG scrap specialist in PDX in the late 1990s when a lot of systems were coming out of service from the Government. Last I was there the place was filled with old DG racks. He was/is selling parts into the DG secondary market. Everything from Novas to MVS?10,000s. Not much newer. If you are looking for odd old Data General parts it may be worth contacting him. He travels a good part of the year. Paxton Astoria, OR

22 years, 3 months

Today's Dumpster Grab...

by mythtech＠mac.com

>You must have a better Goodwill there that we have around here. There is >never >_any_ computer stuff at our local Goodwill. I've seen computer stuff >donated, not sure where it goes though... They might throw it out... the Salavation Army store near me does that. They sell computer parts (monitors, keyboards, software, printers, that kind of stuff), but all CPU's they throw out. They claim this is because too many people were buying them, and then bringing them back and expecting support or to return them when they didn't work (despite all the large "As Is, All Sales Final" signs everywhere). You should check with them, maybe they will let you have them if all they are doing is tossing them. -chris <http://www.mythtech.net>

22 years, 3 months

Wanted: Intel Data Catalogs

by pete＠dunnington.u-net.com

On Sep 10, 15:23, Bob Shannon wrote: > > I've got a minty 1977 catalog here... > > Joe wrote: > > > > 1974 or '75 catalog? I didn't know they printed them that far back. > > I've seen several 1978 or '79 catalogs but nothing older. I have a well-thumbed 1976. -- Pete Peter Turnbull Network Manager University of York

22 years, 3 months

Apple II Echo II card and speaker

by mythtech＠mac.com

I just aquired an Apple II "Echo II" card and speaker box. I don't get how to connect the speaker box. It has a Din 5 connector, but no where on the card is any place to connect it. The card has a 2 pin plug for routing the Apple internal speaker, and has a 1/8 inch phono jack for an external speaker. Also, maybe I misunderstood what this thing does. I thought it was basically a sound card for the Apple II series, but the box has a "rate" dial, and the company that makes it is the "American Printing House for the Blind" (based on a product label on the underside of the speaker box). Is this thing some kind of voice box? What software do I need to make it work? -chris <http://www.mythtech.net>

22 years, 3 months

Apple II Echo II card and speaker

by mythtech＠mac.com

>I have no idea where the DIN connector would go. I don't think I've ever >seen an Echo card with that. I'm still scratching my head on that. The only DIN 5 connector I remember on an Apple II, is on the IIc for the modem port. Maybe this was meant for that (it is possible that the two are not a pair, I got them as a pair, and I have seen one on eBay as a pair, but maybe the card is for one type of Apple, and the box is for another). >It also does speech synthesis with the supplied software. If you don't >have the software then I can probably make a copy for you as I know >exactly where my disks are. I don't have the software. All I got was a card and speaker box. I was going to check the asimov ftp site, but if you know where the disks are, and it isn't much trouble to send me images, that would be great (but if it is much effort, I can just search that ftp site and then bug you again in the future if I can't find the software there). -chris <http://www.mythtech.net>

22 years, 3 months

Apple II Echo II card and speaker

by mythtech＠mac.com

> I could use a copy if you don't mind. I have one of those cards too. >Is there anything special about the speaker box? (Is it amplified?) I >didn't get the box with mine. I just opened the box for mine. Now mine most likely is designed to hook up to the serial port if a IIc, but inside, there is NOTHING of importance. No amplifier, no nothing. Basically, the cable comes in, 2 wires go to the Volume, which splits to a headphone jack and then to the speaker... and 2 wires go to the pot for "Rate". So at least on the IIc version, everything must be done in software, and the rate pot must just alter the signal on the serial port, and just tells the software to make the correct changes. I don't know what is in the box for the IIe card. I found a pic of that box, and it appears to have a standard 1/8 plug for that speaker jack on the card. I couldn't really tell from the picture if there was even a "rate" dial on that box at all. If there was, the dial was missing and it was just the post. I would think that if there is a rate dial for it, that something would have to be done internally to the box, because there doesn't appear to be any way to get the signal back to the card (the jack on my card looks like it might be a mono type plug, which would only give you the +/- for the speaker and no return path). The software is supposed to be on the asimov ftp site (ftp.apple.asimov.net) but I can't seem to log on there right now (I either get a connection refused, or it just sits trying to connect). Does anyone know if that site is still up? (I'll check the appleii newsgroup tonight... I can't read NNTP from work) -chris <http://www.mythtech.net>

22 years, 3 months

Apple II Echo II card and speaker

by mythtech＠mac.com

>Aha. Look at the speaker box. Does it say "Echo II" or "Echo IIc"? If >the latter then it is the //c version of the Echo card, since there is no >way to put the card inside a //c. If this is the case, I am not terribly >familiar with the Echo IIc. I would guess the electronics are in the box, >and it connects to a serial port on the back of the //c. All it says is "Echo" and then on the bottom it says "Echo Commander". I did find some links, and I am guessing you are right, this is the IIc version, and doesn't actually go with the card that I got. I found out there were at least IIe, IIgs, Mac, and PC versions, all seem to have slightly different connection methods. I didn't see anything that specifically mentioned a IIc version, but it would make the most sense based on the plug. I'll have to pull out my IIc and give it a try. Do you know, do you *need* the echo box, or will any speaker work? Can I just hook up a set of headphones to the card's "speaker" connection and use it that way? Or is the speaker box part of the system itself (has electronics in it that are used for the speech). Just curious if I should hunt down the box to match my card, or if I can use it without. >These days everything is a chore. If you don't find it on Asimov then let >me know. I'll make disk images that I can send to you, and you can put >them up on Asimov for the next guy :) In the searching, I found reference to a complete set of the disks being posted on the Asimov site, so they should be there, I just haven't gotten as far as looking. Thanks for the help. -chris <http://www.mythtech.net>

22 years, 3 months

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test-drb September 2002