test-drb June 2008

test-drb@ccmp.vtda.org

194 participants
304 discussions

Computer love (Was: Corestore - the Big Move)

by tiggerlasv＠aim.com

> >> Being unmarried means I get to put my server rack > in the dining room. > >> That's better than sex. > > This is real geek porn: > > ftp://ftp.franken.de/pub/people/m/pix/comp/ > There's someone that has taken Kraftwerk a little too seriously. . . . http://music.yahoo.com/Kraftwerk/Computer-Love/lyrics/656721 I'm not sure if I'll ever be able to look at my 11/83 the same way again. ;-) T

16 years, 6 months

non-CP/M Z80 board

by ajp166＠bellatlantic.net

> >Subject: Re: non-CP/M Z80 board > From: Dave McGuire <mcguire at neurotica.com> > Date: Wed, 18 Jun 2008 23:13:54 -0400 > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > >On Jun 18, 2008, at 11:48 AM, Chuck Guzis wrote: >>> They're all over the place. I have at least one tube of *brand >>> new* NMOS Z80 (not-A) chips here...cost me all of three bucks on eBay >>> in '06 or so. Need any? >> >> I think the chips under discussion were the 8085 specialty chips, >> 8155, 8355, 8755, etc. Got tubes of those? > > I've got a dozen or so 8755s, two or three 8155s, and no 8355s. >Not tube quantities, unfortunately. > > -Dave I do. Several tubes of 8755A, 8155A, 8156A and 8085A and some A-5s. Those parts are not that uncommon and they did have multiple vendors. Most of the Z80 (2.5 ->8MHZ) and peripherals are available from many vendors including JDRmicrodevices. Not all the peripherals were availble to 8mhz though (DMA was never made faster than 4mhz if memory serves). Allison >-- >Dave McGuire >Port Charlotte, FL >

16 years, 6 months

Atari 2600 AV mods

by dgriffi＠cs.csubak.edu

A couple years ago there was talk about AV mods for the Atari 2600. Does anyone here have a Cybertech AV mod? How is it different from the standard CD4050 hack? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

16 years, 6 months

with reluctance... pdp-10 for sale

by mross666＠hotmail.com

I've finally gone and done it: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150256074674 Don't really want to, but if a deep-pocket collector decides to bite, it's gone. Mike http://www.corestore.org _________________________________________________________________ Search that pays you back! Introducing Live Search cashback. http://search.live.com/cashback/?&pkw=form=MIJAAF/publ=HMTGL/crea=srchpaysy…

16 years, 6 months

non-CP/M Z80 board

by cclist＠sydex.com

> Date: Wed, 18 Jun 2008 09:24:05 -0400 > From: Dave McGuire > > Are those parts even around any more though? Easy enough to find? > > I haven't > > looked in a while... > They're all over the place. I have at least one tube of *brand > new* NMOS Z80 (not-A) chips here...cost me all of three bucks on eBay > in '06 or so. Need any? I think the chips under discussion were the 8085 specialty chips, 8155, 8355, 8755, etc. Got tubes of those? Cheers, Chuck

16 years, 6 months

What's the value of. . . (Was: Apple I back up on ebay)

by tiggerlasv＠aim.com

>> The monetary value of something is the price that a seller and buyer >> are willing to agree to. If a replica sells for $2000, then its value >> to the seller and buyer must be $2000. > > I can't tell whether the responses along these lines are honest > misunderstandings or well hidden sarcasm. > > We all know the sale price of this item. One sale does not a trend > make. Why can't someone provide either a useful answer or some useful > information? I don't know that there is an authoritative answer to that, or to most other "what's it worth" type questions about vintage computer equipment. Consider for example "The Antiques Roadshow", or auction houses like Sotheby's. There are a number of folks out there who are experienced at appraising artwork, old furniture, classic automobiles, and a plethora of other items. Most of which has been around for many many years. Can the same be said of the computer and/or electronics industry? I think the market is still in it's infancy, and there's probably not enough interest in the vintage equipment to support expert opinions. (Yet.) Case in point: Check out this VERY cool Predicta television: http://www.flickr.com/photos/72154009 at N00/2186381451/ I'm sure there are a number of folks out there who could give you a reasonably accurate opinion about the overall value of this unit. This is in part due to the niche market interest in old electronics such as this. And it's been around for a number of years. Now, who could tell me definitively, the "value" of this 1976 Magnavox? http://www.tvhistory.tv/1976%20Magnavox%20TV.JPG Probably not a whole heck of alot of people. There were a large number of them made. But there's not alot of interest in it, because it's still "fairly" new, and by the time it started to wear out, we had moved into an age when people didn't hold on to their old electronics, they just threw them out, and got new stuff. I find that people who ask "what's it worth?" can be divided into two categories. Either they haven't a clue, and are too lazy to do the research, or, they have an idea of what they want, but don't want to lose out by paying too much, or charging too little. Buyer's / Seller's remorse. Do the research! Find out what they've sold for in the past. Look at ALL the prices, high and low, and see if it jibes with what you think it's worth. And don't assume that you'll get the same amount as others have; there are simply too many variables. Research is sometimes very difficult with unique or limited-availability items, which brings us back to the original topic: Is a potentially non-working Apple I clone worth $2000 to me? No. Is it worth $200 to me? No. But then, I'm not a collector of Apples. As a rule of thumb, we shouldn't be asking the question "What does someone else think it's worth?", we should be asking the more important question, "What is it worth TO ME?" This applies to both buying and selling. Either way, if you buy and sell based on the opinions of a limited number of people, you'll eventually end up getting burned. Um, yeah. . . If you give me $10, I'll be happy to haul away that old Altair for you. . . ;-) Regards, T ------------------------------------------------------------------------- ------ Note: The opinions expressed above do not necessary reflect the views and opinions of the author.

16 years, 6 months

CP-M Z80 home brew computer circuit board

by les＠hildenbrandt.com

The 279x (1,3,7) series chips actualy had a working pll data seperator. Here is a link to the 279x controller chip data sheet: http://retrotechnology.com/herbs_stuff/fdc_datasheet.pdf As I recall, the 179x series chips could not reliably do sector reads from disks formated on a 177x controller. The 179x could do a track read of the disk. Morrow provided a program with the Disk Jocky controller which would do track reads, then write the track back out creating a disk which worked well with either the 177x or 179x series controllers. It was not a common issue, as very few people used single density once double density became available, and new single density disks worked well with either controller. Les

16 years, 6 months

FW: time to part with my PDP-11 system

by dm561＠torfree.net

---------- From: M H Stein[SMTP:dm561 at torfree.net] Sent: Wednesday, June 18, 2008 9:38 PM To: 'cctalk at classiccmp.org' Subject: time to part with my PDP-11 system ----------ORIGINAL MESSAGE: Date: Tue, 17 Jun 2008 01:52:09 +0000 From: Ethan Dicks <ethan.dicks at usap.gov> Subject: Re: time to part with my PDP-11 system On Mon, Jun 16, 2008 at 03:26:15PM -0400, M H Stein wrote: > Date: Mon, 16 Jun 2008 03:54:51 +0000 > From: Ethan Dicks <ethan.dicks at usap.gov> > Subject: Re: time to part with my PDP-11 system > > <snip> > >...Eventually, I'll do another camping trip to Hamilton... > <snip> > -ethan > --- > > I'm in Hamilton every week or so, and I have to ask: why? > ;-) The serious answer is because I have friends who live in an arc between St. Catherines and the west edge of Toronto, and every June since the early 80s, they've done a largish camping event somewhere in the Hamilton area (Knight's Dunmark Park is where it was 20 years ago, but that was turned into a golf course). While these friends aren't into classic computers at all, it does give me incentive to spend the gas to drive 7-8 hours >from central Ohio, and puts me in that area for quick little side trips (like to Jerome's house) every few years. -ethan -----------REPLY: Ah, that explains it; although it's actually a very nice place aside >from the steel mills and smelters, Hamilton's not really known as a tourist hot spot. If and when you do get up here again, I'd love to meet for a coffee and say hi; haven't seen Jerome in many years either despite being in the same city, but then I'm not a DECcie... Looking forward... mike **********************************************************************

16 years, 6 months

home for Tandy PT210 manuals

by dgriffi＠cs.csubak.edu

Does someone have a website of Tandy manuals who'd like to host the scans of the user and service manuals for the PT210 printing terminal? I've been hosting them for a while, but I don't have very much bandwidth to spare. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

16 years, 6 months

Congratulations Seth!

by lynchaj＠yahoo.com

Hi All, Seth just built his N8VEM SBC and it worked on the first try! Congratulations Seth! Great Job! Andrew Lynch PS, this is also an important milestone; it is the first of the shipped SBC PCBs I know of to see "first boot" in the field. -----Original Message----- From: n8vem at googlegroups.com [mailto:n8vem at googlegroups.com] On Behalf Of Seth Morabito Sent: Wednesday, June 18, 2008 2:28 AM To: N8VEM Subject: [N8VEM: 108] Re: How are things going for builders? P.S.: The completed board: http://www.flickr.com/photos/twylo/2588823197/ The software, in action: http://www.flickr.com/photos/twylo/2588826647/ -Seth --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "N8VEM" group. To post to this group, send email to n8vem at googlegroups.com To unsubscribe from this group, send email to n8vem-unsubscribe at googlegroups.com For more options, visit this group at http://groups.google.com/group/n8vem?hl=en -~----------~----~----~----~------~----~------~--~---

16 years, 6 months

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test-drb June 2008