March 2021 - vcf-midatlantic

Commodore 1702 door
by svcatitc＠aol.com 21 Apr '23

21 Apr '23

Jeffrey Brace jeffrey at vcfed.org Writes:Wed Sep 2 13:48:24 EDT 2020 Sounds like an Outer Limits episode where the world was taken apart and remade every moment and sometimes they made mistakes which is why when you lose your keys you find time in a place that you already searched. I thought this was a Spielberg "Amazing Stories" episode, obviously not. The episode is: "A Matter of Minutes" is the third segment of the fifteenth episode from the first season (1985–86) of the television series The Twilight Zone. See: https://en.wikipedia.org/wiki/A_Matter_of_Minutes I remember that scene where the couple is in the "Void of White Space" and the "Supervisor of the Maintenance of Time" says: (paraphrasing) "Ya know how you go back to look for something you know is supposed to be there multiple times and then it finally is where you thoughtit should be? That's us. We forgot something. We are now working on moving Christmas!" I personally call them the "Minute-Ahead" men and you may hear me at a workshop cursing at them!!!! I DOOO BELIEVE! Bill Inderrieden

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April Swap Meet wanted
by Mike Loewen 11 Apr '21

11 Apr '21

For anyone coming to the April 24 swap meet: I'm looking for a pair of Teac FD-55BV or FD-55B 1/2-height diskette drives. I'd prefer black, but would take beige. Let me know, off-list. Mike Loewen mloewen(a)cpumagic.scol.pa.us Old Technology http://q7.neurotica.com/Oldtech/

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PEP Modular Computer
by Neil Cherry 02 Apr '21

02 Apr '21

I have just pulled out my PEP Modular computer with a 68K KA. I think it has 1M of RAM and possibly 13 serial ports (9, 15 and 25 pin ports). I think this also has a parallel port of two but isn't broken out. I haven't tried to start it yet. I need to remove the drives, let them warm up and see if they work. There is one floppy which I think is a 800K drive and two hard drives. I'll boot the machine and see if I can get into the ROM monitor. A quick check of ebay reveals this thing cost only slightly less than it did when it was new. ;-) -- Linux Home Automation Neil Cherry ncherry(a)linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies

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VCF Swap Meet SIGN UP NOW!
by Jeffrey Brace 01 Apr '21

01 Apr '21

To make my job easier, please sign up everyone. I know that there are some people that are coming, but haven't signed up yet. The more pre-registrations the better! VCF volunteers have gone through the warehouse this past weekend and found a number of nice surplus items that will be sold at the swap meet. All proceeds from the swap meet go to the warehouse fund to repair and renovate the warehouse. We are raising money for structural repairs and climate control. Reserve your spot here: < https://docs.google.com/forms/d/e/1FAIpQLSflJj96tDi8WK2dfb_rlY0VuI5RIbu4WKm… > More info here: http://vcfed.org/wp/vcf-swap-meet/ It is April 24 with a rain date of April 25. Also keep in mind the Repair workshop that happens the same weekend. Same rules apply as other repair workshops (i.e. $15 per person, bring your own tools, first come, first serve, two buildings, etc.) ========================================= Jeff Brace Vice President & Board Member Vintage Computer Festival East Show-runner Vintage Computer Federation is a 501c3 charity http://www.vcfed.org/ jeffrey(a)vcfed.org

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Museum Report 2021-03-31
by Jeffrey Brace 01 Apr '21

01 Apr '21

Typically Wednesdays are slow, but today there was an avalanche of people! 212 people to be exact. Apparently today was Passover Day of Learning so there were a lot of Lakewood residents visiting InfoAge and all the museums. I arrived at 2PM and helped out Bill Inderrieden. We tag teamed the groups of visitors coming in. It was a steady flow of people from the moment I got there at 2PM until 5PM when we had to close. So a very busy day, but good to have so many visitors! ========================================= Jeff Brace Vice President & Board Member Vintage Computer Festival East Show-runner Vintage Computer Federation is a 501c3 charity http://www.vcfed.org/ jeffrey(a)vcfed.org

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April Swap Meet Wanted (also)
by Gregg Levine 31 Mar '21

31 Mar '21

Hello! For anyone also coming to the April 24 swap meet: In my case I am looking for practically the entire AMD AM25 logic line. Also the members of the Series 74 TTL line from TI. (The entire AM29 series would be nice.) I have a short list posted on my website under parts wanted. http://www.gregg.levine.name it is found there. But I am discovering that I need others. If one would look at the 1982 databook and its supplement, they would see the numbers there. I can then explain off-list why if anyone else is interested. Price is negotiable. ----- Gregg C Levine gregg.drwho8(a)gmail.com "This signature fought the Time Wars, time and again."

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InfoAge and VCF Museums are closed Sunday April 4 for Easter
by Jeffrey Brace 31 Mar '21

31 Mar '21

Due to the Easter holiday InfoAge and VCF will be closed. However I will still be doing some work in the museum. ========================================= Jeff Brace Vice President & Board Member Vintage Computer Festival East Show-runner Vintage Computer Federation is a 501c3 charity http://www.vcfed.org/ jeffrey(a)vcfed.org

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Wanted: Atari 800XL mobo, Amiga 600 mobo (needs repair is ok)
by Ethan O'Toole 30 Mar '21

30 Mar '21

Hello all, Two projects that have been kicking my butt... an Atari 800XL motherboard repair and an Amiga 600 motherboard repair. I'm interested in an 800XL board, and it can be incomplete! Missing a custom chip or two? Not an issue. I have a great case and a board that looks great but it crashes. Something physical, and it might be a trace that is split but not visible or a passive. All the customs tested fine and I've tested like 80% of the common chips and they were fine. Second up... Amiga 600 motherboard. I am repairing one, looking for another one. Okay if it needs repair. These suffer cap damage and I've spent hours and hours trying to fix mine. It's really not much better than an A500, and I have a A2500 and A4000T that are better. but I miss having it working. Any leads appreciated. Just tired of seeing the systems in parts.

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Re: [vcf-midatlantic] Identifying C64 motherboards
by Alexander Pierson 29 Mar '21

29 Mar '21

>One question isn’t there a database that may have serial numbers for each of the different versions? There is the C64 registry. However, because Commodore inconsistently assembled their machines, and performed all sorts of refurbishment of defective units, you see mismatched builds that aren't necessarily indicative of a specific year. https://c64preservation.com/index.php/registry There is also one for the VIC-20: https://cbmvic.net/registry -Alexander 'Z' Pierson On Sunday, March 28, 2021, 8:51:11 PM EDT, Sentrytv via vcf-midatlantic <vcf-midatlantic(a)lists.vcfed.org> wrote: One question isn’t there a database that may have serial numbers for each of the different versions? Sent from: My extremely complicated, hand held electronic device. > On Mar 28, 2021, at 7:19 PM, Jeff Salzman via vcf-midatlantic <vcf-midatlantic(a)lists.vcfed.org> wrote: > > It's quite a bit of information to weed through, but you may be able to > narrow the revision of C64 you have by comparing it to others who have > entered their C64 into this public registry. > > Commodore 64 (C64) Preservation Project > <https://c64preservation.com/dp.php?pg=registry> > > If you find many that have the same physical features, colors, looks as the > one you have, and have the same revision designation, then you can consider > it a public consensus as to what revision you have. > > As for rarity, it's still anybody's guess for the most part. Ebay prices > generally do not correlate to revision because most people don't specify > revision numbers in their ads. > > Jeff Salzman > >> On Sun, Mar 28, 2021 at 7:12 PM Jeffrey Brace via vcf-midatlantic < >> vcf-midatlantic(a)lists.vcfed.org> wrote: >> >> On Sun, Mar 28, 2021 at 7:10 PM Bill Degnan via vcf-midatlantic < >> vcf-midatlantic(a)lists.vcfed.org> wrote: >> >>> This is why I am saying use the motherboard revisions to know which C64 >> you >>> >> >> You mean the Assembly number and not whether is says "Rev A" or "Rev C" or >> something else like that? >> >> >>> have. There are too many boards and variations to simplify into Rev A >> and >>> rev B etc ... and there is no consensus. It's not accurate to rely on >>> exterior characteristics like the color of the logo, number of holes for >>> the video port, etc. >>> >>> B >>> >>> On Sun, Mar 28, 2021 at 6:58 PM Jeffrey Brace via vcf-midatlantic < >>> vcf-midatlantic(a)lists.vcfed.org> wrote: >>> >>>> On Sun, Mar 28, 2021 at 4:48 PM Alexander Pierson via vcf-midatlantic < >>>> vcf-midatlantic(a)lists.vcfed.org> wrote: >>>> >>>>> Jeff, >>>>> https://www.c64-wiki.com/wiki/Motherboard >>>>> >>>>> Something like this? Sure, it may not have the pricing part down, >> but >>> it >>>>> has the technical aspects covered pretty solidly. >>>>> >>>> >>>> Maybe. This site ( >>>> >> https://www.breadbox64.com/c64-hardware/commodore-64/assy-250425-rev-a/) >>>> seems to confuse me with Assembly number: 250425 having an Rev A & >> Rev. B >>>> >> https://www.breadbox64.com/c64-hardware/commodore-64/assy-250425-rev-b/. >>>> If >>>> your site is more trustworthy, then I would assume that breadbox64.com >>> is >>>> just wrong and there is *only* a Rev. B version. I might need a third >>>> opinion to verify. >>>> >>>> >>>>> I don't recall seeing a Rev. A sell by itself to know how much it >> goes >>>>> for. I do know that silver labels with Rev. A or B tend to fetch >>> upwards >>>>> of $200 on ebay these days. >>>>> -Alexander 'Z' Pierson On Sunday, March 28, 2021, 04:08:43 PM EDT, >>>>> Jeffrey Brace via vcf-midatlantic <vcf-midatlantic(a)lists.vcfed.org> >>>>> wrote: >>>>> >>>>> Hey everyone. I want to start knowing all the differences between >>>>> motherboards for the C64. A Google search shows some website, but >> some >>>> have >>>>> mistakes. I prefer a site which has a picture and not a schematic. >>>>> >>>>> Part of the reason is to know the differences for repairing, and part >>> is >>>>> for selling. >>>>> >>>>> I believe that Rev. A are worth more. Anyone know about selling price >>> for >>>>> this version of the motherboard? >>>>> >>>>> Thanks! >>>>> >>>>> Jeff Brace >>>>> ========================================= >>>>> Vice President & Board Member >>>>> Vintage Computer Festival East Show-runner >>>>> Vintage Computer Federation is a 501c3 charity >>>>> http://www.vcfed.org/ >>>>> jeffrey(a)vcfed.org >>>>> >>>>> >>>> >>> >>

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Re: [vcf-midatlantic] Identifying C64 motherboards
by Jeffrey Brace 29 Mar '21

29 Mar '21

On Sun, Mar 28, 2021 at 4:48 PM Alexander Pierson via vcf-midatlantic < vcf-midatlantic(a)lists.vcfed.org> wrote: > Jeff, > https://www.c64-wiki.com/wiki/Motherboard > > Something like this? Sure, it may not have the pricing part down, but it > has the technical aspects covered pretty solidly. > Maybe. This site ( https://www.breadbox64.com/c64-hardware/commodore-64/assy-250425-rev-a/) seems to confuse me with Assembly number: 250425 having an Rev A & Rev. B https://www.breadbox64.com/c64-hardware/commodore-64/assy-250425-rev-b/. If your site is more trustworthy, then I would assume that breadbox64.com is just wrong and there is *only* a Rev. B version. I might need a third opinion to verify. > I don't recall seeing a Rev. A sell by itself to know how much it goes > for. I do know that silver labels with Rev. A or B tend to fetch upwards > of $200 on ebay these days. > -Alexander 'Z' Pierson On Sunday, March 28, 2021, 04:08:43 PM EDT, > Jeffrey Brace via vcf-midatlantic <vcf-midatlantic(a)lists.vcfed.org> > wrote: > > Hey everyone. I want to start knowing all the differences between > motherboards for the C64. A Google search shows some website, but some have > mistakes. I prefer a site which has a picture and not a schematic. > > Part of the reason is to know the differences for repairing, and part is > for selling. > > I believe that Rev. A are worth more. Anyone know about selling price for > this version of the motherboard? > > Thanks! > > Jeff Brace > ========================================= > Vice President & Board Member > Vintage Computer Festival East Show-runner > Vintage Computer Federation is a 501c3 charity > http://www.vcfed.org/ > jeffrey(a)vcfed.org > >

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