- vcf-midatlantic - lists.vcfed.org

Atari 810 Case / Drive
by John Heritage 13 Nov '19

13 Nov '19

Good Morning everyone - i'm still looking for an Atari 810 drive with the center 1/3rd flap style (rather than the 'full size door / barn door' style front lip) to go with my (recently restored) Atari 800 setup. I bought one off of Ebay a few years ago but the seller packed it terribly, and the case was damaged in two places (front side, and a whole on the 'left' side towards the back). if you have a bad drive but a good case i'd be very interested in that too.. If anyone has one they'd be willing to sell, please let me know. I know someone on the list had one but i failed to follow up (a year or two ago..) Thanks! John

2 1

11/9 & 11/10 Workshop Review - and Photos !
by dillera＠gmail.com 12 Nov '19

12 Nov '19

I had a great time, it sounds like I missed a fun Sunday also. Here are photos of the group on Sat: https://imgur.com/a/aOcgqOK It was a blast sitting back and screwing around with Tony and our 68k Macs and troubleshooting SCSI gremlins for five hours. Just like the old days. I did finally install system 6 on a working external SCSI drive, then upgrade it to System 7.0 with Tony's disks. The one big drive that was causing errors on my Macintosh Classic came up fine on Tony's SE/30 - so I'm pretty sure the caps are going on my Classic and messing with the SCSI on it. I did get some cool 68k B&W games from Tony while my harddrive was hooked up to his SE/30. I hope I didn't get any viruses.... And thanks again for the Perkins Perks - you usually bring something amazing for the group, I do appreciate that. I took some video w/ my goPro and the little stedi-cam I got, I'll throw that together in iMovie and see what I can come up with. I'll def grab some video at the upcoming festivus. -andy

1 0

Re: [vcf-midatlantic] 11/9 & 11/10 Workshop
by Jason Perkins 11 Nov '19

11 Nov '19

Tony helped me remove a virus I'd spread around my external mac HDDs. Thanks!! I spent some time working on a Tektronix 4696 printer. It's an early color inkjet, a casual search suggests it was introduced in 1987. Mine was bought in 1988, and never used. After figuring out what the magic "maintenance fluid" is (water), and many hours of cleaning cycles & manual cleanings (Thanks Connor!) it started producing great output! https://twitter.com/compu_85/status/1193681132442787841 On Sun, Nov 10, 2019 at 10:10 PM Tony Bogan via vcf-midatlantic < vcf-midatlantic(a)lists.vcfed.org> wrote: > I’d also like to give a shout out to David Gesswein, Bill Dromgoole, Ian > Primus for helping work on other VCF/museum machines, Connor and Jason for > helping anyone with anything and everyone else who chipped in as always. > Workshops are so great because everyone pretty much jumps in and helps > everyone with everything. It’s why we get so much done in so short a time! > > I’d also like to thank Adam Michlin for all his help today along with Jeff > for organizing and running everything. A special super big thanks to Dean > and Drew Notarnicola for coming all the way down here just to man the > museum all day so everyone else could work on their own projects. I’m sure > I forgot someone, my apologies. > Dean, Drew, Adam and I took a quick lunch break and Drom and Jeff covered > the museum. > > Total team effort. Thanks everyone! > Tony > -- Jason Perkins 313 355 0085

2 1

November Workshop Update
by jsalzman＠gmail.com 11 Nov '19

11 Nov '19

It's been a while since I was at a VCF Workshop. This was the first time I attended one in the Hackerspace. I don't know which working area I prefer the most. The 9032-A building lets you S-P-R-A-W-L for sure. I found myself uncomfortably encroaching in the Hackerspace building into space I didn't feel I needed to take up. However, nobody seemed to mind, and I made sure not to block paths and get in people's way. I did like the high top workbenches and the fixed power strips with outlets every three inches. It was very kind of the Hackerspace group to lend us the use of their facilities (and the few tools I needed and did not have on hand). I hope they soon develop a payment system for parts that they stock. I know they're working on something to manage that process, but they do have quite a selection of parts in stock. It would be a nice symbiotic relationship between VCF and CDL when we are otherwise unable to source repair parts for the items we fix by buying directly form CDL. And speaking of fixing... I brought the following items to the workshop: - Kaypro 10 - garbage screen on the lower half of the display - Compaq Portable - former keyboard refoaming project which had issues after refoaming - (3) Coleco Adam systems - mainly for triage to determine what I have that works and doesn't - My MOBIDIC project stuff - In case I had free time to work on it - SupercardPro flux reader - To identify and archive unknown disks in my collection - Raspberry Pi 4 - because... Raspberry Pi 4! - All my 74XX and 74XXX chips - to count and sort if I got bored. The first thing I did was start on the Kaypro. This was one of those systems that worked fine when I put it away a year ago, but suddenly had problems when I turned it on a few weeks ago. Thanks to the advice of Ian and others, the display issue was the result of a bad 2128 RAM chip. Nevell happened to have a replacement with him and it WORKED! Thanks again Nevell! A Kaypro isn't a big thing for many, but it's my only dedicated CP/M machine and I like to keep it running as long as I can. BTW, the Kaypro 10 was kind enough to nominate me for the honorary "First to Smoke" award, having unceremoniously given up it's RIFA cap before lunch. Sorry about the air freshener, folks! The next things I worked on were my Coleco Adam computers. These took most of my time over the weekend (and most of my vehicle's cargo space). I have one working system. A second system is completely DEAD, which I did not attempt to fix due to issues and discoveries made while working on the third one. The third one partially booted to the built-in Smartwriter software, but locked up before it completed drawing the typewriter screen. Subsequent resets of the system produced a consistently cascading set of problems. First reset would only show a cyan screen. The next reset would produce a blank screen. Each additional reset created a blank screen, but at random, would introduce low volume sound tones. After Internet research, and posts to the Coleco Adam Facebook group, I discovered that operational issues like this could be the result of a bad 6801 in the system, or the surrounding operational logic for each one. Each one meaning that the Adam actually has several support microprocessors in them. I was unaware of this. Each support microprocessor is a 6801, which is very similar in concept to the Texas Instruments TMS9000 series, where the microprocessor has built-in mask ROM on board. So while several 6801 chips are in the system, they can't be swapped within the system to test for a bad one, as they each have their own dedicated code. I'd have to swap from a known good system, but even then, they are soldered to the board. It would be a risk to try and remove a good one, just to test on another system. They are not easily replaceable and there are not any known modern alternatives for them (i.e. like the PLAnkton for the C64). In all my research and struggle, I completely failed to test the other two Adam printers I brought with me. If you weren't aware, the Coloco Adam system's power supply is in the printer. Therefore, you need the printer hooked up to the system to make it work. I just kept using the same working printer to test the remaining systems in my collection and didn't bother pulling out the other two printers I had to see if they worked Since it was Sunday by now on this two-day Workshop, I decided to look at my Compaq Portable. The keyboard on them are capacitive, not mechanical switches. There are foam and mylar pads inside each key, and the foam deteriorates over the years, rendering the keys inoperable. About a year ago, at another Workshop event, I began to replace bad foam pads in the keyboard. I had a pad kit that was long awaiting use, and I finished the swap. However, the keyboard failed to work afterwards. I didn't dwell on it too much back then due to other items I wanted to work on, so I saved it for a future date and got back to it at this past weekend's event. It was suggested by others that I carefully check each and every pad to make sure it "snapped" under the all four clips on each key top. I found a few that were not clipped in completely. The symptoms of the keyboard were a 301 error upon boot and a "+" symbol on the input field where it asks for system time. I'm thinking I have a stuck key. This assumption is based on the fact that the mylar cap on the bottom of the key foam on all keys is near flush with the body of the key as it mounts against the circuit board. I'm guessing the aftermarket foam replacements I got are too thick, and the mylar part is resting on, or too close to, the circuit board contacts. Maybe this Compaq Portable will show up at January's workshop... Next, I brought out my SupercardPro. I have this conveniently mounted in an old IBM external drive case, since it contains a working drive power supply, room for my dual 3.5" and 5.25" half height drive, and the SupercardPro board. The SupercardPro is a disk flux reader whose software handles many disk formats. I had a bunch of unmarked disks from one of the many disk lots I've acquired over the years and could not identify on other systems. With a flux reader, I should be able to find patterns to help identify a disk format. Unfortunately, these disks were stored in less than stellar conditions and have accumulated surface dirt and other unnaturally formed coatings. The iron oxide layer was getting brittle and in some cases, had gotten scraped away under the head of the floppy drive. So, I abandoned further attempts to read any more disks and may consider them a loss. I think they may have had CP/M or Minix data on them, if I remember correctly where I got them from. Finally, over the entire weekend, I spent about 10 minutes, tops, on my MOBIDIC project, and that time was spend just showing its progress to others and not any additional coding. I also did not get to any of the remaining items I planned to work with as I ran out of time. Thanks for the great weekend! Jeff Salzman

1 0

Re: [vcf-midatlantic] 11/9 & 11/10 Workshop
by Tony Bogan 11 Nov '19

11 Nov '19

I’d also like to give a shout out to David Gesswein, Bill Dromgoole, Ian Primus for helping work on other VCF/museum machines, Connor and Jason for helping anyone with anything and everyone else who chipped in as always. Workshops are so great because everyone pretty much jumps in and helps everyone with everything. It’s why we get so much done in so short a time! I’d also like to thank Adam Michlin for all his help today along with Jeff for organizing and running everything. A special super big thanks to Dean and Drew Notarnicola for coming all the way down here just to man the museum all day so everyone else could work on their own projects. I’m sure I forgot someone, my apologies. Dean, Drew, Adam and I took a quick lunch break and Drom and Jeff covered the museum. Total team effort. Thanks everyone! Tony

1 0

11/9 & 11/10 Workshop
by Tony Bogan 11 Nov '19

11 Nov '19

Very productive workshop! While others will chime in no doubt with they’re accomplishments, here’s my update from the workshop. Saturday Andy Diller and I spent a lot of time on his Mac Classic and a couple SCSI hard drives. We used a few different Macs and peripherals to troubleshoot the Classic and confirm the hard drives are working (I forgot how much I love SCSI voodoo....yeah. Right.) I also got to disinfect two hard drives that belong to Jason Perkins. Can’t remember the last time I used Disinfectant to remove the Wdef virus!! Jason brought a bunch of HP i5 mini machines. A bunch of us picked up one or two and spent some time installing Windows 10 or Linux on them (not very retro, but it’s a workshop so who cares!?!) Sunday I spent the better part of the day working on the Apple /// from the museum. The computer was working but the drive was a bit wonky. After a good cleaning it worked fine. I ran the Apple /// confidence test and discovered some bad ram on the Memory Board. This is a first run Apple /// so it has the 12v memory board. A run to the warehouse revealed the other 3 Apple /// machines we have are all later models with the 5v memory board. Alex Jacocks used his new IC tester to determine which ram chips were bad. Now we know the ones we need to replace. Meanwhile, as Adam Michlin and I went through the machines in the warehouse we discovered the in box Apple /// we have is actually a nice Apple /// plus!! We brought it back to the workshop and with Ian’s help we got it running. It is now the Apple /// running in the museum. Side notes: The museum Apple /// decided to let out the magic smoke from the RIFA caps during testing. While Adam and I were going through the warehouse machines Ian removed those caps from the PSU. He also preemptively removes the ones from the ///+ PSU. I had brought my library of Apple /// software in anticipation of working on the museum machine, and Adam and I picked out a couple of dealer demo disks I had to run on the machine in the museum. I also got to spend a little time with my newest acquisition, and Apple II J-Plus. It was used to donate parts to Mike Rosens Apple II+ for troubleshooting and donated its 6502 to the Apple ///+ to get it working! Not what I planned on doing with it, but it was fortuitous I brought it! Saved some trips to the warehouse for parts! Tony Sent from my iPhone

1 0

Re: [vcf-midatlantic] First to smoke award goes to ... (Jeffrey Brace)
by Tony Bogan 11 Nov '19

11 Nov '19

Unfortunately the Apple /// was the one from the museum. Fortunately it was just a RIFA cap. It’s no longer a problem. Tony

1 0

Re: [vcf-midatlantic] First to smoke award goes to ... (Jeffrey Brace)
by Michael Thompson 10 Nov '19

10 Nov '19

> From: Jeffrey Brace <jeffrey(a)vcfed.org> > Subject: [vcf-midatlantic] First to smoke award > > Jeff Salzman and his KayPro at our VCF repair workshop today. > -- > ========================================= > Jeff Brace > Vice President > Vintage Computer Federation We did that at the RICM a few weeks ago. The RIFA cap below the AC inlet in a Kaypro-4 let out a huge amount of really stinky smoke. We just cut it out for now.

3 2

Workshop start time today
by Jeffrey Brace 10 Nov '19

10 Nov '19

We are all at breakfast now. We should be finished by 10:30 and back at the repair workshop by 11. -- ========================================= Jeff Brace Vice President Vintage Computer Federation

2 2

Wanted 286, 386 working motherboard
by Sentrytv 09 Nov '19

09 Nov '19

I have a couple of cases that had a 386 and 286 motherboards in them. The 286 motherboard is corroded beyond repair, so I would like to put a working motherboard in the case and get the system working with DOS and windows. I have tons of software, I just don't have a good working motherboard. So if anybody out there is coming to the workshop tomorrow, Sunday, if you have a spare and you want to get rid of it, please contact me off list. Also If you have one and your not coming to the workshop, still contact me, maybe we can work out a way for me to either pick up or have it shipped. Thank you Mike R. Sent from: My extremely complicated, hand held electronic device.

1 0