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  1. M

    Looking for Franklin Ace 1000 ROM images

    So I was working on my (Working) ACE 1000 and I decided to clean the mouse poop off the motherboard. In the process, I removed the ROMs and went to read them all in.... Sadly, in the process, I accidentally wrote to the ROM in G7 before reading it out. One would think it wouldn't do anything...
  2. M

    Two of my C128 (Flats) have weak chroma output

    Hey all! Two of my three flat C128s have an interesting issue. The chroma output is very weak resulting in a nearly black and white picture. At first I thought my cable was bad or maybe my monitor was having an issue.... but going between a C64 and my other C128 show that it's other two flat...
  3. M

    Tecmar jrWave Memory Expansion for the IBM PCjr (pics)

    Hey guys -- a viewer sent me a very nice memory sidecar for my PCjr. He sent a Tecmar jrWave expansion sidecar. Pics and some info: https://imgur.com/a/m5uee6M He wasn't sure if it worked at all as he had had it a long time and no longer has a PCjr. He also didn't have the manuals or power...
  4. M

    Commodore 1571 Troubleshooting

    Hi guys, I have my very orange Commodore 1571 I'm trying to fix. Here are the symptoms: - Drive powers up normally - Drive does _not_ reset when powering on the connected computer - Accessing the drive, it does attempt to read the disk. The Green LED blinks rapidly while it's trying, the head...
  5. M

    PC Jr. keyboard interface protocol

    I recently acquired an untested PC Jr, matching monitor and the "Freeboard." It's in great shape but is missing some stuff. I was missing the power supply -- so I just went ahead and ordered AkBKukU's ATX adapter for it. When I had it open, I found it had the longboard power supply and the 64k...
  6. M

    Commodore 64 refused to die

    Hey guys, I wanted to share this story with you. I was out in rural Oregon (outside of Portland) picking up a cool Amstrad PPC 512 computer. The seller said he had some other old stuff that had been outside on his property for a very long time and wanted to see if I wanted it. He had some...
  7. M

    Advice on replacing leaking caps on Extron RGB 202xi converters

    Pics first: https://imgur.com/a/0pxxxe3 So I have five Extron RGB 202xi video converters from 1995 -- and I notice some of them have cap electrolyte on the PCB from leaking caps. I took one tonight I started to work on removing the caps to see how bad it was. Four or five caps were very leaky...
  8. M

    Monitor IIc troubleshooting - power LED but no HV or heater

    Hi guys, I recently picked up a boxed Monitor IIc and stand to match my Apple IIc. (I have very fond memories of spending countless hours a day using my Apple IIc when I was a kid, so yes, trying to recreate this.) I was happy when I received the monitor in that, other than yellowing, it's in...
  9. M

    Seeking Osborne 1 keyboard latch

    Hi everyone! I recently picked up a bunch of computers in rural Oregon and one of them was a very nice Osborne 1. It's in really great shape with only minimal yellowing. :-) Pics: https://imgur.com/a/e1Bfuix I haven't even cleaned the machine yet -- but have been checking it out. It works well...
  10. M

    Skyles Electric Works KB-74 external Commodore PET keyboard

    Saw this on Ebay and thought it looked interesting: https://www.ebay.com/itm/202406304713 It looks like it replaces a graphics keyboard (Externally) probably for the original 2001 chicklet keyboard. Neat.
  11. M

    DECmate II

    Hey guys, someone here in town is selling a DECmate II. I'm curious about it and wonder if it's something I should even bother thinking about picking up? Pictures: https://imgur.com/a/kc9eQmq The guy says the computer works but the monitor isn't working -- which could easily be the machine OR...
  12. M

    I created some new PET fonts (for the character generator ROM)

    Perhaps first PET fonts created in a 20 years? Or more? Just burn them to a 2716 EPROM and insert into the socket! (or try them out with VICE.) Pics: https://imgur.com/a/GbLPBuz You can download them here: https://drive.google.com/drive/folders/1Pog8_s9oNSaS-szL8SuTX4FjcBBjCX2G?usp=sharing...
  13. M

    Looking for 34 pin floppy card edge to pin adapters

    Hey there guys -- does anyone know a good and cheap source of these adapters? I have been looking high and low to no avail. One place has them for $25 EACH -- which is shocking... Any ideas? It's for adapting Gotek emulators to older machines using the old card-edge connector.
  14. M

    PET ROMs - replacing them all with one 27C256?

    Hey guys -- so in thinking about how to deal with possible bad ROM chips on my 4016 PET, I had a thought. What if I build a 24 to 28 pin adapter board to hold one single 32k (27C256 eprom), load all of the ROM files into it and stick that into an available ROM socket? To do this I would need...
  15. M

    Amiga 500 Gray -> Yellow screen at power-up

    My Amiga 500 has stopped working. On power-up, I get a brief gray screen and then a yellow screen. The power LED flashes 10 times and then the system reboots. (This goes on continually.) Looking online, people say to remove the RAM expansion card. Sadly removing the 512k Supra RAM+Clock card...
  16. M

    Got my first PET today! Well two. Sadly both don't work.

    I was lucky to pick up two PET 4016s today for just $10 a piece! Neither work properly unfortunately. A few more pics here: https://imgur.com/a/0WXaCqO Cosmetically, they are quite good. Stickers are messed up on both of them. One is missing the shift-lock key (plunger is there) other has...
  17. M

    Question: Planetfall rendering issues on Kaypro 1

    Hey guys! I recently added a Kaypro 1 to my collection -- my first dedicated CP/M machine. (And got it for a reasonable $80 here in Portland.) I'm having one issue: I wanted to play through Planetfall on it but it's not rendering quite right. EDIT -- I solved this, scroll down to post #9 for...
  18. M

    Looking for into on a strange Laser Turbo XTSL machine

    Hi fellow enthusiasts! I recently squired a rather strange machine. The chips date this machine from early 1990 and yet it's just an XT. Well, it's a fast one with a 10Mhz 8086 processor and onboard IO and floppy. (No onboard video or hard drive on my model.) I'm kind of surprised under powered...
  19. M

    I replicated PC AT drive rails so you can 3D print your own

    I am building up a system using an old desktop case from the 80s and needed the plastic drive rails like the ones the IBM PC 5170 uses. I only had one in my box of goodies so I designed a replica so I could 3D print more. Thought I'd share: https://www.thingiverse.com/thing:2757830
  20. M

    3D printing TRS-80 Parts?

    I have a crazy thought .... I have a Model III without the floppy drive chassis. I am about to get into 3D printing and was thinking it would be fun and interesting to try to print the drive chassis for the machine. The hardest part will be getting it all aligned since you can't really see...
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