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cbmeeks

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About cbmeeks

  • Rank
    Dragonstomper
  • Birthday 06/18/1973

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  • Gender
    Male
  • Location
    Soddy-Daisy, TN
  • Interests
    Metroid, retro computers and consoles, beer, 8/16bit gaming. Arduino, electrical engineering.

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  1. That's a good one! However, that guy with the beard...can he even open his eyelids?
  2. I have three 1040 ST motherboards but only one of them has an RF modulator. The board I want to use (accepts blitter, fully populated, real-time clock, etc.) does not have an RF modulator. I don't own an Atari ST monitor and the only real thing I want to do with it is play games. I've built my own S-Video adapter for the Amiga a while back and I'd like to do something similar with the ST. VGA would be ideal...then S-Video and finally composite if need be. But my research has left me head scratching as there seems to be countless variations of what works and doesn't. Anyone have any suggestions? I have one of those GBS-8220's but it was garbage when I used it for my Amiga. I assume it's just garbage all around. I even have some AD725's that I could possibly use if there was a circuit out there somewhere I could build. Thanks for any suggestions.
  3. Yep. Just recapped morning Amiga 1200 and Amiga 600 recently and they almost look factory. 🙂
  4. Thanks for the info. Yeah, I’m certainly a Commodore, TI and Apple guy. Trying to learn more about Atari. So is there any real benefit to adding the blitter? I like the idea of a maxed out STFM but if it’s like a Porsche that sits in the driveway then what’s the point.
  5. I have three different 1040ST boards. Only one has a modulator. Two of those boards have an empty socket for U66 (Blitter). If I were to buy a blitter and put it in, do I now have an STE? I'd like to max out one of those boards and make it my "every day" ST. I can post pics and revision numbers if needed. Thanks for any guidance!
  6. Thanks, I will check that out. So I found out that it only shows that line when connected to my Apple II monitor (which works great). When I connect it to the original Tandy TRS-80 Monitor, I get the pics below. I have tested the frequencies with my scope and came up with the following...I think the video chain is close but not perfect. The end result is *ALMOST* 60Hz.
  7. Hello all. I’m restoring a Model 1 TRS-80 and the first issue I came across was the picture is nothing but a thin horizontal line across the screen. I have checked the voltages and I believe they are OK. However, some are a little low (checked Z1 and Z2 and some 5V show 4.6V). I have the manual that talks about the video divider so I thought I would put a scope there and check the chips. Any idea where to start? Thanks!
  8. I have this disk with a few BASIC programs I wrote (DOS3.3) and on it, I had two programs named "HELLO". One was "HELLO" and the other was "HELLO CBMEEKS". I wanted to replace both of them so I deleted them both and then wrote another small program. I saved this program as HELLO. I can run the program and it works. I can manually load it and it works. But when I reboot the computer with the disk in the drive, I get a "FILE NOT FOUND" error. What am I doing wrong? Thanks.
  9. Thanks for asking. I'm going to hang on to it for a while and see if I can fix it myself. I have some other A2 equipment (such as loose boards and broken cases) that I would eventually like to restore to a working unit.
  10. Another Phoenix rises from the ashes. 🙂 Well, maybe not that dramatic. But I'm so pleased with this restoration that it has actually replaced my normal "daily Apple IIe". First, a little background. I own several Apple II's (II+, IIe, IIgs and IIc). About 10+ years ago, I bought two IIe's from eBay for very little money. One had missing keys (the one I just restored) and one had all of the keys, but was yellowed. At the time I bought these, I had already had another IIe that was in pretty good shape and I just used it as my go-to, every day IIe. I then put the two purchased IIe's in a plastic box and out in the storage building for literally 10+ years. This building was not climate controlled and I always felt bad about that. Last September (2019), I moved into a new house that has a garage. While the garage is not climate controlled, it doesn't suffer the same heat temperatures that other building did. So now my entire collection is under the same roof. Friday I was going through some of my boxes when I came across these two IIe's. I knew they were bad but I didn't have a full idea how bad they were. In fact, the rubber feet of one melted over the years and actually ran down the side of it and the other one. The amount of dirt and grime was terrible. So, I thought to myself...why not pick one of them and restore it? Since we're all home-bound anyway, it might turn into a fun weekend project. So that's what I did. I picked the better one of the two and focused on it. Now I must admit, this isn't the worst computer I've ever seen or restored. But this is the worst one that I've owned and knowingly let sit in that condition for so long. But since I had so many other Apple II's, I just didn't bother taking the time. First thing I did was take everything apart so that I could test the PSU. I forgot to take pictures of the PSU separated but before I put power to the board, I tested all of the voltage. Fortunately, everything tested out great. Also, I actually have a new ReactiveMicro PSU that I eventually swap out to put in this one. On power up, I get an error. A ROM: E10 error. Apple makes this easy to figure out. But I checked my handy-dandy repair guide and sure enough, the ROM appears to be bad. So I went to my other IIe (that is really yellowed) and pulled that ROM out and put it in this computer. SUCCESS! Feeling good about this unit, I went into cleaning mode. I also replaced the rubber feet. I only had clear feet but at least they were new. The keyboard is not fully working. Plus, it's missing keys. So I decided to swap the other keyboard from my yellowed Apple (which is slowly becoming my "parts Apple"). However, I like the large Apple keys of this keyboard so I brought them back. 🙂 I have many more pics but here are some finishing shots. Finally, here's a side-by-side comparison of my previous "daily Apple IIe" next to my fully restored one. Guess which one is my new fav? Also, I can't believe how white it is. I should mention that I did NOT retro-bright any of this. It's still that white. I'm really thinking that's the original color but I'm not sure. Also, I believe this is an older unit than my other one. The case is slightly different in design and has the plastic "velcro" for the lid. Also, every one of my IIe's have a massively yellowed space bar. In fact, my older space bar is slightly less yellow so I might swap it out. Comments welcomed!
  11. I talked to Mechner a few years ago on Twitter when he learned I still played PoP on an actual IIe. He couldn't believe that people (at the time) still used those computers. He's hardly a historian or authoritative figure when it comes to vintage computers. I agree with your statements. I think he's a good person (from what little I know) but if you look, he comes out of hiding every 5 years or so to promote his book(s). A few years ago (I think it was the 25th anniversary) he released his book on the making of PoP (which I bought). I think people (like me) still assumed he would be an Apple II fanatic to this day. But he's not. Also, I've often wondered why 128 KiB could barely handle PoP. Even though I'm a developer by profession, I've never thought that PoP would need that much RAM. Especially since it's not a single load. I know there are a lot of frames of animation but only in the main character (plus the enemies but much of that could be reused).
  12. Hmm. I know on some revisions of the IIe (and different ROMS) not having the keyboard in it will cause a continuous beeping and garbage on the screen. But that doesn't seem to be the case for you. I'd suggest swapping out some of the ROM chips from the different boards. Also, have you confirmed the four voltages from the PSU? You should have a +5, -5, +12 and -12.
  13. I absolutely second a modern PSU. Please don't use the original one as they are notorious for destroying C64's.
  14. I have a C128 PSU at home. If I can remember, I will take it apart and snap a pic.
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