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yell0w_lantern

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About yell0w_lantern

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    Dragonstomper
  • Birthday 10/01/1977

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    Miki is Back!
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  1. Thanks! I got your files onto my MiSTer and the TI started up perfectly.
  2. Hello, I just got my MiSTer together and am struggling to get the TI core running. I guess there's a command to get the system roms combined into a single rom to use as the boot rom. I don't understand if this is a Windows DOS prompt or Linux or what. Any tips would be greatly appreciated.
  3. Yeah, that's what I've been pestering him to do but he's leery of the ATX psu mod.
  4. I can absolutely take a picture for you but it wasn't a pretty job. Inside the plastic casing was this cellophane-type wrapping and I could not see the fuse through it. I got nervous about slicing that open and I saw a darker spot showing through the casing a little higher up so I thought maybe the fuse was in a different spot on this transformer. When that didn't pan out, I went back down to the bottom and started going further left until I finally could see part of it through the cellophane. Long story short, I ended up removing more of the plastic casing than I would have liked. Any suggestions for patching up that layer of cellophane wrapping and the case? My first thought for the casing was some epoxy clay but I don't like to mess around with stuff that takes wall current until I check it out with the experts.
  5. Took 90 minutes or so but I'm there. The fuse is off to the left and the wire lead on that side is buried in resin as it comes to the bend of the plastic casing. It looks blown alright - there's a blackened spot on the glass.
  6. Okay, I'll try to be extra careful. Sort of shave away left/right from the bottom up.
  7. Hey, guys. :) I see you've met my brother. It turns out I might be pitching in on this transformer surgery. For plastic, my go to is usually a hobby knife with a number 11 blade. Should I ready anything more robust for the patient?
  8. I'm helping my brother look for a unit but many sellers are asking $60 for untested machines (which is code for broken in my book). I would feel better spending less on one that is confirmed broken but is fixable rather than roll the dice on "untested". It sounds like there is a chance the CS errors might not be problems with the machines themselves but if the seller knows enough to even test those then they might really be problems with the machines. All this retro-tech is getting pricey.
  9. There are 2 units on ebay from the same seller. I'm wondering how difficult these might be to fix. Anyone know what these problems might be from or point me to a troubleshooting guide? TI-99/4A BEIGE HOME COMPUTER TESTED FOUND A DEFECT TRYING TO WRITE TO CS2 https://www.ebay.com/itm/TI-99-4A-BEIGE-HOME-COMPUTER-TESTED-FOUND-A-DEFECT-TRYING-TO-WRITE-TO-CS2/264722818076?hash=item3da2b5a41c:g:xBsAAOSwHiBest0g TI-99/4A BEIGE HOME COMPUTER TESTED FOUND A DEFECT TRYING TO READ CS1 https://www.ebay.com/itm/TI-99-4A-BEIGE-HOME-COMPUTER-TESTED-FOUND-A-DEFECT-TRYING-TO-READ-CS1/392790613758?hash=item5b74251efe:g:2rIAAOSwQGpetC-3
  10. Thanks, guys! I found a couple of cold joints and one solder bridge that I somehow missed the first time. Now it's running perfectly.
  11. I have completed the 2 chip internal 32k RAM upgrade on a beige TI-99/4A. http://www.harmlesslion.com/text/TI 32k Mod.pdf Unfortunately, problems started immediately. It began crashing any time between power on and a few seconds later. Sometimes the TI screen would show up and sometimes it would power up to a blank blue screen with a characteristically TI-sounding drone, and sometimes I just got a garbage screen. I went back through all the steps checking with a magnifier to look for solder bridges and the like. I had accidentally wired pin 21 of the CY7C199 to pin 10 of the 74LS00 instead of pin 11. I corrected this but it only made the problem marginally better. I am able to get to the program selection menu about 10-20% of the time and can occasionally boot a game from one of my multicarts. Extended Basic does not start after I select option 2. It just goes to a blank blue screen. Any idea of I fried something besides the CY7C199 chip? Any ideas on how I can track down the problem if that isn't it? Should I remove the mod and see if the TI still works normally without it?
  12. I wanted to try to re-wire a 3rd party SNES controller to use withe the C-64, Sega Master System, and 7800 The plan was to wire the Shoulder buttons for the 7800 (pins 5 and 9 wired through resistors to 8 with pin 6 on the other side of the switch) Y would be the standard fire button X would be wired to 'up' for C-64 games that use up to jump B would be wired as the 2nd Amiga button pins 9 (pot x) and 7 (VCC+5) A would be wired like a Sega Master System Button (pin 9) In the past, I've used switches to move things around but I'm wondering if I could simplify my life. Can I wire this up straight? Should I use diodes to prevent backflow on some of the wires? Should I scrap the idea and just go back to slide switches? Left Shoulder Right Shoulder Up X Left Right Y A Down B http://retro-bit.com/super-retro-wired-controller.html
  13. RF (or preferably composite) would minimize the number of extra things I would have to plug in and hook up every time I haul out the ST. I can use my GBS 8200 to run the ST on my flat screen and that works but the setup is bulky and I have even less room left oon the surge protector to plug in my external Gotek drive.
  14. I have a fairly early NTSC 520; there is no modulator and no hole in the case for one but the board appears to have a space for one and through holes for R, G, B, H-sync, V-sync, etc. So, does anyone know if a modulator can be successfully to one of these ST's?
  15. Yes, it's mostly working now. Occasionally, it goes unstable and freezes for some reason. Even so, I love it! I've always been a fan of this game.
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