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About llopis

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  1. Awesome. Sending you a PM now. Mariano, there are plenty of good Speccys to be had here. Send me a PM and maybe I can help you get one.
  2. I just bought an Atari 1040STE that's missing the Alternate key and the plunger is broken. Does anyone have one I could buy from them? I'm in Spain but I'll be visiting the US in a couple of weeks, so I can have it mailed there if it's easier. Thanks!
  3. :-) The shipping is a bit steep to Europe, but if there aren't any local sources I'll probably get one. Or maybe I'll wait until this summer and get it when I'm back in the US. I've bookmarked the page for now. Thanks!
  4. I reached out to them a couple of weeks ago about getting a POKEY but they never replied. Are they still in business? (Yes, I read their page about having the right incantation in the subject line). Any other sources for a POKEY chip? (especially in Europe).
  5. I'm looking for an UnoCart and I'm based in Europe. Where's the best place to get one? Thanks.
  6. Very useful stuff. Thanks everybody. I'll give it a try and see how it goes.
  7. I have some 600XL that have some ugly metal keys and cartridge doors. I'm guessing those parts are brushed aluminum, right? Any tips to restore them? It looks like they've gotten some kind of oxidation, and they're not smooth to the touch.
  8. Hi, I'm looking for a POKEY chip. Would you be willing to sell that one individually? Send me a PM if so. Thanks.
  9. I realized that the 800XL shares a lot of chips with the 600XL, and I have several of those around. So I first changed the BASIC ROM and... nothing. Then I changed the POKEY chip and... bingo! That was it. Also, for completeness sake, I tried turning on the computer with a working POKEY and without a BASIC ROM, and it went straight to the self test. Good to know for the future. Now off to see of POKEY chips are easily available to purchase. I have a bad feeling about any chips with proper names :-b
  10. That's right! I remember counting and the BASIC ROM not being 28 pins. It's 24. Of those, only the POKEY chip is socketed. I took it out and put it back in again, but there was no difference. Could still be the POKEY even though cartridges load fine?
  11. Doh! I can't believe I didn't try that :-) The cartridge loads fine. I tried that, but it didn't do anything.
  12. I have an Atari 800XL in good apparent condition. When I turn it on, I get the normal blue screen with the dark border. I even get as far as getting a block cursor, but I never get the normal READY message. Any idea what might be wrong? Without knowing much about it, I would think the BASIC ROM, but someone will probably have a better idea. A couple pre-emptive questions: - If it's the ROM, I saw it's a 32-pin IC, so it's not a straightforward substitution with a 27C128. Any idea what kind of EPROM I could use to replace it? - Is there a repository of preserved system ROMs for Atari 8-bit computers somewhere? Thanks!
  13. OK, final update on this: I tested the rest of the Atari 600XLs that I had and they all sync reasonably well in that V-L range (instead of the normal UHF range). The image quality in all the other one was much better than this one I was testing. So I put this one back together, put all the shielding, screwed it back up, put the keyboard back and... it actually looks pretty much like the others now! So I guess there were two things going on: - Using the right frequency to tune to (although it was weird that it was tuning enough to see it and for the TV to detect it in the UHF range) - Not just putting the shielding back on, but screwing it and putting the keyboard back on. I learned a bunch of new things about this system already :-) Thanks for everybody's help.
  14. Ah, interesting! So the correct tuning should be in the UHF area, like most other computers then (that would be the first picture, barely visible). I did try it with the cover and the shield back on, but it didn't make any difference. I'll try it again today when I put it back together. I was the one who removed the cover of the RF modulator to see if there was anything obviously wrong inside. What do the two adjustable coils do in the modulator circuit? Do they just vary the frequency of the modulation, or is there something more to it? I didn't touch them yet, but maybe I should. And I'll try removing the C109. Thanks for the tip!
  15. Really? That's weird. I mean, the Atari 2600 has a much better picture than that using RF. I'm surprised to hear they went backwards in quality there.
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