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Everything posted by hueyjones70

  1. Nevermind, I found out that there were two pegs in the center of the long sides that were held together by friction only. Gentle pressure with a flat blade screwdriver got the pieces to seperate.
  2. Does anyone know how to disassemble an Atari tracball? I have removed the screws from the four corners but something is silll holding upper and lower cases together. I need to give it a thorough cleaning.
  3. The 512K memory upgrade, operating in the 256K mode will allow an 800XL equipped with Omniview80 to run the 80 column version of Atari Writer Plus. I also have a 1200XL that has been modified with the 800XL OS and Omniview 80 that will run AW+80. After posting this I found where Nezgar had posted similar information.
  4. Thank you for that file. When I configure the RAM to 256K the 800XL acts just like a 130XE. I can run a Newell modified version of Atari Writer Plus that was written for 80 Columns using OmniView80 and the very old SpeedScript character font. The Rambo and Wiztronics upgrades don't use separate Antic access and the program will not run with them. The Newell 256KXL memory upgrade will run the program but they are very rare. I have only had two since I have been tinkering with Ataris. I still have one and I sold one. (BAD MOVE). If I can get this memory upgrade to work on the 1200XL I will have IMO the perfect Atari machine.
  5. I did fly hueys for 25 years in the Army & National Guard
  6. What response is the target query looking for?
  7. Thanks for this, I believe it is just what I need. Can I copy a file from an XDOS disk to a DOS 2.5 disk..
  8. OK, by numerous attempts using trial and error, I figured out why I couldn't get to BASIC. I was operating in my OMNIVIEW 80 OS and there was no BASIC. I still don't know how to use the XDOS commands. I would like to be able to copy files at least.
  9. I have installed the 512K RAM upgrade in an 800XL. I would like some help in using the commands to change the configuration from 512K to 256K. I have downloaded the file containing the files and I have loaded the ATR onto a S-Drive. I have even loaded the file on the 800XL. That is where my success stops. I do not know how to get out of the XDOS environment back to BASIC or to anywhere else. I am not familiar with XDOS. I have downloaded all of the information I could find with the DOS commands. The only thing I have been able to do with the DOS is load the menu.
  10. I would like to buy a 65XE case or a non-working 65XE for parts.
  11. I would like to get a Newell 256KXL memory upgrade for a 800XL. I would also be willing to trade an 800XL with a 512K memory upgrade and supervideo 2.1 upgrade for an 800XL with the Newell upgrade.
  12. I checked my setup with MYDOS 4.2 and it showed 1522. I checked my 128K 130XE and got the same number. I am not sure if everything is working as it should. I had to follow the 800XL instructions.
  13. This is slightly off topic but I have the 512K memory upgrade installed in a 1200XL that has been modified to use the 800XL OS. When I set up a RAM Disk, how many sectors should the RAM Disk have?
  14. I bought another 1200XL on eBay for $150. Computer has good picture with composite video. Keyboard doesn't work. I suspect that a good cleaning will have everything working. I will connect the chroma, add 5V to the SIO, and probably do a Super Video 2.1 upgrade, and the 800XL conversion.
  15. If he would put this on the open market he would make some sales.
  16. Are there any instructions anywhere for a video upgrade such as SV 2.1? Do the video components match up with the 130XE?
  17. If you want to repair the existing video output you should check out the SuperVideo 2.1 modification.
  18. I have a UAV installed, I removed it for the picture. I chose not to install the CV disable switch.
  19. In an earlier post I mentioned that I had performed the SuperVideo 2.1 upgrade to a 1200XL and it didn't work out. I did go back over my work and I even reinstalled the parts that were taken out. I did not use the old parts but installed new capacitors, resistors, etc. When I finished, I still had no video so I went back to the SV 2.1 and performed all of the steps again. NO VIDEO/NO BOOT Then I installed the UAV and everything works with the UAV just as it should. I am attaching a picture just in case someone with SV 2,1 experience might take a look to see if there is anything obvious such as wrong part removed and/or replaced.
  20. Two weeks ago I attempted the SV 2.1 upgrade on a 1200XL and when I finished, I could not get any video, no luma, no composite, no chroma. I checked all my work for solder bridges, missed components etc and found nothing so I installed a UAV. This week I started on another 1200XL and I went component by component and checked the video after every component. Initially, I lost video when I removed CR20 so I replaced it. I lost video again when I replaced R23 (180 OHM) with a 75 OHM resistor. (The mod calls for a 120 OHM piggyback but the result of that would be 72 OHM) I thought maybe if I finished the mod, the video would come back but it never did. I then removed the 75 OHM and replaced it with a 200 (I don't have any 180s) and I got video back. It is lousy video. I am going to recheck my components to make sure that I didn't use an incorrect resistor somewhere. Is anyone aware of any mistakes that were made in the written instructions. I have successfully done this mod before but it has been several years.
  21. I bought one several months ago on ebay and it didn't work until I peeled off the mylar and cleaned everything with alcohol. Then it worked perfectly.
  22. Ambery makes good stuff. I bought an Ambery converter to convert S-Video or composite to HDMI.
  23. The UAV worked out great. I guess prefer the component by component method for the same reasons a person would choose to make a cake from scratch instead of using a mix. Another reason is that I usually buy these computers on eBay, refurbish, modify, repair, and upgrade them for resale. The cost of the components is probably less than $5 and I can resell them for less and still make enough profit to indulge my hobby.
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