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TapperP

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Posts posted by TapperP

  1. Posted

    16 hours ago, tjcbs said:

    BTW, thanks a ton for helping me to get my personal "crt" pixel shader working in Altirra. 

     

    It might not be to anyone's taste but mine, but I've been having a blast.

    runner.jpg

    monty.jpg

    blue max.jpg

    Looks really cool!

     

    How do you make it look like that in Altirra?

  4. Posted · Edited by TapperP

    4 minutes ago, DrVenkman said:

    The original 9VAC power bricks for the 400/800/1050/1200XL are dead simple transformers - there's not much inside to go wrong, and when they fail, it's either because the fuse inside blew (probably because it was subject to a power surge from house wiring), or because the thing was physically abused and something broke the transformer coil windings. If you have a multimeter, test the PSU and see what the output is. Since it's unregulated, you should get something like 10.5 - 11VAC out of it without a load. That's perfectly fine and expected. 

     

    I have about a dozen of these and all of them are still fine after 35 - 40 years. 

    Ah, great to know. Maybe what I was reading was referencing other Atari AC adapters then.

     

    Just now, BillC said:

    The 800 has a power supply board to convert the 9VAC from the power supply to the 3 DC voltages required by the system, these power supplies are just a transformer and fuse.

    It's some versions the 5VDC power supplies used with the 600XL/800XL and XE computers that tend to fail and damage chips.

    Thank you.

     

    Well, then never mind I guess. 😛

  6. Posted · Edited by TapperP

    So I recently got an Atari 800 and it came with the original power supply. It looks like the one in the photo below. I was just reading that old power supplies can kill the motherboard if they go bad, so what is a recommended new power supply I can buy for the Atari 800? If you have a store link that would be much appreciated. I really don't want anything bad to happen to this computer!
     

    4f5b66312cda7_216025b.jpg

  7. Posted

    On 12/27/2019 at 4:54 PM, doubledown said:

    A printed version would probably be fine, and thicker than the probably vacuum formed "lined" plastic the box had...print time might take 1-3 days, and assuming the printer was big enough for the overall size you wanted. 

     

    The boxed version I have of Robotron: 2084, doesn't have the open-able box with controller holder...so I just made my own controller:

     

    KQT8eU.png

     

    OH MY GOD that is GORGEOUS. I love Robotron and am in awe of that controller.

     

    Any chance you'd build more to sell?! 😛

  8. Posted · Edited by TapperP

    Last week I bought an Atari 800 with CX40 joystick from hursto75, and all went well. Very helpful guy as well, I also highly recommend.

     

    Here is the Atari 800 & joystick I bought last week from him (it is very clean):

     

    Atari800-2020.thumb.jpg.f9237c70a857dcaf83243d052bccb623.jpg

     

     

    • Like 3

  10. Posted

    1 hour ago, _The Doctor__ said:

    If you get an Atarimax Flash Cart, the Atari itself can program/flash the cart without any extra hardware.

    The advantage being some games support tracking your accomplishment or scores and then will save them.

    Wow, that sounds great. Thanks for the info.

  11. Posted

    Such great photos. Sadly I don't think I have a single picture of my good old Atari 800 from back in the day. 😕 I also had an 810, 410, Apeface modem, various controllers, and a big box of disks etc. All long gone into the ether.

     

    I haven't had an Atari computer for nearly 2 decades, but last week I did buy a very nice clean Atari 800 from an Atariage member, and am so happy to have one again. Here is my new little Atari shrine, including a NOS Star Raiders and CX40 joystick (and I LOVE my Atari 810 SDrive Max!):

     

    Atari800-2020.thumb.jpg.f9237c70a857dcaf83243d052bccb623.jpg

     

    • Like 9
    • Thanks 1

  14. Posted

    Please help a newbie.

     

    I just got an Atari 800 48K last week, and haven't used any of this stuff in literally decades. I currently have an SDrive-Max device that runs atr and xex etc.

     

    Can I play Atariblast on my Atari 800? Would I also need to buy a flash cart to do so? Or is this game really only for higher RAM machines (I only have the 800 right now)?

     

    Thanks.

  15. Posted · Edited by TapperP

    I bought an Atari 800 with 48K and a 1050 drive last week from a forum member. It is very nice and clean, but I'm noticing it will crash after a little while. For example I ran Joust (from disk) and let it run its demonstration, and after about 10 - 15 minutes the game will start corrupting onscreen, then just crash to blue screen. I re-seated the RAM and OS modules under the hood, but that has not fixed it.

     

    From my initial tests, it seems cartridge games don't crash, but games loaded from disks do. This made me think I may have a bad RAM board.

     

    I found a RAM test program (https://www.atariarchives.org/c2ba/page015.php) and am using that now to test RAM. It's very, very slow though.

     

    The memory test program is finding errors, but they always say the same thing: "ERROR at 37120 EXP = 106 ACT = 106"

     

    I'm not completely sure how this test program works, but it is now around 400 passes. I have gotten that same error 4 times so far.

     

    Can someone help interpret these results and figure out which RAM module(s) may need to be replaced?

     

    PHOTOS: the first one is the first time I got the error, the second is the 6th time. I'm not sure when this program will be done, but it has been running for hours now...

     

    IMG_2441.thumb.jpg.c432e3e8807f827c1d740e3fbeb21aa0.jpgIMG_2446.thumb.jpg.84d0403147807336c89ffc804c2f3162.jpg

  20. Posted

    2 hours ago, Philsan said:

    Being European, I don't know exactly what would be a fair price in the USA.

    In Europe we have to spend a lot of money because Atari 800 are rare. No problems to find XL or XE machines.

    I think $150 would be a good price but in fact there isn't a price, it depends on items conditions (boxed, working, yellowed?) and on how much you are willing to pay.

     

    If you can, test keyboard and joystick ports, load software from cart and SIO, check video output.

    Thank you for the reply. Unfortunately there is no way to see in person, but the seller is providing photos and possibly video. Asking price is $175, and it is in nice clean condition, but no box or such.

  24. Posted

    Hey all,

     

    I'm an old Atari fan since the 70's. Sadly my Atari 800 disappeared long ago after a series of moves, and as I get older I find myself missing it a great deal. I do still have a few cartridge games for it.

     

    Interested in buying an Atari 800 in excellent condition. Must be fully working, and include AC adapter and preferably video cables as well. Box and any original materials would be a nice bonus but not a necessity. Would also be nice to have some original Atari joystick/paddle controllers in good shape.

     

    Condition means a lot to me, so the cleaner the better.

     

    Please let me know if anyone has such a computer to sell. I'm in USA. Thanks.

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