kenames99 Posted September 30, 2021 Share Posted September 30, 2021 hi, I am wondering if anyone has a better photo of the 80 column video board for the 1090XL? I have found some rather poor photos but not really good enough to see any real detail. below is the best photo I have. any help appreciated. Ken 2 Quote Link to comment Share on other sites More sharing options...
Irgendwer Posted September 30, 2021 Share Posted September 30, 2021 Not really better, just a still from here: https://youtu.be/gPB0s82vtuc?t=18 The schematics are not descriptive enough? Quote Link to comment Share on other sites More sharing options...
kenames99 Posted September 30, 2021 Author Share Posted September 30, 2021 hi, the chip placement is what I am after. the Ux or Uxx designations are not readable on the original photo I posted above. I have the schematic done. it is in kicad eeschema format. now I need to lay out the board, but chip placement is the problem. the still you posted helps some. I can read some u numbers. thank you. I can also trace some board traces if I have to, but that is kind of hard to see also. Ken Quote Link to comment Share on other sites More sharing options...
+kheller2 Posted October 1, 2021 Share Posted October 1, 2021 Isn’t there one of these at some video history museum, with all the other 1090 boards and a 1450XLD? Quote Link to comment Share on other sites More sharing options...
kenames99 Posted October 1, 2021 Author Share Posted October 1, 2021 1 hour ago, kheller2 said: Isn’t there one of these at some video history museum, with all the other 1090 boards and a 1450XLD? I have not been able to fing anything. between the picture Irgwender put above and the one I have and some circuit tracing, I think I have it lay'ed out. thanks for the suggestion tho. Ken Quote Link to comment Share on other sites More sharing options...
+mytek Posted October 1, 2021 Share Posted October 1, 2021 Just curious, do you have the ROM dump for this board? Hopefully you do, since trying to code something up from scratch would be a major challenge Quote Link to comment Share on other sites More sharing options...
+MrFish Posted October 1, 2021 Share Posted October 1, 2021 4 hours ago, mytek said: Just curious, do you have the ROM dump for this board? Hopefully you do, since trying to code something up from scratch would be a major challenge The ROM's are available at Atari Museum. 1 Quote Link to comment Share on other sites More sharing options...
kenames99 Posted October 1, 2021 Author Share Posted October 1, 2021 hi mytek, yes I do have the roms and pal/gal logic. I mirrored atarimuseum website before it went offline. Ken 3 Quote Link to comment Share on other sites More sharing options...
+MrFish Posted October 1, 2021 Share Posted October 1, 2021 3 minutes ago, kenames99 said: yes I do have the roms and pal/gal logic. I mirrored atarimuseum website before it went offline. I got them using the wayback machine. 1 Quote Link to comment Share on other sites More sharing options...
kenames99 Posted October 2, 2021 Author Share Posted October 2, 2021 yea, I had it crawl atarimuseum too, one last time I thought. 1 Quote Link to comment Share on other sites More sharing options...
+David_P Posted October 2, 2021 Share Posted October 2, 2021 Might also be worth asking @bob1200xl what he's got hidden away... Quote Link to comment Share on other sites More sharing options...
+bob1200xl Posted October 3, 2021 Share Posted October 3, 2021 I no longer have any 1090 parts. Never did have much, actually. Bob 1 Quote Link to comment Share on other sites More sharing options...
kenames99 Posted October 4, 2021 Author Share Posted October 4, 2021 that was a good idea David_P. and thank you for the quick reply bob1200xl. Quote Link to comment Share on other sites More sharing options...
kenames99 Posted October 6, 2021 Author Share Posted October 6, 2021 hi everyone, I have the 80 column video board entered into kicad. a pdf is attached here. anyone that would like to check over my work then please do. any mistakes I made? please feel free to let me know. I have included the original Atari 80 cvc schematic so nobody has to go hunt it down. thank you. Ken 80cvc_schematic.pdf 6 Quote Link to comment Share on other sites More sharing options...
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