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About TheProgrammerIncarnate

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  1. Here's a picture of the underside, which has labels. Regarding rotation of the plugs: one side is flat while the other juts out. The side that juts out is supposed to face away from the camera in your image, so it latches with the socket.
  2. Thanks! It is kinda amazing how little info some of these chips have. Like the Submarine chip, I only found one video besides yours of it online! Thanks for reminding me of that! I just added a link on the wiki page.
  3. The AY-3-8500 now has a MiSTer core based on die photos!! I've also been working on other things, such as highlighting chips automagically with a soft AI. https://nerdstuffbycole.blogspot.com/2020/01/end-of-year-update.html
  4. Power it up, then press the reset button a few times. If no sound comes out then the issue is most likely with the custom IC inside it. It doesn't have a ROM or program, rather discrete flip-flops, counters, and latches crammed into a single chip.
  5. As the MPS7600-001 has been decapped, so it can and will be eventually converted into a FPGA, which could be put into a repro cart #1. All other carts use different variants of the 7600, which have not been decapped yet. I'm not confident that a reproduction would fix the bugs you've described, as they're most likely exist in the design and not from a damage to the actual chip.
  6. Yeah, I can confirm from looking at the die that it's a custom micro-controller with a ROM on board. Interestingly it's not 512 bytes, it's actually 256 13-bit words of programming, plus a bunch of large lookup tables that hold other data. I'm not entirely sure about that as it's not been simulated though. Also, there was a 5th and 6th cartridge advertised? I've never heard of that! Do you know where one can find more information about those?
  7. The MARIA-related thread was last bumped in 2010 while this one was more recently active so I posted it here. The GTIA, MARIA, TIA are all in the same vein of Atari custom graphics chips. No biggie. I heard somewhere that Curt was hesitant to release files because he gave them to someone in the past who used them in something closed in proprietary. No idea if that is true or not. Anyway, he shared them with me and Alan S. (not on AA forums) because Alan was wanting to improve the 7800 core for the MiSTer project (an open FPGA emulation system) and because I've been working on automatically turning layout information into schematics/verilog in my own project. I agree 100% that they should be freely available, but I'll wait till Curt decides that they should be. Perhaps a GPL-esque license would ensure they are only used in open projects.
  8. Curt just released the schematics here. He also shared the GDS files with me in hope that I could help convert them to verilog. Unfortunately I've been unable to open them as they're an older format of GDSII files.
  9. Got the AY-3-8605 "Sea Battle" chip in a simulation and generating screenshots. I don't think there's been any form of emulation prior to this. https://nerdstuffbycole.blogspot.com/2019/10/shooter-game-in-silicon-inside-ay-3.html
  10. Hmm... The Odyssey 4000 apparently uses a AY-3-8600 game chip, with color from a AY-3-8615 chip. According to the databook (page 486) video out on the 8615 is pin #5, you tested this one, right? Besides that there are a few traces between the two chips, and the clock signal circuitry (if the game plays then the clock circuitry should be fine.) Also, what thread did you base your composite mod on? It may be that the 8615's outputs need amplification or adjustment before the TV can process them.
  11. Interesting observation! Perhaps one of the pins on the 10 game chip served to downgrade it to a regular Super Pong chip. So they could sell Super Pong & Super Pong 10 systems with the one chip once it came out.
  12. Here's the picture of the upper-right corner. I think I labeled all hidden/obscured parts. Also, the speakers are 0.2W, 8 Ohm for the record. Unfortunately I'm going to be away from home again so I won't be able to properly inspect those pots or inductors. Just mark them with "untested" for the time being. Also, I'm going to store the schematics in my 1st gen game system REing git repo, you won't mind as long as I credit you?
  13. Ok I confirmed the values of everything except stuff in the far upper-right. There's a close-up of that region, so I'll mark that picture instead as this one is blurry and has things in the way. A few things I wasn't able to confirm/find out values on: the two inducters/coils inside the modulator, the two inductors to the left of the power switch, and "L1" which appears to be a ferrite choke. None of these had values on or near them. Two of the dark brown film capacitors & a transistor inside the modulator were too tightly packed for me to read their values. The transistor is probably a standard or video-specific NPN, while the capacitors are probably "39" (nanofarads?) like all of the others of that type. Lastly the two blue pots don't have values on them and appear to have been set at the factory, as they've been glued in place. I also found the manual in slydc's archive, cleaned the controllers, and took some notes on the gameplay. That'll be useful for whenever I start looking at the AY-3-8700's die.
  14. Second picture? There's only one up there. I'll get back to you on the trim pot.
  15. Here's your picture with the values filled in. I just noticed that all of the green capacitors (except the small one in the upper right) are 0.1uF. Sorry for the late reply, I've been busy.
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