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  1. Redherring32

    Worklog N64 Tríos -- a 3x3 inspired motherboard redesign.

    Oh no, 2 name drops in 1 thread. I have become infamous.
  2. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    I only polished with abrasives.
  3. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    A genuine PPU has a die that's about 3.65mm square, the clone (TA-02) I ground down however has a die that's about 5x4.5mm. While a 10x10mm cut will work on a genuine chip, it is not sufficient for clones. The bonding wires attach roughly 0.3mm from the tips of the leadframe leads, so I...
  4. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    Yes, I believe the clones have a slightly larger die, so I don't believe the 10mm cut will work, but maybe 11 or 12mm? I have a TA-02 clone PPU, and the die is definitely larger. I'll get some measurements later today if I can find it. And I'll share my methods for determining where to cut as...
  5. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    Hey guys! While I've not been able to devote much time to the project lately, I have been chipping away at the smaller stuff. If you've seen my 8bit power reduction thread, you will probably have figured out I'm looking into undervolting the NES hardware down to 3.3V to significantly increase...
  6. Redherring32

    Guide Power draw reduction of 8bit devices

    Hey guys! As some of you may know, I've been working on a NES handheld for a while now. Well today I wanna share something I've been researching and implementing to make it just that extra bit better. We should all know by now that the NES uses a 6502 based CPU with a built in APU, but the...
  7. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    The audio and video signals are amplified and sent to the speaker and screen respectively. Other than amplifying the original signals, I'm not doing anything to them.
  8. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    Just wanted to share a little update, finished a successful test print/fit, and *almost* everything fits perfectly first try. Just got some more testing/assembly to do on the charge/boost PCB, and 1 more revision on the main motherboard, then we hopefully should be set. I did fry my CPU with...
  9. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    The TinyTendo motherboard is 4 layer, yes.
  10. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    The cut chips don't mount to any standard package footprint, the footprint is one I designed for the purpose. Here's what it looks like: And here's the leadframe of the chip that mounts to it:
  11. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    Hey guys! Been a long time since I posted an update, mostly cause I'm just bad at keeping up with this stuff. Anyway I wanted to share the large amount of progress I have made since the last post! The motherboard has seen a redesign to incorporate the CPU and PPU directly on the PCB, as well...
  12. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    Been making slow progress, but I have commenced work on the shell design.
  13. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    I will be using a 0.8mm pitch 80 pin edge connector which will allow me to make compact custom cartridges. It's maybe not elegant, but all of the more common mappers will compress down quite well, which is fine cause they're all I can afford. :)
  14. Redherring32

    Worklog TinyTendo - an absurd NES handheld

    Well I've never done a worklog before but the great Shank demanded I do one so here we are. TinyTendo is my admittedly overly ambitious attempt at making a NES handheld in an original GameBoy form factor, which breaks conventions on how small a real NES can get. TinyTendo will utilize a...
  15. Redherring32

    Worklog XboxPSU

    Someone took some real world power draw measurements for both a 1.0 and a 1.3, they can be found here: https://xboxdevwiki.net/Power_Supply#Real_world_power_usage Hopefully that helps.
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