Blueprint

Custom VGA gpu

A custom gpu i want to make to learn how gpus work.

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Minecraftchest2 Minecraftchest2 added to the journal ago

Set up the schematic for the Vertical sync

Like last time i just needed to place and wire the parts for the vertical sync based on the preexisting schematic.
I Figured out that if i open the image in a new tab it makes it easier to zoom in and see the wires. So it was easier for me to do this one the the horizontal sync because i knew more what i was doing.
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Minecraftchest2 Minecraftchest2 added to the journal ago

Set up the schematic for the Horizontal sync

I figured out what parts i need to do for the Horizontal sync circuit and did the full routing for the schematic.
Sense i am using Ben Eater's schematic for the GPU then making the PCB and case for the GPU i just needed to place the symbols in the right place and wire them together properly.
Took me longer then i would like to admit to figure out how to make wires with nothing on either end. Screenshot_20251007_200756.png
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Minecraftchest2 Minecraftchest2 added to the journal ago

starting Resaerch for general parts list.

I started work on getting all the parts i need onto the schematic and will work on moving them onto separate sheets later so i can easily know what sheet is doing what.
It went pretty well especially after i figured out that 2 of the chips i was trying to add where split into multiple parts.Screenshot_20251006_211927.png

Minecraftchest2 Minecraftchest2 started Custom VGA gpu ago