Building a Custom 24-bit USB-to-CRT Display Adapter for Arcade Machines
By
evakhoury
A five-star bake. Worth schmearing, sharing, saving.
Summary
A detailed technical project documenting the creation of a custom 24-bit CRT display adapter for an arcade machine. The author describes building a hardware interface that connects a computer via USB to drive an original arcade CRT display, including designing the circuit, implementing video signal generation, and overcoming technical challenges with timing and signal integrity. The project involves reverse-engineering the display requirements, creating custom PCBs, and programming an FPGA to generate proper video signals for the arcade CRT.
Key quotes
· 5 pulledHe wanted to leave the original CRT in - which I think is a great choice! - and drove it off of a Raspberry Pi.
Off-hand, I mentioned that I could build a CRT display adapter that interfaces with a normal computer over USB. This is that project.
The CRT in the RCade has a JAMMA connector, and Frank bought a converter that goes between VGA and JAMMA.
I decided to build a 24-bit display adapter that could interface with a computer over USB and output the correct signals for the CRT.
The biggest challenge was getting the timing right - CRTs are very particular about their sync signals and pixel timing.
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