William D. Jones@defparam Hi, I know it's been a while and I hope all is well. And this is a stretch. But do you have any SNES Expansion Headers left?
https://github.com/defparam/snes-exp-bridge
(I'll have to look into making/soldering my own if not)
@defparam The goal here is that "I want to create a firmware to load my homebrew without having to carry around an SD card back and forth.
I want to evaluate all my options for doing this with Super Everdrive X5 (no USB port).
Chartreuse@cr1901 @defparam Another option could be to make use of the second controller port to transfer data. The controller protocol is just a 16-bit shift register (like a pair of 74HCT166's fed parallel data).
It wouldn't be the fastest due to the rate the SNES reads the port, but would be viable for not needing a expansion port or custom cartridge.
d3fp4r4m@ChartreuseK @cr1901 yup! Good callout. This was exactly what Near had done before consulting me to build the expansion port devices. They had a breadboarded device built to stream out ROM data from the the controller port, but as you pointed out it was too slow for their usecase