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Ok, got some housekeeping stuff out of the way. Confirmed some of the display corruption I was seeing on the front panel was due to overflowing the SPI FIFO when data came from the FPGA too fast, but I had plenty of RAM so I just made the FIFO a bit bigger and the problem went away.

Also made the SPI class have compile-time variable FIFO sizes which will simplify things a bunch.

Still probably going to have to make some tweaks to some of these peripheral drivers to make things nicely integrated without adding too much overhead. It's going to be a process.

Anyway, the elephant in the room is OTA firmware update via SFTP. This is going to take some time to get right.

Before I work on that I have a few other more small yaks to shave, like https://github.com/ngscopeclient/scopehal/issues/866.

So I think that ticket will be the next focus, it should be straightforward.