what about a voltage controled crystal oscillator with a high Q … could be used as a frequency genorator
and with a comparitor could be used to boost oscilloscope to 10 mhz or even very much higher
there would need to be more arm code added to be able to utilize the oscillator and maybe use some of the
unused stm32 pins
so 10 to 1mhz in usual mode then jump to oscillator mode when you need to use it …trying to leave
everything on the board alone as much as possible …
I like the idea of another probe somehow MODed into the DOS