WTB: raphnet ps1/2 to saturn adapter/converter

I already own a tototek ps2 to saturn adapter but the button mapping is not useful for me and I can’t change it as there’s no option to.

Anyone got a Raphnet brand or something similar where I can button map the common:

X y z
Square triangle r1

A b c
X circle r2

Not bothered about the other buttons L and R and L1 L2 as ive removed these from my hrap.