I believe there was a hack to make an A2000 keyboard work,
and if I remember right the shortcoming was the three finger
reset sequence didnt work with any hack because the 2000 reset logic was on the motherboard, the 500 and 1000 was on the keyboard itself. Dont flame me if I'm wrong 'cause its
been a decade since I faced this issue.
I know there were ps2 to a2000 adapters and you might be able to hack a work around.