That explains it, and the SC-01 and the SC-02 are similar but not compatible.

I was able to find a video that has the mockingboard speech, and Willy will say "Oh wow" "Alright" and "Help".

Hex Luthor will say "Greetings computer nerds". (at the 18:15 mark) I thought this was pretty funny.

"prepare to enter keyboard, ram, power disk drive"
"prepare to enter the digital dimension"
"willy byte in the digital dimension"

(playthrough starts at 10:56)