Of course there is

Assuming you already have an Keyboard adapter like PCKey-1200
you only need to do 2 things in order for it to work...
1st: Break/cut carefully the little plastic pin on the PS2 connector, since the plastic is kind lower than all the other PS2 connectors. (Other pins match just fine - only the plastic doesn't fit)
2nd: Modify the internal keyboard connector (where the cable starts). This modification is done as following:
- Unscrew and open the case.
- Find the connector where the cable is located.
- Switch leads 1 with 4 and 2 with 3. (Just use a sharp knife or a needle to pull it out)
- Close the case.
- You're set

I made the same modification in my own CDTV Keyboard that worked like a charm on my A1200 with PCKey-1200!!!