Sorry... I´Only speak in spanish...

You can conect, a external keyboard fron your A1200, only need five wires

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[generic]                  281     446  63.0% -lh5- 9631 Oct 27  1996 A500key1200.leeme_Torpedo
[generic]                  192     269  71.4% -lh5- 634e Feb 15  1997 A500key1200.readme
[generic]                 3924   17118  22.9% -lh5- dc8f Aug  7  1996 Circuit.iff
[generic]                 3844   15058  25.5% -lh5- 2478 Aug  7  1996 Keyboard2000.iff
[generic]                 7048   46952  15.0% -lh5- 3b83 Aug  7  1996 keyboard500.iff
[generic]                 2742    5824  47.1% -lh5- d7d1 Feb 15  1997 keyboardA500.doc
[generic]               145526  190568  76.4% -lh5- f582 Aug 11  1996 Photo.iff
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total         7 files  163557  276235  59.2%            Apr 22  1997