almanach keyboard

XT keyboard (DIN)

1 CLK/CTS (open-collector)
2 RxD
3 RESET
4 GND
5 +5V


AT keyboard (5pin DIN, PS/2)

1 CLK/CTS (open-collector)
2 RxD/TxD/RTS (open-collector)
3 Not connected or Reset
4 GND
5 +5V