Control unit
127
14
.01.02
Basic control unit A20
Pin assignment
X103 (COM1)
X101 (COM2)
PIN Signal
PIN Signal
1 Vterm1 ................. 6
2 RxD ...................... 7
RTS
3 TxD ...................... 8
CTS
4 9
Vterm2
5 GND
Supply
Flat cable fl oppy
PC 104 fl oppy
Boot stop
Supply fl oppy