Rich Mellor wrote:
> Can someone please clarify the wiring on the QL Serial ports on the
> German and US QLs where a 9 Pin DIN was used instead of a BT style plug?
>
> Dilwyn's site says that the same pins were used as on the BT style plug,
> but GND (pin 1) appears wrong:
>
> 1 GND signal ground
> 2 TxD output
> 3 RxD input
> 4 DTR (=RTS) ready output
> 5 CTS ready input
> 6 - +12V
Just got home and yes, that is right - well at least for the German QL.
The US QL just has to be the same.
What a pity.
Tony
>
>
> I am asking as someone in the USA needs a printer serial lead to connect
> their QL and Sinclair QL-800 Printer. I was wondering if I could use
> the Z88 serial lead, which is wired as:
>
> 1 - unswitched +5v at 10 uA output
> 2 TxD transmit data output
> 3 RxD receive data input
> 4 RTS ready to send output
> 5 CTS clear to send input
> 6 - reserved for future use
> 7 GND
> 8 DCD data carrier detect input
> 9 DTR switched +5v at 1mA output
>
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