Subject: Re: Game port
From: david@uow.edu.au (David Wilson)
Date: Wed, Dec 23, 1998 17Ç5 
Message-id: <david.914457953@wraith>

Rubywand <rubywand@swbell.net> writes:
>     Okay. Thanks for correction. How about this ...

Getting closer.

> DB-9 Female Socket on Computer      DB-9 Male Plug on Mouse

Those should read DE-9. DB-9 does not exist :-)

Looking at the //c technical reference I found that pin 4 of the DE-9 (XDIR)
can be read as a digital signal at $C066 in place of the non-existant PDL2.
Pin 8 (PDL1/YDIR) can be read digitally at $C067 in place of PDL3. These are
standard TTL inputs (to a 74HCT251) so may not have the same limitations that
the other digital inputs have.

--
David Wilson  School of IT & CS, Uni of Wollongong, Australia  david@uow.edu.au