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Re: Game port

Subject: Re: Game port
From: david@uow.edu.au (David Wilson)
Date: 1998/12/24
Newsgroups: comp.sys.apple2
Organization: University of Wollongong, Australia
References: <367C206E.7C6FFED2@cyberhighway.net> <367C41C1.751DC19C@cyberhighway.net> <367C9297.41580E52@swbell.net> <367CC1E9.1D1C7356@cyberhighway.net> <1dkd6b1.j7kiko1m9m3n2N@dempson.actrix.gen.nz> <367DD123.327F76D7@swbell.net> <david.914316931@wraith> <367FF3E1.98B98229@swbell.net>

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

Follow-Ups:
- Re: Game port
  - From: Rubywand <rubywand@swbell.net>

References:
- Game port AN0 - AN3
  - From: Frank Carney <frankcNOSPAM@cyberhighway.net>
- Re: Game port AN0 - AN3
  - From: Frank Carney <frankcNOSPAM@cyberhighway.net>
- Re: Game port
  - From: Rubywand <rubywand@swbell.net>
- Re: Game port
  - From: Frank Carney <frankcNOSPAM@cyberhighway.net>
- Re: Game port
  - From: dempson@actrix.gen.nz (David Empson)
- Re: Game port
  - From: Rubywand <rubywand@swbell.net>
- Re: Game port
  - From: david@uow.edu.au (David Wilson)
- Re: Game port
  - From: Rubywand <rubywand@swbell.net>

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