here is an interesting dos utility suitable for embedded dos controllers.
dosjoy2k.com is a parallel port interface driver that takes input from the lpt
and coverts them to keystrokes. unfortunately the source code is not available.
i'll try to talk to the author if he can donate it to freedos.
for the inputs, one has to build a DIY switchboard/gamepad/controller using the
lpt pinouts in a matrix (5*12=60 switches). this is easier than a keyboard hack
and is not dependent on commercial pc hardware (which are no longer supported
in dos).
at the moment, it is used as a game controller but its role can be expanded
(robotics, automation) if it can output key scancodes (or combinations of)
rather than plain keystrokes. it could even trigger something in the pci
registers, i don't know, i'm not a programmer. being a tsr makes it usable for
existing dos apps. i hope the next version will use an editable textfile, i
think it's more manageable that way.
from what i understand, it has a bug where the pc cannot "soft off" when
dosjoy2k is loaded but it has not happened to my pc. also, lpt out is not
utilized. maybe for a few less inputs, the lpt out can be used for lcd display
or drive a relay. finally, i did not see anywhere in the discussion thread
about lpt2, lpt3 so i'm assuming it is hardcoded to lpt1. i hope the author
will keep on updating this software.
(forum is in spanish)
www.marcianitos.org/foro/showthread.php?t=3776
dosjoy2k unofficial package, if forum requires login
www.megaupload.com/kr/?d=W2724NDL
parallel port interface links:
www.trimoor.com/lpt_switch/index.htm
www.burg-halle.de/~schwenke/parport.html
www.doc.ic.ac.uk/~ih/doc/par/
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