Posted by Just Michael on 13, 2001 at 11:47 PM:
In Reply to: keyboard hack questions posted by dan on 13, 2001 at 10:44 PM:
If you want that many inputs the best advice I can offer is to ditch the keyboard hack idea and buy a keyboard encoder that has as many inputs as you need.
:
: I now read all I can find on keyboard ghosting and how to prevent it, but still have a number of questions:
: 1) various sites mention that a keyboard IC usually has 8 'y' and 13 'x', or 12 and 12, etc. How can I determine how many mine has - mine has a big chip on the top with various electronically diodes (I think), and then tons of green lines on the back side with pins on the ends of each green line.
: 2) I plan on geting diodes to prevent ghosting; will this also allow multiple keys to be pressed and the IC recognizing them? I plan on a 4 player with 6 buttons each, plus 6 MAME keys, for a total of 46 keys.
: thanks