Re: Keyboard conversion project? IIGS portable ideas

[david@uow.edu.au (David Wilson)]

et472@FreeNet.Carleton.CA (Michael Black) writes:
>If the IIC used the same keyboard encoder as the IIe (or some
>better integrated clone of it) then likely the matrix would have
>to be the same.  But of course, the layout is fairly arbitrary,
>and if Apple went to their own decoder, rather than an off the
>shelf IC that was used in the original II, then they could set
>things for easiest layout or whatever.  

The //e and //c do use the same encoder but both post process the keycodes
with a ROM connected to the output of the encoder. Thus the layouts can be
completely different. As long as you have the shift/caps/apple keys individually
accessable and the main keys fit into an 8x10 (I think that is the matrix size)
array you can fix any key mapping anomalies by programming a 2716 EPROM.
--
David Wilson  School of IT & CS, Uni of Wollongong, Australia