Re: Keyboard

[Rubywand <rubywand@swbell.net>]

Wayne Stewart writes ...
> 
>>

The II plus keyboard is a bit different in that the keyboard encoder is on or
attached to the keyboard where the IIe encoder is on the MLB. With the IIe all
you have is a collection of switches and 2 resistors with a 26 lead ribbon
cable going to the MLB with only 22 of those leads being used. The simplest way
to do this seems to be to simply cut all the traces on a IIgs keyboard and just
rewire it as a IIe keyboard. Then just run a 22 or 26 lead cable back to the
keyboard connector on the MLB. Maybe a few extra wires to connect to the mouse
card and add a DB 9 connector to the side of the keyboard. Once it's wired
repair would be easy enough but to put it together I'll need to solder around
225 connections which feels a bit daunting so I'd better get started today
before I feel too overwhelmed.

<<

     That approach might work. One problem, aside from a bulky kb cable, could
be noise pickup and false keying on those long KB matrix lines.

     A simpler, more reliable method is to include a decoder inside the
keyboard and run just the eight ASCII code lines, Reset, Open/Closed Apple key
lines, and power to the motherboard. 



Rubywand