Shift-Key-Mod (was Re: Really Should be a FAQ!)

[tombaker@world.std.com (Tom A Baker)]

In article <1q8kf5INNijp@srvr1.engin.umich.edu> ftit@engin.umich.edu (Sergej Roytman) writes:
>FAQ: how does one make a shift-key mod?  The reason I want to do this
>to my machine after so many years of 40-COLUMN UPPER-CASE, is that I
>got it used, and want to do some serious stuff on it.  I've got the
>uppercase-lowercase character ROM, so the only question is what traces
>to cut and where to run the wire.
>Thanks in advance for dredging up your old memories!

I post this, in place of email, 'cuz someone may have the exact answer.

The "Shift Key Mod" was a wire (*not* cut traces) from the keyboard interface
to the game socket.  The wire should carry the "SHIFT" signal from its
keyboard interface pin to "pushbutton 2" (I think).

1. Do you have documentation on the II+?  It should include the game socket
   pinout.  It may include the keyboard interface pinout.

   Not given that, do you have an ohm-meter.  Check the keyboard interface for
   the shift signal, pin by pin.  I seem to remember that it was the 
   third or fifth pin from the right, but I also seem to remember that
   there was more than one type of keyboard interface.

   And I _think_ it was pushbutton2.  Might have been 1 or 0.

   You can experiment with the pushbuttons by peek()-ing at them.  Try them
   with the target software.

2. Anyone know the _exact_ pins?  I haven't seen my ][+ for ... gee, when?

tombaker