Re: ][+ Shift Key Mod?

[Steve Jensen <sjensen@primenetyourknife.com>]

Tom Zuchowski <tzuchow@ibm.net> writes:
: Edhel Iaur, Esq. <LOSETHECAPITALWORDSedhel@bigfoot.com> wrote in article
: <33e3fbe4.5781716@news.tds.net>...
: > Does the ][+ shift key mod only make the shift keys act (in addition
: > to their old tasks) as the joystick button associated with PDL(2)?

: That is correct.

: > Does it take specially-made programs to recognise the shift key mod?

: Yes. Alternatively, the firmware that is running while in 80-column mode
: with many if not most II+ 80-column cards will handle the shift-key mod
: transparently to the program that is running.

: > Is the single wire running from the keyboard plug (or those other
: > places where the shift key's signal can be grabbed from) to the game
: > port the only part of the shift key mod, or is it more complicated
: > than that?

: That's all there is to it. Typically the signal is taken off the comb pins
: between the two keyboard boards.

: TomZ

Here's a file I have on the shiftkey mod:

To install the "shift key mod" on a II+ what you need to do is connect
a wire from the shift key pin on the keyboard aux. circuit board (this
hangs below the keyboard) to annunciator 3 on the joystick port. The shift
key pin is the second pin from the right on the "piggy-back" circuit
board under the keyboard. You will probably need to solder it on. Pin 4 on
the joystick connector is where you stick the other end. You can just push
the wire in and then probably replace the joystick (if there is one) right
on top of it.
        In case that was unclear, 2nd from the right means as you look
under the keyboard from the front, and pin 4 is the fourth pin down on the
left with the notch at the top (on the joystick connector). Now, when the
shift key is pressed, it sets (or clears?) AN3. Some programs look for
this. However, DOS and Applesoft don't, as far as I know.

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