Caple C871i Manual de usuario descargar pdf (Pagina 439)

Apple II Computer Info

HOW TO DO A "SHIFT KEY 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.

APPLE II SHIFTKEY MODIFICATION

------------------------------

The one wire shiftkey mod is the oldest and simplest fix that

can be made to the Apple II to get true upper and lower case

operations with the shift key. Most good word processors have

input routines that check the PB2 input on the game I/O port to

determine if the shift key is being pressed. Some programs that

have these routines are Wordstar, Write-on, Apple Pascal 1.1 and

many others. Follow the steps below to install the shift key mod.

parts:

1 mini-grabbette clip (Radio Shack PN 270-370)

1 15 in. piece of small guage wire

1 16 pin socket

1) Solder one end of the wire to the mini-grabbette clip.

2) Solder the other end of the wire to pin 4 of the 16 pin socket

as close to the body of the socket as possible.

3) Turn the Apple II off and remove the cover.

4) Remove anything plugged into the game I/O socket.

5) Attach the mini-grabbette clip to pin 24 of the keyboard encoder

connector. This connector is located inside the Apple II directly

beneath the RESET key. Pin 1 is nearest the power supply and pin

25 is nearest the right edge of the Apple II. Use the grabbette

clip to attach to the standoff _pin 24_ (second from the end).

6) Lead the other end of the wire with socket attached along the

right edge of the motherboard and plug it into the game I/O port.

Be careful to plug pin 1 to pin 1 when putting this socket in.

Pin 1 of the game I/O port is towards the front of the computer.

7) Replace the cover and start using lower case characters.

eof

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Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 439 of 572

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Caple C871i Manual de usuario Pagina 439

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