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INTRODUCTION
TM
The Grappler Interface is a Centronics compatible parallel
interface for the Apple II/II+ Computer. In addition to advanced
text features, it offers high resolution dot graphics (HIRES) dump
routines located in firmware. These are easily invoked using
simple control commands.
There is no standardization among printer manufacturers for
dot graphics. Therefore a specific version of the Grappler
interface was developed for each type of printer. If you connect
a printer to an incorrect version of the Grappler, the text
features should still function properly. However, the graphics
commands will have unpredictable results.
INSTALLATION INSTRUCTIONS
To install the Grappler simply plug it into any slot inside
the Apple (except
Ø), as follows:
1. Turn of
f the power to the Apple . This is important to prevent
damage to the computer and the Grappler.
2. Connect the Grappler cable to the set of pins on the Grappler
interface card. Make sure that all the pins on the card go
into the cable~s matching holes. Also, the cable should
point away from the card (it will only fit one way).
3. Remove the cover from the Apple. This is done by pulling up
on the cover at the rear edge (the edge farthest from the
keyboard) just until the two corner fasteners pop apart.
Don't lift the edge any further, but instead slide the cover
backward until it comes free.
4. Inside the Apple along the rear edge of the circuit board,
there is a series of eight long, narrow sockets called “slots”.
The leftmost slot (looking at the computer from the keyboard
end) is slot #9~. The adjacent slot is slot #1 and this is
where most Apple programs expect the Grappler to be.
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