18.011 What are the DIP switches on my Grappler+ for?
Description
This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
18.011 What are the DIP switches on my Grappler+ for?
The DIP switches are used to configure your card for a series of different
printers out there. I'll list those settings:
DIP switch settings:
DIP SWITCH POSITIONS 1 2 3 4
Epson Series and Star Gemini OFF ON ON ON
NEC 8023/C, Itoh 8510/DMP 85 OFF ON ON OFF
Centronics 739-1 OFF ON OFF ON
Anadex Printers OFF ON OFF OFF
Okidata 82A, 83A, 92, 93, 84 OFF OFF ON ON
Okidata 84 w/o Step II Graphics OFF OFF OFF ON
Apple Dot Matrix OFF OFF ON OFF
IDS Printers (Any position)
Notes: DIP switch ON = "+" side or set to right.
Switch 1 controls MSB, the 8th bit. Setting switch 1 to 'ON'
makes MSB not transmitted...
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By: Joe Kohn
The Harmonie printer drivers are available from Shareware Solutions II. As the
publisher, the most frequently asked question I get is "Which Grappler+ dip
switch setting should I use for an HP DeskJet?"
According to those who use a Grappler+ to connect a DeskJet, the dip switch
settings are:
1-ON (up)
2-OFF (down)
3-OFF (down)
4-ON (up)
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By: Beverly Cadieux
Joe, I've checked hundreds of Apple II Mail Group messages, and every time
Grappler+ dip switches are mentioned in connection with DeskJets, people say
they use OFF ON ON ON-- i.e. - + + +
Since you are calling ON "up," we are probably using about the same setting. We
call ON "down," (pushed in, toward the +). So your ON is probably our OFF.
When switch 1 is ON the MSB is not transmitted to the printer. When the Switch
1 is OFF, MSB is under software control. AppleWorks requires that switch 1 be
OFF to allow high ascii characters (enabled with a Control-I H in the interface
code) to print. If it were ON, they would be prohibited.
Switch one doesn't matter unless you want to send a high bit through. If you
don't care about printing high ASCII (language characters, legal and math
symbols, box edges), then it can be set either way.
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