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- ┌───────────────────────────────────────────────┐
- │ Programming the Gravis GamePad and Analog Pro │
- └───────────────────────────────────────────────┘
-
- Written for the PC-GPE by Mark Feldman
- e-mail address : u914097@student.canberra.edu.au
- myndale@cairo.anu.edu.au
-
- ┌───────────────────────────────────────────┐
- │ THIS FILE MAY NOT BE DISTRIBUTED │
- │ SEPARATE TO THE ENTIRE PC-GPE COLLECTION. │
- └───────────────────────────────────────────┘
-
-
- ┌────────────┬───────────────────────────────────────────────────────────────
- │ Disclaimer │
- └────────────┘
-
- I assume no responsibility whatsoever for any effect that this file, the
- information contained therein or the use thereof has on you, your sanity,
- computer, spouse, children, pets or anything else related to you or your
- existance. No warranty is provided nor implied with this information.
-
- ┌────────────────────────────────┬───────────────────────────────────────────
- │ Programming the Gravis GamePad │
- └────────────────────────────────┘
-
- The Gravis GamePad plugs into the standard joystick connector. It is
- a pad with a 9 direction controller (including center) and four buttons.
- Two of the buttons can be selected as "autofire" by a switch on the
- GamePad.
-
- _____ ||
- | \____||________
- | __ GRAVIS \
- | / \ GamePad B |
- | \__/ A C|
- |______________ D |
- \_____|
-
- The chief difference between the GamePad and a regular joystick is that
- the GamePad uses fixed resistances of about 0Ω, 50kΩ and 100kΩ. The
- resistances for each controller position are as follows:
-
- ┌──────────┬───────────┬───────────┐
- │ x = 0Ω │ x = 50Ω │ x = 100Ω │
- │ y = 0Ω │ y = 0Ω │ y = 0Ω │
- ├──────────┼───────────┼───────────┤
- │ x = 0Ω │ x = 50Ω │ x = 100Ω │
- │ y = 50kΩ │ y = 50Ω │ y = 50Ω │
- ├──────────┼───────────┼───────────┤
- │ x = 0Ω │ x = 50Ω │ x = 100Ω │
- │ y = 100Ω │ y = 100Ω │ y = 100Ω │
- └──────────┴───────────┴───────────┘
-
- The x axis is read via the regular Joystick A X Axis, the y axis is read
- via the Joystick A Y Axis.
-
- The GamePad buttons are accessed the same way that the normal joystick
- buttons are accessed:
-
- ┌────────────────────────────────────────────────────────┐
- │ GamePad Button A = Joystick A, Button 1 │
- │ GamePad Button B = Joystick A, Button 2 │
- │ GamePad Button C (autofire A) = Joystick B, Button 2 │
- │ GamePad Button D (autofire B) = Joystick B, Button 1 │
- └────────────────────────────────────────────────────────┘
-
-
- ┌───────────────────────────────────┬────────────────────────────────────────
- │ Programming the Gravis Analog Pro │
- └───────────────────────────────────┘
-
- The Analog Pro is very similar to a regular joystick, except it has 5
- buttons and a dial on the joystick, originally intended for use as a
- throttle for flight simulators.
-
-
-
- -- B & A
- ___
- C -> \ |
- ||
- D - || - E
- _▄_||_▄_
- |______|
-
- Left Side
-
-
-
- The Analog Pro joystick position is read the same as the regular Joystick A.
- The throttle value is read the same as for the regular Joystick B X Axis
- value.
-
- ┌─────────────────────────────────────────────┐
- │ Analog Pro Button A = Joystick A, Button 1 │
- │ Analog Pro Button B = Joystick A, Button 2 │
- │ Analog Pro Button C = Joystick B, Button 1 │
- │ Analog Pro Button D = Joystick B, Button 2 │
- └─────────────────────────────────────────────┘
-
- The SDK is a bit vague as to how button E is read. It mentions that the
- buttons D and E can be set as any of the joystick buttons, but I believe
- this is done via switches on the joystick itself (not sure, I don't actually
- own one).
-
- ┌────────────┬───────────────────────────────────────────────────────────────
- │ References │
- └────────────┘
-
- All the information in this file was obtained from the PC GamePad and Analog
- Pro SDK V1.1 which can be obtained via anonymous ftp:
-
- site: wasp.eng.ufl.edu
- directory: /pub/msdos/demos/programming/source
- filename: joysdk11.lzh
-