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SubjectRe: [PATCH] db9.c (Re: [PATCH] gamecon (added support for Sega Saturn controller), kernel 2.4.20)
Hello,
Thank you very much for your reply and acceptance of my patch.

Vojtech Pavlik <vojtech@suse.cz> wrote:
> Thanks for the patch! I applied it to my kernel tree. How about a
> patch to update for the joystick-parport.txt documentation file?
I updated jostick-parport.txt file. New saturn figure is equivalent
to previous documentation. It might require a review, especially in
language.

Thank you for your reading,
yokota


--- joystick-parport.txt.orig Thu Sep 13 07:34:06 2001
+++ joystick-parport.txt Mon Jun 23 21:53:14 2003
@@ -393,35 +393,66 @@

2.4.3 Sega Saturn
~~~~~~~~~~~~~~~~~
- Sega Saturn has eight buttons, and to transfer that, without hacks like
+ Sega Saturn has nine buttons, and to transfer that, without hacks like
Genesis 6 pads use, it needs one more select pin. Anyway, it is still
handled by the db9.c driver. Its pinout is very different from anything
else. Use this schematic:

- +-----------> Select 1
- | +---------> Power
- | | +-------> Up
- | | | +-----> Down
- | | | | +---> Ground
- | | | | |
- _____________
-5 \ o o o o o / 1
- \ o o o o /
- 9 `~~~~~~~' 6
- | | | |
- | | | +----> Select 2
- | | +------> Right
- | +--------> Left
- +----------> Power
+ +-------------------> Ground (parallel port pin 18 - 25)
+ | +-----------------> Data 2 (pin 3)
+ | | +---------------> Data 3 (pin 2)
+ | | | +-------------> Power sub (pin 1)
+ | | | | +-----------> Select 1 (pin 14)
+ | | | | | +---------> Select 0 (pin 16)
+ | | | | | | +-------> Data 0 (pin 5)
+ | | | | | | | +-----> Data 1 (pin 4)
+ | | | | | | | | +---> Power (pin 1)
+ | | | | | | | | |
+ /= = = = = = = = =\
+| 1 2 3 4 5 6 7 8 9 |
++-------------------+

- Select 1 is pin 14 on the parallel port, Select 2 is pin 16 on the
+ Select 1 is pin 14 on the parallel port, Select 0 is pin 16 on the
parallel port.

(pin 14) -----> Select 1
-(pin 16) -----> Select 2
+(pin 16) -----> Select 0

- The other pins (Up, Down, Right, Left, Power, Ground) are the same as for
-Multi joysticks using db9.c
+ Data 2, 3, 0, 1 are connected to pins 3, 2, 5, 4 on the parallel port.
+
+(pin 3) -----> Data 2
+(pin 2) -----> Data 3
+(pin 5) -----> Data 0
+(pin 4) -----> Data 1
+
+ The other pins (Power, Ground) are the same as for Multi joysticks using
+db9.c
+
+ Power sub might require a resistor, when you use analog controller with
+external +5 volt power supply.
+
++5V supply ------+------------> Power (saturn 9)
+ | Resistor
+ +--[10kOhm]--> Power sub (saturn 4)
+
+ On a side note, if you have already built a different adapter for use with
+DirectPadPro, this is also supported by the db9.c driver, as device type 11
+and 12. Use 11 for a connector, or 12 for two connectors. Two connectors are
+distinguished with its own Ground pins.
+
+ +-------------------> Ground (pin 8 or pin 9)
+ | +-----------------> Data 2 (pin 12)
+ | | +---------------> Data 3 (pin 13)
+ | | | +-------------> Power sub (pin 4)
+ | | | | +-----------> Select 1 (pin 3)
+ | | | | | +---------> Select 0 (pin 2)
+ | | | | | | +-------> Data 0 (pin 11)
+ | | | | | | | +-----> Data 1 (pin 10)
+ | | | | | | | | +---> Power (pin 5)
+ | | | | | | | | |
+ /= = = = = = = = =\
+| 1 2 3 4 5 6 7 8 9 |
++-------------------+

3. The drivers
~~~~~~~~~~~~~~
@@ -483,10 +514,12 @@
3 | Genesis pad (3+1 buttons)
5 | Genesis pad (5+1 buttons)
6 | Genesis pad (6+2 buttons)
- 7 | Saturn pad (8 buttons)
+ 7 | Saturn pad (9 buttons)
8 | Multisystem 1-button joystick (v0.8.0.2 pin-out)
9 | Two Multisystem 1-button joysticks (v0.8.0.2 pin-out)
10 | Amiga CD32 pad
+ 11 | Saturn pad (DirectPadPro pin-out)
+ 12 | Two Saturn pads (DirectPadPro pin-out)

Should you want to use more than one of these joysticks/pads at once, you
can use db9_2 and db9_3 as additional command line parameters for two

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