What controllers do you use with your 7800?

[Almost Rice]

I can post a modified instructions of the FAQ on how to make the 2 buttons work. The changes are for the differences in wire colors.

 

 

Yes please

 

This is based on the 7800 FAQ. I just added the Sega cable information. I did so since the sega cables are more readily available. I used 470 Ohm resistors instead of 620.

 

# Joystick Pinouts

2600/7800 pinouts:
_________________
\ o5 o4 o3 o2 o1/
 \ o9 o8 o7 o6 /
  \___________/
   Female

pin #  2600 control	 7800 control			 Sega Genesis extension cable	
1	  WHT- Up		  WHT- Up				  Brown	
2	  BLU- Down		BLU- Down				Red	  
3	  GRN- Left		GRN- Left				Orange   
4	  BRN- Right	   BRN- Right			   Yellow   
5	  unused		   RED- Button (R)ight (-)  Green	
6	  ORG- Button	  ORG- Both buttons (+)	Blue	 
7	  unused (+5v)	 unused (+5v)			 Grey	 
8	  BLK- Ground(-)   BLK- Ground(-)		   Black	
9	  unused		   YLW- Button (L)eft  (-)  White	


2600 control (button)

pin 6 ORG(+) --------------()------------BLK(-) pin 8
				   Button

7800 control (buttons)

									/----------YLW(-) pin 9
						 Button L  /
				   /---------()---| YLW splits
				  /				\----///-----\
pin 6 ORG(+) -------| ORG splits		   620 ohm  |---BLK(-) pin 8
				  \				/----///-----/
				   \---------()---|	 620 ohm
						Button R   \RED splits
									\----------RED(-) pin 5


 7800 control (buttons) with SEGA wires
 
										  /----------White(-) pin 9
							   Button L  /
						 /---------()---| Black splits
						/				\----///-----\
 pin 6 BLUE (+) -------| BLUE  splits		 620 ohm	 |---Black(-) pin 8
						\				/----///-----/
						 \---------()---|	 620 ohm
							  Button R   \Brown splits
										  \----------Green(-) pin 5

Edited June 23, 2008 by Almost Rice

[mimo]

thanks for the pin out.Any reason for using lower value resistors?

[Prodos8]

thanks for the pin out.Any reason for using lower value resistors?

Probably 'cause that's all he had. The circuit seems to be quite tolerant within reason.