Joker FAQ

Gameshark Hacking & GT2 Hybrid Cars

"Joker Commands"

A "Joker" is the games address location for controller input. All games have them, usually a few. There is a "master" joker thats supposed to work with all games, it starts with "D4" you can read about it in the "Datel Code Types" doc. I have heard it can be glitchy and doesen't work for older carts. You will find that there are many times when you don't want a code to be active all the time, many can't be or you get crashes, lockups. To work around this you will need an"activator"code. An activator "D0" or "E0" code type is an "equal to" code. It tells the shark" if memory location holds value xxxx then activate next code,if not do nothing." A joker is cool because you can activate your codes with the press of a button. There are 4 types of jokers. Normal, Reverse, Max normal and Max reverse. I made a chart that has all the jokers and the button values both in hex and dec, it's at the bottom of this page. To hack a joker i use the "known Value" search option. All you do is start with the "Normal" joker button values. First do a search with no buttons pressed for values 00000 remember this is decimal value, go back to game then press O button and do a search for val 00032, go back to game and hold left directional button now do a search for val 32768. I like to use the left direction button because when you activate to test it's easy to tell if it's working, the person or object will keep going left. If you still have alot of possible's repeat the procedure above. If you get O possible then do reset code generator and search for "Reverse" joker values the same way. NOTE: for the "Max" joker types when you search with no buttons pressed the val is 65535. See chart below for all button values. Once you have found the address for the joker and are ready to enter it as an activator you just replace the "80" part of the address with "D0" and use the button value that you want to activate it, then list the code you want it to activate underneath it. You will have to use a "D0" for each code you want activated. As in

you can't use

D0xxxxxx 0001

80123456 xxxx

80123457 xxxx you would have to use

D0xxxxxx 0001

80123456 xxxx

D0xxxxxx 0001

80123457 xxxx

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Remember "no buttons" pressed for "Max jokers" is 65535 decimal.
	NORMAL		REVERSE		MAX NORMAL		MAX REVERSE
BUTTON	HEX	DEC	HEX	DEC	HEX	DEC	HEX	DEC
L2	OOO1	1	O1OO	256	FFFE	65534	FEFF	65279
R2	OOO2	2	O2OO	512	FFFD	65533	FDFF	65023
L1	OOO4	4	O4OO	1024	FFFB	65531	FBFF	64511
R1	OOO8	8	O8OO	2048	FFF7	65527	F7FF	63487
Triangle	OO10	16	1OOO	4096	FFEF	65519	EFFF	61439
O	OO20	32	2OOO	8192	FFDF	65503	FFDF	57343
X	OO40	64	4OOO	16384	FFBF	65471	BFFF	49151
Square	OO80	128	8OOO	32768	FF7F	65407	7FFF	32767
Select	O1OO	16	OOO1	1	FEFF	65279	FFFE	65534
Start	O8OO	2048	OOO8	8	F7FF	63487	FFF7	65527
Up	1OOO	4096	OO1O	16	EFFF	61439	FFEF	65519
Right	2OOO	8192	OO2O	32	DFFF	57343	FFDF	65503
Down	4OOO	16384	OO4O	64	BFFF	49151	FFBF	65471
Left	8OOO	32768	OO8O	128	7FFF	32767	FF7F	65407
L3	O2OO	512	OOO2	2	FDFF	65023	FFDF	65533
R3	O400	1024	OOO4	4	FBFF	64511	FFFB	65531

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