Standard cheat codes:

All codes are entered on controller one during the one second black 
screen that appears between pressing P at the Visitors stats screen 
and the tip off. These codes can be done in conjunction with one 
another. For instance, to have small players, shot percentage, and 
super slams, hold LS + A + C while tapping RS. (LS = shot %, A + 
C = slams, Tap RS = small players) If the code requires LS (e.g. 
small players with big heads) hold LS momentarily at the end of 
code entry, while the screen is still black. It takes a lot of 
timing, but it can be done. 

Shot Percentage 
Hold LS. Once the game starts, press P to pause the game, and P to 
resume. When a shot is made, the shooter's chances of making the shot 
from that particular location will be displayed above the basket. 
This code will only be active for the first half. 

Small Players
Hold RS until the tip off. Once the game starts, press P to pause 
the game, and P to resume. 

Small Players With Big Heads
Hold RS while tapping LS until the tip off. Once the game starts, 
press P to pause the game, and P to resume. 

Small Players With Shot Percentage
Repeatedly tap LS, RS in quick succession until the tip off, but 
end the sequence with LS. Once the game starts, press P to pause 
the game, and P to resume. 

Players With Big Heads
Repeatedly tap LS and C in quick succession until the tip off. Once 
the game starts, press P to pause the game, and P to resume. 

Remove Small/Large Player Modes
Start the next game. Once the game starts, press P to pause the 
game, and P to resume. 

Super Dunks
Hold A + C through the tip off. When the ball is thrown up into 
the air, press P to pause the game, and P to resume. Release A + C. 
Players will be able to dunk from the three point line. 

Super Speed 
Hold A + B + C through the tip off. When the ball is thrown up into 
the air, press P to pause the game, and P to resume. Release A + B 
+ C.
The game should be moving at a faster pace. 

Special teams:

Press and hold LS + RS at the screen that contains the Slam 'n' 
Jam 95 title and 3DO logo in the lower right corner. Release both 
buttons just after the screen turns black. Keeping them pressed 
will reset the 3DO. Press P to abort the demonstration game. 

Enter Left, Right, Up, Down, C, B, A, Right at the main menu to 
enable the Left Field Lefties team. This team is composed of the 
developers of the game, the original Left Field staff, who were 
all left handed. 

Immediately after entering the Left Field code, enter Left, 
Right, Up, Down, C, B, A, Left. This enables the Monsters team. 

Both the Left Field Lefties and the Monsters teams are only 
available in Exhibition mode. The activated code is flagged in 
the saved game file, making both teams selectable in future 
games without re-entry of the code. 

Hint: Unlimited fouls:

If you commit a foul, press P button before the computer can 
attribute that foul to your player. Substitute your player for a 
one that you wish to receive the foul and press P. The substitute 
player will now be attributed with the foul that you committed. 

Hint: President Clinton:

Number 34 on Atlanta may not actually be Don Maclean of 
Washington. He looks suspiciously like President Clinton.