Sylvester & Tweety in Cagey Capers.

 No.  Code  Effect
  1  AJZA-CA68  Infinite lives
  2  DJ4T-CA8E  Invincible
  3  AEYT-CAA2  Start with 1 life
  4  ANYT-CAA2  Start with 3 lives
  5  AYYT-CAA2  Start with 5 lives
  6  B6YT-CAA2  Start with 15 lives
  7  CTYT-CAA2  Start with 20 lives
  8  AJZA-CA3N  Don't get an extra life at 100,000 points  
  9  PJZA-DJVN  Get 2 extra lives at 100,000 points
 10  PJZA-DNVN  Get 3 extra lives at 100,000 points
 11  AAZA-CAA8 + AAZA-CABG  Get an extra life at 34,464 points
 12  AJZA-CAA8 + AJZA-CABG  Get an extra life at 165,536 points
 13  ANZA-CAA8 + ANZA-CABG    Get an extra life at 231,072 points
 14  ATZA-CAA8 + ATZA-CABG  Get an extra life at 296,608 points
 15  RE4T-C6Y8  Fish bowls don't restore any health
 16  RE4T-C6ZG  Fish bowls restore full health
 17  BJ3A-CAE6 + BJ3A-CAFC  Sylvester can only take one hit
 18  GJ3A-CAE6 + GJ3A-CAFC  Sylvester can take less hits
 19  3A3A-CAE6 + 3A3A-CAFC  Sylvester can take more hits
 20  FT3A-CCE6 + FT3A-CCFC  Sylvester can take a lot more hits
 21  AECT-AAA8  Start on Level 2--Domestic Devils 2
 22  AJCT-AAA8  Start on Level 3--Mayhem Express
 23  ANCT-AAA8  Start on Level 4--Back Alley Blues
 24  ATCT-AAA8  Start on Level 5--Hyde and Shriek
 25  AYCT-AAA8  Start on Level 6--Hyde and Shriek 2
 26  A2CT-AAA8  Start on Level 7--Oceans of Trouble