Contra
Compiled By: TheAlmightyGuru (www.thealmightyguru.com)
Updated: 2007/01/16


ROM Offsets

Graphics    : This data can be viewed using a tile viewer.
Text        : Use the game's text lookup table to read/edit this.
Empty       : Basically a bunch of null values.
Patterned   : Patterned data (meaning it has a pattern when viewed through a tile viewer) Could be a data table, map data, encoded graphics, or something along those lines.
Unpatterned : Unpatterned data (looks like static noise in a tile viewer) is usually program data. 

00000-0000F - NES Header
00010-03D7F - Unpatterened
03D80-0400F - Empty
04010-07DFF - Patterened/Unpatterened
07E00-0800F - Empty
08010-09187 - Patterened/Unpatterened
0918D-0923F - Text (Title Screen)
09240-0925F - Patterened/Unpatterened
09260-0B00F - Graphics
0B010-0BD4F - Patterened/Unpatterened
0BD50-0C00F - Empty
0C010-1000F - Patterened
10010-138CF - Graphics
138D0-13C3A - Patterened
13C3B-13DDF - Text (Credits)
13DE0-1400F - Empty
14010-16DEF - Graphics
16DF0-1764F - Patternded
17650-1800F - Empty
18010-1B26F - Graphics
1B270-1B2A5 - Patterened/Unpatterened
1B2A6-1B3C3 - Text (In between levels / Stage names)
1B3C4-1BD3F - Patterened/Unpatterened
1BD40-1C00F - Empty
1C010-1F62F - Patterened/Unpatterened
1F630-1FC0F - Empty
1FC10-2000F - Patterened


Run-Time Memory Offsets

0032 - P1 Lives
0033 - P2 Lives
00AA - P1 Weapon (0 - Regular, 1 - Machine Gun, 2 - Flame Thrower, 3 - Spray, 4 - Laser) +10 for Rapid fire
00AB - P2 Weapon (0 - Regular, 1 - Machine Gun, 2 - Flame Thrower, 3 - Spray, 4 - Laser) +10 for Rapid fire
0368-0371 - P1 Bullet Flags
03B8-03C1 - P1 Bullet Y
03C8-03D1 - P1 Bullet X
0584 - First Boss Gun 2 Life
0586 - First Boss Target Life
0587 - First Boss Gun 1 Life