Contra (NES)/ROM map

The following article is a ROM map for Contra (NES).

Header

• 00000-0000F = iNES ROM Header Data

Bank 0

• 00010-03D7A = Enemy Logic
• 03D7B-0400F = Unused

Bank 1

• 04010-048F7 = Sound Engine Code
• 048F8-06EAC = Encoded Sound Data
• 06EAD-0703F = Code to Draw Sprites
• 07040-07DF4 = Encoded Sprite Data
• 07DF5-0800F = Unused

Bank 2

• 08010-090A7 = Level Supertile Screen Assignments
• 090A8-0B001 = Compressed Graphic Data
• 0B002-0B328 = Player State Logic
• 0B329-0B428 = Level Header Data
• 0B429-0BD4B = Enemy Generation Logic
• 0BD4C-0C00F = Unused

Bank 3

• 0C010-0FE09 = Supertile and Palette Data
• 0FE0A-0FFBE = End Level Routine Logic
• 0FFBF-1000F = Unused

Bank 4

• 10010-138C8 = Compressed Graphic Data
• 138C9-13BA4 = Game End Routine Logic
• 13BA5-13DD0 = Ending Credits Data
• 13DD1-1400F = Unused

Bank 5

• 14010-1736D = Compressed Graphic Data
• 1736E-17643 = Automated Demo Input
• 17644-1800F = Unused

Bank 6

• 18010-1B271 = Compressed Graphic Data
• 1B272-1B3D6 = Text Data
• 1B3D7-1BD35 = Weapon Logic
• 1BD36-1C00F = Unused

Bank 7

• 1C010-1F621 = Game Engine Logic
• 1F622-1FC0F = Unused
• 1FC10-1FFDF = Differential Pulse Code Modulation (DPCM) Data
• 1FFE0-2000F = NES Undocumented Footer

Rom Usage Overview

Table

Rom Usage

Type	Percentage	Bytes
Compressed Graphic Data	49.179%	64,461
Code	29.726%	38,962
Compressed Audio	8.109%	10,629
Unused	5.585%	7,320
Configuration Data	4.027%	5,278
Sprite Data	2.677%	3,509
Text Data	.697%	913

Visual Map

CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCUUUUU
CCCCCCCCCCCCCCCCCCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAACCCSSSSSSSSSSSSSSSSSSSSSSSSSSSUUUUD
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGCCCCCCDDCCCCCCCCCCCCCCCCCCUUUUUUG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGCCCUG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGCCCCCCTTTTUUUUGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGDDDDDDUUUUUUUUUUUUUUUUUUUUG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGTTTCCCCCCCCCCCCCCCCCCCUUUUUU
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCUUUUUUUUUUUUAAAAAAAA

Legend

• G = Compressed Graphic Data
• C = Code
• A = Compressed Audio
• U = Unused
• D = Configuration Data
• S = Sprite Data
• T = Text Data