Before writing your actual program's code, you need a header to describe WLA the SNES' memorymap. This is basically just a file you will include into your source. It contains all of the basic information about your ROM. The following is a basic header file for a 2 Mbit ROM. Look at the comments beside each line for a brief explanation of that line. I will provide a better explanation after reveali ...
The header will be at 0x7xxx (for LoROM) or 0xFxxx (for HiROM) for the downloaded content. There may be more than one in a single Memory Pack.
xFB0-xFB1 = Licensee / Maker Code
xFB2-xFB5 = Program Type
xFB6-xFBF = Reserved
xFC0-xFCF = Title
xFD0-xFD3 = Block Allocation Flags
xFD4-xFD5 = Limited Starts
xFD6 = Date - Month
xFD7 = Date - Day
...
This guide should help you in your goal of patching your ROM. This guide is applicable to most ROMs and patches but makes some assumptions about the patches and ROMs used:
# Header 1 #
## Header 2 ##
### Header 3 ### (Hashes on right are optional)
#### Header 4 ####
##### Header 5 #####
## Markdown plus h2 with a custom ID ## {#id-goes-here}
[Link back to H2](#id-goes-here)
This is a paragraph, which is text surrounded by whitespace. Paragraphs can be on one
line (or many), and can drone on ...(Goes to $7E9A34)
$00-$01 : Unused.
$02 : Unknown (Copies to RAM $1411)
$03-$04 : 16-bit Big Endian Data Size (Copies to RAM $140F in Little Endian)
(Goes to $7E9BEC)
[Everything is checked for the Checksum]
$00-$01 : "SF" (0x4653) string.
$02 ...Offsets refer to the US version of the ROM.
Offset 0x33F82 contains a table of pointers to level and cutscene headers. Each entry in the table is 4 b ...
Version 1.0 - Copyright 2003: The Dumper
The Game Doctor SF3/SF6/SF7 backup units for the SNES use a 512 byte header.
The format is as follows (all numbers are hexadecimal):
0000-000F47 41 4D 45 20 44 4F 43 54 4F 52 20 53 46 20 33 "GAME DOCTOR SF 3"
This is the ID string for a Game Doctor SF header.
0010SRA ...
Also known as Hoshi no Kirby Super Deluxe and Kirby's Fun Pak. The information below is from the US version of the game, however it works for all versions of the game.
B ...
SPC is an audio format for playing native SNES audio.
| Offset | Size | Description | |
|---|---|---|---|
00000h |
33 | File header ... |
Due to the requests of several people, the lack of documentation in this area, and a hope to spring the SNES emulation "scene" forward, I am going to try to describe the BRR encoding scheme in this doc. Everything here, I either read in publicly available documentation, or discovered myself through trial and error. I cannot guarantee the accuracy of this doc, and I will not b ...