SWC Header
Games that are backed up with Front Far East (FFE) line of backup units use a
generic header format. The header stores information about the rom
image
so the backup unit can emulate the original cart. It's also used to identify
which backup unit this image is used on.
Here are a list of copiers that use this as their native format:
| Copier |
Game Systems Supported |
Standard File Extensions |
| Super WildCard |
Super Famicon/Japan - Super Nintendo/USA |
*.SMC, *.SWC |
| Sega Magic Drive |
MegaDrive/Japan - Genesis/USA |
*.SMD |
| Magic Griffon |
PC Engine/Japan - Turbo Graphic 16/USA |
[Unknown] |
Header Format
The header is 512 bytes and resides at the start of the backup image.
This document does not include Super WildCard DX specfic bytes.
| 0 |
Low Byte of 8KB page counts |
| 1 |
High Byte of 8KB page counts |
| 2 |
Emulation Mode Select
Bit 7 6 5 4 3 2 1
X . . . . . . : 1=Run in Mode 0 (Jump $8000)
. X . . . . . : 0=Last File of the Game (Multi-File)
. . X . . . . : 0=Mode 1, 1=Mode 2 (SRAM Mapping)
. . . X . . . : 0=Mode 20, 1=Mode 21 (DRAM Mapping)
. . . . . X . : 0=Run in Mode 3, 1=Run in Mode 2 (JMP Reset)
. . . . . . X : 0=Disable, 1=Enable (external cartridge
memory image at Bank 205F,A0 System
Mode 2,3)
|
| 8 |
File ID = 0xAA - Used for identifying a Super WildCard header. (used with byte 9) |
| 9 |
File ID = 0xBB - Used for identifying a Super WildCard header. (used with byte 8) |
| 10 |
This byte describes what kind of image this copier is going to deal with.
| Value |
Image Type |
| 0x02 |
Magic Griffon Image |
| 0x03 |
Magic Griffon Save RAM |
| 0x04 |
Super WildCard Image |
| 0x05 |
Super WildCard Save RAM |
| 0x06 |
Sega Magic Drive Image |
| 0x07 |
Sega Magic Drive Save RAM |
|
| 11..511 |
Reserved = 0x00 |
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© 1996 Damaged Cybernetics All Rights Reserved
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