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1,029 bytes added ,  06:44, 2 June 2015
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=GBA VC=
 
=GBA VC=
GBA VC is run by [[FIRM|AGB_FIRM]]. RomFS isn't used for GBA VC titles, but can be found empty within GBA VC titles. The NCCH [[ExeFS]] contains the same files as a normal application. The [[ExeFS]]:/.code contains the GBA VC ROM followed by a 0x360 footer.
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GBA VC is run by [[FIRM|AGB_FIRM]]. RomFS isn't used for GBA VC titles, but can be found empty within GBA VC titles. The NCCH [[ExeFS]] contains the same files as a normal application. The [[ExeFS]]:/.code contains the GBA VC ROM followed by a 0x360 byte long footer.
    
===Footer===
 
===Footer===
All values in the GBA VC Footer are Little Endian.
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All values in the GBA VC footer are little-endian.
 
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
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|-
 
|-
 
| 0x008
 
| 0x008
| 0x2
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| 0x4
| Unknown
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| Save type (see below)
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|-
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| 0x020
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| 0x1
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| Manufacturer info select (see below)
 
|-
 
|-
| 0x02A
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| 0x024
| 0x2FA
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| 0x300
| Unknown
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| Unknown, three different types of this data have been observed.
 
|-
 
|-
 
| 0x338
 
| 0x338
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| 0x35A
 
| 0x35A
 
| 0x2
 
| 0x2
| GBA ROM Filesize per MB
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| High two bytes of GBA ROM file size
 
|}
 
|}
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Save types:
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* EEPROM (various sizes, IDs specified in footer): 0x2
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* SRAM/FRAM (128k): 0xE
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* Flash (512k): 0x9
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Support for RTC and 1m-flash chips is not implemented in AGB_FIRM.
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Manufacturer info:
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GBA games' SDK-provided save code only supports a range of manufacturers from which Nintendo was buying memory from around the time of that game's development. As such, most games don't support a generic emulated storage chip. This byte appears to select a manufacturer info set to emulate. This has been observed to be 0x90, 0xC0, and (in one EEPROM-based game), 0x80.
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* SRAM games up to and including V111 use 0xC0. Above use 0x90.
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* FRAM V103 uses 0xC0. V104+ don't exist, and lower versions also likely use 0xC0.
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* Flash V124 was observed 0x90, V131 was observed 0xC0.
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* EEPROM-based games vary wildly, since they can likely specify chip info in the 0x10-region of the footer.
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