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TWL_FIRM wifi chip params, partially pulled from GBATek
| 0x40
| 0x40
| This is used by [[APT:LoadSysMenuArg]] and [[APT:StoreSysMenuArg]].
| This is used by [[APT:LoadSysMenuArg]] and [[APT:StoreSysMenuArg]].
|-
| 0xD50
| 0x20
| Atheros WiFi configuration struct
|-
|-
| 0xD70
| 0xD70
| 0x3
| 0x3
| Setting bit0 here enables overriding the FIRM_* fields in [[Configuration_Memory]].
| Setting bit0 here enables overriding the FIRM_* fields in [[Configuration_Memory]].
|}
Atheros WiFi configuration struct for booting TWL_FIRM, from offset 0xD50. This struct is copied directly to 0x20005E0 in DSi memory. Since DSi cartridge ROMs include SDIO drivers for the wireless card and can't be updated, this structure allows interoperability between the original DSi wireless cards (AR6002/DWM-W015 and AR6013/DWM-W024) as well as the 3DS's AR6014/DWM-W028.
{| class="wikitable" border="1"
|-
! OFFSET
! SIZE
! DESCRIPTION
|-
| 0x0
| 0x1
| WiFi Board Type (1=DWM-W015, 2=DWM-W024, 3=DWM-W028; 0x03 on 3DS)
|-
| 0x1
| 0x1
| Unknown (0x00)
|-
| 0x2
| 0x2
| CRC16 from 0x4 to 0x20 (0x1C bytes)
|-
| 0x4
| 0x4
| Atheros RAM Vars/Host Interest address (0x520000 on 3DS)
|-
| 0x8
| 0x4
| Atheros RAM base (0x520000 on 3DS)
|-
| 0xC
| 0x4
| Atheros RAM size (0x20000 on 3DS)
|-
| 0x10
| 0x10
| Unknown (Zeroed)
|}
|}