Nintendo Switch Brew

Gamecard: Difference between revisions

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Renumber cart pins to make end-end trace easier, at expense of dat lines becoming swizzled
 
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For the Gamecard partitions that can be [[Filesystem_services|mounted]], see [[Gamecard_Partition|here]].
For the Gamecard image format, see [[XCI|here]].


For the Gamecard image format, see [[Gamecard_Format|here]].
For the Gamecard ASIC, see [[Lotus3|here]].


For the Gamecard ASIC, see [[Gamecard_ASIC|here]].
= Pinout =
Note: Pins 1 and 2 act as one when receiving data from the ASIC chip.


= Pinout =
[[File:Gamecard-pinout.png|400px]]
[[File:Gamecard-pinout.png|400px]]


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! Description
! Description
|-
|-
| 1, 2
| 1
| GND
| Input
| Ground
|-
| 2
| CD#
| CD#
| Output
| Output
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|-
|-
| 8
| 8
| VCC 3.3v
| VCC 3.1v
| Input
| Input
|
| Power (3.1V) for Internal Core
|-
|-
| 9
| 9
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| VCC 1.8v
| VCC 1.8v
| Input
| Input
|
| Power (1.8V) for I/O
|-
|-
| 12
| 12
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| 16
| 16
| GND
| GND
|
| Input
|
| Ground
|-
|-
| 17
| 17
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All IO use 1.8V for logic HIGH and 0V for logic LOW.
All IO use 1.8V for logic HIGH and 0V for logic LOW.
Data pins are approximately 0.75mm in width and are in order of length: 9mm (pin 16), 8mm (pins 17, 5), 6mm (pins 1&2) 3mm (pins 3, 4, 6, 7, 9, 10, 12, 13, 14, 15).


= Slot Pinout =
= Slot Pinout =
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|-
|-
| 8
| 8
| VCC 3.3v
| VCC 3.1v
|-
|-
| 9
| 9
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The actual response bytes are also followed immediately by a 4-byte CRC-32 over the actual data response bytes.
The actual response bytes are also followed immediately by a 4-byte CRC-32 over the actual data response bytes.
A typical boot up sequence of a game cartridge (in this case, the game "1,2 Switch") looks like this:
{| class="wikitable"
! Command
! Size
! Description
|-
| <code>5B000000000000010000000000000000</code>
| 0x200
| Read sector 0, contains "HEAD" blob
|-
| <code>5B000000000000010000000000000000</code>
| 0x200
| Read sector 0, contains "HEAD" blob
|-
| <code>56000000000000000000000000000000</code>
| 0x4
| Read card id "AE F8 01 21"
|-
| <code>28000000000000000000000000000000</code>
| 0x4
| Read ??? "02 00 00 00"
|-
| <code>A5000000000000000000000000000000</code>
| 0x4
| Read ??? "00 00 00 00"
|-
| <code>56000000000000000000000000000000</code>
| 0x4
| Read card id "AE F8 01 21"
|-
| <code>28000000000000000000000000000000</code>
| 0x4
| Read ??? "02 00 00 00"
|-
| <code>5B000000380000010000000000000000</code>
| 0x200
| Read sector 0x38, contains "CERT" blob
|-
| <code>E2000000000000000000000000000000</code>
| 0x4
| Read ??? "01 00 00 00"
|-
| <code>E0000000000000000000000000000000</code>
| 0x200
| Read crypto-challenge header
|-
| <code>200838A25A344F818ABB6456694D4E8D</code>
| 0
| Enter crypto mode1 with HOST-RANDOM "0838A25A344F818ABB6456694D4E8D"
|-
| <code>7EE41FDF12C01C157CC899910673A0CF</code>
| 0x40
| Encrypted crypto mode1 command, reads CART-RANDOM
|-
| <code>263C8230EC15FAE3CE79365BD850F4BD</code>
| 0x0
| Encrypted mode1 command, enters crypto mode2 with (HOST-RANDOM, CART-RANDOM)
|-
| <code>B6FDA6F37FFA29E18831D0B217DFBDBE</code>
| 0x4
| Encrypted mode2 command, possibly read card id?
|-
| <code>7B97F7DF07240AA9870E1C974336FA8A</code>
| 0x4
| Encrypted mode2 command
|-
|}


= Manufacturers =
= Manufacturers =
;Macronix (MX)
;MegaChips (outsourced to Macronix)
: Uses package: LGA, TSOP-48
: Uses package: LGA, TSOP-48
: Uses card id: 0xC2
: Uses card id: 0xC2
;Renesas
 
;Lapis
: Uses package: LGA, TSOP-48
: Uses package: LGA, TSOP-48
: Uses card id: 0x23
: Uses card id: 0xAE
;SanDisk?
 
: Uses package: ??
;LSI Logic (?)
: Uses card id: 0x45 ?
: Uses package: LGA
: Uses card id: 0x36
Retrieved from "https://switchbrew.org/wiki/Gamecard"