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− | [[File:Gamecard.jpg|thumb|right|A 3DS gamecard]] | + | [[File:Gamecard.jpg|thumb|right|一张N3DS游戏卡]] |
− | [[File:GamecardPhy.jpg|thumb|right|Close-up of PCB]] | + | [[File:GamecardPhy.jpg|thumb|right|印刷电路板特写]] |
| | | |
| + | 译自[[Gamecards]] |
| == 物理接口 == | | == 物理接口 == |
− | 3ds游戏卡带拥有与通常DS或DSi一样的物理接口。它们的区别只有塑料卡壳右上角的一个装饰槽,它能阻止卡带插入到旧的Nintendo DS或DSi系统中。
| + | 3ds游戏卡带拥有与DS和DSi有一样的物理接口。他们的区别只有3DS游戏卡带的塑料壳右上角有一个防呆槽,它能阻止3DS卡带插入到旧的Nintendo DS或DSi主机中。 |
| | | |
− | 当去除装饰槽以使卡带适于插入DS或DSi系统中时,它们拒绝检测卡带,并无法显示标题图标。
| + | 即使去除防呆槽并把卡带插入DS或DSi主机中,系统也会拒绝检测卡带,并且不能显示标题图标。 |
| | | |
| {| class="wikitable" border="1" | | {| class="wikitable" border="1" |
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| | 2 | | | 2 |
| | CLK | | | CLK |
− | | 时钟信号。DS/DSi游戏卡带频率分别为6.7MHz和4.2MHz,3DS游戏卡带上升到16.6MHz(用于SPI和ROM传输)。 | + | | 时钟信号。DS/DSi游戏卡带频率分别为6.7MHz和4.2MHz,3DS游戏卡带高达16.6MHz(用于SPI和ROM传输)。 |
| |- | | |- |
| | 3 | | | 3 |
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| | 13 | | | 13 |
| | DAT4 | | | DAT4 |
− | | 双向数据总线 /存游戏芯片未上的NC/SIO3引脚。 | + | | 双向数据总线 /存游戏芯片上的NC/SIO3引脚。 |
| |- | | |- |
| | 14 | | | 14 |
| | DAT5 | | | DAT5 |
− | | 双向数据总线 /存游戏芯片未上的WP#/SIO2引脚。 | + | | 双向数据总线 /存游戏芯片上的WP#/SIO2引脚。 |
| |- | | |- |
| | 15 | | | 15 |
| | DAT6 | | | DAT6 |
− | | 双向数据总线 /存游戏芯片未上的SO/SIO1引脚。 | + | | 双向数据总线 /存游戏芯片上的SO/SIO1引脚。 |
| |- | | |- |
| | 16 | | | 16 |
| | DAT7 | | | DAT7 |
− | | 双向数据总线 /存游戏芯片未上的SI/SIO0引脚。 | + | | 双向数据总线 /存游戏芯片上的SI/SIO0引脚。 |
| |- | | |- |
| | 17 | | | 17 |
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| | 接地。 | | | 接地。 |
| |} | | |} |
| + | |
| + | |
| + | == SPI闪存 == |
| + | 目前为止,只有存游戏闪存芯片(savegame FLASH chip)被识别了。这块芯片被识别为0xC22211。JEDEC制造ID为Macronix,此外芯片标签为25L1001,与 MX25L1021E相符。 |
| + | 数据表位于:http://www.macronix.com/QuickPlace/hq/PageLibrary4825740B00298A3B.nsf/$defaultview/3F21BAC2E121E17848257639003A3146/$File/MX25L1021E%2C%203V%2C%201Mb%2C%20v1.1.pdf?OpenElement <br> |
| + | http://www.beilenet.com/download/MX25L1021E,%203V,%201Mb,%20v0.01.pdf(old version mirror) <br> 。不论如何,MX25L1021E不支持3DS用于与SPI闪存(SPI flash)交换数据的4位宽传输。因此,这可能是一块定制闪存芯片。 |
| + | |
| + | == 格式 == |
| + | Cartridge及系统更新存放在为此预留的区块内。 |
| + | 在ROM里,能找到小于1GB的CART_SIZE_MAX-( 0x280000*(CART_SIZE_MAX/CART_SIZE_128MB) )-0x2000000的更新区块。该区块为0x2000000字节。 |
| + | |
| + | == 通信协议 == |
| + | 与DS和DSi游戏卡带相比,3DS系统与3DS游戏卡带的通信协议几乎完全改变了。 |
| + | |
| + | 在第6个传输以后,命令从8 byte变为16 byte。可能使用了新的加密手段,比如AES CTR。 |
| + | 发送16 byte命令之后,卡带准备好并发送一个单字节数据0x01之前,数据总线一直为0x00直到。接下来是实际数据。每0x200-byte 实际数据块之后,是4-byte该字节块的标准CRC32码(未加密)。 |
| + | |
| + | 下面是一个3DS主机给3DS游戏卡带的发送的命令样本: |
| + | |
| + | {| class="wikitable" border="1" |
| + | |- |
| + | ! 大小 |
| + | ! 命令 |
| + | ! 解码命令 |
| + | ! 描述 |
| + | |- |
| + | |<tt>2000</tt> |
| + | |<tt>9F00000000000000</tt> |
| + | | |
| + | |Reset |
| + | |- |
| + | |<tt>0000</tt> |
| + | |<tt>71C93FE9BB0A3B18</tt> |
| + | | |
| + | |Unknown |
| + | |- |
| + | |<tt>0004</tt> |
| + | |<tt>9000000000000000</tt> |
| + | | |
| + | |Get gamecard ID, response=9000FEC2 |
| + | |- |
| + | |<tt>0004</tt> |
| + | |<tt>9000000000000000</tt> |
| + | | |
| + | | Get gamecard ID, response=9000FEC2 |
| + | |- |
| + | |<tt>0004</tt> |
| + | |<tt>A000000000000000</tt> |
| + | | |
| + | | Unknown, response=00000000 |
| + | |- |
| + | |<tt>0000</tt> |
| + | |<tt>3E00000000000000</tt> |
| + | | |
| + | | Enter 16-byte command mode. |
| + | |- |
| + | |<tt>0200</tt> |
| + | |<tt>82000000000000000000000000000000</tt> |
| + | | |
| + | | Get header |
| + | |- |
| + | |<tt>0000</tt> |
| + | |<tt>F32C92D85C9D44DED3E0E41DBE7C90D9</tt> |
| + | |<tt>8300000000000000708DF1A731717D0B</tt> |
| + | | Seed |
| + | |- |
| + | |<tt>0004</tt> |
| + | |<tt>696B9D8582FB55D31B68CAFE70C74A95</tt> |
| + | |<tt>A200000000000000708DF1A731717D0B</tt> |
| + | | Get secured gamecard ID, response=9000FEC2 |
| + | |- |
| + | |<tt>0004</tt> |
| + | |<tt>BAA4812CA0AC9C5D19399530E3ACCCAB</tt> |
| + | |<tt>A300000000000000708DF1A731717D0B</tt> |
| + | | Unknown |
| + | |- |
| + | |<tt>0000</tt> |
| + | |<tt>178E427C22D87ADB86387249A97D321A</tt> |
| + | |<tt>C500000000000000708DF1A731717D0B</tt> |
| + | | Unknown |
| + | |- |
| + | |<tt>0004</tt> |
| + | |<tt>E06019B1BD5C9130ED6A4D9F4A9E7193</tt> |
| + | |<tt>A200000000000000708DF1A731717D0B</tt> |
| + | | Get secured gamecard ID, response=9000FEC2 |
| + | |- |
| + | |<tt>0004</tt> |
| + | |<tt>4E0D224862523BBFE2E6255F80E15F37</tt> |
| + | |<tt>A200000000000000708DF1A731717D0B</tt> |
| + | | Get secured gamecard ID, response=9000FEC2 |
| + | |- |
| + | |<tt>0004</tt> |
| + | |<tt>4CDF93D319FB62D0DB632A45E3E8D84C</tt> |
| + | |<tt>A200000000000000708DF1A731717D0B</tt> |
| + | | Get secured gamecard ID, response=9000FEC2 |
| + | |- |
| + | |<tt>0004</tt> |
| + | |<tt>9AA5D80551002F955546D296A57F0FEF</tt> |
| + | |<tt>A200000000000000708DF1A731717D0B</tt> |
| + | | Get secured gamecard ID, response=9000FEC2 |
| + | |- |
| + | |<tt>0004</tt> |
| + | |<tt>C12BA81AEF30DDDBD93FAD5D544C6334</tt> |
| + | |<tt>A200000000000000708DF1A731717D0B</tt> |
| + | | Get secured gamecard ID, response=9000FEC2 |
| + | |- |
| + | |<tt>0200</tt> |
| + | |<tt>62EC5FB7F420AE1DC6253AE18AFA5BB3</tt> |
| + | |<tt>BF000000000000000000000000000000</tt> |
| + | | Read address 0 |
| + | |- |
| + | |<tt>0200</tt> |
| + | |<tt>E3FA23AA016BE0C93430D1F42FF41324</tt> |
| + | |<tt>BF000000000040000000000000000000</tt> |
| + | | Read address 0x4000 |
| + | |} |
| + | |
| + | 头部命令有一些无用的初始字节,最后返回一个0x200字节的头部。下面是乐高星球大战3( Lego Starwars 3)的样本: |
| + | |
| + | (The header command has some initial dummy bytes, and eventually responds with a 0x200 byte header. Here's an example for Lego Starwars 3:) |
| + | 0000000: 00 8c 03 00 00 00 04 00 00 00 00 00 00 00 00 00 ................ |
| + | 0000010: b3 cf fb c6 6a b1 cb 20 32 af ce 35 d4 1c 74 c9 ....j.. 2..5..t. |
| + | 0000020: 8e 6b 27 2f 08 01 28 3b d4 30 de 44 37 f5 b0 46 .k'/..(;.0.D7..F |
| + | 0000030: 91 59 d7 38 33 48 df 83 fd 71 84 2c 00 00 00 00 .Y.83H...q.,.... |
| + | 0000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 0000050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 0000060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 0000070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 0000080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 0000090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 00000a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 00000b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 00000c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 00000d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 00000e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 00000f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 0000100: 4e 43 43 48 7a 7f 0e 00 00 8c 03 00 00 00 04 00 NCCHz........... |
| + | 0000110: 36 34 02 00 00 00 00 00 00 8c 03 00 00 00 04 00 64.............. |
| + | 0000120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 0000130: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 0000140: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 0000150: 43 54 52 2d 50 2d 41 4c 47 50 00 00 00 00 00 00 CTR-P-ALGP...... |
| + | 0000160: 0c 27 e3 c1 de 7b 2a e2 d3 11 4f 32 a4 ee bf 46 .'...{*...O2...F |
| + | 0000170: 9a fd 0c f3 52 c1 1d 49 84 c2 a9 f1 d2 14 4c 63 ....R..I......Lc |
| + | 0000180: 00 04 00 00 00 00 00 00 00 00 00 00 01 03 00 00 ................ |
| + | 0000190: 05 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................ |
| + | 00001a0: 06 00 00 00 1c 0a 00 00 01 00 00 00 00 00 00 00 ................ |
| + | 00001b0: 22 0a 00 00 58 75 0e 00 01 00 00 00 00 00 00 00 "...Xu.......... |
| + | 00001c0: 13 0c 04 26 15 f6 47 c4 c6 32 25 ea 9e 67 f8 a2 ...&..G..2%..g.. |
| + | 00001d0: 7b 15 24 6b 88 fb c7 a9 27 25 7b 84 97 7b 78 7b {.$k....'%{..{x{ |
| + | 00001e0: a6 5b ee 10 60 bb 6a 68 21 bb ce c6 00 03 5b 7e .[..`.jh!.....[~ |
| + | 00001f0: 64 fb 6e ac a7 f0 96 0c fb 1f 5a 37 08 77 28 f7 d.n.......Z7.w(. |