Changes

The codehandler on the Wii side is inserted in some commonly called function like the function to wait for vertical blank. When it gets a chance to run, it performs the virtual machine functions of interpreting the gecko codes, and services the debug commands pending on the EXI port if any are ready.

The codehandler on the Wii side is inserted in some commonly called function like the function to wait for vertical blank. When it gets a chance to run, it performs the virtual machine functions of interpreting the gecko codes, and services the debug commands pending on the EXI port if any are ready.

The command codes all start with a byte to indicate what the command is, and the command byte is followed by zero or more bytes of associated data. Here is a list of codes. The byte values are in hex (base 16), so if "10" appears it isn't ten, it's sixteen. The codes seem to be using binary coded decimal.

The command codes all start with a byte to indicate what the command is, and the command byte is followed by zero or more bytes of associated data. Here is a list of codes. The byte values are in hex (base 16), so if "10" appears it isn't ten, it's sixteen. The codes seem to be loosely organized in binary coded decimal.

* 01 [4 bytes address] [4 bytes data] = Write a byte to memory

* 02 [4 bytes address] [4 bytes data] = Write a word (16 bits) to memory

01 [4 bytes address] [4 bytes data] = Write a byte to memory

* 03 [4 bytes address] [4 bytes data] = Write a double word (32 bits) to memory

02 [4 bytes address] [4 bytes data] = Write a word (16 bits) to memory

* 06 = Freeze program

03 [4 bytes address] [4 bytes data] = Write a double word (32 bits) to memory

* 07 = Unfreeze program

06 = Freeze program

* 08 = Resume program, but remain frozen (single frame advance)

07 = Unfreeze program

* NOTE THIS IS A WORK IN PROGRESS

08 = Resume program, but remain frozen (single frame advance)

* 09 [data] = Breakpoints (ibp)

NOTE THIS IS A WORK IN PROGRESS

* 10 [data] = Breakpoints (dbp)

09 [data] = Breakpoints (ibp)

* 2f [data] = upbpdata

10 [data] = Breakpoints (dbp)

* 30 [data?] = getbpdata

2f [data] = upbpdata

* 38 [data] = cancelbreakpoints

30 [data?] = getbpdata

* 40 [data] = sendcheats

38 [data] = cancelbreakpoints

* 41 [data] = uploadcode

40 [data] = sendcheats

* 44 [data] = breakpoints (step)

41 [data] = uploadcode

* 50 [data] = pausestatus

44 [data] = breakpoints (step)

* 60 [data] = executecodes

50 [data] = pausestatus

* 89 [data] = breakpoints (aligned dbp)

60 [data] = executecodes

* 99 [data] = versionnumber

89 [data] = breakpoints (aligned dbp)

99 [data] = versionnumber

== Files ==

== Files ==