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====== M3i Zero (GMP-Z003) programming ======

Sourced from [[https://github.com/handsomematt/gmp-z003]]

===== Commands =====

==== Card: Info (B0 00 00 00 00 00 00 00) =====

Should be 0x5AA5.

==== Card: Write (C5 aa bb cc dd tt 00 00) =====

Receives 512 bytes.

  * ''aabbccdd'' - offset in number of words (?)
  * ''tt'' - type:
    * ''0x00'' - SD card access (?)
    * ''0xE0'' - "SW" header, used with offset = 0, after that offset += 0x10000 (in number of words)
    * ''0xF0'' - "SW" regular sector (0x200 bytes)
    * ''0xA0'' - "HW" sector. One sector (header ?) is at 0x80000000 then the others start at offset 0.

==== Card: Query write status? (C6 00 00 00 00 00 00 00) =====

Returns four bytes (= 0 when finished).

==== Card: Read (C9 aa bb cc dd tt 00 00) =====

Returns 512 bytes.

  * ''aabbccdd'' - offset in number of words (?)
  * ''tt'' - type (see above)

==== Card: Query read status (CA 00 00 00 00 00 00 00) =====

Returns four bytes (= 0 when finished).