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----
-title: Firmware comparison between Wavedrums Original, Black and Oriental
-tags: DIY,electronics,music,hacking,wavedrum
----
-
-Since
-[my first post on hacking the Wavedrum](/posts/2013-08-11-hacking-the-wavedrum.html)
-two fellow musicians have sent me copies of the contents of their
-Wavedrum instruments, so I now have the data for the original silver
-issue, the black re-issue and the Oriental.
-
-The differences between the data from the silver and the data from the
-black Wavedrum are very few.  Of the files sent to me only five
-differ: `USER.BIN`, `CALIB.BIN`, `WD2_PROG.BIN`, `SYSTEM/VERSION.INF`,
-and `SYSTEM/WDX_M100.BIN`.  `USER.BIN` contains only the mapping of
-programmes to slots and banks, which have been altered by the
-respective owners of the two instruments, so it can safely be ignored.
-Likewise, `WD2_PROG.BIN` contains custom user programmes and hence is
-of no interest.
-
-`CALIB.BIN` contains as of yet unknown calibration information, just
-like the similarly named `CALIB.BOR` on my Wavedrum Oriental.  The
-contents of `CALIB.BIN` from the original Wavedrum are identical to
-those of the matching file on the Oriental.  The only difference
-that the Black has over the other two is a single digit.  This is from
-the Oriental:
-
-    01 00 00 75 00 00 00 00  02 00 00 00 00 00 00 00
-
-And this is from the Black:
-
-    01 00 00 75 00 00 00 00  01 00 00 00 00 00 00 00
-
-Not very exciting.
-
-`SYSTEM/VERSION.INF` contains the hardware/software versions.  Here
-are the contents of the Original, followed by the Black and the
-Oriental:
-
-    01 20 01 10 01 20 00 00  00 00 00 00 00 00 00 00
-    01 32 01 10 01 32 00 00  57 44 58 5F 00 00 00 00
-    02 02 01 10 02 02 00 00  57 44 4f 52 00 00 00 00
-
-Again, these are in decimal notation and are in this format: firmware
-version (two bytes), sub-version (two bytes), data version
-(two-bytes), two empty bytes, four bytes for an optional identifier
-followed by four empty bytes.
-
-|Type     | Firmware version | Sub-version  |  Data version  | Identifier   |
-|--------:|------------------|--------------|----------------|--------------|
-|Original | 1.20             | 1.10         | 1.20           | none         |
-|Black    | 1.32             | 1.10         | 1.32           | WDX_         |
-|Oriental | 2.02             | 1.10         | 2.02           | WDOR         |
-
-Looking at the version numbers above it becomes apparent that the
-sounds themselves are not covered by these numbers as the sounds on
-the Black are no different from those on the Original, yet the data
-version differs.
-
-The file `SYSTEM/WDX_M100.BIN` must be the firmware on both the
-Original and the Black Wavedrum, serving the same purpose as
-`SYSTEM/WDORM202.BIN` on the Oriental.  There are quite a few changes
-even between version 1.20 and 1.32, but I haven't yet taken the time
-to analyse them.  It is interesting to note, though, that every
-firmware file is /exactly/ one megabyte long, independent of the
-Wavedrum type.  This is due to padding which in the Original firmware
-begins at offset 0xC967C, in the Black firmware at offset 0xC9C68, and
-in the Oriental firmware at offset 0xDCB64
-
-More to follow.
-
-Read [more posts about the Wavedrum here](http://elephly.net/tags/wavedrum.html).