From 153510641ed1ffbc18235c43a372b4346b23f8b0 Mon Sep 17 00:00:00 2001 From: rekado Date: Thu, 31 Oct 2013 22:47:34 +0800 Subject: new post --- posts/2013-10-31-wavedrum-data-comparison.markdown | 66 ++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 posts/2013-10-31-wavedrum-data-comparison.markdown (limited to 'posts/2013-10-31-wavedrum-data-comparison.markdown') diff --git a/posts/2013-10-31-wavedrum-data-comparison.markdown b/posts/2013-10-31-wavedrum-data-comparison.markdown new file mode 100644 index 0000000..0418d59 --- /dev/null +++ b/posts/2013-10-31-wavedrum-data-comparison.markdown @@ -0,0 +1,66 @@ +--- +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. + +More to follow. -- cgit v1.2.3