Emu XL-7 & MP-7 User's Group

Excellent analysis, Bruno.  I will probably have to wait until the weekend before I can look at the specifics to confirm what you found and to see what else is going on.

The file is 3784 bytes. I just did a binary compare of the file with one having a 2001 date stamp; they are identical. At the dos prompt I did a simple: >FC 1.mid 2.mid /B . 

The prospect that the sysex packets are very close to the *.mid file is great news. Its just a matter of figuring out the differences and how to duplicate them--which you have already started doing. I will have to spend some time with it, too.

Interesting that you found only 6 track markers (was it 6?). When I dial up 043^0 StarSeeker my sequencer shows 13 lit track enables (5, 6, and 16 are off). Pattern Edit confirms there is no note data on those tracks.

I have some thoughts of what to check to try to explain the size difference, but I don't want to speculate just yet.

Again, excellent data/format analysis!!!!

Steve



--- In xl7@yahoogroups.com, Bruno <brunorc@...> wrote:
>
> Actually, typing too fast - it's 3784, while the dump here has 32 packets
> of 127 and one packet of 100 bytes, yielding together 4164 bytes, 380 more
> than expected. There are also places, where the dump shows 4D 00 54 72 6B,
> where in the original file there's 4D 54 72 6B (track header). Either
> eLoader mangles the data in certain way, or MidiOx was not completely
> precise while capturing it...
> 
> 
> 2014/1/14 Bruno <brunorc@...>
> 
> > 3785 bytes, found it in Files section. Checking it against the dump...
> >
> >
> > 2014/1/14 Bruno <brunorc@...>
> >
> >> Just to correct some of my assumptions:
> >>
> >> 2014/1/14 Bruno <brunorc@...>
> >>
> >>> In your case, the dump starts with "F0 7E 00 07 02 00 7F", which is the
> >>> E-mu SysEx header, then there's 00, and... 4D 54 68 64! The dump
> >>>
> >>
> >> F0 7E is the Device Inquiry message; 00 stands for Device Id; 07 stands
> >> for File Dump; 02 means "Data Packet"; next byte specify the number of
> >> packet (modulo 7F) and number of bytes (00 7F). Then the data starts.
> >> However, after the MThd there should be 10 bytes and then the MTrk (4D 54
> >> 72 6B). That's not the case, there are two 00 bytes extra.
> >>
> >> Steve, what is the original size of the StarSeeker.mid (in bytes)?
> >>
> >> Bruno
> >>
> >
> >
>