I would try but I only have the U iso. About a year ago when Mapler and I couldn't find anything about .dtm's, we made this notepad file showing what button presses are in hex form. Maybe it can help you:
0000000080808080 - Blank
0100000080808080 - Start
0200000080808080 - A
0400000080808080 - B
0800000080808080 - X
1000000080808080 - Y
2000000080808080 - Z
4000000080808080 - Up DPad
0002000080808080 - Right DPad
8000000080808080 - Down DPad
0001000080808080 - Left DPad
0004FF0080808080 - 100% L
000800FF80808080 - 100% R
0000000080FF8080 - Up Analog
00000000FF808080 - Right Analog
0000000080018080 - Down Analog
0000000001808080 - Left Analog
00000000808080FF - Up C
000000008080FF80 - Right C
0000000080808001 - Down C
0000000080800180 - Left C
By the way, there used to be a page on .dtm documentation that I found shortly after making this list, but it seems to have disappeared from the Dolphin google-code page.