romStart, usrInit, usrKernelInit, usrRoot works. usrRoot calls the orginal firmware usrAppInit_0.
when I run it, there is the same efect: back to menu, with only "jump" working.
when I make a fopen("A:\test.txt","w") and fclose - it made a diffrence:
menu apears - but the "jump" button don't work. file isn't writen either :\
I think the best thing now is to find what the firmware does before jumping to 0x800000. I can't find it.
NEW: the test was with an error: \ in place of /. when I made it right - the jump button works. but there is no file created :\
NEW: tested the eventproc_EdLedBlink after AppInit - nothing happened.